Bump github.com/prometheus/common from 0.62.0 to 0.63.0 (#1143)

Bumps [github.com/prometheus/common](https://github.com/prometheus/common) from 0.62.0 to 0.63.0.
- [Release notes](https://github.com/prometheus/common/releases)
- [Changelog](https://github.com/prometheus/common/blob/main/RELEASE.md)
- [Commits](https://github.com/prometheus/common/compare/v0.62.0...v0.63.0)

---
updated-dependencies:
- dependency-name: github.com/prometheus/common
  dependency-version: 0.63.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.circleci/config.yml

@@ -8,7 +8,7 @@ executors:
   # This must match .promu.yml.
   golang:
     docker:
-    - image: cimg/go:1.20
+    - image: cimg/go:1.24
 
 jobs:
   test:
@@ -16,13 +16,14 @@ jobs:
 
     steps:
     - prometheus/setup_environment
+    - run: GOHOSTARCH=386 GOARCH=386 make test
     - run: make
     - prometheus/store_artifact:
         file: postgres_exporter
 
   integration:
     docker:
-    - image: cimg/go:1.20
+    - image: cimg/go:1.24
     - image: << parameters.postgres_image >>
       environment:
         POSTGRES_DB: circle_test
@@ -56,12 +57,13 @@ workflows:
         matrix:
           parameters:
             postgres_image:
-            - circleci/postgres:10
             - circleci/postgres:11
             - circleci/postgres:12
             - circleci/postgres:13
-            - cimg/postgres:14.1
-            - cimg/postgres:15.1
+            - cimg/postgres:14.9
+            - cimg/postgres:15.4
+            - cimg/postgres:16.0
+            - cimg/postgres:17.0
     - prometheus/build:
         name: build
         parallelism: 3

.github/workflows/container_description.yml

@@ -0,0 +1,57 @@
+---
+name: Push README to Docker Hub
+on:
+  push:
+    paths:
+      - "README.md"
+      - "README-containers.md"
+      - ".github/workflows/container_description.yml"
+    branches: [ main, master ]
+
+permissions:
+  contents: read
+
+jobs:
+  PushDockerHubReadme:
+    runs-on: ubuntu-latest
+    name: Push README to Docker Hub
+    if: github.repository_owner == 'prometheus' || github.repository_owner == 'prometheus-community' # Don't run this workflow on forks.
+    steps:
+      - name: git checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Set docker hub repo name
+        run: echo "DOCKER_REPO_NAME=$(make docker-repo-name)" >> $GITHUB_ENV
+      - name: Push README to Dockerhub
+        uses: christian-korneck/update-container-description-action@d36005551adeaba9698d8d67a296bd16fa91f8e8 # v1
+        env:
+          DOCKER_USER: ${{ secrets.DOCKER_HUB_LOGIN }}
+          DOCKER_PASS: ${{ secrets.DOCKER_HUB_PASSWORD }}
+        with:
+          destination_container_repo: ${{ env.DOCKER_REPO_NAME }}
+          provider: dockerhub
+          short_description: ${{ env.DOCKER_REPO_NAME }}
+          # Empty string results in README-containers.md being pushed if it
+          # exists. Otherwise, README.md is pushed.
+          readme_file: ''
+
+  PushQuayIoReadme:
+    runs-on: ubuntu-latest
+    name: Push README to quay.io
+    if: github.repository_owner == 'prometheus' || github.repository_owner == 'prometheus-community' # Don't run this workflow on forks.
+    steps:
+      - name: git checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Set quay.io org name
+        run: echo "DOCKER_REPO=$(echo quay.io/${GITHUB_REPOSITORY_OWNER} | tr -d '-')" >> $GITHUB_ENV
+      - name: Set quay.io repo name
+        run: echo "DOCKER_REPO_NAME=$(make docker-repo-name)" >> $GITHUB_ENV
+      - name: Push README to quay.io
+        uses: christian-korneck/update-container-description-action@d36005551adeaba9698d8d67a296bd16fa91f8e8 # v1
+        env:
+          DOCKER_APIKEY: ${{ secrets.QUAY_IO_API_TOKEN }}
+        with:
+          destination_container_repo: ${{ env.DOCKER_REPO_NAME }}
+          provider: quay
+          # Empty string results in README-containers.md being pushed if it
+          # exists. Otherwise, README.md is pushed.
+          readme_file: ''

.github/workflows/golangci-lint.yml

@@ -1,3 +1,5 @@
+---
+# This action is synced from https://github.com/prometheus/prometheus
 name: golangci-lint
 on:
   push:
@@ -10,21 +12,28 @@ on:
       - ".golangci.yml"
   pull_request:
 
+permissions:  # added using https://github.com/step-security/secure-repo
+  contents: read
+
 jobs:
   golangci:
+    permissions:
+      contents: read  # for actions/checkout to fetch code
+      pull-requests: read  # for golangci/golangci-lint-action to fetch pull requests
     name: lint
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
-      - name: install Go
-        uses: actions/setup-go@v3
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Install Go
+        uses: actions/setup-go@0aaccfd150d50ccaeb58ebd88d36e91967a5f35b # v5.4.0
         with:
-          go-version: 1.20.x
+          go-version: 1.24.x
       - name: Install snmp_exporter/generator dependencies
         run: sudo apt-get update && sudo apt-get -y install libsnmp-dev
         if: github.repository == 'prometheus/snmp_exporter'
       - name: Lint
-        uses: golangci/golangci-lint-action@v3.4.0
+        uses: golangci/golangci-lint-action@1481404843c368bc19ca9406f87d6e0fc97bdcfd # v7.0.0
         with:
-          version: v1.51.2
+          args: --verbose
+          version: v2.0.2

.golangci.yml

@@ -1,16 +1,36 @@
----
+version: "2"
 linters:
   enable:
-  - revive
-
-issues:
-  exclude-rules:
-  - path: _test.go
-    linters:
-    - errcheck
-
-linters-settings:
-  errcheck:
-    exclude-functions:
-      # Never check for logger errors.
-      - (github.com/go-kit/log.Logger).Log
+    - misspell
+    - revive
+  settings:
+    errcheck:
+      exclude-functions:
+        - (github.com/go-kit/log.Logger).Log
+    revive:
+      rules:
+        - name: unused-parameter
+          severity: warning
+          disabled: true
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    rules:
+      - linters:
+          - errcheck
+        path: _test.go
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$

.promu.yml

@@ -1,13 +1,12 @@
 go:
     # This must match .circle/config.yml.
-    version: 1.20
+    version: 1.24
 repository:
     path: github.com/prometheus-community/postgres_exporter
 build:
     binaries:
         - name: postgres_exporter
           path: ./cmd/postgres_exporter
-    flags: -a -tags 'netgo static_build'
     ldflags: |
         -X github.com/prometheus/common/version.Version={{.Version}}
         -X github.com/prometheus/common/version.Revision={{.Revision}}

.yamllint

@@ -1,5 +1,7 @@
 ---
 extends: default
+ignore: |
+  **/node_modules
 
 rules:
   braces:
@@ -20,5 +22,4 @@ rules:
       config/testdata/section_key_dup.bad.yml
   line-length: disable
   truthy:
-    ignore: |
-      .github/workflows/*.yml
+    check-keys: false

CHANGELOG.md

@@ -1,3 +1,75 @@
+## 0.17.1 / 2025-02-26
+
+* [BUGFIX] Fix: Handle incoming labels with invalid UTF-8 #1131
+
+## 0.17.0 / 2025-02-16
+
+## What's Changed
+* [ENHANCEMENT] Add Postgres 17 for CI test by @khiemdoan in https://github.com/prometheus-community/postgres_exporter/pull/1105
+* [ENHANCEMENT] Add wait/backend to pg_stat_activity by @fgalind1 in https://github.com/prometheus-community/postgres_exporter/pull/1106
+* [ENHANCEMENT] Export last replay age in replication collector by @bitfehler in https://github.com/prometheus-community/postgres_exporter/pull/1085
+* [BUGFIX] Fix pg_long_running_transactions time by @jyothikirant-sayukth in https://github.com/prometheus-community/postgres_exporter/pull/1092
+* [BUGFIX] Fix to replace dashes with underscore in the metric names by @aagarwalla-fx in https://github.com/prometheus-community/postgres_exporter/pull/1103
+* [BIGFIX] Checkpoint related columns in PG 17 have been moved from pg_stat_bgwriter to pg_stat_checkpointer by @n-rodriguez in https://github.com/prometheus-community/postgres_exporter/pull/1072
+* [BUGFIX] Fix pg_stat_statements for PG17 by @NevermindZ4 in https://github.com/prometheus-community/postgres_exporter/pull/1114
+* [BUGFIX] Handle pg_replication_slots on pg<13 by @michael-todorovic in https://github.com/prometheus-community/postgres_exporter/pull/1098
+* [BUGFIX] Fix missing dsn sanitization for logging by @sysadmind in https://github.com/prometheus-community/postgres_exporter/pull/1104
+
+## New Contributors
+* @jyothikirant-sayukth made their first contribution in https://github.com/prometheus-community/postgres_exporter/pull/1092
+* @aagarwalla-fx made their first contribution in https://github.com/prometheus-community/postgres_exporter/pull/1103
+* @NevermindZ4 made their first contribution in https://github.com/prometheus-community/postgres_exporter/pull/1114
+* @michael-todorovic made their first contribution in https://github.com/prometheus-community/postgres_exporter/pull/1098
+* @fgalind1 made their first contribution in https://github.com/prometheus-community/postgres_exporter/pull/1106
+
+**Full Changelog**: https://github.com/prometheus-community/postgres_exporter/compare/v0.16.0...v0.17.0
+
+## 0.16.0 / 2024-11-10
+
+BREAKING CHANGES:
+
+The logging system has been replaced with log/slog from the stdlib. This change is being made across the prometheus ecosystem. The logging output has changed, but the messages and levels remain the same. The `ts` label for the timestamp has bewen replaced with `time`, the accuracy is less, and the timezone is not forced to UTC. The `caller` field has been replaced by the `source` field, which now includes the full path to the source file. The `level` field now exposes the log level in capital letters.
+
+* [CHANGE] Replace logging system #1073
+* [ENHANCEMENT] Add save_wal_size and wal_status to replication_slot collector #1027
+* [ENHANCEMENT] Add roles collector and connection limit metrics to database collector #997
+* [ENHANCEMENT] Excluded databases log messgae is now info level #1003
+* [ENHANCEMENT] Add active_time to stat_database collector #961
+* [ENHANCEMENT] Add slot_type label to replication_slot collector #960
+* [BUGFIX] Fix walreceiver collectore when no repmgr #1086
+* [BUGFIX] Remove logging errors on replicas #1048
+* [BUGFIX] Fix active_time query on postgres>=14 #1045
+
+## 0.15.0 / 2023-10-27
+
+* [ENHANCEMENT] Add 1kB and 2kB units #915
+* [BUGFIX] Add error log when probe collector creation fails #918
+* [BUGFIX] Fix test build failures on 32-bit arch #919
+* [BUGFIX] Adjust collector to use separate connection per scrape #936
+
+## 0.14.0 / 2023-09-11
+
+* [CHANGE] Add `state` label to pg_process_idle_seconds #862
+* [CHANGE] Change database connections to one per scrape #882 #902
+* [ENHANCEMENT] Add wal collector #858
+* [ENHANCEMENT] Add database_wraparound collector #834
+* [ENHANCEMENT] Add stat_activity_autovacuum collector #840
+* [ENHANCEMENT] Add stat_wal_receiver collector #844
+* [ENHANCEMENT] Add xlog_location collector #849
+* [ENHANCEMENT] Add statio_user_indexes collector #845
+* [ENHANCEMENT] Add long_running_transactions collector #836
+* [ENHANCEMENT] Add pg_stat_user_tables_size_bytes metric #904
+* [BUGFIX] Fix tests on 32-bit systems #857
+* [BUGFIX] Fix pg_stat_statements metrics on Postgres 13+ #874 #876
+* [BUGFIX] Fix pg_stat_database metrics for NULL stats_reset #877
+* [BUGFIX] Fix pg_replication_lag_seconds on Postgres 10+ when master is idle #895
+
+## 0.13.2 / 2023-07-21
+
+* [BUGFIX] Fix type issues on pg_postmaster metrics #828
+* [BUGFIX] Fix pg_replication collector instantiation #854
+* [BUGFIX] Fix pg_process_idle metrics #855
+
 ## 0.13.1 / 2023-06-27
 
 * [BUGFIX] Make collectors not fail on null values #823

Makefile.common

@@ -49,23 +49,23 @@ endif
 GOTEST := $(GO) test
 GOTEST_DIR :=
 ifneq ($(CIRCLE_JOB),)
-ifneq ($(shell command -v gotestsum > /dev/null),)
+ifneq ($(shell command -v gotestsum 2> /dev/null),)
 	GOTEST_DIR := test-results
 	GOTEST := gotestsum --junitfile $(GOTEST_DIR)/unit-tests.xml --
 endif
 endif
 
-PROMU_VERSION ?= 0.14.0
+PROMU_VERSION ?= 0.17.0
 PROMU_URL     := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz
 
 SKIP_GOLANGCI_LINT :=
 GOLANGCI_LINT :=
 GOLANGCI_LINT_OPTS ?=
-GOLANGCI_LINT_VERSION ?= v1.51.2
-# golangci-lint only supports linux, darwin and windows platforms on i386/amd64.
+GOLANGCI_LINT_VERSION ?= v2.0.2
+# golangci-lint only supports linux, darwin and windows platforms on i386/amd64/arm64.
 # windows isn't included here because of the path separator being different.
 ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin))
-	ifeq ($(GOHOSTARCH),$(filter $(GOHOSTARCH),amd64 i386))
+	ifeq ($(GOHOSTARCH),$(filter $(GOHOSTARCH),amd64 i386 arm64))
 		# If we're in CI and there is an Actions file, that means the linter
 		# is being run in Actions, so we don't need to run it here.
 		ifneq (,$(SKIP_GOLANGCI_LINT))
@@ -169,16 +169,20 @@ common-vet:
 common-lint: $(GOLANGCI_LINT)
 ifdef GOLANGCI_LINT
 	@echo ">> running golangci-lint"
-# 'go list' needs to be executed before staticcheck to prepopulate the modules cache.
-# Otherwise staticcheck might fail randomly for some reason not yet explained.
-	$(GO) list -e -compiled -test=true -export=false -deps=true -find=false -tags= -- ./... > /dev/null
 	$(GOLANGCI_LINT) run $(GOLANGCI_LINT_OPTS) $(pkgs)
 endif
 
+.PHONY: common-lint-fix
+common-lint-fix: $(GOLANGCI_LINT)
+ifdef GOLANGCI_LINT
+	@echo ">> running golangci-lint fix"
+	$(GOLANGCI_LINT) run --fix $(GOLANGCI_LINT_OPTS) $(pkgs)
+endif
+
 .PHONY: common-yamllint
 common-yamllint:
 	@echo ">> running yamllint on all YAML files in the repository"
-ifeq (, $(shell command -v yamllint > /dev/null))
+ifeq (, $(shell command -v yamllint 2> /dev/null))
 	@echo "yamllint not installed so skipping"
 else
 	yamllint .
@@ -204,6 +208,10 @@ common-tarball: promu
 	@echo ">> building release tarball"
 	$(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR)
 
+.PHONY: common-docker-repo-name
+common-docker-repo-name:
+	@echo "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)"
+
 .PHONY: common-docker $(BUILD_DOCKER_ARCHS)
 common-docker: $(BUILD_DOCKER_ARCHS)
 $(BUILD_DOCKER_ARCHS): common-docker-%:
@@ -267,3 +275,9 @@ $(1)_precheck:
 		exit 1; \
 	fi
 endef
+
+govulncheck: install-govulncheck
+	govulncheck ./...
+
+install-govulncheck:
+	command -v govulncheck > /dev/null || go install golang.org/x/vuln/cmd/govulncheck@latest

README.md

@@ -7,7 +7,7 @@
 
 Prometheus exporter for PostgreSQL server metrics.
 
-CI Tested PostgreSQL versions: `10`, `11`, `12`, `13`, `14`, `15`
+CI Tested PostgreSQL versions: `11`, `12`, `13`, `14`, `15`, `16`, `17`.
 
 ## Quick Start
 This package is available for Docker:
@@ -17,10 +17,29 @@ docker run --net=host -it --rm -e POSTGRES_PASSWORD=password postgres
 # Connect to it
 docker run \
   --net=host \
-  -e DATA_SOURCE_NAME="postgresql://postgres:password@localhost:5432/postgres?sslmode=disable" \
+  -e DATA_SOURCE_URI="localhost:5432/postgres?sslmode=disable" \
+  -e DATA_SOURCE_USER=postgres \
+  -e DATA_SOURCE_PASS=password \
   quay.io/prometheuscommunity/postgres-exporter
 ```
 
+Test with:
+```bash
+curl "http://localhost:9187/metrics"
+```
+
+Example Prometheus config:
+```yaml
+scrape_configs:
+  - job_name: postgres
+    static_configs:
+      - targets: ["127.0.0.1:9187"] # Replace IP with the hostname of the docker container if you're running the container in a separate network
+```
+
+Now use the DATA_SOURCE_PASS_FILE with a mounted file containing the password to prevent having the password in an environment variable.
+
+The container process runs with uid/gid 65534 (important for file permissions).
+
 ## Multi-Target Support (BETA)
 **This Feature is in beta and may require changes in future releases. Feedback is welcome.**
 
@@ -30,6 +49,26 @@ To use the multi-target functionality, send an http request to the endpoint `/pr
 
 To avoid putting sensitive information like username and password in the URL, preconfigured auth modules are supported via the [auth_modules](#auth_modules) section of the config file. auth_modules for DSNs can be used with the `/probe` endpoint by specifying the `?auth_module=foo` http parameter.
 
+Example Prometheus config:
+```yaml
+scrape_configs:
+  - job_name: 'postgres'
+    static_configs:
+      - targets:
+        - server1:5432
+        - server2:5432
+    metrics_path: /probe
+    params:
+      auth_module: [foo]
+    relabel_configs:
+      - source_labels: [__address__]
+        target_label: __param_target
+      - source_labels: [__param_target]
+        target_label: instance
+      - target_label: __address__
+        replacement: 127.0.0.1:9116  # The postgres exporter's real hostname:port.
+```
+
 ## Configuration File
 
 The configuration file controls the behavior of the exporter. It can be set using the `--config.file` command line flag and defaults to `postgres_exporter.yml`.
@@ -61,7 +100,7 @@ auth_modules:
 To build the Docker image:
 
     make promu
-    promu crossbuild -p linux/amd64 -p linux/armv7 -p linux/amd64 -p linux/ppc64le
+    promu crossbuild -p linux/amd64 -p linux/armv7 -p linux/arm64 -p linux/ppc64le
     make docker
 
 This will build the docker image as `prometheuscommunity/postgres_exporter:${branch}`.
@@ -73,13 +112,22 @@ This will build the docker image as `prometheuscommunity/postgres_exporter:${bra
 
 
 * `[no-]collector.database`
-  Enable the database collector (default: enabled).
+  Enable the `database` collector (default: enabled).
+
+* `[no-]collector.database_wraparound`
+  Enable the `database_wraparound` collector (default: disabled).
+
+* `[no-]collector.locks`
+  Enable the `locks` collector (default: enabled).
+
+* `[no-]collector.long_running_transactions`
+  Enable the `long_running_transactions` collector (default: disabled).
 
 * `[no-]collector.postmaster`
-   Enable the `postmaster` collector (default: enabled).
+   Enable the `postmaster` collector (default: disabled).
 
 * `[no-]collector.process_idle`
-  Enable the `process_idle` collector (default: enabled).
+  Enable the `process_idle` collector (default: disabled).
 
 * `[no-]collector.replication`
   Enable the `replication` collector (default: enabled).
@@ -87,14 +135,17 @@ This will build the docker image as `prometheuscommunity/postgres_exporter:${bra
 * `[no-]collector.replication_slot`
   Enable the `replication_slot` collector (default: enabled).
 
+* `[no-]collector.stat_activity_autovacuum`
+  Enable the `stat_activity_autovacuum` collector (default: disabled).
+
 * `[no-]collector.stat_bgwriter`
   Enable the `stat_bgwriter` collector (default: enabled).
 
 * `[no-]collector.stat_database`
   Enable the `stat_database` collector (default: enabled).
 
-* `[no-]collector.statio_user_tables`
-  Enable the `statio_user_tables` collector (default: enabled).
+* `[no-]collector.stat_progress_vacuum`
+  Enable the `stat_progress_vacuum` collector (default: enabled).
 
 * `[no-]collector.stat_statements`
   Enable the `stat_statements` collector (default: disabled).
@@ -102,6 +153,21 @@ This will build the docker image as `prometheuscommunity/postgres_exporter:${bra
 * `[no-]collector.stat_user_tables`
   Enable the `stat_user_tables` collector (default: enabled).
 
+* `[no-]collector.stat_wal_receiver`
+  Enable the `stat_wal_receiver` collector (default: disabled).
+
+* `[no-]collector.statio_user_indexes`
+  Enable the `statio_user_indexes` collector (default: disabled).
+
+* `[no-]collector.statio_user_tables`
+  Enable the `statio_user_tables` collector (default: enabled).
+
+* `[no-]collector.wal`
+  Enable the `wal` collector (default: enabled).
+
+* `[no-]collector.xlog_location`
+  Enable the `xlog_location` collector (default: disabled).
+
 * `config.file`
   Set the config file path. Default is `postgres_exporter.yml`
 
@@ -164,7 +230,7 @@ The following environment variables configure the exporter:
 * `DATA_SOURCE_URI`
    an alternative to `DATA_SOURCE_NAME` which exclusively accepts the hostname
    without a username and password component. For example, `my_pg_hostname` or
-   `my_pg_hostname?sslmode=disable`.
+   `my_pg_hostname:5432/postgres?sslmode=disable`.
 
 * `DATA_SOURCE_URI_FILE`
    The same as above but reads the URI from a file.

VERSION

@@ -1 +1 @@
-0.13.1
+0.17.1

cmd/postgres_exporter/datasource.go

@@ -20,7 +20,6 @@ import (
 	"regexp"
 	"strings"
 
-	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -39,19 +38,19 @@ func (e *Exporter) discoverDatabaseDSNs() []string {
 			var err error
 			dsnURI, err = url.Parse(dsn)
 			if err != nil {
-				level.Error(logger).Log("msg", "Unable to parse DSN as URI", "dsn", loggableDSN(dsn), "err", err)
+				logger.Error("Unable to parse DSN as URI", "dsn", loggableDSN(dsn), "err", err)
 				continue
 			}
 		} else if connstringRe.MatchString(dsn) {
 			dsnConnstring = dsn
 		} else {
-			level.Error(logger).Log("msg", "Unable to parse DSN as either URI or connstring", "dsn", loggableDSN(dsn))
+			logger.Error("Unable to parse DSN as either URI or connstring", "dsn", loggableDSN(dsn))
 			continue
 		}
 
 		server, err := e.servers.GetServer(dsn)
 		if err != nil {
-			level.Error(logger).Log("msg", "Error opening connection to database", "dsn", loggableDSN(dsn), "err", err)
+			logger.Error("Error opening connection to database", "dsn", loggableDSN(dsn), "err", err)
 			continue
 		}
 		dsns[dsn] = struct{}{}
@@ -61,7 +60,7 @@ func (e *Exporter) discoverDatabaseDSNs() []string {
 
 		databaseNames, err := queryDatabases(server)
 		if err != nil {
-			level.Error(logger).Log("msg", "Error querying databases", "dsn", loggableDSN(dsn), "err", err)
+			logger.Error("Error querying databases", "dsn", loggableDSN(dsn), "err", err)
 			continue
 		}
 		for _, databaseName := range databaseNames {
@@ -109,7 +108,7 @@ func (e *Exporter) scrapeDSN(ch chan<- prometheus.Metric, dsn string) error {
 
 	// Check if map versions need to be updated
 	if err := e.checkMapVersions(ch, server); err != nil {
-		level.Warn(logger).Log("msg", "Proceeding with outdated query maps, as the Postgres version could not be determined", "err", err)
+		logger.Warn("Proceeding with outdated query maps, as the Postgres version could not be determined", "err", err)
 	}
 
 	return server.Scrape(ch, e.disableSettingsMetrics)

cmd/postgres_exporter/main.go

@@ -20,14 +20,13 @@ import (
 	"strings"
 
 	"github.com/alecthomas/kingpin/v2"
-	"github.com/go-kit/log"
-	"github.com/go-kit/log/level"
 	"github.com/prometheus-community/postgres_exporter/collector"
 	"github.com/prometheus-community/postgres_exporter/config"
 	"github.com/prometheus/client_golang/prometheus"
+	versioncollector "github.com/prometheus/client_golang/prometheus/collectors/version"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
-	"github.com/prometheus/common/promlog"
-	"github.com/prometheus/common/promlog/flag"
+	"github.com/prometheus/common/promslog"
+	"github.com/prometheus/common/promslog/flag"
 	"github.com/prometheus/common/version"
 	"github.com/prometheus/exporter-toolkit/web"
 	"github.com/prometheus/exporter-toolkit/web/kingpinflag"
@@ -50,7 +49,7 @@ var (
 	excludeDatabases       = kingpin.Flag("exclude-databases", "A list of databases to remove when autoDiscoverDatabases is enabled (DEPRECATED)").Default("").Envar("PG_EXPORTER_EXCLUDE_DATABASES").String()
 	includeDatabases       = kingpin.Flag("include-databases", "A list of databases to include when autoDiscoverDatabases is enabled (DEPRECATED)").Default("").Envar("PG_EXPORTER_INCLUDE_DATABASES").String()
 	metricPrefix           = kingpin.Flag("metric-prefix", "A metric prefix can be used to have non-default (not \"pg\") prefixes for each of the metrics").Default("pg").Envar("PG_EXPORTER_METRIC_PREFIX").String()
-	logger                 = log.NewNopLogger()
+	logger                 = promslog.NewNopLogger()
 )
 
 // Metric name parts.
@@ -70,11 +69,11 @@ const (
 
 func main() {
 	kingpin.Version(version.Print(exporterName))
-	promlogConfig := &promlog.Config{}
-	flag.AddFlags(kingpin.CommandLine, promlogConfig)
+	promslogConfig := &promslog.Config{}
+	flag.AddFlags(kingpin.CommandLine, promslogConfig)
 	kingpin.HelpFlag.Short('h')
 	kingpin.Parse()
-	logger = promlog.New(promlogConfig)
+	logger = promslog.New(promslogConfig)
 
 	if *onlyDumpMaps {
 		dumpMaps()
@@ -83,28 +82,28 @@ func main() {
 
 	if err := c.ReloadConfig(*configFile, logger); err != nil {
 		// This is not fatal, but it means that auth must be provided for every dsn.
-		level.Warn(logger).Log("msg", "Error loading config", "err", err)
+		logger.Warn("Error loading config", "err", err)
 	}
 
 	dsns, err := getDataSources()
 	if err != nil {
-		level.Error(logger).Log("msg", "Failed reading data sources", "err", err.Error())
+		logger.Error("Failed reading data sources", "err", err.Error())
 		os.Exit(1)
 	}
 
 	excludedDatabases := strings.Split(*excludeDatabases, ",")
-	logger.Log("msg", "Excluded databases", "databases", fmt.Sprintf("%v", excludedDatabases))
+	logger.Info("Excluded databases", "databases", fmt.Sprintf("%v", excludedDatabases))
 
 	if *queriesPath != "" {
-		level.Warn(logger).Log("msg", "The extended queries.yaml config is DEPRECATED", "file", *queriesPath)
+		logger.Warn("The extended queries.yaml config is DEPRECATED", "file", *queriesPath)
 	}
 
 	if *autoDiscoverDatabases || *excludeDatabases != "" || *includeDatabases != "" {
-		level.Warn(logger).Log("msg", "Scraping additional databases via auto discovery is DEPRECATED")
+		logger.Warn("Scraping additional databases via auto discovery is DEPRECATED")
 	}
 
 	if *constantLabelsList != "" {
-		level.Warn(logger).Log("msg", "Constant labels on all metrics is DEPRECATED")
+		logger.Warn("Constant labels on all metrics is DEPRECATED")
 	}
 
 	opts := []ExporterOpt{
@@ -122,7 +121,7 @@ func main() {
 		exporter.servers.Close()
 	}()
 
-	prometheus.MustRegister(version.NewCollector(exporterName))
+	prometheus.MustRegister(versioncollector.NewCollector(exporterName))
 
 	prometheus.MustRegister(exporter)
 
@@ -139,7 +138,7 @@ func main() {
 		[]string{},
 	)
 	if err != nil {
-		level.Warn(logger).Log("msg", "Failed to create PostgresCollector", "err", err.Error())
+		logger.Warn("Failed to create PostgresCollector", "err", err.Error())
 	} else {
 		prometheus.MustRegister(pe)
 	}
@@ -160,7 +159,7 @@ func main() {
 		}
 		landingPage, err := web.NewLandingPage(landingConfig)
 		if err != nil {
-			level.Error(logger).Log("err", err)
+			logger.Error("error creating landing page", "err", err)
 			os.Exit(1)
 		}
 		http.Handle("/", landingPage)
@@ -170,7 +169,7 @@ func main() {
 
 	srv := &http.Server{}
 	if err := web.ListenAndServe(srv, webConfig, logger); err != nil {
-		level.Error(logger).Log("msg", "Error running HTTP server", "err", err)
+		logger.Error("Error running HTTP server", "err", err)
 		os.Exit(1)
 	}
 }

cmd/postgres_exporter/namespace.go

@@ -20,7 +20,6 @@ import (
 	"time"
 
 	"github.com/blang/semver/v4"
-	"github.com/go-kit/log/level"
 	"github.com/lib/pq"
 	"github.com/prometheus/client_golang/prometheus"
 )
@@ -190,10 +189,10 @@ func queryNamespaceMappings(ch chan<- prometheus.Metric, server *Server) map[str
 	scrapeStart := time.Now()
 
 	for namespace, mapping := range server.metricMap {
-		level.Debug(logger).Log("msg", "Querying namespace", "namespace", namespace)
+		logger.Debug("Querying namespace", "namespace", namespace)
 
 		if mapping.master && !server.master {
-			level.Debug(logger).Log("msg", "Query skipped...")
+			logger.Debug("Query skipped...")
 			continue
 		}
 
@@ -202,7 +201,7 @@ func queryNamespaceMappings(ch chan<- prometheus.Metric, server *Server) map[str
 			serVersion, _ := semver.Parse(server.lastMapVersion.String())
 			runServerRange, _ := semver.ParseRange(server.runonserver)
 			if !runServerRange(serVersion) {
-				level.Debug(logger).Log("msg", "Query skipped for this database version", "version", server.lastMapVersion.String(), "target_version", server.runonserver)
+				logger.Debug("Query skipped for this database version", "version", server.lastMapVersion.String(), "target_version", server.runonserver)
 				continue
 			}
 		}
@@ -233,12 +232,12 @@ func queryNamespaceMappings(ch chan<- prometheus.Metric, server *Server) map[str
 		// Serious error - a namespace disappeared
 		if err != nil {
 			namespaceErrors[namespace] = err
-			level.Info(logger).Log("err", err)
+			logger.Info("error finding namespace", "err", err)
 		}
 		// Non-serious errors - likely version or parsing problems.
 		if len(nonFatalErrors) > 0 {
 			for _, err := range nonFatalErrors {
-				level.Info(logger).Log("err", err)
+				logger.Info("error querying namespace", "err", err)
 			}
 		}
 

cmd/postgres_exporter/pg_setting.go

@@ -19,7 +19,6 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -32,7 +31,7 @@ var (
 
 // Query the pg_settings view containing runtime variables
 func querySettings(ch chan<- prometheus.Metric, server *Server) error {
-	level.Debug(logger).Log("msg", "Querying pg_setting view", "server", server)
+	logger.Debug("Querying pg_setting view", "server", server)
 
 	// pg_settings docs: https://www.postgresql.org/docs/current/static/view-pg-settings.html
 	//
@@ -68,7 +67,7 @@ type pgSetting struct {
 func (s *pgSetting) metric(labels prometheus.Labels) prometheus.Metric {
 	var (
 		err       error
-		name      = strings.Replace(s.name, ".", "_", -1)
+		name      = strings.ReplaceAll(strings.ReplaceAll(s.name, ".", "_"), "-", "_")
 		unit      = s.unit // nolint: ineffassign
 		shortDesc = fmt.Sprintf("Server Parameter: %s", s.name)
 		subsystem = "settings"
@@ -129,10 +128,10 @@ func (s *pgSetting) normaliseUnit() (val float64, unit string, err error) {
 		return
 	case "ms", "s", "min", "h", "d":
 		unit = "seconds"
-	case "B", "kB", "MB", "GB", "TB", "4kB", "8kB", "16kB", "32kB", "64kB", "16MB", "32MB", "64MB":
+	case "B", "kB", "MB", "GB", "TB", "1kB", "2kB", "4kB", "8kB", "16kB", "32kB", "64kB", "16MB", "32MB", "64MB":
 		unit = "bytes"
 	default:
-		err = fmt.Errorf("Unknown unit for runtime variable: %q", s.unit)
+		err = fmt.Errorf("unknown unit for runtime variable: %q", s.unit)
 		return
 	}
 
@@ -158,6 +157,10 @@ func (s *pgSetting) normaliseUnit() (val float64, unit string, err error) {
 		val *= math.Pow(2, 30)
 	case "TB":
 		val *= math.Pow(2, 40)
+	case "1kB":
+		val *= math.Pow(2, 10)
+	case "2kB":
+		val *= math.Pow(2, 11)
 	case "4kB":
 		val *= math.Pow(2, 12)
 	case "8kB":

cmd/postgres_exporter/pg_setting_test.go

@@ -40,7 +40,7 @@ var fixtures = []fixture{
 			unit: "seconds",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_seconds_fixture_metric_seconds", help: "Server Parameter: seconds_fixture_metric [Units converted to seconds.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_seconds_fixture_metric_seconds", help: "Server Parameter: seconds_fixture_metric [Units converted to seconds.]", constLabels: {}, variableLabels: {}}`,
 		v: 5,
 	},
 	{
@@ -56,7 +56,7 @@ var fixtures = []fixture{
 			unit: "seconds",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_milliseconds_fixture_metric_seconds", help: "Server Parameter: milliseconds_fixture_metric [Units converted to seconds.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_milliseconds_fixture_metric_seconds", help: "Server Parameter: milliseconds_fixture_metric [Units converted to seconds.]", constLabels: {}, variableLabels: {}}`,
 		v: 5,
 	},
 	{
@@ -72,7 +72,7 @@ var fixtures = []fixture{
 			unit: "bytes",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_eight_kb_fixture_metric_bytes", help: "Server Parameter: eight_kb_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_eight_kb_fixture_metric_bytes", help: "Server Parameter: eight_kb_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: {}}`,
 		v: 139264,
 	},
 	{
@@ -88,7 +88,7 @@ var fixtures = []fixture{
 			unit: "bytes",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_16_kb_real_fixture_metric_bytes", help: "Server Parameter: 16_kb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_16_kb_real_fixture_metric_bytes", help: "Server Parameter: 16_kb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: {}}`,
 		v: 49152,
 	},
 	{
@@ -104,7 +104,7 @@ var fixtures = []fixture{
 			unit: "bytes",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_16_mb_real_fixture_metric_bytes", help: "Server Parameter: 16_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_16_mb_real_fixture_metric_bytes", help: "Server Parameter: 16_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: {}}`,
 		v: 5.0331648e+07,
 	},
 	{
@@ -120,7 +120,7 @@ var fixtures = []fixture{
 			unit: "bytes",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_32_mb_real_fixture_metric_bytes", help: "Server Parameter: 32_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_32_mb_real_fixture_metric_bytes", help: "Server Parameter: 32_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: {}}`,
 		v: 1.00663296e+08,
 	},
 	{
@@ -136,7 +136,7 @@ var fixtures = []fixture{
 			unit: "bytes",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_64_mb_real_fixture_metric_bytes", help: "Server Parameter: 64_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_64_mb_real_fixture_metric_bytes", help: "Server Parameter: 64_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: {}}`,
 		v: 2.01326592e+08,
 	},
 	{
@@ -152,7 +152,7 @@ var fixtures = []fixture{
 			unit: "",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_bool_on_fixture_metric", help: "Server Parameter: bool_on_fixture_metric", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_bool_on_fixture_metric", help: "Server Parameter: bool_on_fixture_metric", constLabels: {}, variableLabels: {}}`,
 		v: 1,
 	},
 	{
@@ -168,7 +168,7 @@ var fixtures = []fixture{
 			unit: "",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_bool_off_fixture_metric", help: "Server Parameter: bool_off_fixture_metric", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_bool_off_fixture_metric", help: "Server Parameter: bool_off_fixture_metric", constLabels: {}, variableLabels: {}}`,
 		v: 0,
 	},
 	{
@@ -184,7 +184,7 @@ var fixtures = []fixture{
 			unit: "seconds",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_special_minus_one_value_seconds", help: "Server Parameter: special_minus_one_value [Units converted to seconds.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_special_minus_one_value_seconds", help: "Server Parameter: special_minus_one_value [Units converted to seconds.]", constLabels: {}, variableLabels: {}}`,
 		v: -1,
 	},
 	{
@@ -200,7 +200,7 @@ var fixtures = []fixture{
 			unit: "",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_rds_rds_superuser_reserved_connections", help: "Server Parameter: rds.rds_superuser_reserved_connections", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_rds_rds_superuser_reserved_connections", help: "Server Parameter: rds.rds_superuser_reserved_connections", constLabels: {}, variableLabels: {}}`,
 		v: 2,
 	},
 	{
@@ -214,7 +214,7 @@ var fixtures = []fixture{
 		n: normalised{
 			val:  10,
 			unit: "",
-			err:  `Unknown unit for runtime variable: "nonexistent"`,
+			err:  `unknown unit for runtime variable: "nonexistent"`,
 		},
 	},
 }
@@ -240,7 +240,7 @@ func (s *PgSettingSuite) TestNormaliseUnit(c *C) {
 func (s *PgSettingSuite) TestMetric(c *C) {
 	defer func() {
 		if r := recover(); r != nil {
-			if r.(error).Error() != `Unknown unit for runtime variable: "nonexistent"` {
+			if r.(error).Error() != `unknown unit for runtime variable: "nonexistent"` {
 				panic(r)
 			}
 		}

cmd/postgres_exporter/postgres_exporter.go

@@ -25,7 +25,6 @@ import (
 	"time"
 
 	"github.com/blang/semver/v4"
-	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -176,15 +175,6 @@ var builtinMetricMaps = map[string]intermediateMetricMap{
 		true,
 		0,
 	},
-	"pg_locks": {
-		map[string]ColumnMapping{
-			"datname": {LABEL, "Name of this database", nil, nil},
-			"mode":    {LABEL, "Type of Lock", nil, nil},
-			"count":   {GAUGE, "Number of locks", nil, nil},
-		},
-		true,
-		0,
-	},
 	"pg_stat_replication": {
 		map[string]ColumnMapping{
 			"procpid":                  {DISCARD, "Process ID of a WAL sender process", nil, semver.MustParseRange("<9.2.0")},
@@ -261,6 +251,9 @@ var builtinMetricMaps = map[string]intermediateMetricMap{
 			"state":            {LABEL, "connection state", nil, semver.MustParseRange(">=9.2.0")},
 			"usename":          {LABEL, "connection usename", nil, nil},
 			"application_name": {LABEL, "connection application_name", nil, nil},
+			"backend_type":     {LABEL, "connection backend_type", nil, nil},
+			"wait_event_type":  {LABEL, "connection wait_event_type", nil, nil},
+			"wait_event":       {LABEL, "connection wait_event", nil, nil},
 			"count":            {GAUGE, "number of connections in this state", nil, nil},
 			"max_tx_duration":  {GAUGE, "max duration in seconds any active transaction has been running", nil, nil},
 		},
@@ -293,7 +286,7 @@ func makeDescMap(pgVersion semver.Version, serverLabels prometheus.Labels, metri
 				if !columnMapping.supportedVersions(pgVersion) {
 					// It's very useful to be able to see what columns are being
 					// rejected.
-					level.Debug(logger).Log("msg", "Column is being forced to discard due to version incompatibility", "column", columnName)
+					logger.Debug("Column is being forced to discard due to version incompatibility", "column", columnName)
 					thisMap[columnName] = MetricMap{
 						discard: true,
 						conversion: func(_ interface{}) (float64, bool) {
@@ -380,7 +373,7 @@ func makeDescMap(pgVersion semver.Version, serverLabels prometheus.Labels, metri
 						case string:
 							durationString = t
 						default:
-							level.Error(logger).Log("msg", "Duration conversion metric was not a string")
+							logger.Error("Duration conversion metric was not a string")
 							return math.NaN(), false
 						}
 
@@ -390,7 +383,7 @@ func makeDescMap(pgVersion semver.Version, serverLabels prometheus.Labels, metri
 
 						d, err := time.ParseDuration(durationString)
 						if err != nil {
-							level.Error(logger).Log("msg", "Failed converting result to metric", "column", columnName, "in", in, "err", err)
+							logger.Error("Failed converting result to metric", "column", columnName, "in", in, "err", err)
 							return math.NaN(), false
 						}
 						return float64(d / time.Millisecond), true
@@ -500,7 +493,7 @@ func parseConstLabels(s string) prometheus.Labels {
 	for _, p := range parts {
 		keyValue := strings.Split(strings.TrimSpace(p), "=")
 		if len(keyValue) != 2 {
-			level.Error(logger).Log(`Wrong constant labels format, should be "key=value"`, "input", p)
+			logger.Error(`Wrong constant labels format, should be "key=value"`, "input", p)
 			continue
 		}
 		key := strings.TrimSpace(keyValue[0])
@@ -591,7 +584,7 @@ func newDesc(subsystem, name, help string, labels prometheus.Labels) *prometheus
 }
 
 func checkPostgresVersion(db *sql.DB, server string) (semver.Version, string, error) {
-	level.Debug(logger).Log("msg", "Querying PostgreSQL version", "server", server)
+	logger.Debug("Querying PostgreSQL version", "server", server)
 	versionRow := db.QueryRow("SELECT version();")
 	var versionString string
 	err := versionRow.Scan(&versionString)
@@ -614,12 +607,12 @@ func (e *Exporter) checkMapVersions(ch chan<- prometheus.Metric, server *Server)
 	}
 
 	if !e.disableDefaultMetrics && semanticVersion.LT(lowestSupportedVersion) {
-		level.Warn(logger).Log("msg", "PostgreSQL version is lower than our lowest supported version", "server", server, "version", semanticVersion, "lowest_supported_version", lowestSupportedVersion)
+		logger.Warn("PostgreSQL version is lower than our lowest supported version", "server", server, "version", semanticVersion, "lowest_supported_version", lowestSupportedVersion)
 	}
 
 	// Check if semantic version changed and recalculate maps if needed.
 	if semanticVersion.NE(server.lastMapVersion) || server.metricMap == nil {
-		level.Info(logger).Log("msg", "Semantic version changed", "server", server, "from", server.lastMapVersion, "to", semanticVersion)
+		logger.Info("Semantic version changed", "server", server, "from", server.lastMapVersion, "to", semanticVersion)
 		server.mappingMtx.Lock()
 
 		// Get Default Metrics only for master database
@@ -640,13 +633,13 @@ func (e *Exporter) checkMapVersions(ch chan<- prometheus.Metric, server *Server)
 			// Calculate the hashsum of the useQueries
 			userQueriesData, err := os.ReadFile(e.userQueriesPath)
 			if err != nil {
-				level.Error(logger).Log("msg", "Failed to reload user queries", "path", e.userQueriesPath, "err", err)
+				logger.Error("Failed to reload user queries", "path", e.userQueriesPath, "err", err)
 				e.userQueriesError.WithLabelValues(e.userQueriesPath, "").Set(1)
 			} else {
 				hashsumStr := fmt.Sprintf("%x", sha256.Sum256(userQueriesData))
 
 				if err := addQueries(userQueriesData, semanticVersion, server); err != nil {
-					level.Error(logger).Log("msg", "Failed to reload user queries", "path", e.userQueriesPath, "err", err)
+					logger.Error("Failed to reload user queries", "path", e.userQueriesPath, "err", err)
 					e.userQueriesError.WithLabelValues(e.userQueriesPath, hashsumStr).Set(1)
 				} else {
 					// Mark user queries as successfully loaded
@@ -688,7 +681,7 @@ func (e *Exporter) scrape(ch chan<- prometheus.Metric) {
 		if err := e.scrapeDSN(ch, dsn); err != nil {
 			errorsCount++
 
-			level.Error(logger).Log("err", err)
+			logger.Error("error scraping dsn", "err", err, "dsn", loggableDSN(dsn))
 
 			if _, ok := err.(*ErrorConnectToServer); ok {
 				connectionErrorsCount++

cmd/postgres_exporter/probe.go

@@ -15,17 +15,16 @@ package main
 
 import (
 	"fmt"
+	"log/slog"
 	"net/http"
 
-	"github.com/go-kit/log"
-	"github.com/go-kit/log/level"
 	"github.com/prometheus-community/postgres_exporter/collector"
 	"github.com/prometheus-community/postgres_exporter/config"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
-func handleProbe(logger log.Logger, excludeDatabases []string) http.HandlerFunc {
+func handleProbe(logger *slog.Logger, excludeDatabases []string) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		ctx := r.Context()
 		conf := c.GetConfig()
@@ -38,7 +37,7 @@ func handleProbe(logger log.Logger, excludeDatabases []string) http.HandlerFunc
 		var authModule config.AuthModule
 		authModuleName := params.Get("auth_module")
 		if authModuleName == "" {
-			level.Info(logger).Log("msg", "no auth_module specified, using default")
+			logger.Info("no auth_module specified, using default")
 		} else {
 			var ok bool
 			authModule, ok = conf.AuthModules[authModuleName]
@@ -54,14 +53,14 @@ func handleProbe(logger log.Logger, excludeDatabases []string) http.HandlerFunc
 
 		dsn, err := authModule.ConfigureTarget(target)
 		if err != nil {
-			level.Error(logger).Log("msg", "failed to configure target", "err", err)
+			logger.Error("failed to configure target", "err", err)
 			http.Error(w, fmt.Sprintf("could not configure dsn for target: %v", err), http.StatusBadRequest)
 			return
 		}
 
 		// TODO(@sysadmind): Timeout
 
-		tl := log.With(logger, "target", target)
+		tl := logger.With("target", target)
 
 		registry := prometheus.NewRegistry()
 
@@ -85,6 +84,7 @@ func handleProbe(logger log.Logger, excludeDatabases []string) http.HandlerFunc
 		// Run the probe
 		pc, err := collector.NewProbeCollector(tl, excludeDatabases, registry, dsn)
 		if err != nil {
+			logger.Error("Error creating probe collector", "err", err)
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}

cmd/postgres_exporter/queries.go

@@ -18,7 +18,6 @@ import (
 	"fmt"
 
 	"github.com/blang/semver/v4"
-	"github.com/go-kit/log/level"
 	"gopkg.in/yaml.v2"
 )
 
@@ -46,39 +45,14 @@ type OverrideQuery struct {
 // Overriding queries for namespaces above.
 // TODO: validate this is a closed set in tests, and there are no overlaps
 var queryOverrides = map[string][]OverrideQuery{
-	"pg_locks": {
-		{
-			semver.MustParseRange(">0.0.0"),
-			`SELECT pg_database.datname,tmp.mode,COALESCE(count,0) as count
-			FROM
-				(
-				  VALUES ('accesssharelock'),
-				         ('rowsharelock'),
-				         ('rowexclusivelock'),
-				         ('shareupdateexclusivelock'),
-				         ('sharelock'),
-				         ('sharerowexclusivelock'),
-				         ('exclusivelock'),
-				         ('accessexclusivelock'),
-					 ('sireadlock')
-				) AS tmp(mode) CROSS JOIN pg_database
-			LEFT JOIN
-			  (SELECT database, lower(mode) AS mode,count(*) AS count
-			  FROM pg_locks WHERE database IS NOT NULL
-			  GROUP BY database, lower(mode)
-			) AS tmp2
-			ON tmp.mode=tmp2.mode and pg_database.oid = tmp2.database ORDER BY 1`,
-		},
-	},
-
 	"pg_stat_replication": {
 		{
 			semver.MustParseRange(">=10.0.0"),
 			`
 			SELECT *,
-				(case pg_is_in_recovery() when 't' then null else pg_current_wal_lsn() end) AS pg_current_wal_lsn,
-				(case pg_is_in_recovery() when 't' then null else pg_wal_lsn_diff(pg_current_wal_lsn(), pg_lsn('0/0'))::float end) AS pg_current_wal_lsn_bytes,
-				(case pg_is_in_recovery() when 't' then null else pg_wal_lsn_diff(pg_current_wal_lsn(), replay_lsn)::float end) AS pg_wal_lsn_diff
+				(case pg_is_in_recovery() when 't' then pg_last_wal_receive_lsn() else pg_current_wal_lsn() end) AS pg_current_wal_lsn,
+				(case pg_is_in_recovery() when 't' then pg_wal_lsn_diff(pg_last_wal_receive_lsn(), pg_lsn('0/0'))::float else pg_wal_lsn_diff(pg_current_wal_lsn(), pg_lsn('0/0'))::float end) AS pg_current_wal_lsn_bytes,
+				(case pg_is_in_recovery() when 't' then pg_wal_lsn_diff(pg_last_wal_receive_lsn(), replay_lsn)::float else pg_wal_lsn_diff(pg_current_wal_lsn(), replay_lsn)::float end) AS pg_wal_lsn_diff
 			FROM pg_stat_replication
 			`,
 		},
@@ -86,8 +60,8 @@ var queryOverrides = map[string][]OverrideQuery{
 			semver.MustParseRange(">=9.2.0 <10.0.0"),
 			`
 			SELECT *,
-				(case pg_is_in_recovery() when 't' then null else pg_current_xlog_location() end) AS pg_current_xlog_location,
-				(case pg_is_in_recovery() when 't' then null else pg_xlog_location_diff(pg_current_xlog_location(), replay_location)::float end) AS pg_xlog_location_diff
+				(case pg_is_in_recovery() when 't' then pg_last_xlog_receive_location() else pg_current_xlog_location() end) AS pg_current_xlog_location,
+				(case pg_is_in_recovery() when 't' then pg_xlog_location_diff(pg_last_xlog_receive_location(), replay_location)::float else pg_xlog_location_diff(pg_current_xlog_location(), replay_location)::float end) AS pg_xlog_location_diff
 			FROM pg_stat_replication
 			`,
 		},
@@ -95,7 +69,7 @@ var queryOverrides = map[string][]OverrideQuery{
 			semver.MustParseRange("<9.2.0"),
 			`
 			SELECT *,
-				(case pg_is_in_recovery() when 't' then null else pg_current_xlog_location() end) AS pg_current_xlog_location
+				(case pg_is_in_recovery() when 't' then pg_last_xlog_receive_location() else pg_current_xlog_location() end) AS pg_current_xlog_location
 			FROM pg_stat_replication
 			`,
 		},
@@ -105,14 +79,16 @@ var queryOverrides = map[string][]OverrideQuery{
 		{
 			semver.MustParseRange(">=9.4.0 <10.0.0"),
 			`
-			SELECT slot_name, database, active, pg_xlog_location_diff(pg_current_xlog_location(), restart_lsn)
+			SELECT slot_name, database, active,
+				(case pg_is_in_recovery() when 't' then pg_xlog_location_diff(pg_last_xlog_receive_location(), restart_lsn) else pg_xlog_location_diff(pg_current_xlog_location(), restart_lsn) end) as pg_xlog_location_diff
 			FROM pg_replication_slots
 			`,
 		},
 		{
 			semver.MustParseRange(">=10.0.0"),
 			`
-			SELECT slot_name, database, active, pg_wal_lsn_diff(pg_current_wal_lsn(), restart_lsn)
+			SELECT slot_name, database, active,
+				(case pg_is_in_recovery() when 't' then pg_wal_lsn_diff(pg_last_wal_receive_lsn(), restart_lsn) else pg_wal_lsn_diff(pg_current_wal_lsn(), restart_lsn) end) as pg_wal_lsn_diff
 			FROM pg_replication_slots
 			`,
 		},
@@ -139,6 +115,9 @@ var queryOverrides = map[string][]OverrideQuery{
 				tmp.state,
 				tmp2.usename,
 				tmp2.application_name,
+				tmp2.backend_type,
+				tmp2.wait_event_type,
+				tmp2.wait_event,
 				COALESCE(count,0) as count,
 				COALESCE(max_tx_duration,0) as max_tx_duration
 			FROM
@@ -157,9 +136,13 @@ var queryOverrides = map[string][]OverrideQuery{
 					state,
 					usename,
 					application_name,
+					backend_type,
+					wait_event_type,
+					wait_event,
 					count(*) AS count,
 					MAX(EXTRACT(EPOCH FROM now() - xact_start))::float AS max_tx_duration
-				FROM pg_stat_activity GROUP BY datname,state,usename,application_name) AS tmp2
+				FROM pg_stat_activity
+				GROUP BY datname,state,usename,application_name,backend_type,wait_event_type,wait_event) AS tmp2
 				ON tmp.state = tmp2.state AND pg_database.datname = tmp2.datname
 			`,
 		},
@@ -195,7 +178,7 @@ func makeQueryOverrideMap(pgVersion semver.Version, queryOverrides map[string][]
 			}
 		}
 		if !matched {
-			level.Warn(logger).Log("msg", "No query matched override, disabling metric space", "name", name)
+			logger.Warn("No query matched override, disabling metric space", "name", name)
 			resultMap[name] = ""
 		}
 	}
@@ -216,7 +199,7 @@ func parseUserQueries(content []byte) (map[string]intermediateMetricMap, map[str
 	newQueryOverrides := make(map[string]string)
 
 	for metric, specs := range userQueries {
-		level.Debug(logger).Log("msg", "New user metric namespace from YAML metric", "metric", metric, "cache_seconds", specs.CacheSeconds)
+		logger.Debug("New user metric namespace from YAML metric", "metric", metric, "cache_seconds", specs.CacheSeconds)
 		newQueryOverrides[metric] = specs.Query
 		metricMap, ok := metricMaps[metric]
 		if !ok {
@@ -268,9 +251,9 @@ func addQueries(content []byte, pgVersion semver.Version, server *Server) error
 	for k, v := range partialExporterMap {
 		_, found := server.metricMap[k]
 		if found {
-			level.Debug(logger).Log("msg", "Overriding metric from user YAML file", "metric", k)
+			logger.Debug("Overriding metric from user YAML file", "metric", k)
 		} else {
-			level.Debug(logger).Log("msg", "Adding new metric from user YAML file", "metric", k)
+			logger.Debug("Adding new metric from user YAML file", "metric", k)
 		}
 		server.metricMap[k] = v
 	}
@@ -279,9 +262,9 @@ func addQueries(content []byte, pgVersion semver.Version, server *Server) error
 	for k, v := range newQueryOverrides {
 		_, found := server.queryOverrides[k]
 		if found {
-			level.Debug(logger).Log("msg", "Overriding query override from user YAML file", "query_override", k)
+			logger.Debug("Overriding query override from user YAML file", "query_override", k)
 		} else {
-			level.Debug(logger).Log("msg", "Adding new query override from user YAML file", "query_override", k)
+			logger.Debug("Adding new query override from user YAML file", "query_override", k)
 		}
 		server.queryOverrides[k] = v
 	}

cmd/postgres_exporter/server.go

@@ -20,7 +20,6 @@ import (
 	"time"
 
 	"github.com/blang/semver/v4"
-	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -71,7 +70,7 @@ func NewServer(dsn string, opts ...ServerOpt) (*Server, error) {
 	db.SetMaxOpenConns(1)
 	db.SetMaxIdleConns(1)
 
-	level.Info(logger).Log("msg", "Established new database connection", "fingerprint", fingerprint)
+	logger.Info("Established new database connection", "fingerprint", fingerprint)
 
 	s := &Server{
 		db:     db,
@@ -98,7 +97,7 @@ func (s *Server) Close() error {
 func (s *Server) Ping() error {
 	if err := s.db.Ping(); err != nil {
 		if cerr := s.Close(); cerr != nil {
-			level.Error(logger).Log("msg", "Error while closing non-pinging DB connection", "server", s, "err", cerr)
+			logger.Error("Error while closing non-pinging DB connection", "server", s, "err", cerr)
 		}
 		return err
 	}
@@ -184,7 +183,7 @@ func (s *Servers) Close() {
 	defer s.m.Unlock()
 	for _, server := range s.servers {
 		if err := server.Close(); err != nil {
-			level.Error(logger).Log("msg", "Failed to close connection", "server", server, "err", err)
+			logger.Error("Failed to close connection", "server", server, "err", err)
 		}
 	}
 }

cmd/postgres_exporter/util.go

@@ -21,7 +21,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-kit/log/level"
 	"github.com/lib/pq"
 )
 
@@ -82,14 +81,14 @@ func dbToFloat64(t interface{}) (float64, bool) {
 		strV := string(v)
 		result, err := strconv.ParseFloat(strV, 64)
 		if err != nil {
-			level.Info(logger).Log("msg", "Could not parse []byte", "err", err)
+			logger.Info("Could not parse []byte", "err", err)
 			return math.NaN(), false
 		}
 		return result, true
 	case string:
 		result, err := strconv.ParseFloat(v, 64)
 		if err != nil {
-			level.Info(logger).Log("msg", "Could not parse string", "err", err)
+			logger.Info("Could not parse string", "err", err)
 			return math.NaN(), false
 		}
 		return result, true
@@ -122,14 +121,14 @@ func dbToUint64(t interface{}) (uint64, bool) {
 		strV := string(v)
 		result, err := strconv.ParseUint(strV, 10, 64)
 		if err != nil {
-			level.Info(logger).Log("msg", "Could not parse []byte", "err", err)
+			logger.Info("Could not parse []byte", "err", err)
 			return 0, false
 		}
 		return result, true
 	case string:
 		result, err := strconv.ParseUint(v, 10, 64)
 		if err != nil {
-			level.Info(logger).Log("msg", "Could not parse string", "err", err)
+			logger.Info("Could not parse string", "err", err)
 			return 0, false
 		}
 		return result, true
@@ -160,7 +159,7 @@ func dbToString(t interface{}) (string, bool) {
 		// Try and convert to string
 		return string(v), true
 	case string:
-		return v, true
+		return strings.ToValidUTF8(v, "<22>"), true
 	case bool:
 		if v {
 			return "true", true

collector/collector.go

@@ -17,12 +17,11 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"log/slog"
 	"sync"
 	"time"
 
 	"github.com/alecthomas/kingpin/v2"
-	"github.com/go-kit/log"
-	"github.com/go-kit/log/level"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -62,7 +61,7 @@ type Collector interface {
 }
 
 type collectorConfig struct {
-	logger           log.Logger
+	logger           *slog.Logger
 	excludeDatabases []string
 }
 
@@ -89,7 +88,7 @@ func registerCollector(name string, isDefaultEnabled bool, createFunc func(colle
 // PostgresCollector implements the prometheus.Collector interface.
 type PostgresCollector struct {
 	Collectors map[string]Collector
-	logger     log.Logger
+	logger     *slog.Logger
 
 	instance *instance
 }
@@ -97,7 +96,7 @@ type PostgresCollector struct {
 type Option func(*PostgresCollector) error
 
 // NewPostgresCollector creates a new PostgresCollector.
-func NewPostgresCollector(logger log.Logger, excludeDatabases []string, dsn string, filters []string, options ...Option) (*PostgresCollector, error) {
+func NewPostgresCollector(logger *slog.Logger, excludeDatabases []string, dsn string, filters []string, options ...Option) (*PostgresCollector, error) {
 	p := &PostgresCollector{
 		logger: logger,
 	}
@@ -131,7 +130,7 @@ func NewPostgresCollector(logger log.Logger, excludeDatabases []string, dsn stri
 			collectors[key] = collector
 		} else {
 			collector, err := factories[key](collectorConfig{
-				logger:           log.With(logger, "collector", key),
+				logger:           logger.With("collector", key),
 				excludeDatabases: excludeDatabases,
 			})
 			if err != nil {
@@ -166,18 +165,30 @@ func (p PostgresCollector) Describe(ch chan<- *prometheus.Desc) {
 // Collect implements the prometheus.Collector interface.
 func (p PostgresCollector) Collect(ch chan<- prometheus.Metric) {
 	ctx := context.TODO()
+
+	// copy the instance so that concurrent scrapes have independent instances
+	inst := p.instance.copy()
+
+	// Set up the database connection for the collector.
+	err := inst.setup()
+	if err != nil {
+		p.logger.Error("Error opening connection to database", "err", err)
+		return
+	}
+	defer inst.Close()
+
 	wg := sync.WaitGroup{}
 	wg.Add(len(p.Collectors))
 	for name, c := range p.Collectors {
 		go func(name string, c Collector) {
-			execute(ctx, name, c, p.instance, ch, p.logger)
+			execute(ctx, name, c, inst, ch, p.logger)
 			wg.Done()
 		}(name, c)
 	}
 	wg.Wait()
 }
 
-func execute(ctx context.Context, name string, c Collector, instance *instance, ch chan<- prometheus.Metric, logger log.Logger) {
+func execute(ctx context.Context, name string, c Collector, instance *instance, ch chan<- prometheus.Metric, logger *slog.Logger) {
 	begin := time.Now()
 	err := c.Update(ctx, instance, ch)
 	duration := time.Since(begin)
@@ -185,13 +196,13 @@ func execute(ctx context.Context, name string, c Collector, instance *instance,
 
 	if err != nil {
 		if IsNoDataError(err) {
-			level.Debug(logger).Log("msg", "collector returned no data", "name", name, "duration_seconds", duration.Seconds(), "err", err)
+			logger.Debug("collector returned no data", "name", name, "duration_seconds", duration.Seconds(), "err", err)
 		} else {
-			level.Error(logger).Log("msg", "collector failed", "name", name, "duration_seconds", duration.Seconds(), "err", err)
+			logger.Error("collector failed", "name", name, "duration_seconds", duration.Seconds(), "err", err)
 		}
 		success = 0
 	} else {
-		level.Debug(logger).Log("msg", "collector succeeded", "name", name, "duration_seconds", duration.Seconds())
+		logger.Debug("collector succeeded", "name", name, "duration_seconds", duration.Seconds())
 		success = 1
 	}
 	ch <- prometheus.MustNewConstMetric(scrapeDurationDesc, prometheus.GaugeValue, duration.Seconds(), name)

collector/collector_test.go

@@ -48,9 +48,15 @@ func readMetric(m prometheus.Metric) MetricResult {
 
 func sanitizeQuery(q string) string {
 	q = strings.Join(strings.Fields(q), " ")
-	q = strings.Replace(q, "(", "\\(", -1)
-	q = strings.Replace(q, ")", "\\)", -1)
-	q = strings.Replace(q, "*", "\\*", -1)
-	q = strings.Replace(q, "$", "\\$", -1)
+	q = strings.ReplaceAll(q, "(", "\\(")
+	q = strings.ReplaceAll(q, "?", "\\?")
+	q = strings.ReplaceAll(q, ")", "\\)")
+	q = strings.ReplaceAll(q, "[", "\\[")
+	q = strings.ReplaceAll(q, "]", "\\]")
+	q = strings.ReplaceAll(q, "{", "\\{")
+	q = strings.ReplaceAll(q, "}", "\\}")
+	q = strings.ReplaceAll(q, "*", "\\*")
+	q = strings.ReplaceAll(q, "^", "\\^")
+	q = strings.ReplaceAll(q, "$", "\\$")
 	return q
 }

collector/instance.go

@@ -22,29 +22,50 @@ import (
 )
 
 type instance struct {
+	dsn     string
 	db      *sql.DB
 	version semver.Version
 }
 
 func newInstance(dsn string) (*instance, error) {
-	i := &instance{}
+	i := &instance{
+		dsn: dsn,
+	}
+
+	// "Create" a database handle to verify the DSN provided is valid.
+	// Open is not guaranteed to create a connection.
 	db, err := sql.Open("postgres", dsn)
 	if err != nil {
 		return nil, err
 	}
+	db.Close()
+
+	return i, nil
+}
+
+// copy returns a copy of the instance.
+func (i *instance) copy() *instance {
+	return &instance{
+		dsn: i.dsn,
+	}
+}
+
+func (i *instance) setup() error {
+	db, err := sql.Open("postgres", i.dsn)
+	if err != nil {
+		return err
+	}
 	db.SetMaxOpenConns(1)
 	db.SetMaxIdleConns(1)
 	i.db = db
 
-	version, err := queryVersion(db)
+	version, err := queryVersion(i.db)
 	if err != nil {
-		db.Close()
-		return nil, err
+		return fmt.Errorf("error querying postgresql version: %w", err)
+	} else {
+		i.version = version
 	}
-
-	i.version = version
-
-	return i, nil
+	return nil
 }
 
 func (i *instance) getDB() *sql.DB {

collector/pg_database.go

@@ -16,8 +16,8 @@ package collector
 import (
 	"context"
 	"database/sql"
+	"log/slog"
 
-	"github.com/go-kit/log"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -28,7 +28,7 @@ func init() {
 }
 
 type PGDatabaseCollector struct {
-	log               log.Logger
+	log               *slog.Logger
 	excludedDatabases []string
 }
 
@@ -53,12 +53,21 @@ var (
 		"Disk space used by the database",
 		[]string{"datname"}, nil,
 	)
+	pgDatabaseConnectionLimitsDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(
+			namespace,
+			databaseSubsystem,
+			"connection_limit",
+		),
+		"Connection limit set for the database",
+		[]string{"datname"}, nil,
+	)
 
-	pgDatabaseQuery     = "SELECT pg_database.datname FROM pg_database;"
+	pgDatabaseQuery     = "SELECT pg_database.datname, pg_database.datconnlimit FROM pg_database;"
 	pgDatabaseSizeQuery = "SELECT pg_database_size($1)"
 )
 
-// Update implements Collector and exposes database size.
+// Update implements Collector and exposes database size and connection limits.
 // It is called by the Prometheus registry when collecting metrics.
 // The list of databases is retrieved from pg_database and filtered
 // by the excludeDatabase config parameter. The tradeoff here is that
@@ -81,21 +90,32 @@ func (c PGDatabaseCollector) Update(ctx context.Context, instance *instance, ch
 
 	for rows.Next() {
 		var datname sql.NullString
-		if err := rows.Scan(&datname); err != nil {
+		var connLimit sql.NullInt64
+		if err := rows.Scan(&datname, &connLimit); err != nil {
 			return err
 		}
 
 		if !datname.Valid {
 			continue
 		}
+		database := datname.String
 		// Ignore excluded databases
 		// Filtering is done here instead of in the query to avoid
 		// a complicated NOT IN query with a variable number of parameters
-		if sliceContains(c.excludedDatabases, datname.String) {
+		if sliceContains(c.excludedDatabases, database) {
 			continue
 		}
 
-		databases = append(databases, datname.String)
+		databases = append(databases, database)
+
+		connLimitMetric := 0.0
+		if connLimit.Valid {
+			connLimitMetric = float64(connLimit.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			pgDatabaseConnectionLimitsDesc,
+			prometheus.GaugeValue, connLimitMetric, database,
+		)
 	}
 
 	// Query the size of the databases
@@ -114,11 +134,9 @@ func (c PGDatabaseCollector) Update(ctx context.Context, instance *instance, ch
 			pgDatabaseSizeDesc,
 			prometheus.GaugeValue, sizeMetric, datname,
 		)
+
 	}
-	if err := rows.Err(); err != nil {
-		return err
-	}
-	return nil
+	return rows.Err()
 }
 
 func sliceContains(slice []string, s string) bool {

collector/pg_database_test.go

@@ -31,8 +31,8 @@ func TestPGDatabaseCollector(t *testing.T) {
 
 	inst := &instance{db: db}
 
-	mock.ExpectQuery(sanitizeQuery(pgDatabaseQuery)).WillReturnRows(sqlmock.NewRows([]string{"datname"}).
-		AddRow("postgres"))
+	mock.ExpectQuery(sanitizeQuery(pgDatabaseQuery)).WillReturnRows(sqlmock.NewRows([]string{"datname", "datconnlimit"}).
+		AddRow("postgres", 15))
 
 	mock.ExpectQuery(sanitizeQuery(pgDatabaseSizeQuery)).WithArgs("postgres").WillReturnRows(sqlmock.NewRows([]string{"pg_database_size"}).
 		AddRow(1024))
@@ -47,6 +47,7 @@ func TestPGDatabaseCollector(t *testing.T) {
 	}()
 
 	expected := []MetricResult{
+		{labels: labelMap{"datname": "postgres"}, value: 15, metricType: dto.MetricType_GAUGE},
 		{labels: labelMap{"datname": "postgres"}, value: 1024, metricType: dto.MetricType_GAUGE},
 	}
 	convey.Convey("Metrics comparison", t, func() {
@@ -71,8 +72,8 @@ func TestPGDatabaseCollectorNullMetric(t *testing.T) {
 
 	inst := &instance{db: db}
 
-	mock.ExpectQuery(sanitizeQuery(pgDatabaseQuery)).WillReturnRows(sqlmock.NewRows([]string{"datname"}).
-		AddRow("postgres"))
+	mock.ExpectQuery(sanitizeQuery(pgDatabaseQuery)).WillReturnRows(sqlmock.NewRows([]string{"datname", "datconnlimit"}).
+		AddRow("postgres", nil))
 
 	mock.ExpectQuery(sanitizeQuery(pgDatabaseSizeQuery)).WithArgs("postgres").WillReturnRows(sqlmock.NewRows([]string{"pg_database_size"}).
 		AddRow(nil))
@@ -88,6 +89,7 @@ func TestPGDatabaseCollectorNullMetric(t *testing.T) {
 
 	expected := []MetricResult{
 		{labels: labelMap{"datname": "postgres"}, value: 0, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"datname": "postgres"}, value: 0, metricType: dto.MetricType_GAUGE},
 	}
 	convey.Convey("Metrics comparison", t, func() {
 		for _, expect := range expected {

collector/pg_database_wraparound.go

@@ -0,0 +1,114 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"context"
+	"database/sql"
+	"log/slog"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const databaseWraparoundSubsystem = "database_wraparound"
+
+func init() {
+	registerCollector(databaseWraparoundSubsystem, defaultDisabled, NewPGDatabaseWraparoundCollector)
+}
+
+type PGDatabaseWraparoundCollector struct {
+	log *slog.Logger
+}
+
+func NewPGDatabaseWraparoundCollector(config collectorConfig) (Collector, error) {
+	return &PGDatabaseWraparoundCollector{log: config.logger}, nil
+}
+
+var (
+	databaseWraparoundAgeDatfrozenxid = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, databaseWraparoundSubsystem, "age_datfrozenxid_seconds"),
+		"Age of the oldest transaction ID that has not been frozen.",
+		[]string{"datname"},
+		prometheus.Labels{},
+	)
+	databaseWraparoundAgeDatminmxid = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, databaseWraparoundSubsystem, "age_datminmxid_seconds"),
+		"Age of the oldest multi-transaction ID that has been replaced with a transaction ID.",
+		[]string{"datname"},
+		prometheus.Labels{},
+	)
+
+	databaseWraparoundQuery = `
+	SELECT
+		datname,
+		age(d.datfrozenxid) as age_datfrozenxid,
+		mxid_age(d.datminmxid) as age_datminmxid
+	FROM
+		pg_catalog.pg_database d
+	WHERE
+		d.datallowconn
+	`
+)
+
+func (c *PGDatabaseWraparoundCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+	rows, err := db.QueryContext(ctx,
+		databaseWraparoundQuery)
+
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var datname sql.NullString
+		var ageDatfrozenxid, ageDatminmxid sql.NullFloat64
+
+		if err := rows.Scan(&datname, &ageDatfrozenxid, &ageDatminmxid); err != nil {
+			return err
+		}
+
+		if !datname.Valid {
+			c.log.Debug("Skipping database with NULL name")
+			continue
+		}
+		if !ageDatfrozenxid.Valid {
+			c.log.Debug("Skipping stat emission with NULL age_datfrozenxid")
+			continue
+		}
+		if !ageDatminmxid.Valid {
+			c.log.Debug("Skipping stat emission with NULL age_datminmxid")
+			continue
+		}
+
+		ageDatfrozenxidMetric := ageDatfrozenxid.Float64
+
+		ch <- prometheus.MustNewConstMetric(
+			databaseWraparoundAgeDatfrozenxid,
+			prometheus.GaugeValue,
+			ageDatfrozenxidMetric, datname.String,
+		)
+
+		ageDatminmxidMetric := ageDatminmxid.Float64
+		ch <- prometheus.MustNewConstMetric(
+			databaseWraparoundAgeDatminmxid,
+			prometheus.GaugeValue,
+			ageDatminmxidMetric, datname.String,
+		)
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	return nil
+}

collector/pg_database_wraparound_test.go

@@ -0,0 +1,64 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestPGDatabaseWraparoundCollector(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+	inst := &instance{db: db}
+	columns := []string{
+		"datname",
+		"age_datfrozenxid",
+		"age_datminmxid",
+	}
+	rows := sqlmock.NewRows(columns).
+		AddRow("newreddit", 87126426, 0)
+
+	mock.ExpectQuery(sanitizeQuery(databaseWraparoundQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGDatabaseWraparoundCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGDatabaseWraparoundCollector.Update: %s", err)
+		}
+	}()
+	expected := []MetricResult{
+		{labels: labelMap{"datname": "newreddit"}, value: 87126426, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"datname": "newreddit"}, value: 0, metricType: dto.MetricType_GAUGE},
+	}
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}

collector/pg_locks.go

@@ -0,0 +1,129 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"context"
+	"database/sql"
+	"log/slog"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const locksSubsystem = "locks"
+
+func init() {
+	registerCollector(locksSubsystem, defaultEnabled, NewPGLocksCollector)
+}
+
+type PGLocksCollector struct {
+	log *slog.Logger
+}
+
+func NewPGLocksCollector(config collectorConfig) (Collector, error) {
+	return &PGLocksCollector{
+		log: config.logger,
+	}, nil
+}
+
+var (
+	pgLocksDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(
+			namespace,
+			locksSubsystem,
+			"count",
+		),
+		"Number of locks",
+		[]string{"datname", "mode"}, nil,
+	)
+
+	pgLocksQuery = `
+		SELECT 
+		  pg_database.datname as datname,
+		  tmp.mode as mode,
+		  COALESCE(count, 0) as count 
+		FROM 
+		  (
+		    VALUES 
+		      ('accesssharelock'), 
+		      ('rowsharelock'), 
+		      ('rowexclusivelock'), 
+		      ('shareupdateexclusivelock'), 
+		      ('sharelock'), 
+		      ('sharerowexclusivelock'), 
+		      ('exclusivelock'), 
+		      ('accessexclusivelock'), 
+		      ('sireadlock')
+		  ) AS tmp(mode)
+		  CROSS JOIN pg_database 
+		  LEFT JOIN (
+		    SELECT 
+		      database, 
+		      lower(mode) AS mode, 
+		      count(*) AS count 
+		    FROM 
+		      pg_locks 
+		    WHERE 
+		      database IS NOT NULL 
+		    GROUP BY 
+		      database, 
+		      lower(mode)
+		  ) AS tmp2 ON tmp.mode = tmp2.mode 
+		  and pg_database.oid = tmp2.database 
+		ORDER BY 
+		  1
+	`
+)
+
+// Update implements Collector and exposes database locks.
+// It is called by the Prometheus registry when collecting metrics.
+func (c PGLocksCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+	// Query the list of databases
+	rows, err := db.QueryContext(ctx,
+		pgLocksQuery,
+	)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	var datname, mode sql.NullString
+	var count sql.NullInt64
+
+	for rows.Next() {
+		if err := rows.Scan(&datname, &mode, &count); err != nil {
+			return err
+		}
+
+		if !datname.Valid || !mode.Valid {
+			continue
+		}
+
+		countMetric := 0.0
+		if count.Valid {
+			countMetric = float64(count.Int64)
+		}
+
+		ch <- prometheus.MustNewConstMetric(
+			pgLocksDesc,
+			prometheus.GaugeValue, countMetric,
+			datname.String, mode.String,
+		)
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	return nil
+}

collector/pg_locks_test.go

@@ -0,0 +1,60 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestPGLocksCollector(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db}
+
+	rows := sqlmock.NewRows([]string{"datname", "mode", "count"}).
+		AddRow("test", "exclusivelock", 42)
+
+	mock.ExpectQuery(sanitizeQuery(pgLocksQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGLocksCollector{}
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGLocksCollector.Update: %s", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{"datname": "test", "mode": "exclusivelock"}, value: 42, metricType: dto.MetricType_GAUGE},
+	}
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}

collector/pg_long_running_transactions.go

@@ -0,0 +1,95 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const longRunningTransactionsSubsystem = "long_running_transactions"
+
+func init() {
+	registerCollector(longRunningTransactionsSubsystem, defaultDisabled, NewPGLongRunningTransactionsCollector)
+}
+
+type PGLongRunningTransactionsCollector struct {
+	log *slog.Logger
+}
+
+func NewPGLongRunningTransactionsCollector(config collectorConfig) (Collector, error) {
+	return &PGLongRunningTransactionsCollector{log: config.logger}, nil
+}
+
+var (
+	longRunningTransactionsCount = prometheus.NewDesc(
+		"pg_long_running_transactions",
+		"Current number of long running transactions",
+		[]string{},
+		prometheus.Labels{},
+	)
+
+	longRunningTransactionsAgeInSeconds = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, longRunningTransactionsSubsystem, "oldest_timestamp_seconds"),
+		"The current maximum transaction age in seconds",
+		[]string{},
+		prometheus.Labels{},
+	)
+
+	longRunningTransactionsQuery = `
+	SELECT                                                              
+    COUNT(*) as transactions,
+    MAX(EXTRACT(EPOCH FROM clock_timestamp() - pg_stat_activity.xact_start)) AS oldest_timestamp_seconds
+FROM pg_catalog.pg_stat_activity
+WHERE state IS DISTINCT FROM 'idle'
+AND query NOT LIKE 'autovacuum:%'
+AND pg_stat_activity.xact_start IS NOT NULL;
+	`
+)
+
+func (PGLongRunningTransactionsCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+	rows, err := db.QueryContext(ctx,
+		longRunningTransactionsQuery)
+
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var transactions, ageInSeconds float64
+
+		if err := rows.Scan(&transactions, &ageInSeconds); err != nil {
+			return err
+		}
+
+		ch <- prometheus.MustNewConstMetric(
+			longRunningTransactionsCount,
+			prometheus.GaugeValue,
+			transactions,
+		)
+		ch <- prometheus.MustNewConstMetric(
+			longRunningTransactionsAgeInSeconds,
+			prometheus.GaugeValue,
+			ageInSeconds,
+		)
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	return nil
+}

collector/pg_long_running_transactions_test.go

@@ -0,0 +1,63 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestPGLongRunningTransactionsCollector(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+	inst := &instance{db: db}
+	columns := []string{
+		"transactions",
+		"age_in_seconds",
+	}
+	rows := sqlmock.NewRows(columns).
+		AddRow(20, 1200)
+
+	mock.ExpectQuery(sanitizeQuery(longRunningTransactionsQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGLongRunningTransactionsCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGLongRunningTransactionsCollector.Update: %s", err)
+		}
+	}()
+	expected := []MetricResult{
+		{labels: labelMap{}, value: 20, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{}, value: 1200, metricType: dto.MetricType_GAUGE},
+	}
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}

collector/pg_postmaster.go

@@ -23,7 +23,7 @@ import (
 const postmasterSubsystem = "postmaster"
 
 func init() {
-	registerCollector(postmasterSubsystem, defaultEnabled, NewPGPostmasterCollector)
+	registerCollector(postmasterSubsystem, defaultDisabled, NewPGPostmasterCollector)
 }
 
 type PGPostmasterCollector struct {
@@ -44,7 +44,7 @@ var (
 		[]string{}, nil,
 	)
 
-	pgPostmasterQuery = "SELECT pg_postmaster_start_time from pg_postmaster_start_time();"
+	pgPostmasterQuery = "SELECT extract(epoch from pg_postmaster_start_time) from pg_postmaster_start_time();"
 )
 
 func (c *PGPostmasterCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {

collector/pg_process_idle.go

@@ -16,8 +16,9 @@ package collector
 import (
 	"context"
 	"database/sql"
+	"log/slog"
 
-	"github.com/go-kit/log"
+	"github.com/lib/pq"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -27,7 +28,7 @@ func init() {
 }
 
 type PGProcessIdleCollector struct {
-	log log.Logger
+	log *slog.Logger
 }
 
 const processIdleSubsystem = "process_idle"
@@ -39,25 +40,27 @@ func NewPGProcessIdleCollector(config collectorConfig) (Collector, error) {
 var pgProcessIdleSeconds = prometheus.NewDesc(
 	prometheus.BuildFQName(namespace, processIdleSubsystem, "seconds"),
 	"Idle time of server processes",
-	[]string{"application_name"},
+	[]string{"state", "application_name"},
 	prometheus.Labels{},
 )
 
-func (PGProcessIdleCollector) Update(ctx context.Context, inst *instance, ch chan<- prometheus.Metric) error {
-	db := inst.getDB()
+func (PGProcessIdleCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
 	row := db.QueryRowContext(ctx,
 		`WITH
 			metrics AS (
 				SELECT
+				state,
 				application_name,
 				SUM(EXTRACT(EPOCH FROM (CURRENT_TIMESTAMP - state_change))::bigint)::float AS process_idle_seconds_sum,
 				COUNT(*) AS process_idle_seconds_count
 				FROM pg_stat_activity
-				WHERE state = 'idle'
-				GROUP BY application_name
+				WHERE state ~ '^idle'
+				GROUP BY state, application_name
 			),
 			buckets AS (
 				SELECT
+				state,
 				application_name,
 				le,
 				SUM(
@@ -69,35 +72,42 @@ func (PGProcessIdleCollector) Update(ctx context.Context, inst *instance, ch cha
 				FROM
 				pg_stat_activity,
 				UNNEST(ARRAY[1, 2, 5, 15, 30, 60, 90, 120, 300]) AS le
-				GROUP BY application_name, le
-				ORDER BY application_name, le
+				GROUP BY state, application_name, le
+				ORDER BY state, application_name, le
 			)
 			SELECT
+			state,
 			application_name,
 			process_idle_seconds_sum as seconds_sum,
 			process_idle_seconds_count as seconds_count,
 			ARRAY_AGG(le) AS seconds,
 			ARRAY_AGG(bucket) AS seconds_bucket
-			FROM metrics JOIN buckets USING (application_name)
-			GROUP BY 1, 2, 3;`)
+			FROM metrics JOIN buckets USING (state, application_name)
+			GROUP BY 1, 2, 3, 4;`)
 
+	var state sql.NullString
 	var applicationName sql.NullString
-	var secondsSum sql.NullInt64
+	var secondsSum sql.NullFloat64
 	var secondsCount sql.NullInt64
-	var seconds []int64
-	var secondsBucket []uint64
+	var seconds []float64
+	var secondsBucket []int64
 
-	err := row.Scan(&applicationName, &secondsSum, &secondsCount, &seconds, &secondsBucket)
+	err := row.Scan(&state, &applicationName, &secondsSum, &secondsCount, pq.Array(&seconds), pq.Array(&secondsBucket))
+	if err != nil {
+		return err
+	}
 
 	var buckets = make(map[float64]uint64, len(seconds))
 	for i, second := range seconds {
 		if i >= len(secondsBucket) {
 			break
 		}
-		buckets[float64(second)] = secondsBucket[i]
+		buckets[second] = uint64(secondsBucket[i])
 	}
-	if err != nil {
-		return err
+
+	stateLabel := "unknown"
+	if state.Valid {
+		stateLabel = state.String
 	}
 
 	applicationNameLabel := "unknown"
@@ -111,12 +121,12 @@ func (PGProcessIdleCollector) Update(ctx context.Context, inst *instance, ch cha
 	}
 	secondsSumMetric := 0.0
 	if secondsSum.Valid {
-		secondsSumMetric = float64(secondsSum.Int64)
+		secondsSumMetric = secondsSum.Float64
 	}
 	ch <- prometheus.MustNewConstHistogram(
 		pgProcessIdleSeconds,
 		secondsCountMetric, secondsSumMetric, buckets,
-		applicationNameLabel,
+		stateLabel, applicationNameLabel,
 	)
 	return nil
 }

collector/pg_replication.go

@@ -15,7 +15,6 @@ package collector
 
 import (
 	"context"
-	"database/sql"
 
 	"github.com/prometheus/client_golang/prometheus"
 )
@@ -30,7 +29,7 @@ type PGReplicationCollector struct {
 }
 
 func NewPGReplicationCollector(collectorConfig) (Collector, error) {
-	return &PGPostmasterCollector{}, nil
+	return &PGReplicationCollector{}, nil
 }
 
 var (
@@ -52,26 +51,39 @@ var (
 		"Indicates if the server is a replica",
 		[]string{}, nil,
 	)
+	pgReplicationLastReplay = prometheus.NewDesc(
+		prometheus.BuildFQName(
+			namespace,
+			replicationSubsystem,
+			"last_replay_seconds",
+		),
+		"Age of last replay in seconds",
+		[]string{}, nil,
+	)
 
 	pgReplicationQuery = `SELECT
 	CASE
 		WHEN NOT pg_is_in_recovery() THEN 0
+                WHEN pg_last_wal_receive_lsn () = pg_last_wal_replay_lsn () THEN 0
 		ELSE GREATEST (0, EXTRACT(EPOCH FROM (now() - pg_last_xact_replay_timestamp())))
 	END AS lag,
 	CASE
 		WHEN pg_is_in_recovery() THEN 1
 		ELSE 0
-	END as is_replica`
+	END as is_replica,
+	GREATEST (0, EXTRACT(EPOCH FROM (now() - pg_last_xact_replay_timestamp()))) as last_replay`
 )
 
-func (c *PGReplicationCollector) Update(ctx context.Context, db *sql.DB, ch chan<- prometheus.Metric) error {
+func (c *PGReplicationCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
 	row := db.QueryRowContext(ctx,
 		pgReplicationQuery,
 	)
 
 	var lag float64
 	var isReplica int64
-	err := row.Scan(&lag, &isReplica)
+	var replayAge float64
+	err := row.Scan(&lag, &isReplica, &replayAge)
 	if err != nil {
 		return err
 	}
@@ -83,5 +95,9 @@ func (c *PGReplicationCollector) Update(ctx context.Context, db *sql.DB, ch chan
 		pgReplicationIsReplica,
 		prometheus.GaugeValue, float64(isReplica),
 	)
+	ch <- prometheus.MustNewConstMetric(
+		pgReplicationLastReplay,
+		prometheus.GaugeValue, replayAge,
+	)
 	return nil
 }

collector/pg_replication_slot.go

@@ -16,8 +16,9 @@ package collector
 import (
 	"context"
 	"database/sql"
+	"log/slog"
 
-	"github.com/go-kit/log"
+	"github.com/blang/semver/v4"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -28,7 +29,7 @@ func init() {
 }
 
 type PGReplicationSlotCollector struct {
-	log log.Logger
+	log *slog.Logger
 }
 
 func NewPGReplicationSlotCollector(config collectorConfig) (Collector, error) {
@@ -43,7 +44,7 @@ var (
 			"slot_current_wal_lsn",
 		),
 		"current wal lsn value",
-		[]string{"slot_name"}, nil,
+		[]string{"slot_name", "slot_type"}, nil,
 	)
 	pgReplicationSlotCurrentFlushDesc = prometheus.NewDesc(
 		prometheus.BuildFQName(
@@ -52,7 +53,7 @@ var (
 			"slot_confirmed_flush_lsn",
 		),
 		"last lsn confirmed flushed to the replication slot",
-		[]string{"slot_name"}, nil,
+		[]string{"slot_name", "slot_type"}, nil,
 	)
 	pgReplicationSlotIsActiveDesc = prometheus.NewDesc(
 		prometheus.BuildFQName(
@@ -61,22 +62,62 @@ var (
 			"slot_is_active",
 		),
 		"whether the replication slot is active or not",
-		[]string{"slot_name"}, nil,
+		[]string{"slot_name", "slot_type"}, nil,
+	)
+	pgReplicationSlotSafeWal = prometheus.NewDesc(
+		prometheus.BuildFQName(
+			namespace,
+			replicationSlotSubsystem,
+			"safe_wal_size_bytes",
+		),
+		"number of bytes that can be written to WAL such that this slot is not in danger of getting in state lost",
+		[]string{"slot_name", "slot_type"}, nil,
+	)
+	pgReplicationSlotWalStatus = prometheus.NewDesc(
+		prometheus.BuildFQName(
+			namespace,
+			replicationSlotSubsystem,
+			"wal_status",
+		),
+		"availability of WAL files claimed by this slot",
+		[]string{"slot_name", "slot_type", "wal_status"}, nil,
 	)
-
 	pgReplicationSlotQuery = `SELECT
 		slot_name,
-		pg_current_wal_lsn() - '0/0' AS current_wal_lsn,
-		coalesce(confirmed_flush_lsn, '0/0') - '0/0',
+		slot_type,
+		CASE WHEN pg_is_in_recovery() THEN
+		    pg_last_wal_receive_lsn() - '0/0'
+		ELSE
+		    pg_current_wal_lsn() - '0/0'
+		END AS current_wal_lsn,
+		COALESCE(confirmed_flush_lsn, '0/0') - '0/0' AS confirmed_flush_lsn,
 		active
-	FROM
-		pg_replication_slots;`
+	FROM pg_replication_slots;`
+	pgReplicationSlotNewQuery = `SELECT
+		slot_name,
+		slot_type,
+		CASE WHEN pg_is_in_recovery() THEN
+		    pg_last_wal_receive_lsn() - '0/0'
+		ELSE
+		    pg_current_wal_lsn() - '0/0'
+		END AS current_wal_lsn,
+		COALESCE(confirmed_flush_lsn, '0/0') - '0/0' AS confirmed_flush_lsn,
+		active,
+		safe_wal_size,
+		wal_status
+	FROM pg_replication_slots;`
 )
 
 func (PGReplicationSlotCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	query := pgReplicationSlotQuery
+	abovePG13 := instance.version.GTE(semver.MustParse("13.0.0"))
+	if abovePG13 {
+		query = pgReplicationSlotNewQuery
+	}
+
 	db := instance.getDB()
 	rows, err := db.QueryContext(ctx,
-		pgReplicationSlotQuery)
+		query)
 	if err != nil {
 		return err
 	}
@@ -84,10 +125,28 @@ func (PGReplicationSlotCollector) Update(ctx context.Context, instance *instance
 
 	for rows.Next() {
 		var slotName sql.NullString
+		var slotType sql.NullString
 		var walLSN sql.NullFloat64
 		var flushLSN sql.NullFloat64
 		var isActive sql.NullBool
-		if err := rows.Scan(&slotName, &walLSN, &flushLSN, &isActive); err != nil {
+		var safeWalSize sql.NullInt64
+		var walStatus sql.NullString
+
+		r := []any{
+			&slotName,
+			&slotType,
+			&walLSN,
+			&flushLSN,
+			&isActive,
+		}
+
+		if abovePG13 {
+			r = append(r, &safeWalSize)
+			r = append(r, &walStatus)
+		}
+
+		err := rows.Scan(r...)
+		if err != nil {
 			return err
 		}
 
@@ -99,6 +158,10 @@ func (PGReplicationSlotCollector) Update(ctx context.Context, instance *instance
 		if slotName.Valid {
 			slotNameLabel = slotName.String
 		}
+		slotTypeLabel := "unknown"
+		if slotType.Valid {
+			slotTypeLabel = slotType.String
+		}
 
 		var walLSNMetric float64
 		if walLSN.Valid {
@@ -106,7 +169,7 @@ func (PGReplicationSlotCollector) Update(ctx context.Context, instance *instance
 		}
 		ch <- prometheus.MustNewConstMetric(
 			pgReplicationSlotCurrentWalDesc,
-			prometheus.GaugeValue, walLSNMetric, slotNameLabel,
+			prometheus.GaugeValue, walLSNMetric, slotNameLabel, slotTypeLabel,
 		)
 		if isActive.Valid && isActive.Bool {
 			var flushLSNMetric float64
@@ -115,16 +178,27 @@ func (PGReplicationSlotCollector) Update(ctx context.Context, instance *instance
 			}
 			ch <- prometheus.MustNewConstMetric(
 				pgReplicationSlotCurrentFlushDesc,
-				prometheus.GaugeValue, flushLSNMetric, slotNameLabel,
+				prometheus.GaugeValue, flushLSNMetric, slotNameLabel, slotTypeLabel,
 			)
 		}
 		ch <- prometheus.MustNewConstMetric(
 			pgReplicationSlotIsActiveDesc,
-			prometheus.GaugeValue, isActiveValue, slotNameLabel,
+			prometheus.GaugeValue, isActiveValue, slotNameLabel, slotTypeLabel,
 		)
+
+		if safeWalSize.Valid {
+			ch <- prometheus.MustNewConstMetric(
+				pgReplicationSlotSafeWal,
+				prometheus.GaugeValue, float64(safeWalSize.Int64), slotNameLabel, slotTypeLabel,
+			)
+		}
+
+		if walStatus.Valid {
+			ch <- prometheus.MustNewConstMetric(
+				pgReplicationSlotWalStatus,
+				prometheus.GaugeValue, 1, slotNameLabel, slotTypeLabel, walStatus.String,
+			)
+		}
 	}
-	if err := rows.Err(); err != nil {
-		return err
-	}
-	return nil
+	return rows.Err()
 }

collector/pg_replication_slot_test.go

@@ -17,6 +17,7 @@ import (
 	"testing"
 
 	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/blang/semver/v4"
 	"github.com/prometheus/client_golang/prometheus"
 	dto "github.com/prometheus/client_model/go"
 	"github.com/smartystreets/goconvey/convey"
@@ -29,12 +30,12 @@ func TestPgReplicationSlotCollectorActive(t *testing.T) {
 	}
 	defer db.Close()
 
-	inst := &instance{db: db}
+	inst := &instance{db: db, version: semver.MustParse("13.3.7")}
 
-	columns := []string{"slot_name", "current_wal_lsn", "confirmed_flush_lsn", "active"}
+	columns := []string{"slot_name", "slot_type", "current_wal_lsn", "confirmed_flush_lsn", "active", "safe_wal_size", "wal_status"}
 	rows := sqlmock.NewRows(columns).
-		AddRow("test_slot", 5, 3, true)
-	mock.ExpectQuery(sanitizeQuery(pgReplicationSlotQuery)).WillReturnRows(rows)
+		AddRow("test_slot", "physical", 5, 3, true, 323906992, "reserved")
+	mock.ExpectQuery(sanitizeQuery(pgReplicationSlotNewQuery)).WillReturnRows(rows)
 
 	ch := make(chan prometheus.Metric)
 	go func() {
@@ -47,9 +48,11 @@ func TestPgReplicationSlotCollectorActive(t *testing.T) {
 	}()
 
 	expected := []MetricResult{
-		{labels: labelMap{"slot_name": "test_slot"}, value: 5, metricType: dto.MetricType_GAUGE},
-		{labels: labelMap{"slot_name": "test_slot"}, value: 3, metricType: dto.MetricType_GAUGE},
-		{labels: labelMap{"slot_name": "test_slot"}, value: 1, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical"}, value: 5, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical"}, value: 3, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical"}, value: 1, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical"}, value: 323906992, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical", "wal_status": "reserved"}, value: 1, metricType: dto.MetricType_GAUGE},
 	}
 
 	convey.Convey("Metrics comparison", t, func() {
@@ -70,12 +73,12 @@ func TestPgReplicationSlotCollectorInActive(t *testing.T) {
 	}
 	defer db.Close()
 
-	inst := &instance{db: db}
+	inst := &instance{db: db, version: semver.MustParse("13.3.7")}
 
-	columns := []string{"slot_name", "current_wal_lsn", "confirmed_flush_lsn", "active"}
+	columns := []string{"slot_name", "slot_type", "current_wal_lsn", "confirmed_flush_lsn", "active", "safe_wal_size", "wal_status"}
 	rows := sqlmock.NewRows(columns).
-		AddRow("test_slot", 6, 12, false)
-	mock.ExpectQuery(sanitizeQuery(pgReplicationSlotQuery)).WillReturnRows(rows)
+		AddRow("test_slot", "physical", 6, 12, false, -4000, "extended")
+	mock.ExpectQuery(sanitizeQuery(pgReplicationSlotNewQuery)).WillReturnRows(rows)
 
 	ch := make(chan prometheus.Metric)
 	go func() {
@@ -88,8 +91,10 @@ func TestPgReplicationSlotCollectorInActive(t *testing.T) {
 	}()
 
 	expected := []MetricResult{
-		{labels: labelMap{"slot_name": "test_slot"}, value: 6, metricType: dto.MetricType_GAUGE},
-		{labels: labelMap{"slot_name": "test_slot"}, value: 0, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical"}, value: 6, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical"}, value: 0, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical"}, value: -4000, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical", "wal_status": "extended"}, value: 1, metricType: dto.MetricType_GAUGE},
 	}
 
 	convey.Convey("Metrics comparison", t, func() {
@@ -111,12 +116,12 @@ func TestPgReplicationSlotCollectorActiveNil(t *testing.T) {
 	}
 	defer db.Close()
 
-	inst := &instance{db: db}
+	inst := &instance{db: db, version: semver.MustParse("13.3.7")}
 
-	columns := []string{"slot_name", "current_wal_lsn", "confirmed_flush_lsn", "active"}
+	columns := []string{"slot_name", "slot_type", "current_wal_lsn", "confirmed_flush_lsn", "active", "safe_wal_size", "wal_status"}
 	rows := sqlmock.NewRows(columns).
-		AddRow("test_slot", 6, 12, nil)
-	mock.ExpectQuery(sanitizeQuery(pgReplicationSlotQuery)).WillReturnRows(rows)
+		AddRow("test_slot", "physical", 6, 12, nil, nil, "lost")
+	mock.ExpectQuery(sanitizeQuery(pgReplicationSlotNewQuery)).WillReturnRows(rows)
 
 	ch := make(chan prometheus.Metric)
 	go func() {
@@ -129,8 +134,9 @@ func TestPgReplicationSlotCollectorActiveNil(t *testing.T) {
 	}()
 
 	expected := []MetricResult{
-		{labels: labelMap{"slot_name": "test_slot"}, value: 6, metricType: dto.MetricType_GAUGE},
-		{labels: labelMap{"slot_name": "test_slot"}, value: 0, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical"}, value: 6, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical"}, value: 0, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "test_slot", "slot_type": "physical", "wal_status": "lost"}, value: 1, metricType: dto.MetricType_GAUGE},
 	}
 
 	convey.Convey("Metrics comparison", t, func() {
@@ -151,12 +157,12 @@ func TestPgReplicationSlotCollectorTestNilValues(t *testing.T) {
 	}
 	defer db.Close()
 
-	inst := &instance{db: db}
+	inst := &instance{db: db, version: semver.MustParse("13.3.7")}
 
-	columns := []string{"slot_name", "current_wal_lsn", "confirmed_flush_lsn", "active"}
+	columns := []string{"slot_name", "slot_type", "current_wal_lsn", "confirmed_flush_lsn", "active", "safe_wal_size", "wal_status"}
 	rows := sqlmock.NewRows(columns).
-		AddRow(nil, nil, nil, true)
-	mock.ExpectQuery(sanitizeQuery(pgReplicationSlotQuery)).WillReturnRows(rows)
+		AddRow(nil, nil, nil, nil, true, nil, nil)
+	mock.ExpectQuery(sanitizeQuery(pgReplicationSlotNewQuery)).WillReturnRows(rows)
 
 	ch := make(chan prometheus.Metric)
 	go func() {
@@ -169,9 +175,9 @@ func TestPgReplicationSlotCollectorTestNilValues(t *testing.T) {
 	}()
 
 	expected := []MetricResult{
-		{labels: labelMap{"slot_name": "unknown"}, value: 0, metricType: dto.MetricType_GAUGE},
-		{labels: labelMap{"slot_name": "unknown"}, value: 0, metricType: dto.MetricType_GAUGE},
-		{labels: labelMap{"slot_name": "unknown"}, value: 1, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "unknown", "slot_type": "unknown"}, value: 0, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "unknown", "slot_type": "unknown"}, value: 0, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"slot_name": "unknown", "slot_type": "unknown"}, value: 1, metricType: dto.MetricType_GAUGE},
 	}
 
 	convey.Convey("Metrics comparison", t, func() {

collector/pg_replication_test.go

@@ -29,9 +29,11 @@ func TestPgReplicationCollector(t *testing.T) {
 	}
 	defer db.Close()
 
-	columns := []string{"lag", "is_replica"}
+	inst := &instance{db: db}
+
+	columns := []string{"lag", "is_replica", "last_replay"}
 	rows := sqlmock.NewRows(columns).
-		AddRow(1000, 1)
+		AddRow(1000, 1, 3)
 	mock.ExpectQuery(sanitizeQuery(pgReplicationQuery)).WillReturnRows(rows)
 
 	ch := make(chan prometheus.Metric)
@@ -39,7 +41,7 @@ func TestPgReplicationCollector(t *testing.T) {
 		defer close(ch)
 		c := PGReplicationCollector{}
 
-		if err := c.Update(context.Background(), db, ch); err != nil {
+		if err := c.Update(context.Background(), inst, ch); err != nil {
 			t.Errorf("Error calling PGReplicationCollector.Update: %s", err)
 		}
 	}()
@@ -47,6 +49,7 @@ func TestPgReplicationCollector(t *testing.T) {
 	expected := []MetricResult{
 		{labels: labelMap{}, value: 1000, metricType: dto.MetricType_GAUGE},
 		{labels: labelMap{}, value: 1, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{}, value: 3, metricType: dto.MetricType_GAUGE},
 	}
 
 	convey.Convey("Metrics comparison", t, func() {

collector/pg_roles.go

@@ -0,0 +1,91 @@
+// Copyright 2024 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"context"
+	"database/sql"
+	"log/slog"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const rolesSubsystem = "roles"
+
+func init() {
+	registerCollector(rolesSubsystem, defaultEnabled, NewPGRolesCollector)
+}
+
+type PGRolesCollector struct {
+	log *slog.Logger
+}
+
+func NewPGRolesCollector(config collectorConfig) (Collector, error) {
+	return &PGRolesCollector{
+		log: config.logger,
+	}, nil
+}
+
+var (
+	pgRolesConnectionLimitsDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(
+			namespace,
+			rolesSubsystem,
+			"connection_limit",
+		),
+		"Connection limit set for the role",
+		[]string{"rolname"}, nil,
+	)
+
+	pgRolesConnectionLimitsQuery = "SELECT pg_roles.rolname, pg_roles.rolconnlimit FROM pg_roles"
+)
+
+// Update implements Collector and exposes roles connection limits.
+// It is called by the Prometheus registry when collecting metrics.
+func (c PGRolesCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+	// Query the list of databases
+	rows, err := db.QueryContext(ctx,
+		pgRolesConnectionLimitsQuery,
+	)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var rolname sql.NullString
+		var connLimit sql.NullInt64
+		if err := rows.Scan(&rolname, &connLimit); err != nil {
+			return err
+		}
+
+		if !rolname.Valid {
+			continue
+		}
+		rolnameLabel := rolname.String
+
+		if !connLimit.Valid {
+			continue
+		}
+		connLimitMetric := float64(connLimit.Int64)
+
+		ch <- prometheus.MustNewConstMetric(
+			pgRolesConnectionLimitsDesc,
+			prometheus.GaugeValue, connLimitMetric, rolnameLabel,
+		)
+	}
+
+	return rows.Err()
+}

collector/pg_roles_test.go

@@ -0,0 +1,58 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestPGRolesCollector(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db}
+
+	mock.ExpectQuery(sanitizeQuery(pgRolesConnectionLimitsQuery)).WillReturnRows(sqlmock.NewRows([]string{"rolname", "rolconnlimit"}).
+		AddRow("postgres", 15))
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGRolesCollector{}
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGRolesCollector.Update: %s", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{"rolname": "postgres"}, value: 15, metricType: dto.MetricType_GAUGE},
+	}
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}

collector/pg_stat_activity_autovacuum.go

@@ -0,0 +1,84 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const statActivityAutovacuumSubsystem = "stat_activity_autovacuum"
+
+func init() {
+	registerCollector(statActivityAutovacuumSubsystem, defaultDisabled, NewPGStatActivityAutovacuumCollector)
+}
+
+type PGStatActivityAutovacuumCollector struct {
+	log *slog.Logger
+}
+
+func NewPGStatActivityAutovacuumCollector(config collectorConfig) (Collector, error) {
+	return &PGStatActivityAutovacuumCollector{log: config.logger}, nil
+}
+
+var (
+	statActivityAutovacuumAgeInSeconds = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statActivityAutovacuumSubsystem, "timestamp_seconds"),
+		"Start timestamp of the vacuum process in seconds",
+		[]string{"relname"},
+		prometheus.Labels{},
+	)
+
+	statActivityAutovacuumQuery = `
+    SELECT
+		SPLIT_PART(query, '.', 2) AS relname,
+		EXTRACT(EPOCH FROM xact_start) AS timestamp_seconds
+    FROM
+    	pg_catalog.pg_stat_activity
+    WHERE
+		query LIKE 'autovacuum:%'
+	`
+)
+
+func (PGStatActivityAutovacuumCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+	rows, err := db.QueryContext(ctx,
+		statActivityAutovacuumQuery)
+
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var relname string
+		var ageInSeconds float64
+
+		if err := rows.Scan(&relname, &ageInSeconds); err != nil {
+			return err
+		}
+
+		ch <- prometheus.MustNewConstMetric(
+			statActivityAutovacuumAgeInSeconds,
+			prometheus.GaugeValue,
+			ageInSeconds, relname,
+		)
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	return nil
+}

collector/pg_stat_activity_autovacuum_test.go

@@ -0,0 +1,62 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestPGStatActivityAutovacuumCollector(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+	inst := &instance{db: db}
+	columns := []string{
+		"relname",
+		"timestamp_seconds",
+	}
+	rows := sqlmock.NewRows(columns).
+		AddRow("test", 3600)
+
+	mock.ExpectQuery(sanitizeQuery(statActivityAutovacuumQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatActivityAutovacuumCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatActivityAutovacuumCollector.Update: %s", err)
+		}
+	}()
+	expected := []MetricResult{
+		{labels: labelMap{"relname": "test"}, value: 3600, metricType: dto.MetricType_GAUGE},
+	}
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}

collector/pg_stat_bgwriter.go

@@ -17,6 +17,7 @@ import (
 	"context"
 	"database/sql"
 
+	"github.com/blang/semver/v4"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -101,7 +102,7 @@ var (
 		prometheus.Labels{},
 	)
 
-	statBGWriterQuery = `SELECT
+	statBGWriterQueryBefore17 = `SELECT
 		checkpoints_timed
 		,checkpoints_req
 		,checkpoint_write_time
@@ -114,121 +115,177 @@ var (
 		,buffers_alloc
 		,stats_reset
 	FROM pg_stat_bgwriter;`
+
+	statBGWriterQueryAfter17 = `SELECT
+		buffers_clean
+		,maxwritten_clean
+		,buffers_alloc
+		,stats_reset
+	FROM pg_stat_bgwriter;`
 )
 
 func (PGStatBGWriterCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
-	db := instance.getDB()
-	row := db.QueryRowContext(ctx,
-		statBGWriterQuery)
+	if instance.version.GE(semver.MustParse("17.0.0")) {
+		db := instance.getDB()
+		row := db.QueryRowContext(ctx, statBGWriterQueryAfter17)
 
-	var cpt, cpr, bcp, bc, mwc, bb, bbf, ba sql.NullInt64
-	var cpwt, cpst sql.NullFloat64
-	var sr sql.NullTime
+		var bc, mwc, ba sql.NullInt64
+		var sr sql.NullTime
 
-	err := row.Scan(&cpt, &cpr, &cpwt, &cpst, &bcp, &bc, &mwc, &bb, &bbf, &ba, &sr)
-	if err != nil {
-		return err
-	}
+		err := row.Scan(&bc, &mwc, &ba, &sr)
+		if err != nil {
+			return err
+		}
 
-	cptMetric := 0.0
-	if cpt.Valid {
-		cptMetric = float64(cpt.Int64)
+		bcMetric := 0.0
+		if bc.Valid {
+			bcMetric = float64(bc.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterBuffersCleanDesc,
+			prometheus.CounterValue,
+			bcMetric,
+		)
+		mwcMetric := 0.0
+		if mwc.Valid {
+			mwcMetric = float64(mwc.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterMaxwrittenCleanDesc,
+			prometheus.CounterValue,
+			mwcMetric,
+		)
+		baMetric := 0.0
+		if ba.Valid {
+			baMetric = float64(ba.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterBuffersAllocDesc,
+			prometheus.CounterValue,
+			baMetric,
+		)
+		srMetric := 0.0
+		if sr.Valid {
+			srMetric = float64(sr.Time.Unix())
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterStatsResetDesc,
+			prometheus.CounterValue,
+			srMetric,
+		)
+	} else {
+		db := instance.getDB()
+		row := db.QueryRowContext(ctx, statBGWriterQueryBefore17)
+
+		var cpt, cpr, bcp, bc, mwc, bb, bbf, ba sql.NullInt64
+		var cpwt, cpst sql.NullFloat64
+		var sr sql.NullTime
+
+		err := row.Scan(&cpt, &cpr, &cpwt, &cpst, &bcp, &bc, &mwc, &bb, &bbf, &ba, &sr)
+		if err != nil {
+			return err
+		}
+
+		cptMetric := 0.0
+		if cpt.Valid {
+			cptMetric = float64(cpt.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterCheckpointsTimedDesc,
+			prometheus.CounterValue,
+			cptMetric,
+		)
+		cprMetric := 0.0
+		if cpr.Valid {
+			cprMetric = float64(cpr.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterCheckpointsReqDesc,
+			prometheus.CounterValue,
+			cprMetric,
+		)
+		cpwtMetric := 0.0
+		if cpwt.Valid {
+			cpwtMetric = float64(cpwt.Float64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterCheckpointsReqTimeDesc,
+			prometheus.CounterValue,
+			cpwtMetric,
+		)
+		cpstMetric := 0.0
+		if cpst.Valid {
+			cpstMetric = float64(cpst.Float64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterCheckpointsSyncTimeDesc,
+			prometheus.CounterValue,
+			cpstMetric,
+		)
+		bcpMetric := 0.0
+		if bcp.Valid {
+			bcpMetric = float64(bcp.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterBuffersCheckpointDesc,
+			prometheus.CounterValue,
+			bcpMetric,
+		)
+		bcMetric := 0.0
+		if bc.Valid {
+			bcMetric = float64(bc.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterBuffersCleanDesc,
+			prometheus.CounterValue,
+			bcMetric,
+		)
+		mwcMetric := 0.0
+		if mwc.Valid {
+			mwcMetric = float64(mwc.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterMaxwrittenCleanDesc,
+			prometheus.CounterValue,
+			mwcMetric,
+		)
+		bbMetric := 0.0
+		if bb.Valid {
+			bbMetric = float64(bb.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterBuffersBackendDesc,
+			prometheus.CounterValue,
+			bbMetric,
+		)
+		bbfMetric := 0.0
+		if bbf.Valid {
+			bbfMetric = float64(bbf.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterBuffersBackendFsyncDesc,
+			prometheus.CounterValue,
+			bbfMetric,
+		)
+		baMetric := 0.0
+		if ba.Valid {
+			baMetric = float64(ba.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterBuffersAllocDesc,
+			prometheus.CounterValue,
+			baMetric,
+		)
+		srMetric := 0.0
+		if sr.Valid {
+			srMetric = float64(sr.Time.Unix())
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statBGWriterStatsResetDesc,
+			prometheus.CounterValue,
+			srMetric,
+		)
 	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterCheckpointsTimedDesc,
-		prometheus.CounterValue,
-		cptMetric,
-	)
-	cprMetric := 0.0
-	if cpr.Valid {
-		cprMetric = float64(cpr.Int64)
-	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterCheckpointsReqDesc,
-		prometheus.CounterValue,
-		cprMetric,
-	)
-	cpwtMetric := 0.0
-	if cpwt.Valid {
-		cpwtMetric = float64(cpwt.Float64)
-	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterCheckpointsReqTimeDesc,
-		prometheus.CounterValue,
-		cpwtMetric,
-	)
-	cpstMetric := 0.0
-	if cpst.Valid {
-		cpstMetric = float64(cpst.Float64)
-	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterCheckpointsSyncTimeDesc,
-		prometheus.CounterValue,
-		cpstMetric,
-	)
-	bcpMetric := 0.0
-	if bcp.Valid {
-		bcpMetric = float64(bcp.Int64)
-	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterBuffersCheckpointDesc,
-		prometheus.CounterValue,
-		bcpMetric,
-	)
-	bcMetric := 0.0
-	if bc.Valid {
-		bcMetric = float64(bc.Int64)
-	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterBuffersCleanDesc,
-		prometheus.CounterValue,
-		bcMetric,
-	)
-	mwcMetric := 0.0
-	if mwc.Valid {
-		mwcMetric = float64(mwc.Int64)
-	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterMaxwrittenCleanDesc,
-		prometheus.CounterValue,
-		mwcMetric,
-	)
-	bbMetric := 0.0
-	if bb.Valid {
-		bbMetric = float64(bb.Int64)
-	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterBuffersBackendDesc,
-		prometheus.CounterValue,
-		bbMetric,
-	)
-	bbfMetric := 0.0
-	if bbf.Valid {
-		bbfMetric = float64(bbf.Int64)
-	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterBuffersBackendFsyncDesc,
-		prometheus.CounterValue,
-		bbfMetric,
-	)
-	baMetric := 0.0
-	if ba.Valid {
-		baMetric = float64(ba.Int64)
-	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterBuffersAllocDesc,
-		prometheus.CounterValue,
-		baMetric,
-	)
-	srMetric := 0.0
-	if sr.Valid {
-		srMetric = float64(sr.Time.Unix())
-	}
-	ch <- prometheus.MustNewConstMetric(
-		statBGWriterStatsResetDesc,
-		prometheus.CounterValue,
-		srMetric,
-	)
 
 	return nil
 }

collector/pg_stat_bgwriter_test.go

@@ -51,8 +51,8 @@ func TestPGStatBGWriterCollector(t *testing.T) {
 	}
 
 	rows := sqlmock.NewRows(columns).
-		AddRow(354, 4945, 289097744, 1242257, 3275602074, 89320867, 450139, 2034563757, 0, 2725688749, srT)
-	mock.ExpectQuery(sanitizeQuery(statBGWriterQuery)).WillReturnRows(rows)
+		AddRow(354, 4945, 289097744, 1242257, int64(3275602074), 89320867, 450139, 2034563757, 0, int64(2725688749), srT)
+	mock.ExpectQuery(sanitizeQuery(statBGWriterQueryBefore17)).WillReturnRows(rows)
 
 	ch := make(chan prometheus.Metric)
 	go func() {
@@ -113,7 +113,7 @@ func TestPGStatBGWriterCollectorNullValues(t *testing.T) {
 
 	rows := sqlmock.NewRows(columns).
 		AddRow(nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil)
-	mock.ExpectQuery(sanitizeQuery(statBGWriterQuery)).WillReturnRows(rows)
+	mock.ExpectQuery(sanitizeQuery(statBGWriterQueryBefore17)).WillReturnRows(rows)
 
 	ch := make(chan prometheus.Metric)
 	go func() {

collector/pg_stat_checkpointer.go

@@ -0,0 +1,231 @@
+// Copyright 2024 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"context"
+	"database/sql"
+	"log/slog"
+
+	"github.com/blang/semver/v4"
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const statCheckpointerSubsystem = "stat_checkpointer"
+
+func init() {
+	// WARNING:
+	//   Disabled by default because this set of metrics is only available from Postgres 17
+	registerCollector(statCheckpointerSubsystem, defaultDisabled, NewPGStatCheckpointerCollector)
+}
+
+type PGStatCheckpointerCollector struct {
+	log *slog.Logger
+}
+
+func NewPGStatCheckpointerCollector(config collectorConfig) (Collector, error) {
+	return &PGStatCheckpointerCollector{log: config.logger}, nil
+}
+
+var (
+	statCheckpointerNumTimedDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statCheckpointerSubsystem, "num_timed_total"),
+		"Number of scheduled checkpoints due to timeout",
+		[]string{},
+		prometheus.Labels{},
+	)
+	statCheckpointerNumRequestedDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statCheckpointerSubsystem, "num_requested_total"),
+		"Number of requested checkpoints that have been performed",
+		[]string{},
+		prometheus.Labels{},
+	)
+	statCheckpointerRestartpointsTimedDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statCheckpointerSubsystem, "restartpoints_timed_total"),
+		"Number of scheduled restartpoints due to timeout or after a failed attempt to perform it",
+		[]string{},
+		prometheus.Labels{},
+	)
+	statCheckpointerRestartpointsReqDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statCheckpointerSubsystem, "restartpoints_req_total"),
+		"Number of requested restartpoints",
+		[]string{},
+		prometheus.Labels{},
+	)
+	statCheckpointerRestartpointsDoneDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statCheckpointerSubsystem, "restartpoints_done_total"),
+		"Number of restartpoints that have been performed",
+		[]string{},
+		prometheus.Labels{},
+	)
+	statCheckpointerWriteTimeDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statCheckpointerSubsystem, "write_time_total"),
+		"Total amount of time that has been spent in the portion of processing checkpoints and restartpoints where files are written to disk, in milliseconds",
+		[]string{},
+		prometheus.Labels{},
+	)
+	statCheckpointerSyncTimeDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statCheckpointerSubsystem, "sync_time_total"),
+		"Total amount of time that has been spent in the portion of processing checkpoints and restartpoints where files are synchronized to disk, in milliseconds",
+		[]string{},
+		prometheus.Labels{},
+	)
+	statCheckpointerBuffersWrittenDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statCheckpointerSubsystem, "buffers_written_total"),
+		"Number of buffers written during checkpoints and restartpoints",
+		[]string{},
+		prometheus.Labels{},
+	)
+	statCheckpointerStatsResetDesc = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statCheckpointerSubsystem, "stats_reset_total"),
+		"Time at which these statistics were last reset",
+		[]string{},
+		prometheus.Labels{},
+	)
+
+	statCheckpointerQuery = `SELECT
+		num_timed
+		,num_requested
+		,restartpoints_timed
+		,restartpoints_req
+		,restartpoints_done
+		,write_time
+		,sync_time
+		,buffers_written
+		,stats_reset
+	FROM pg_stat_checkpointer;`
+)
+
+func (c PGStatCheckpointerCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+
+	before17 := instance.version.LT(semver.MustParse("17.0.0"))
+	if before17 {
+		c.log.Warn("pg_stat_checkpointer collector is not available on PostgreSQL < 17.0.0, skipping")
+		return nil
+	}
+
+	row := db.QueryRowContext(ctx, statCheckpointerQuery)
+
+	// num_timed           = nt  = bigint
+	// num_requested       = nr  = bigint
+	// restartpoints_timed = rpt = bigint
+	// restartpoints_req   = rpr = bigint
+	// restartpoints_done  = rpd = bigint
+	// write_time          = wt  = double precision
+	// sync_time           = st  = double precision
+	// buffers_written     = bw  = bigint
+	// stats_reset         = sr  = timestamp
+
+	var nt, nr, rpt, rpr, rpd, bw sql.NullInt64
+	var wt, st sql.NullFloat64
+	var sr sql.NullTime
+
+	err := row.Scan(&nt, &nr, &rpt, &rpr, &rpd, &wt, &st, &bw, &sr)
+	if err != nil {
+		return err
+	}
+
+	ntMetric := 0.0
+	if nt.Valid {
+		ntMetric = float64(nt.Int64)
+	}
+	ch <- prometheus.MustNewConstMetric(
+		statCheckpointerNumTimedDesc,
+		prometheus.CounterValue,
+		ntMetric,
+	)
+
+	nrMetric := 0.0
+	if nr.Valid {
+		nrMetric = float64(nr.Int64)
+	}
+	ch <- prometheus.MustNewConstMetric(
+		statCheckpointerNumRequestedDesc,
+		prometheus.CounterValue,
+		nrMetric,
+	)
+
+	rptMetric := 0.0
+	if rpt.Valid {
+		rptMetric = float64(rpt.Int64)
+	}
+	ch <- prometheus.MustNewConstMetric(
+		statCheckpointerRestartpointsTimedDesc,
+		prometheus.CounterValue,
+		rptMetric,
+	)
+
+	rprMetric := 0.0
+	if rpr.Valid {
+		rprMetric = float64(rpr.Int64)
+	}
+	ch <- prometheus.MustNewConstMetric(
+		statCheckpointerRestartpointsReqDesc,
+		prometheus.CounterValue,
+		rprMetric,
+	)
+
+	rpdMetric := 0.0
+	if rpd.Valid {
+		rpdMetric = float64(rpd.Int64)
+	}
+	ch <- prometheus.MustNewConstMetric(
+		statCheckpointerRestartpointsDoneDesc,
+		prometheus.CounterValue,
+		rpdMetric,
+	)
+
+	wtMetric := 0.0
+	if wt.Valid {
+		wtMetric = float64(wt.Float64)
+	}
+	ch <- prometheus.MustNewConstMetric(
+		statCheckpointerWriteTimeDesc,
+		prometheus.CounterValue,
+		wtMetric,
+	)
+
+	stMetric := 0.0
+	if st.Valid {
+		stMetric = float64(st.Float64)
+	}
+	ch <- prometheus.MustNewConstMetric(
+		statCheckpointerSyncTimeDesc,
+		prometheus.CounterValue,
+		stMetric,
+	)
+
+	bwMetric := 0.0
+	if bw.Valid {
+		bwMetric = float64(bw.Int64)
+	}
+	ch <- prometheus.MustNewConstMetric(
+		statCheckpointerBuffersWrittenDesc,
+		prometheus.CounterValue,
+		bwMetric,
+	)
+
+	srMetric := 0.0
+	if sr.Valid {
+		srMetric = float64(sr.Time.Unix())
+	}
+	ch <- prometheus.MustNewConstMetric(
+		statCheckpointerStatsResetDesc,
+		prometheus.CounterValue,
+		srMetric,
+	)
+
+	return nil
+}

collector/pg_stat_checkpointer_test.go

@@ -0,0 +1,144 @@
+// Copyright 2024 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/blang/semver/v4"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestPGStatCheckpointerCollector(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db, version: semver.MustParse("17.0.0")}
+
+	columns := []string{
+		"num_timed",
+		"num_requested",
+		"restartpoints_timed",
+		"restartpoints_req",
+		"restartpoints_done",
+		"write_time",
+		"sync_time",
+		"buffers_written",
+		"stats_reset"}
+
+	srT, err := time.Parse("2006-01-02 15:04:05.00000-07", "2023-05-25 17:10:42.81132-07")
+	if err != nil {
+		t.Fatalf("Error parsing time: %s", err)
+	}
+
+	rows := sqlmock.NewRows(columns).
+		AddRow(354, 4945, 289097744, 1242257, int64(3275602074), 89320867, 450139, 2034563757, srT)
+	mock.ExpectQuery(sanitizeQuery(statCheckpointerQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatCheckpointerCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatCheckpointerCollector.Update: %s", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 354},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 4945},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 289097744},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 1242257},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 3275602074},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 89320867},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 450139},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 2034563757},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 1685059842},
+	}
+
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}
+
+func TestPGStatCheckpointerCollectorNullValues(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db, version: semver.MustParse("17.0.0")}
+
+	columns := []string{
+		"num_timed",
+		"num_requested",
+		"restartpoints_timed",
+		"restartpoints_req",
+		"restartpoints_done",
+		"write_time",
+		"sync_time",
+		"buffers_written",
+		"stats_reset"}
+
+	rows := sqlmock.NewRows(columns).
+		AddRow(nil, nil, nil, nil, nil, nil, nil, nil, nil)
+	mock.ExpectQuery(sanitizeQuery(statCheckpointerQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatCheckpointerCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatCheckpointerCollector.Update: %s", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{}, metricType: dto.MetricType_COUNTER, value: 0},
+	}
+
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}

collector/pg_stat_database.go

@@ -16,7 +16,11 @@ package collector
 import (
 	"context"
 	"database/sql"
+	"fmt"
+	"log/slog"
+	"strings"
 
+	"github.com/blang/semver/v4"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -26,10 +30,12 @@ func init() {
 	registerCollector(statDatabaseSubsystem, defaultEnabled, NewPGStatDatabaseCollector)
 }
 
-type PGStatDatabaseCollector struct{}
+type PGStatDatabaseCollector struct {
+	log *slog.Logger
+}
 
 func NewPGStatDatabaseCollector(config collectorConfig) (Collector, error) {
-	return &PGStatDatabaseCollector{}, nil
+	return &PGStatDatabaseCollector{log: config.logger}, nil
 }
 
 var (
@@ -202,36 +208,53 @@ var (
 		[]string{"datid", "datname"},
 		prometheus.Labels{},
 	)
-
-	statDatabaseQuery = `
-		SELECT
-			datid
-			,datname
-			,numbackends
-			,xact_commit
-			,xact_rollback
-			,blks_read
-			,blks_hit
-			,tup_returned
-			,tup_fetched
-			,tup_inserted
-			,tup_updated
-			,tup_deleted
-			,conflicts
-			,temp_files
-			,temp_bytes
-			,deadlocks
-			,blk_read_time
-			,blk_write_time
-			,stats_reset
-		FROM pg_stat_database;
-	`
+	statDatabaseActiveTime = prometheus.NewDesc(prometheus.BuildFQName(
+		namespace,
+		statDatabaseSubsystem,
+		"active_time_seconds_total",
+	),
+		"Time spent executing SQL statements in this database, in seconds",
+		[]string{"datid", "datname"},
+		prometheus.Labels{},
+	)
 )
 
-func (PGStatDatabaseCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+func statDatabaseQuery(columns []string) string {
+	return fmt.Sprintf("SELECT %s FROM pg_stat_database;", strings.Join(columns, ","))
+}
+
+func (c *PGStatDatabaseCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
 	db := instance.getDB()
+
+	columns := []string{
+		"datid",
+		"datname",
+		"numbackends",
+		"xact_commit",
+		"xact_rollback",
+		"blks_read",
+		"blks_hit",
+		"tup_returned",
+		"tup_fetched",
+		"tup_inserted",
+		"tup_updated",
+		"tup_deleted",
+		"conflicts",
+		"temp_files",
+		"temp_bytes",
+		"deadlocks",
+		"blk_read_time",
+		"blk_write_time",
+		"stats_reset",
+	}
+
+	activeTimeAvail := instance.version.GTE(semver.MustParse("14.0.0"))
+	if activeTimeAvail {
+		columns = append(columns, "active_time")
+	}
+
 	rows, err := db.QueryContext(ctx,
-		statDatabaseQuery,
+		statDatabaseQuery(columns),
 	)
 	if err != nil {
 		return err
@@ -240,10 +263,10 @@ func (PGStatDatabaseCollector) Update(ctx context.Context, instance *instance, c
 
 	for rows.Next() {
 		var datid, datname sql.NullString
-		var numBackends, xactCommit, xactRollback, blksRead, blksHit, tupReturned, tupFetched, tupInserted, tupUpdated, tupDeleted, conflicts, tempFiles, tempBytes, deadlocks, blkReadTime, blkWriteTime sql.NullFloat64
+		var numBackends, xactCommit, xactRollback, blksRead, blksHit, tupReturned, tupFetched, tupInserted, tupUpdated, tupDeleted, conflicts, tempFiles, tempBytes, deadlocks, blkReadTime, blkWriteTime, activeTime sql.NullFloat64
 		var statsReset sql.NullTime
 
-		err := rows.Scan(
+		r := []any{
 			&datid,
 			&datname,
 			&numBackends,
@@ -263,222 +286,231 @@ func (PGStatDatabaseCollector) Update(ctx context.Context, instance *instance, c
 			&blkReadTime,
 			&blkWriteTime,
 			&statsReset,
-		)
+		}
+
+		if activeTimeAvail {
+			r = append(r, &activeTime)
+		}
+
+		err := rows.Scan(r...)
 		if err != nil {
 			return err
 		}
-		datidLabel := "unknown"
-		if datid.Valid {
-			datidLabel = datid.String
-		}
-		datnameLabel := "unknown"
-		if datname.Valid {
-			datnameLabel = datname.String
-		}
 
-		numBackendsMetric := 0.0
-		if numBackends.Valid {
-			numBackendsMetric = numBackends.Float64
+		if !datid.Valid {
+			c.log.Debug("Skipping collecting metric because it has no datid")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseNumbackends,
-			prometheus.GaugeValue,
-			numBackendsMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		xactCommitMetric := 0.0
-		if xactCommit.Valid {
-			xactCommitMetric = xactCommit.Float64
+		if !datname.Valid {
+			c.log.Debug("Skipping collecting metric because it has no datname")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseXactCommit,
-			prometheus.CounterValue,
-			xactCommitMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		xactRollbackMetric := 0.0
-		if xactRollback.Valid {
-			xactRollbackMetric = xactRollback.Float64
+		if !numBackends.Valid {
+			c.log.Debug("Skipping collecting metric because it has no numbackends")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseXactRollback,
-			prometheus.CounterValue,
-			xactRollbackMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		blksReadMetric := 0.0
-		if blksRead.Valid {
-			blksReadMetric = blksRead.Float64
+		if !xactCommit.Valid {
+			c.log.Debug("Skipping collecting metric because it has no xact_commit")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseBlksRead,
-			prometheus.CounterValue,
-			blksReadMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		blksHitMetric := 0.0
-		if blksHit.Valid {
-			blksHitMetric = blksHit.Float64
+		if !xactRollback.Valid {
+			c.log.Debug("Skipping collecting metric because it has no xact_rollback")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseBlksHit,
-			prometheus.CounterValue,
-			blksHitMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		tupReturnedMetric := 0.0
-		if tupReturned.Valid {
-			tupReturnedMetric = tupReturned.Float64
+		if !blksRead.Valid {
+			c.log.Debug("Skipping collecting metric because it has no blks_read")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseTupReturned,
-			prometheus.CounterValue,
-			tupReturnedMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		tupFetchedMetric := 0.0
-		if tupFetched.Valid {
-			tupFetchedMetric = tupFetched.Float64
+		if !blksHit.Valid {
+			c.log.Debug("Skipping collecting metric because it has no blks_hit")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseTupFetched,
-			prometheus.CounterValue,
-			tupFetchedMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		tupInsertedMetric := 0.0
-		if tupInserted.Valid {
-			tupInsertedMetric = tupInserted.Float64
+		if !tupReturned.Valid {
+			c.log.Debug("Skipping collecting metric because it has no tup_returned")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseTupInserted,
-			prometheus.CounterValue,
-			tupInsertedMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		tupUpdatedMetric := 0.0
-		if tupUpdated.Valid {
-			tupUpdatedMetric = tupUpdated.Float64
+		if !tupFetched.Valid {
+			c.log.Debug("Skipping collecting metric because it has no tup_fetched")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseTupUpdated,
-			prometheus.CounterValue,
-			tupUpdatedMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		tupDeletedMetric := 0.0
-		if tupDeleted.Valid {
-			tupDeletedMetric = tupDeleted.Float64
+		if !tupInserted.Valid {
+			c.log.Debug("Skipping collecting metric because it has no tup_inserted")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseTupDeleted,
-			prometheus.CounterValue,
-			tupDeletedMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		conflictsMetric := 0.0
-		if conflicts.Valid {
-			conflictsMetric = conflicts.Float64
+		if !tupUpdated.Valid {
+			c.log.Debug("Skipping collecting metric because it has no tup_updated")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseConflicts,
-			prometheus.CounterValue,
-			conflictsMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		tempFilesMetric := 0.0
-		if tempFiles.Valid {
-			tempFilesMetric = tempFiles.Float64
+		if !tupDeleted.Valid {
+			c.log.Debug("Skipping collecting metric because it has no tup_deleted")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseTempFiles,
-			prometheus.CounterValue,
-			tempFilesMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		tempBytesMetric := 0.0
-		if tempBytes.Valid {
-			tempBytesMetric = tempBytes.Float64
+		if !conflicts.Valid {
+			c.log.Debug("Skipping collecting metric because it has no conflicts")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseTempBytes,
-			prometheus.CounterValue,
-			tempBytesMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		deadlocksMetric := 0.0
-		if deadlocks.Valid {
-			deadlocksMetric = deadlocks.Float64
+		if !tempFiles.Valid {
+			c.log.Debug("Skipping collecting metric because it has no temp_files")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseDeadlocks,
-			prometheus.CounterValue,
-			deadlocksMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		blkReadTimeMetric := 0.0
-		if blkReadTime.Valid {
-			blkReadTimeMetric = blkReadTime.Float64
+		if !tempBytes.Valid {
+			c.log.Debug("Skipping collecting metric because it has no temp_bytes")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseBlkReadTime,
-			prometheus.CounterValue,
-			blkReadTimeMetric,
-			datidLabel,
-			datnameLabel,
-		)
-
-		blkWriteTimeMetric := 0.0
-		if blkWriteTime.Valid {
-			blkWriteTimeMetric = blkWriteTime.Float64
+		if !deadlocks.Valid {
+			c.log.Debug("Skipping collecting metric because it has no deadlocks")
+			continue
+		}
+		if !blkReadTime.Valid {
+			c.log.Debug("Skipping collecting metric because it has no blk_read_time")
+			continue
+		}
+		if !blkWriteTime.Valid {
+			c.log.Debug("Skipping collecting metric because it has no blk_write_time")
+			continue
+		}
+		if activeTimeAvail && !activeTime.Valid {
+			c.log.Debug("Skipping collecting metric because it has no active_time")
+			continue
 		}
-		ch <- prometheus.MustNewConstMetric(
-			statDatabaseBlkWriteTime,
-			prometheus.CounterValue,
-			blkWriteTimeMetric,
-			datidLabel,
-			datnameLabel,
-		)
 
 		statsResetMetric := 0.0
+		if !statsReset.Valid {
+			c.log.Debug("No metric for stats_reset, will collect 0 instead")
+		}
 		if statsReset.Valid {
 			statsResetMetric = float64(statsReset.Time.Unix())
 		}
+
+		labels := []string{datid.String, datname.String}
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseNumbackends,
+			prometheus.GaugeValue,
+			numBackends.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseXactCommit,
+			prometheus.CounterValue,
+			xactCommit.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseXactRollback,
+			prometheus.CounterValue,
+			xactRollback.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseBlksRead,
+			prometheus.CounterValue,
+			blksRead.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseBlksHit,
+			prometheus.CounterValue,
+			blksHit.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseTupReturned,
+			prometheus.CounterValue,
+			tupReturned.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseTupFetched,
+			prometheus.CounterValue,
+			tupFetched.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseTupInserted,
+			prometheus.CounterValue,
+			tupInserted.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseTupUpdated,
+			prometheus.CounterValue,
+			tupUpdated.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseTupDeleted,
+			prometheus.CounterValue,
+			tupDeleted.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseConflicts,
+			prometheus.CounterValue,
+			conflicts.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseTempFiles,
+			prometheus.CounterValue,
+			tempFiles.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseTempBytes,
+			prometheus.CounterValue,
+			tempBytes.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseDeadlocks,
+			prometheus.CounterValue,
+			deadlocks.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseBlkReadTime,
+			prometheus.CounterValue,
+			blkReadTime.Float64,
+			labels...,
+		)
+
+		ch <- prometheus.MustNewConstMetric(
+			statDatabaseBlkWriteTime,
+			prometheus.CounterValue,
+			blkWriteTime.Float64,
+			labels...,
+		)
+
 		ch <- prometheus.MustNewConstMetric(
 			statDatabaseStatsReset,
 			prometheus.CounterValue,
 			statsResetMetric,
-			datidLabel,
-			datnameLabel,
+			labels...,
 		)
+
+		if activeTimeAvail {
+			ch <- prometheus.MustNewConstMetric(
+				statDatabaseActiveTime,
+				prometheus.CounterValue,
+				activeTime.Float64/1000.0,
+				labels...,
+			)
+		}
 	}
 	return nil
 }

collector/pg_stat_database_test.go

@@ -18,8 +18,10 @@ import (
 	"time"
 
 	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/blang/semver/v4"
 	"github.com/prometheus/client_golang/prometheus"
 	dto "github.com/prometheus/client_model/go"
+	"github.com/prometheus/common/promslog"
 	"github.com/smartystreets/goconvey/convey"
 )
 
@@ -30,7 +32,7 @@ func TestPGStatDatabaseCollector(t *testing.T) {
 	}
 	defer db.Close()
 
-	inst := &instance{db: db}
+	inst := &instance{db: db, version: semver.MustParse("14.0.0")}
 
 	columns := []string{
 		"datid",
@@ -52,6 +54,7 @@ func TestPGStatDatabaseCollector(t *testing.T) {
 		"blk_read_time",
 		"blk_write_time",
 		"stats_reset",
+		"active_time",
 	}
 
 	srT, err := time.Parse("2006-01-02 15:04:05.00000-07", "2023-05-25 17:10:42.81132-07")
@@ -67,26 +70,30 @@ func TestPGStatDatabaseCollector(t *testing.T) {
 			4945,
 			289097744,
 			1242257,
-			3275602074,
+			int64(3275602074),
 			89320867,
 			450139,
 			2034563757,
 			0,
-			2725688749,
+			int64(2725688749),
 			23,
 			52,
 			74,
 			925,
 			16,
 			823,
-			srT)
+			srT,
+			33,
+		)
 
-	mock.ExpectQuery(sanitizeQuery(statDatabaseQuery)).WillReturnRows(rows)
+	mock.ExpectQuery(sanitizeQuery(statDatabaseQuery(columns))).WillReturnRows(rows)
 
 	ch := make(chan prometheus.Metric)
 	go func() {
 		defer close(ch)
-		c := PGStatDatabaseCollector{}
+		c := PGStatDatabaseCollector{
+			log: promslog.NewNopLogger().With("collector", "pg_stat_database"),
+		}
 
 		if err := c.Update(context.Background(), inst, ch); err != nil {
 			t.Errorf("Error calling PGStatDatabaseCollector.Update: %s", err)
@@ -111,6 +118,7 @@ func TestPGStatDatabaseCollector(t *testing.T) {
 		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 16},
 		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 823},
 		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 1685059842},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 0.033},
 	}
 
 	convey.Convey("Metrics comparison", t, func() {
@@ -131,7 +139,11 @@ func TestPGStatDatabaseCollectorNullValues(t *testing.T) {
 	}
 	defer db.Close()
 
-	inst := &instance{db: db}
+	srT, err := time.Parse("2006-01-02 15:04:05.00000-07", "2023-05-25 17:10:42.81132-07")
+	if err != nil {
+		t.Fatalf("Error parsing time: %s", err)
+	}
+	inst := &instance{db: db, version: semver.MustParse("14.0.0")}
 
 	columns := []string{
 		"datid",
@@ -153,109 +165,32 @@ func TestPGStatDatabaseCollectorNullValues(t *testing.T) {
 		"blk_read_time",
 		"blk_write_time",
 		"stats_reset",
+		"active_time",
 	}
 
 	rows := sqlmock.NewRows(columns).
 		AddRow(
 			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-		)
-	mock.ExpectQuery(sanitizeQuery(statDatabaseQuery)).WillReturnRows(rows)
-
-	ch := make(chan prometheus.Metric)
-	go func() {
-		defer close(ch)
-		c := PGStatDatabaseCollector{}
-
-		if err := c.Update(context.Background(), inst, ch); err != nil {
-			t.Errorf("Error calling PGStatDatabaseCollector.Update: %s", err)
-		}
-	}()
-
-	expected := []MetricResult{
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_GAUGE, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-	}
-
-	convey.Convey("Metrics comparison", t, func() {
-		for _, expect := range expected {
-			m := readMetric(<-ch)
-			convey.So(expect, convey.ShouldResemble, m)
-		}
-	})
-	if err := mock.ExpectationsWereMet(); err != nil {
-		t.Errorf("there were unfulfilled exceptions: %s", err)
-	}
-}
-func TestPGStatDatabaseCollectorRowLeakTest(t *testing.T) {
-	db, mock, err := sqlmock.New()
-	if err != nil {
-		t.Fatalf("Error opening a stub db connection: %s", err)
-	}
-	defer db.Close()
-
-	inst := &instance{db: db}
-
-	columns := []string{
-		"datid",
-		"datname",
-		"numbackends",
-		"xact_commit",
-		"xact_rollback",
-		"blks_read",
-		"blks_hit",
-		"tup_returned",
-		"tup_fetched",
-		"tup_inserted",
-		"tup_updated",
-		"tup_deleted",
-		"conflicts",
-		"temp_files",
-		"temp_bytes",
-		"deadlocks",
-		"blk_read_time",
-		"blk_write_time",
-		"stats_reset",
-	}
-
-	srT, err := time.Parse("2006-01-02 15:04:05.00000-07", "2023-05-25 17:10:42.81132-07")
-	if err != nil {
-		t.Fatalf("Error parsing time: %s", err)
-	}
-
-	rows := sqlmock.NewRows(columns).
+			"postgres",
+			354,
+			4945,
+			289097744,
+			1242257,
+			int64(3275602074),
+			89320867,
+			450139,
+			2034563757,
+			0,
+			int64(2725688749),
+			23,
+			52,
+			74,
+			925,
+			16,
+			823,
+			srT,
+			32,
+		).
 		AddRow(
 			"pid",
 			"postgres",
@@ -263,47 +198,29 @@ func TestPGStatDatabaseCollectorRowLeakTest(t *testing.T) {
 			4945,
 			289097744,
 			1242257,
-			3275602074,
+			int64(3275602074),
 			89320867,
 			450139,
 			2034563757,
 			0,
-			2725688749,
+			int64(2725688749),
 			23,
 			52,
 			74,
 			925,
 			16,
 			823,
-			srT).
-		AddRow(
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
-			nil,
+			srT,
+			32,
 		)
-
-	mock.ExpectQuery(sanitizeQuery(statDatabaseQuery)).WillReturnRows(rows)
+	mock.ExpectQuery(sanitizeQuery(statDatabaseQuery(columns))).WillReturnRows(rows)
 
 	ch := make(chan prometheus.Metric)
 	go func() {
 		defer close(ch)
-		c := PGStatDatabaseCollector{}
+		c := PGStatDatabaseCollector{
+			log: promslog.NewNopLogger().With("collector", "pg_stat_database"),
+		}
 
 		if err := c.Update(context.Background(), inst, ch); err != nil {
 			t.Errorf("Error calling PGStatDatabaseCollector.Update: %s", err)
@@ -328,23 +245,277 @@ func TestPGStatDatabaseCollectorRowLeakTest(t *testing.T) {
 		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 16},
 		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 823},
 		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 1685059842},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_GAUGE, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
-		{labels: labelMap{"datid": "unknown", "datname": "unknown"}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 0.032},
+	}
+
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}
+func TestPGStatDatabaseCollectorRowLeakTest(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db, version: semver.MustParse("14.0.0")}
+
+	columns := []string{
+		"datid",
+		"datname",
+		"numbackends",
+		"xact_commit",
+		"xact_rollback",
+		"blks_read",
+		"blks_hit",
+		"tup_returned",
+		"tup_fetched",
+		"tup_inserted",
+		"tup_updated",
+		"tup_deleted",
+		"conflicts",
+		"temp_files",
+		"temp_bytes",
+		"deadlocks",
+		"blk_read_time",
+		"blk_write_time",
+		"stats_reset",
+		"active_time",
+	}
+
+	srT, err := time.Parse("2006-01-02 15:04:05.00000-07", "2023-05-25 17:10:42.81132-07")
+	if err != nil {
+		t.Fatalf("Error parsing time: %s", err)
+	}
+
+	rows := sqlmock.NewRows(columns).
+		AddRow(
+			"pid",
+			"postgres",
+			354,
+			4945,
+			289097744,
+			1242257,
+			int64(3275602074),
+			89320867,
+			450139,
+			2034563757,
+			0,
+			int64(2725688749),
+			23,
+			52,
+			74,
+			925,
+			16,
+			823,
+			srT,
+			14,
+		).
+		AddRow(
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+			nil,
+		).
+		AddRow(
+			"pid",
+			"postgres",
+			355,
+			4946,
+			289097745,
+			1242258,
+			int64(3275602075),
+			89320868,
+			450140,
+			2034563758,
+			1,
+			int64(2725688750),
+			24,
+			53,
+			75,
+			926,
+			17,
+			824,
+			srT,
+			15,
+		)
+	mock.ExpectQuery(sanitizeQuery(statDatabaseQuery(columns))).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatDatabaseCollector{
+			log: promslog.NewNopLogger().With("collector", "pg_stat_database"),
+		}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatDatabaseCollector.Update: %s", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_GAUGE, value: 354},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 4945},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 289097744},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 1242257},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 3275602074},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 89320867},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 450139},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 2034563757},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 2725688749},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 23},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 52},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 74},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 925},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 16},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 823},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 1685059842},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 0.014},
+
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_GAUGE, value: 355},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 4946},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 289097745},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 1242258},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 3275602075},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 89320868},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 450140},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 2034563758},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 1},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 2725688750},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 24},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 53},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 75},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 926},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 17},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 824},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 1685059842},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 0.015},
+	}
+
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}
+
+func TestPGStatDatabaseCollectorTestNilStatReset(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db, version: semver.MustParse("14.0.0")}
+
+	columns := []string{
+		"datid",
+		"datname",
+		"numbackends",
+		"xact_commit",
+		"xact_rollback",
+		"blks_read",
+		"blks_hit",
+		"tup_returned",
+		"tup_fetched",
+		"tup_inserted",
+		"tup_updated",
+		"tup_deleted",
+		"conflicts",
+		"temp_files",
+		"temp_bytes",
+		"deadlocks",
+		"blk_read_time",
+		"blk_write_time",
+		"stats_reset",
+		"active_time",
+	}
+
+	rows := sqlmock.NewRows(columns).
+		AddRow(
+			"pid",
+			"postgres",
+			354,
+			4945,
+			289097744,
+			1242257,
+			int64(3275602074),
+			89320867,
+			450139,
+			2034563757,
+			0,
+			int64(2725688749),
+			23,
+			52,
+			74,
+			925,
+			16,
+			823,
+			nil,
+			7,
+		)
+
+	mock.ExpectQuery(sanitizeQuery(statDatabaseQuery(columns))).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatDatabaseCollector{
+			log: promslog.NewNopLogger().With("collector", "pg_stat_database"),
+		}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatDatabaseCollector.Update: %s", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_GAUGE, value: 354},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 4945},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 289097744},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 1242257},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 3275602074},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 89320867},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 450139},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 2034563757},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 2725688749},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 23},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 52},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 74},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 925},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 16},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 823},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 0},
+		{labels: labelMap{"datid": "pid", "datname": "postgres"}, metricType: dto.MetricType_COUNTER, value: 0.007},
 	}
 
 	convey.Convey("Metrics comparison", t, func() {

collector/pg_stat_progress_vacuum.go

@@ -0,0 +1,222 @@
+// Copyright 2025 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"context"
+	"database/sql"
+	"log/slog"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const progressVacuumSubsystem = "stat_progress_vacuum"
+
+func init() {
+	registerCollector(progressVacuumSubsystem, defaultEnabled, NewPGStatProgressVacuumCollector)
+}
+
+type PGStatProgressVacuumCollector struct {
+	log *slog.Logger
+}
+
+func NewPGStatProgressVacuumCollector(config collectorConfig) (Collector, error) {
+	return &PGStatProgressVacuumCollector{log: config.logger}, nil
+}
+
+var vacuumPhases = []string{
+	"initializing",
+	"scanning heap",
+	"vacuuming indexes",
+	"vacuuming heap",
+	"cleaning up indexes",
+	"truncating heap",
+	"performing final cleanup",
+}
+
+var (
+	statProgressVacuumPhase = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, progressVacuumSubsystem, "phase"),
+		"Current vacuum phase (1 = active, 0 = inactive). Label 'phase' is human-readable.",
+		[]string{"datname", "relname", "phase"},
+		nil,
+	)
+
+	statProgressVacuumHeapBlksTotal = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, progressVacuumSubsystem, "heap_blks"),
+		"Total number of heap blocks in the table being vacuumed.",
+		[]string{"datname", "relname"},
+		nil,
+	)
+
+	statProgressVacuumHeapBlksScanned = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, progressVacuumSubsystem, "heap_blks_scanned"),
+		"Number of heap blocks scanned so far.",
+		[]string{"datname", "relname"},
+		nil,
+	)
+
+	statProgressVacuumHeapBlksVacuumed = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, progressVacuumSubsystem, "heap_blks_vacuumed"),
+		"Number of heap blocks vacuumed so far.",
+		[]string{"datname", "relname"},
+		nil,
+	)
+
+	statProgressVacuumIndexVacuumCount = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, progressVacuumSubsystem, "index_vacuums"),
+		"Number of completed index vacuum cycles.",
+		[]string{"datname", "relname"},
+		nil,
+	)
+
+	statProgressVacuumMaxDeadTuples = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, progressVacuumSubsystem, "max_dead_tuples"),
+		"Maximum number of dead tuples that can be stored before cleanup is performed.",
+		[]string{"datname", "relname"},
+		nil,
+	)
+
+	statProgressVacuumNumDeadTuples = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, progressVacuumSubsystem, "num_dead_tuples"),
+		"Current number of dead tuples found so far.",
+		[]string{"datname", "relname"},
+		nil,
+	)
+
+	// This is the view definition of pg_stat_progress_vacuum, albeit without the conversion
+	// of "phase" to a human-readable string. We will prefer the numeric representation.
+	statProgressVacuumQuery = `SELECT
+		d.datname,
+		s.relid::regclass::text AS relname,
+		s.param1 AS phase,
+		s.param2 AS heap_blks_total,
+		s.param3 AS heap_blks_scanned,
+		s.param4 AS heap_blks_vacuumed,
+		s.param5 AS index_vacuum_count,
+		s.param6 AS max_dead_tuples,
+		s.param7 AS num_dead_tuples
+	FROM
+		pg_stat_get_progress_info('VACUUM'::text)
+		s(pid, datid, relid, param1, param2, param3, param4, param5, param6, param7, param8, param9, param10, param11, param12, param13, param14, param15, param16, param17, param18, param19, param20)
+	LEFT JOIN
+		pg_database d ON s.datid = d.oid`
+)
+
+func (c *PGStatProgressVacuumCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+	rows, err := db.QueryContext(ctx,
+		statProgressVacuumQuery)
+
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var (
+			datname          sql.NullString
+			relname          sql.NullString
+			phase            sql.NullInt64
+			heapBlksTotal    sql.NullInt64
+			heapBlksScanned  sql.NullInt64
+			heapBlksVacuumed sql.NullInt64
+			indexVacuumCount sql.NullInt64
+			maxDeadTuples    sql.NullInt64
+			numDeadTuples    sql.NullInt64
+		)
+
+		if err := rows.Scan(
+			&datname,
+			&relname,
+			&phase,
+			&heapBlksTotal,
+			&heapBlksScanned,
+			&heapBlksVacuumed,
+			&indexVacuumCount,
+			&maxDeadTuples,
+			&numDeadTuples,
+		); err != nil {
+			return err
+		}
+
+		datnameLabel := "unknown"
+		if datname.Valid {
+			datnameLabel = datname.String
+		}
+		relnameLabel := "unknown"
+		if relname.Valid {
+			relnameLabel = relname.String
+		}
+
+		labels := []string{datnameLabel, relnameLabel}
+
+		var phaseMetric *float64
+		if phase.Valid {
+			v := float64(phase.Int64)
+			phaseMetric = &v
+		}
+
+		for i, label := range vacuumPhases {
+			v := 0.0
+			// Only the current phase should be 1.0.
+			if phaseMetric != nil && float64(i) == *phaseMetric {
+				v = 1.0
+			}
+			labelsCopy := append(labels, label)
+			ch <- prometheus.MustNewConstMetric(statProgressVacuumPhase, prometheus.GaugeValue, v, labelsCopy...)
+		}
+
+		heapTotal := 0.0
+		if heapBlksTotal.Valid {
+			heapTotal = float64(heapBlksTotal.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(statProgressVacuumHeapBlksTotal, prometheus.GaugeValue, heapTotal, labels...)
+
+		heapScanned := 0.0
+		if heapBlksScanned.Valid {
+			heapScanned = float64(heapBlksScanned.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(statProgressVacuumHeapBlksScanned, prometheus.GaugeValue, heapScanned, labels...)
+
+		heapVacuumed := 0.0
+		if heapBlksVacuumed.Valid {
+			heapVacuumed = float64(heapBlksVacuumed.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(statProgressVacuumHeapBlksVacuumed, prometheus.GaugeValue, heapVacuumed, labels...)
+
+		indexCount := 0.0
+		if indexVacuumCount.Valid {
+			indexCount = float64(indexVacuumCount.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(statProgressVacuumIndexVacuumCount, prometheus.GaugeValue, indexCount, labels...)
+
+		maxDead := 0.0
+		if maxDeadTuples.Valid {
+			maxDead = float64(maxDeadTuples.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(statProgressVacuumMaxDeadTuples, prometheus.GaugeValue, maxDead, labels...)
+
+		numDead := 0.0
+		if numDeadTuples.Valid {
+			numDead = float64(numDeadTuples.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(statProgressVacuumNumDeadTuples, prometheus.GaugeValue, numDead, labels...)
+	}
+
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	return nil
+}

collector/pg_stat_progress_vacuum_test.go

@@ -0,0 +1,135 @@
+// Copyright 2025 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestPGStatProgressVacuumCollector(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db}
+
+	columns := []string{
+		"datname", "relname", "phase", "heap_blks_total", "heap_blks_scanned",
+		"heap_blks_vacuumed", "index_vacuum_count", "max_dead_tuples", "num_dead_tuples",
+	}
+
+	rows := sqlmock.NewRows(columns).AddRow(
+		"postgres", "a_table", 3, 3000, 400, 200, 2, 500, 123)
+
+	mock.ExpectQuery(sanitizeQuery(statProgressVacuumQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatProgressVacuumCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatProgressVacuumCollector.Update; %+v", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{"datname": "postgres", "relname": "a_table", "phase": "initializing"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table", "phase": "scanning heap"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table", "phase": "vacuuming indexes"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table", "phase": "vacuuming heap"}, metricType: dto.MetricType_GAUGE, value: 1},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table", "phase": "cleaning up indexes"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table", "phase": "truncating heap"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table", "phase": "performing final cleanup"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table"}, metricType: dto.MetricType_GAUGE, value: 3000},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table"}, metricType: dto.MetricType_GAUGE, value: 400},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table"}, metricType: dto.MetricType_GAUGE, value: 200},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table"}, metricType: dto.MetricType_GAUGE, value: 2},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table"}, metricType: dto.MetricType_GAUGE, value: 500},
+		{labels: labelMap{"datname": "postgres", "relname": "a_table"}, metricType: dto.MetricType_GAUGE, value: 123},
+	}
+
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(m, convey.ShouldResemble, expect)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("There were unfulfilled exceptions: %+v", err)
+	}
+}
+
+func TestPGStatProgressVacuumCollectorNullValues(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db}
+
+	columns := []string{
+		"datname", "relname", "phase", "heap_blks_total", "heap_blks_scanned",
+		"heap_blks_vacuumed", "index_vacuum_count", "max_dead_tuples", "num_dead_tuples",
+	}
+
+	rows := sqlmock.NewRows(columns).AddRow(
+		"postgres", nil, nil, nil, nil, nil, nil, nil, nil)
+
+	mock.ExpectQuery(sanitizeQuery(statProgressVacuumQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatProgressVacuumCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatProgressVacuumCollector.Update; %+v", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{"datname": "postgres", "relname": "unknown", "phase": "initializing"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown", "phase": "scanning heap"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown", "phase": "vacuuming indexes"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown", "phase": "vacuuming heap"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown", "phase": "cleaning up indexes"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown", "phase": "truncating heap"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown", "phase": "performing final cleanup"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown"}, metricType: dto.MetricType_GAUGE, value: 0},
+		{labels: labelMap{"datname": "postgres", "relname": "unknown"}, metricType: dto.MetricType_GAUGE, value: 0},
+	}
+
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("There were unfulfilled exceptions: %+v", err)
+	}
+}

collector/pg_stat_statements.go

@@ -16,8 +16,9 @@ package collector
 import (
 	"context"
 	"database/sql"
+	"log/slog"
 
-	"github.com/go-kit/log"
+	"github.com/blang/semver/v4"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -31,7 +32,7 @@ func init() {
 }
 
 type PGStatStatementsCollector struct {
-	log log.Logger
+	log *slog.Logger
 }
 
 func NewPGStatStatementsCollector(config collectorConfig) (Collector, error) {
@@ -90,12 +91,63 @@ var (
 		)
 	ORDER BY seconds_total DESC
 	LIMIT 100;`
+
+	pgStatStatementsNewQuery = `SELECT
+		pg_get_userbyid(userid) as user,
+		pg_database.datname,
+		pg_stat_statements.queryid,
+		pg_stat_statements.calls as calls_total,
+		pg_stat_statements.total_exec_time / 1000.0 as seconds_total,
+		pg_stat_statements.rows as rows_total,
+		pg_stat_statements.blk_read_time / 1000.0 as block_read_seconds_total,
+		pg_stat_statements.blk_write_time / 1000.0 as block_write_seconds_total
+		FROM pg_stat_statements
+	JOIN pg_database
+		ON pg_database.oid = pg_stat_statements.dbid
+	WHERE
+		total_exec_time > (
+		SELECT percentile_cont(0.1)
+			WITHIN GROUP (ORDER BY total_exec_time)
+			FROM pg_stat_statements
+		)
+	ORDER BY seconds_total DESC
+	LIMIT 100;`
+
+	pgStatStatementsQuery_PG17 = `SELECT
+		pg_get_userbyid(userid) as user,
+		pg_database.datname,
+		pg_stat_statements.queryid,
+		pg_stat_statements.calls as calls_total,
+		pg_stat_statements.total_exec_time / 1000.0 as seconds_total,
+		pg_stat_statements.rows as rows_total,
+		pg_stat_statements.shared_blk_read_time / 1000.0 as block_read_seconds_total,
+		pg_stat_statements.shared_blk_write_time / 1000.0 as block_write_seconds_total
+		FROM pg_stat_statements
+	JOIN pg_database
+		ON pg_database.oid = pg_stat_statements.dbid
+	WHERE
+		total_exec_time > (
+		SELECT percentile_cont(0.1)
+			WITHIN GROUP (ORDER BY total_exec_time)
+			FROM pg_stat_statements
+		)
+	ORDER BY seconds_total DESC
+	LIMIT 100;`
 )
 
 func (PGStatStatementsCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	var query string
+	switch {
+	case instance.version.GE(semver.MustParse("17.0.0")):
+		query = pgStatStatementsQuery_PG17
+	case instance.version.GE(semver.MustParse("13.0.0")):
+		query = pgStatStatementsNewQuery
+	default:
+		query = pgStatStatementsQuery
+	}
+
 	db := instance.getDB()
-	rows, err := db.QueryContext(ctx,
-		pgStatStatementsQuery)
+	rows, err := db.QueryContext(ctx, query)
 
 	if err != nil {
 		return err

collector/pg_stat_statements_test.go

@@ -17,6 +17,7 @@ import (
 	"testing"
 
 	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/blang/semver/v4"
 	"github.com/prometheus/client_golang/prometheus"
 	dto "github.com/prometheus/client_model/go"
 	"github.com/smartystreets/goconvey/convey"
@@ -29,7 +30,7 @@ func TestPGStateStatementsCollector(t *testing.T) {
 	}
 	defer db.Close()
 
-	inst := &instance{db: db}
+	inst := &instance{db: db, version: semver.MustParse("12.0.0")}
 
 	columns := []string{"user", "datname", "queryid", "calls_total", "seconds_total", "rows_total", "block_read_seconds_total", "block_write_seconds_total"}
 	rows := sqlmock.NewRows(columns).
@@ -72,12 +73,12 @@ func TestPGStateStatementsCollectorNull(t *testing.T) {
 	}
 	defer db.Close()
 
-	inst := &instance{db: db}
+	inst := &instance{db: db, version: semver.MustParse("13.3.7")}
 
 	columns := []string{"user", "datname", "queryid", "calls_total", "seconds_total", "rows_total", "block_read_seconds_total", "block_write_seconds_total"}
 	rows := sqlmock.NewRows(columns).
 		AddRow(nil, nil, nil, nil, nil, nil, nil, nil)
-	mock.ExpectQuery(sanitizeQuery(pgStatStatementsQuery)).WillReturnRows(rows)
+	mock.ExpectQuery(sanitizeQuery(pgStatStatementsNewQuery)).WillReturnRows(rows)
 
 	ch := make(chan prometheus.Metric)
 	go func() {
@@ -107,3 +108,89 @@ func TestPGStateStatementsCollectorNull(t *testing.T) {
 		t.Errorf("there were unfulfilled exceptions: %s", err)
 	}
 }
+
+func TestPGStateStatementsCollectorNewPG(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db, version: semver.MustParse("13.3.7")}
+
+	columns := []string{"user", "datname", "queryid", "calls_total", "seconds_total", "rows_total", "block_read_seconds_total", "block_write_seconds_total"}
+	rows := sqlmock.NewRows(columns).
+		AddRow("postgres", "postgres", 1500, 5, 0.4, 100, 0.1, 0.2)
+	mock.ExpectQuery(sanitizeQuery(pgStatStatementsNewQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatStatementsCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatStatementsCollector.Update: %s", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{"user": "postgres", "datname": "postgres", "queryid": "1500"}, metricType: dto.MetricType_COUNTER, value: 5},
+		{labels: labelMap{"user": "postgres", "datname": "postgres", "queryid": "1500"}, metricType: dto.MetricType_COUNTER, value: 0.4},
+		{labels: labelMap{"user": "postgres", "datname": "postgres", "queryid": "1500"}, metricType: dto.MetricType_COUNTER, value: 100},
+		{labels: labelMap{"user": "postgres", "datname": "postgres", "queryid": "1500"}, metricType: dto.MetricType_COUNTER, value: 0.1},
+		{labels: labelMap{"user": "postgres", "datname": "postgres", "queryid": "1500"}, metricType: dto.MetricType_COUNTER, value: 0.2},
+	}
+
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}
+
+func TestPGStateStatementsCollector_PG17(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db, version: semver.MustParse("17.0.0")}
+
+	columns := []string{"user", "datname", "queryid", "calls_total", "seconds_total", "rows_total", "block_read_seconds_total", "block_write_seconds_total"}
+	rows := sqlmock.NewRows(columns).
+		AddRow("postgres", "postgres", 1500, 5, 0.4, 100, 0.1, 0.2)
+	mock.ExpectQuery(sanitizeQuery(pgStatStatementsQuery_PG17)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatStatementsCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatStatementsCollector.Update: %s", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{"user": "postgres", "datname": "postgres", "queryid": "1500"}, metricType: dto.MetricType_COUNTER, value: 5},
+		{labels: labelMap{"user": "postgres", "datname": "postgres", "queryid": "1500"}, metricType: dto.MetricType_COUNTER, value: 0.4},
+		{labels: labelMap{"user": "postgres", "datname": "postgres", "queryid": "1500"}, metricType: dto.MetricType_COUNTER, value: 100},
+		{labels: labelMap{"user": "postgres", "datname": "postgres", "queryid": "1500"}, metricType: dto.MetricType_COUNTER, value: 0.1},
+		{labels: labelMap{"user": "postgres", "datname": "postgres", "queryid": "1500"}, metricType: dto.MetricType_COUNTER, value: 0.2},
+	}
+
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}

collector/pg_stat_user_tables.go

@@ -16,8 +16,8 @@ package collector
 import (
 	"context"
 	"database/sql"
+	"log/slog"
 
-	"github.com/go-kit/log"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -28,7 +28,7 @@ func init() {
 }
 
 type PGStatUserTablesCollector struct {
-	log log.Logger
+	log *slog.Logger
 }
 
 func NewPGStatUserTablesCollector(config collectorConfig) (Collector, error) {
@@ -150,6 +150,12 @@ var (
 		[]string{"datname", "schemaname", "relname"},
 		prometheus.Labels{},
 	)
+	statUserTablesTotalSize = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, userTableSubsystem, "size_bytes"),
+		"Total disk space used by this table, in bytes, including all indexes and TOAST data",
+		[]string{"datname", "schemaname", "relname"},
+		prometheus.Labels{},
+	)
 
 	statUserTablesQuery = `SELECT
 		current_database() datname,
@@ -173,7 +179,8 @@ var (
 		vacuum_count,
 		autovacuum_count,
 		analyze_count,
-		autoanalyze_count
+		autoanalyze_count,
+		pg_total_relation_size(relid) as total_size
 	FROM
 		pg_stat_user_tables`
 )
@@ -191,10 +198,10 @@ func (c *PGStatUserTablesCollector) Update(ctx context.Context, instance *instan
 	for rows.Next() {
 		var datname, schemaname, relname sql.NullString
 		var seqScan, seqTupRead, idxScan, idxTupFetch, nTupIns, nTupUpd, nTupDel, nTupHotUpd, nLiveTup, nDeadTup,
-			nModSinceAnalyze, vacuumCount, autovacuumCount, analyzeCount, autoanalyzeCount sql.NullInt64
+			nModSinceAnalyze, vacuumCount, autovacuumCount, analyzeCount, autoanalyzeCount, totalSize sql.NullInt64
 		var lastVacuum, lastAutovacuum, lastAnalyze, lastAutoanalyze sql.NullTime
 
-		if err := rows.Scan(&datname, &schemaname, &relname, &seqScan, &seqTupRead, &idxScan, &idxTupFetch, &nTupIns, &nTupUpd, &nTupDel, &nTupHotUpd, &nLiveTup, &nDeadTup, &nModSinceAnalyze, &lastVacuum, &lastAutovacuum, &lastAnalyze, &lastAutoanalyze, &vacuumCount, &autovacuumCount, &analyzeCount, &autoanalyzeCount); err != nil {
+		if err := rows.Scan(&datname, &schemaname, &relname, &seqScan, &seqTupRead, &idxScan, &idxTupFetch, &nTupIns, &nTupUpd, &nTupDel, &nTupHotUpd, &nLiveTup, &nDeadTup, &nModSinceAnalyze, &lastVacuum, &lastAutovacuum, &lastAnalyze, &lastAutoanalyze, &vacuumCount, &autovacuumCount, &analyzeCount, &autoanalyzeCount, &totalSize); err != nil {
 			return err
 		}
 
@@ -419,6 +426,17 @@ func (c *PGStatUserTablesCollector) Update(ctx context.Context, instance *instan
 			autoanalyzeCountMetric,
 			datnameLabel, schemanameLabel, relnameLabel,
 		)
+
+		totalSizeMetric := 0.0
+		if totalSize.Valid {
+			totalSizeMetric = float64(totalSize.Int64)
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statUserTablesTotalSize,
+			prometheus.GaugeValue,
+			totalSizeMetric,
+			datnameLabel, schemanameLabel, relnameLabel,
+		)
 	}
 
 	if err := rows.Err(); err != nil {

collector/pg_stat_user_tables_test.go

@@ -71,7 +71,8 @@ func TestPGStatUserTablesCollector(t *testing.T) {
 		"vacuum_count",
 		"autovacuum_count",
 		"analyze_count",
-		"autoanalyze_count"}
+		"autoanalyze_count",
+		"total_size"}
 	rows := sqlmock.NewRows(columns).
 		AddRow("postgres",
 			"public",
@@ -94,7 +95,8 @@ func TestPGStatUserTablesCollector(t *testing.T) {
 			11,
 			12,
 			13,
-			14)
+			14,
+			15)
 	mock.ExpectQuery(sanitizeQuery(statUserTablesQuery)).WillReturnRows(rows)
 	ch := make(chan prometheus.Metric)
 	go func() {
@@ -170,7 +172,8 @@ func TestPGStatUserTablesCollectorNullValues(t *testing.T) {
 		"vacuum_count",
 		"autovacuum_count",
 		"analyze_count",
-		"autoanalyze_count"}
+		"autoanalyze_count",
+		"total_size"}
 	rows := sqlmock.NewRows(columns).
 		AddRow("postgres",
 			nil,
@@ -193,6 +196,7 @@ func TestPGStatUserTablesCollectorNullValues(t *testing.T) {
 			nil,
 			nil,
 			nil,
+			nil,
 			nil)
 	mock.ExpectQuery(sanitizeQuery(statUserTablesQuery)).WillReturnRows(rows)
 	ch := make(chan prometheus.Metric)

collector/pg_stat_walreceiver.go

@@ -0,0 +1,270 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"log/slog"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+func init() {
+	registerCollector(statWalReceiverSubsystem, defaultDisabled, NewPGStatWalReceiverCollector)
+}
+
+type PGStatWalReceiverCollector struct {
+	log *slog.Logger
+}
+
+const statWalReceiverSubsystem = "stat_wal_receiver"
+
+func NewPGStatWalReceiverCollector(config collectorConfig) (Collector, error) {
+	return &PGStatWalReceiverCollector{log: config.logger}, nil
+}
+
+var (
+	labelCats                      = []string{"upstream_host", "slot_name", "status"}
+	statWalReceiverReceiveStartLsn = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statWalReceiverSubsystem, "receive_start_lsn"),
+		"First write-ahead log location used when WAL receiver is started represented as a decimal",
+		labelCats,
+		prometheus.Labels{},
+	)
+	statWalReceiverReceiveStartTli = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statWalReceiverSubsystem, "receive_start_tli"),
+		"First timeline number used when WAL receiver is started",
+		labelCats,
+		prometheus.Labels{},
+	)
+	statWalReceiverFlushedLSN = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statWalReceiverSubsystem, "flushed_lsn"),
+		"Last write-ahead log location already received and flushed to disk, the initial value of this field being the first log location used when WAL receiver is started represented as a decimal",
+		labelCats,
+		prometheus.Labels{},
+	)
+	statWalReceiverReceivedTli = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statWalReceiverSubsystem, "received_tli"),
+		"Timeline number of last write-ahead log location received and flushed to disk",
+		labelCats,
+		prometheus.Labels{},
+	)
+	statWalReceiverLastMsgSendTime = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statWalReceiverSubsystem, "last_msg_send_time"),
+		"Send time of last message received from origin WAL sender",
+		labelCats,
+		prometheus.Labels{},
+	)
+	statWalReceiverLastMsgReceiptTime = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statWalReceiverSubsystem, "last_msg_receipt_time"),
+		"Send time of last message received from origin WAL sender",
+		labelCats,
+		prometheus.Labels{},
+	)
+	statWalReceiverLatestEndLsn = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statWalReceiverSubsystem, "latest_end_lsn"),
+		"Last write-ahead log location reported to origin WAL sender as integer",
+		labelCats,
+		prometheus.Labels{},
+	)
+	statWalReceiverLatestEndTime = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statWalReceiverSubsystem, "latest_end_time"),
+		"Time of last write-ahead log location reported to origin WAL sender",
+		labelCats,
+		prometheus.Labels{},
+	)
+	statWalReceiverUpstreamNode = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statWalReceiverSubsystem, "upstream_node"),
+		"Node ID of the upstream node",
+		labelCats,
+		prometheus.Labels{},
+	)
+
+	pgStatWalColumnQuery = `
+	SELECT
+		column_name
+	FROM information_schema.columns
+	WHERE
+		table_name = 'pg_stat_wal_receiver' and
+		column_name = 'flushed_lsn'
+	`
+
+	pgStatWalReceiverQueryTemplate = `
+	SELECT
+		trim(both '''' from substring(conninfo from 'host=([^ ]*)')) as upstream_host,
+		slot_name,
+		status,
+		(receive_start_lsn- '0/0') %% (2^52)::bigint as receive_start_lsn,
+		%s
+receive_start_tli,
+		received_tli,
+		extract(epoch from last_msg_send_time) as last_msg_send_time,
+		extract(epoch from last_msg_receipt_time) as last_msg_receipt_time,
+		(latest_end_lsn - '0/0') %% (2^52)::bigint as latest_end_lsn,
+		extract(epoch from latest_end_time) as latest_end_time,
+		substring(slot_name from 'repmgr_slot_([0-9]*)') as upstream_node
+	FROM pg_catalog.pg_stat_wal_receiver
+	`
+)
+
+func (c *PGStatWalReceiverCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+	hasFlushedLSNRows, err := db.QueryContext(ctx, pgStatWalColumnQuery)
+	if err != nil {
+		return err
+	}
+
+	hasFlushedLSN := hasFlushedLSNRows.Next()
+	var query string
+	if hasFlushedLSN {
+		query = fmt.Sprintf(pgStatWalReceiverQueryTemplate, "(flushed_lsn - '0/0') % (2^52)::bigint as flushed_lsn,\n")
+	} else {
+		query = fmt.Sprintf(pgStatWalReceiverQueryTemplate, "")
+	}
+
+	hasFlushedLSNRows.Close()
+
+	rows, err := db.QueryContext(ctx, query)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var upstreamHost, slotName, status sql.NullString
+		var receiveStartLsn, receiveStartTli, flushedLsn, receivedTli, latestEndLsn, upstreamNode sql.NullInt64
+		var lastMsgSendTime, lastMsgReceiptTime, latestEndTime sql.NullFloat64
+
+		if hasFlushedLSN {
+			if err := rows.Scan(&upstreamHost, &slotName, &status, &receiveStartLsn, &receiveStartTli, &flushedLsn, &receivedTli, &lastMsgSendTime, &lastMsgReceiptTime, &latestEndLsn, &latestEndTime, &upstreamNode); err != nil {
+				return err
+			}
+		} else {
+			if err := rows.Scan(&upstreamHost, &slotName, &status, &receiveStartLsn, &receiveStartTli, &receivedTli, &lastMsgSendTime, &lastMsgReceiptTime, &latestEndLsn, &latestEndTime, &upstreamNode); err != nil {
+				return err
+			}
+		}
+		if !upstreamHost.Valid {
+			c.log.Debug("Skipping wal receiver stats because upstream host is null")
+			continue
+		}
+
+		if !slotName.Valid {
+			c.log.Debug("Skipping wal receiver stats because slotname host is null")
+			continue
+		}
+
+		if !status.Valid {
+			c.log.Debug("Skipping wal receiver stats because status is null")
+			continue
+		}
+		labels := []string{upstreamHost.String, slotName.String, status.String}
+
+		if !receiveStartLsn.Valid {
+			c.log.Debug("Skipping wal receiver stats because receive_start_lsn is null")
+			continue
+		}
+		if !receiveStartTli.Valid {
+			c.log.Debug("Skipping wal receiver stats because receive_start_tli is null")
+			continue
+		}
+		if hasFlushedLSN && !flushedLsn.Valid {
+			c.log.Debug("Skipping wal receiver stats because flushed_lsn is null")
+			continue
+		}
+		if !receivedTli.Valid {
+			c.log.Debug("Skipping wal receiver stats because received_tli is null")
+			continue
+		}
+		if !lastMsgSendTime.Valid {
+			c.log.Debug("Skipping wal receiver stats because last_msg_send_time is null")
+			continue
+		}
+		if !lastMsgReceiptTime.Valid {
+			c.log.Debug("Skipping wal receiver stats because last_msg_receipt_time is null")
+			continue
+		}
+		if !latestEndLsn.Valid {
+			c.log.Debug("Skipping wal receiver stats because latest_end_lsn is null")
+			continue
+		}
+		if !latestEndTime.Valid {
+			c.log.Debug("Skipping wal receiver stats because latest_end_time is null")
+			continue
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statWalReceiverReceiveStartLsn,
+			prometheus.CounterValue,
+			float64(receiveStartLsn.Int64),
+			labels...)
+
+		ch <- prometheus.MustNewConstMetric(
+			statWalReceiverReceiveStartTli,
+			prometheus.GaugeValue,
+			float64(receiveStartTli.Int64),
+			labels...)
+
+		if hasFlushedLSN {
+			ch <- prometheus.MustNewConstMetric(
+				statWalReceiverFlushedLSN,
+				prometheus.CounterValue,
+				float64(flushedLsn.Int64),
+				labels...)
+		}
+
+		ch <- prometheus.MustNewConstMetric(
+			statWalReceiverReceivedTli,
+			prometheus.GaugeValue,
+			float64(receivedTli.Int64),
+			labels...)
+
+		ch <- prometheus.MustNewConstMetric(
+			statWalReceiverLastMsgSendTime,
+			prometheus.CounterValue,
+			float64(lastMsgSendTime.Float64),
+			labels...)
+
+		ch <- prometheus.MustNewConstMetric(
+			statWalReceiverLastMsgReceiptTime,
+			prometheus.CounterValue,
+			float64(lastMsgReceiptTime.Float64),
+			labels...)
+
+		ch <- prometheus.MustNewConstMetric(
+			statWalReceiverLatestEndLsn,
+			prometheus.CounterValue,
+			float64(latestEndLsn.Int64),
+			labels...)
+
+		ch <- prometheus.MustNewConstMetric(
+			statWalReceiverLatestEndTime,
+			prometheus.CounterValue,
+			latestEndTime.Float64,
+			labels...)
+
+		if !upstreamNode.Valid {
+			c.log.Debug("Skipping wal receiver stats upstream_node because it is null")
+		} else {
+			ch <- prometheus.MustNewConstMetric(
+				statWalReceiverUpstreamNode,
+				prometheus.GaugeValue,
+				float64(upstreamNode.Int64),
+				labels...)
+		}
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	return nil
+}

collector/pg_stat_walreceiver_test.go

@@ -0,0 +1,186 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+var queryWithFlushedLSN = fmt.Sprintf(pgStatWalReceiverQueryTemplate, "(flushed_lsn - '0/0') % (2^52)::bigint as flushed_lsn,\n")
+var queryWithNoFlushedLSN = fmt.Sprintf(pgStatWalReceiverQueryTemplate, "")
+
+func TestPGStatWalReceiverCollectorWithFlushedLSN(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db}
+	infoSchemaColumns := []string{
+		"column_name",
+	}
+
+	infoSchemaRows := sqlmock.NewRows(infoSchemaColumns).
+		AddRow(
+			"flushed_lsn",
+		)
+
+	mock.ExpectQuery(sanitizeQuery(pgStatWalColumnQuery)).WillReturnRows(infoSchemaRows)
+
+	columns := []string{
+		"upstream_host",
+		"slot_name",
+		"status",
+		"receive_start_lsn",
+		"receive_start_tli",
+		"flushed_lsn",
+		"received_tli",
+		"last_msg_send_time",
+		"last_msg_receipt_time",
+		"latest_end_lsn",
+		"latest_end_time",
+		"upstream_node",
+	}
+	rows := sqlmock.NewRows(columns).
+		AddRow(
+			"foo",
+			"bar",
+			"stopping",
+			int64(1200668684563608),
+			1687321285,
+			int64(1200668684563609),
+			1687321280,
+			1687321275,
+			1687321276,
+			int64(1200668684563610),
+			1687321277,
+			5,
+		)
+
+	mock.ExpectQuery(sanitizeQuery(queryWithFlushedLSN)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatWalReceiverCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PgStatWalReceiverCollector.Update: %s", err)
+		}
+	}()
+	expected := []MetricResult{
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "stopping"}, value: 1200668684563608, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "stopping"}, value: 1687321285, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "stopping"}, value: 1200668684563609, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "stopping"}, value: 1687321280, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "stopping"}, value: 1687321275, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "stopping"}, value: 1687321276, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "stopping"}, value: 1200668684563610, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "stopping"}, value: 1687321277, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "stopping"}, value: 5, metricType: dto.MetricType_GAUGE},
+	}
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+
+}
+
+func TestPGStatWalReceiverCollectorWithNoFlushedLSN(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db}
+	infoSchemaColumns := []string{
+		"column_name",
+	}
+
+	infoSchemaRows := sqlmock.NewRows(infoSchemaColumns)
+
+	mock.ExpectQuery(sanitizeQuery(pgStatWalColumnQuery)).WillReturnRows(infoSchemaRows)
+
+	columns := []string{
+		"upstream_host",
+		"slot_name",
+		"status",
+		"receive_start_lsn",
+		"receive_start_tli",
+		"received_tli",
+		"last_msg_send_time",
+		"last_msg_receipt_time",
+		"latest_end_lsn",
+		"latest_end_time",
+		"upstream_node",
+	}
+	rows := sqlmock.NewRows(columns).
+		AddRow(
+			"foo",
+			"bar",
+			"starting",
+			int64(1200668684563608),
+			1687321285,
+			1687321280,
+			1687321275,
+			1687321276,
+			int64(1200668684563610),
+			1687321277,
+			5,
+		)
+	mock.ExpectQuery(sanitizeQuery(queryWithNoFlushedLSN)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatWalReceiverCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PgStatWalReceiverCollector.Update: %s", err)
+		}
+	}()
+	expected := []MetricResult{
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "starting"}, value: 1200668684563608, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "starting"}, value: 1687321285, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "starting"}, value: 1687321280, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "starting"}, value: 1687321275, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "starting"}, value: 1687321276, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "starting"}, value: 1200668684563610, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "starting"}, value: 1687321277, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"upstream_host": "foo", "slot_name": "bar", "status": "starting"}, value: 5, metricType: dto.MetricType_GAUGE},
+	}
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+
+}

collector/pg_statio_user_indexes.go

@@ -0,0 +1,118 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"database/sql"
+	"log/slog"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+func init() {
+	registerCollector(statioUserIndexesSubsystem, defaultDisabled, NewPGStatioUserIndexesCollector)
+}
+
+type PGStatioUserIndexesCollector struct {
+	log *slog.Logger
+}
+
+const statioUserIndexesSubsystem = "statio_user_indexes"
+
+func NewPGStatioUserIndexesCollector(config collectorConfig) (Collector, error) {
+	return &PGStatioUserIndexesCollector{log: config.logger}, nil
+}
+
+var (
+	statioUserIndexesIdxBlksRead = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statioUserIndexesSubsystem, "idx_blks_read_total"),
+		"Number of disk blocks read from this index",
+		[]string{"schemaname", "relname", "indexrelname"},
+		prometheus.Labels{},
+	)
+	statioUserIndexesIdxBlksHit = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statioUserIndexesSubsystem, "idx_blks_hit_total"),
+		"Number of buffer hits in this index",
+		[]string{"schemaname", "relname", "indexrelname"},
+		prometheus.Labels{},
+	)
+
+	statioUserIndexesQuery = `
+	SELECT
+		schemaname,
+		relname,
+		indexrelname,
+		idx_blks_read,
+		idx_blks_hit
+	FROM pg_statio_user_indexes
+	`
+)
+
+func (c *PGStatioUserIndexesCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+	rows, err := db.QueryContext(ctx,
+		statioUserIndexesQuery)
+
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var schemaname, relname, indexrelname sql.NullString
+		var idxBlksRead, idxBlksHit sql.NullFloat64
+
+		if err := rows.Scan(&schemaname, &relname, &indexrelname, &idxBlksRead, &idxBlksHit); err != nil {
+			return err
+		}
+		schemanameLabel := "unknown"
+		if schemaname.Valid {
+			schemanameLabel = schemaname.String
+		}
+		relnameLabel := "unknown"
+		if relname.Valid {
+			relnameLabel = relname.String
+		}
+		indexrelnameLabel := "unknown"
+		if indexrelname.Valid {
+			indexrelnameLabel = indexrelname.String
+		}
+		labels := []string{schemanameLabel, relnameLabel, indexrelnameLabel}
+
+		idxBlksReadMetric := 0.0
+		if idxBlksRead.Valid {
+			idxBlksReadMetric = idxBlksRead.Float64
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statioUserIndexesIdxBlksRead,
+			prometheus.CounterValue,
+			idxBlksReadMetric,
+			labels...,
+		)
+
+		idxBlksHitMetric := 0.0
+		if idxBlksHit.Valid {
+			idxBlksHitMetric = idxBlksHit.Float64
+		}
+		ch <- prometheus.MustNewConstMetric(
+			statioUserIndexesIdxBlksHit,
+			prometheus.CounterValue,
+			idxBlksHitMetric,
+			labels...,
+		)
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	return nil
+}

collector/pg_statio_user_indexes_test.go

@@ -0,0 +1,109 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestPgStatioUserIndexesCollector(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+	inst := &instance{db: db}
+	columns := []string{
+		"schemaname",
+		"relname",
+		"indexrelname",
+		"idx_blks_read",
+		"idx_blks_hit",
+	}
+	rows := sqlmock.NewRows(columns).
+		AddRow("public", "pgtest_accounts", "pgtest_accounts_pkey", 8, 9)
+
+	mock.ExpectQuery(sanitizeQuery(statioUserIndexesQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatioUserIndexesCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatioUserIndexesCollector.Update: %s", err)
+		}
+	}()
+	expected := []MetricResult{
+		{labels: labelMap{"schemaname": "public", "relname": "pgtest_accounts", "indexrelname": "pgtest_accounts_pkey"}, value: 8, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"schemaname": "public", "relname": "pgtest_accounts", "indexrelname": "pgtest_accounts_pkey"}, value: 9, metricType: dto.MetricType_COUNTER},
+	}
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}
+
+func TestPgStatioUserIndexesCollectorNull(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+	inst := &instance{db: db}
+	columns := []string{
+		"schemaname",
+		"relname",
+		"indexrelname",
+		"idx_blks_read",
+		"idx_blks_hit",
+	}
+	rows := sqlmock.NewRows(columns).
+		AddRow(nil, nil, nil, nil, nil)
+
+	mock.ExpectQuery(sanitizeQuery(statioUserIndexesQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGStatioUserIndexesCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGStatioUserIndexesCollector.Update: %s", err)
+		}
+	}()
+	expected := []MetricResult{
+		{labels: labelMap{"schemaname": "unknown", "relname": "unknown", "indexrelname": "unknown"}, value: 0, metricType: dto.MetricType_COUNTER},
+		{labels: labelMap{"schemaname": "unknown", "relname": "unknown", "indexrelname": "unknown"}, value: 0, metricType: dto.MetricType_COUNTER},
+	}
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}

collector/pg_statio_user_tables.go

@@ -16,8 +16,8 @@ package collector
 import (
 	"context"
 	"database/sql"
+	"log/slog"
 
-	"github.com/go-kit/log"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -28,7 +28,7 @@ func init() {
 }
 
 type PGStatIOUserTablesCollector struct {
-	log log.Logger
+	log *slog.Logger
 }
 
 func NewPGStatIOUserTablesCollector(config collectorConfig) (Collector, error) {
@@ -218,8 +218,5 @@ func (PGStatIOUserTablesCollector) Update(ctx context.Context, instance *instanc
 			datnameLabel, schemanameLabel, relnameLabel,
 		)
 	}
-	if err := rows.Err(); err != nil {
-		return err
-	}
-	return nil
+	return rows.Err()
 }

collector/pg_wal.go

@@ -0,0 +1,84 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"context"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const walSubsystem = "wal"
+
+func init() {
+	registerCollector(walSubsystem, defaultEnabled, NewPGWALCollector)
+}
+
+type PGWALCollector struct {
+}
+
+func NewPGWALCollector(config collectorConfig) (Collector, error) {
+	return &PGWALCollector{}, nil
+}
+
+var (
+	pgWALSegments = prometheus.NewDesc(
+		prometheus.BuildFQName(
+			namespace,
+			walSubsystem,
+			"segments",
+		),
+		"Number of WAL segments",
+		[]string{}, nil,
+	)
+	pgWALSize = prometheus.NewDesc(
+		prometheus.BuildFQName(
+			namespace,
+			walSubsystem,
+			"size_bytes",
+		),
+		"Total size of WAL segments",
+		[]string{}, nil,
+	)
+
+	pgWALQuery = `
+		SELECT
+			COUNT(*) AS segments,
+			SUM(size) AS size
+		FROM pg_ls_waldir()
+		WHERE name ~ '^[0-9A-F]{24}$'`
+)
+
+func (c PGWALCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+	row := db.QueryRowContext(ctx,
+		pgWALQuery,
+	)
+
+	var segments uint64
+	var size uint64
+	err := row.Scan(&segments, &size)
+	if err != nil {
+		return err
+	}
+	ch <- prometheus.MustNewConstMetric(
+		pgWALSegments,
+		prometheus.GaugeValue, float64(segments),
+	)
+	ch <- prometheus.MustNewConstMetric(
+		pgWALSize,
+		prometheus.GaugeValue, float64(size),
+	)
+	return nil
+}

collector/pg_wal_test.go

@@ -0,0 +1,63 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestPgWALCollector(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+
+	inst := &instance{db: db}
+
+	columns := []string{"segments", "size"}
+	rows := sqlmock.NewRows(columns).
+		AddRow(47, 788529152)
+	mock.ExpectQuery(sanitizeQuery(pgWALQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGWALCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGWALCollector.Update: %s", err)
+		}
+	}()
+
+	expected := []MetricResult{
+		{labels: labelMap{}, value: 47, metricType: dto.MetricType_GAUGE},
+		{labels: labelMap{}, value: 788529152, metricType: dto.MetricType_GAUGE},
+	}
+
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}

collector/pg_xlog_location.go

@@ -0,0 +1,90 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/blang/semver/v4"
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const xlogLocationSubsystem = "xlog_location"
+
+func init() {
+	registerCollector(xlogLocationSubsystem, defaultDisabled, NewPGXlogLocationCollector)
+}
+
+type PGXlogLocationCollector struct {
+	log *slog.Logger
+}
+
+func NewPGXlogLocationCollector(config collectorConfig) (Collector, error) {
+	return &PGXlogLocationCollector{log: config.logger}, nil
+}
+
+var (
+	xlogLocationBytes = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, xlogLocationSubsystem, "bytes"),
+		"Postgres LSN (log sequence number) being generated on primary or replayed on replica (truncated to low 52 bits)",
+		[]string{},
+		prometheus.Labels{},
+	)
+
+	xlogLocationQuery = `
+	SELECT CASE
+		WHEN pg_is_in_recovery() THEN (pg_last_xlog_replay_location() - '0/0') % (2^52)::bigint
+		ELSE (pg_current_xlog_location() - '0/0') % (2^52)::bigint
+	END AS bytes
+	`
+)
+
+func (c PGXlogLocationCollector) Update(ctx context.Context, instance *instance, ch chan<- prometheus.Metric) error {
+	db := instance.getDB()
+
+	// xlog was renmaed to WAL in PostgreSQL 10
+	// https://wiki.postgresql.org/wiki/New_in_postgres_10#Renaming_of_.22xlog.22_to_.22wal.22_Globally_.28and_location.2Flsn.29
+	after10 := instance.version.Compare(semver.MustParse("10.0.0"))
+	if after10 >= 0 {
+		c.log.Warn("xlog_location collector is not available on PostgreSQL >= 10.0.0, skipping")
+		return nil
+	}
+
+	rows, err := db.QueryContext(ctx,
+		xlogLocationQuery)
+
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var bytes float64
+
+		if err := rows.Scan(&bytes); err != nil {
+			return err
+		}
+
+		ch <- prometheus.MustNewConstMetric(
+			xlogLocationBytes,
+			prometheus.GaugeValue,
+			bytes,
+		)
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	return nil
+}

collector/pg_xlog_location_test.go

@@ -0,0 +1,61 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package collector
+
+import (
+	"context"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestPGXlogLocationCollector(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("Error opening a stub db connection: %s", err)
+	}
+	defer db.Close()
+	inst := &instance{db: db}
+	columns := []string{
+		"bytes",
+	}
+	rows := sqlmock.NewRows(columns).
+		AddRow(53401)
+
+	mock.ExpectQuery(sanitizeQuery(xlogLocationQuery)).WillReturnRows(rows)
+
+	ch := make(chan prometheus.Metric)
+	go func() {
+		defer close(ch)
+		c := PGXlogLocationCollector{}
+
+		if err := c.Update(context.Background(), inst, ch); err != nil {
+			t.Errorf("Error calling PGXlogLocationCollector.Update: %s", err)
+		}
+	}()
+	expected := []MetricResult{
+		{labels: labelMap{}, value: 53401, metricType: dto.MetricType_GAUGE},
+	}
+	convey.Convey("Metrics comparison", t, func() {
+		for _, expect := range expected {
+			m := readMetric(<-ch)
+			convey.So(expect, convey.ShouldResemble, m)
+		}
+	})
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Errorf("there were unfulfilled exceptions: %s", err)
+	}
+}

collector/probe.go

@@ -15,9 +15,9 @@ package collector
 
 import (
 	"context"
+	"log/slog"
 	"sync"
 
-	"github.com/go-kit/log"
 	"github.com/prometheus-community/postgres_exporter/config"
 	"github.com/prometheus/client_golang/prometheus"
 )
@@ -25,11 +25,11 @@ import (
 type ProbeCollector struct {
 	registry   *prometheus.Registry
 	collectors map[string]Collector
-	logger     log.Logger
+	logger     *slog.Logger
 	instance   *instance
 }
 
-func NewProbeCollector(logger log.Logger, excludeDatabases []string, registry *prometheus.Registry, dsn config.DSN) (*ProbeCollector, error) {
+func NewProbeCollector(logger *slog.Logger, excludeDatabases []string, registry *prometheus.Registry, dsn config.DSN) (*ProbeCollector, error) {
 	collectors := make(map[string]Collector)
 	initiatedCollectorsMtx.Lock()
 	defer initiatedCollectorsMtx.Unlock()
@@ -46,7 +46,7 @@ func NewProbeCollector(logger log.Logger, excludeDatabases []string, registry *p
 		} else {
 			collector, err := factories[key](
 				collectorConfig{
-					logger:           log.With(logger, "collector", key),
+					logger:           logger.With("collector", key),
 					excludeDatabases: excludeDatabases,
 				})
 			if err != nil {
@@ -74,6 +74,14 @@ func (pc *ProbeCollector) Describe(ch chan<- *prometheus.Desc) {
 }
 
 func (pc *ProbeCollector) Collect(ch chan<- prometheus.Metric) {
+	// Set up the database connection for the collector.
+	err := pc.instance.setup()
+	if err != nil {
+		pc.logger.Error("Error opening connection to database", "err", err)
+		return
+	}
+	defer pc.instance.Close()
+
 	wg := sync.WaitGroup{}
 	wg.Add(len(pc.collectors))
 	for name, c := range pc.collectors {

config/config.go

@@ -15,10 +15,10 @@ package config
 
 import (
 	"fmt"
+	"log/slog"
 	"os"
 	"sync"
 
-	"github.com/go-kit/log"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promauto"
 	"gopkg.in/yaml.v3"
@@ -65,7 +65,7 @@ func (ch *Handler) GetConfig() *Config {
 	return ch.Config
 }
 
-func (ch *Handler) ReloadConfig(f string, logger log.Logger) error {
+func (ch *Handler) ReloadConfig(f string, logger *slog.Logger) error {
 	config := &Config{}
 	var err error
 	defer func() {
@@ -79,14 +79,14 @@ func (ch *Handler) ReloadConfig(f string, logger log.Logger) error {
 
 	yamlReader, err := os.Open(f)
 	if err != nil {
-		return fmt.Errorf("Error opening config file %q: %s", f, err)
+		return fmt.Errorf("error opening config file %q: %s", f, err)
 	}
 	defer yamlReader.Close()
 	decoder := yaml.NewDecoder(yamlReader)
 	decoder.KnownFields(true)
 
 	if err = decoder.Decode(config); err != nil {
-		return fmt.Errorf("Error parsing config file %q: %s", f, err)
+		return fmt.Errorf("error parsing config file %q: %s", f, err)
 	}
 
 	ch.Lock()

config/config_test.go

@@ -24,7 +24,7 @@ func TestLoadConfig(t *testing.T) {
 
 	err := ch.ReloadConfig("testdata/config-good.yaml", nil)
 	if err != nil {
-		t.Errorf("Error loading config: %s", err)
+		t.Errorf("error loading config: %s", err)
 	}
 }
 
@@ -39,11 +39,11 @@ func TestLoadBadConfigs(t *testing.T) {
 	}{
 		{
 			input: "testdata/config-bad-auth-module.yaml",
-			want:  "Error parsing config file \"testdata/config-bad-auth-module.yaml\": yaml: unmarshal errors:\n  line 3: field pretendauth not found in type config.AuthModule",
+			want:  "error parsing config file \"testdata/config-bad-auth-module.yaml\": yaml: unmarshal errors:\n  line 3: field pretendauth not found in type config.AuthModule",
 		},
 		{
 			input: "testdata/config-bad-extra-field.yaml",
-			want:  "Error parsing config file \"testdata/config-bad-extra-field.yaml\": yaml: unmarshal errors:\n  line 8: field doesNotExist not found in type config.AuthModule",
+			want:  "error parsing config file \"testdata/config-bad-extra-field.yaml\": yaml: unmarshal errors:\n  line 8: field doesNotExist not found in type config.AuthModule",
 		},
 	}
 

go.mod

@@ -1,18 +1,19 @@
 module github.com/prometheus-community/postgres_exporter
 
-go 1.19
+go 1.23.0
+
+toolchain go1.24.1
 
 require (
-	github.com/DATA-DOG/go-sqlmock v1.5.0
-	github.com/alecthomas/kingpin/v2 v2.3.2
+	github.com/DATA-DOG/go-sqlmock v1.5.2
+	github.com/alecthomas/kingpin/v2 v2.4.0
 	github.com/blang/semver/v4 v4.0.0
-	github.com/go-kit/log v0.2.1
 	github.com/lib/pq v1.10.9
-	github.com/prometheus/client_golang v1.15.1
-	github.com/prometheus/client_model v0.4.0
-	github.com/prometheus/common v0.44.0
-	github.com/prometheus/exporter-toolkit v0.10.0
-	github.com/smartystreets/goconvey v1.8.0
+	github.com/prometheus/client_golang v1.21.1
+	github.com/prometheus/client_model v0.6.1
+	github.com/prometheus/common v0.63.0
+	github.com/prometheus/exporter-toolkit v0.14.0
+	github.com/smartystreets/goconvey v1.8.1
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c
 	gopkg.in/yaml.v2 v2.4.0
 	gopkg.in/yaml.v3 v3.0.1
@@ -21,27 +22,27 @@ require (
 require (
 	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
-	github.com/go-logfmt/logfmt v0.5.1 // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/gopherjs/gopherjs v1.17.2 // indirect
 	github.com/jpillora/backoff v1.0.0 // indirect
 	github.com/jtolds/gls v4.20.0+incompatible // indirect
+	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/kr/pretty v0.3.1 // indirect
 	github.com/kr/text v0.2.0 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/mdlayher/socket v0.4.1 // indirect
+	github.com/mdlayher/vsock v1.2.1 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
-	github.com/prometheus/procfs v0.9.0 // indirect
+	github.com/prometheus/procfs v0.15.1 // indirect
 	github.com/rogpeppe/go-internal v1.10.0 // indirect
-	github.com/smartystreets/assertions v1.13.1 // indirect
+	github.com/smarty/assertions v1.15.0 // indirect
 	github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
-	golang.org/x/crypto v0.8.0 // indirect
-	golang.org/x/net v0.10.0 // indirect
-	golang.org/x/oauth2 v0.8.0 // indirect
-	golang.org/x/sync v0.1.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
-	golang.org/x/text v0.9.0 // indirect
-	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/protobuf v1.30.0 // indirect
+	golang.org/x/crypto v0.35.0 // indirect
+	golang.org/x/net v0.36.0 // indirect
+	golang.org/x/oauth2 v0.25.0 // indirect
+	golang.org/x/sync v0.11.0 // indirect
+	golang.org/x/sys v0.30.0 // indirect
+	golang.org/x/text v0.22.0 // indirect
+	google.golang.org/protobuf v1.36.5 // indirect
 )

go.sum

@@ -1,38 +1,33 @@
-github.com/DATA-DOG/go-sqlmock v1.5.0 h1:Shsta01QNfFxHCfpW6YH2STWB0MudeXXEWMr20OEh60=
-github.com/DATA-DOG/go-sqlmock v1.5.0/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
-github.com/alecthomas/kingpin/v2 v2.3.2 h1:H0aULhgmSzN8xQ3nX1uxtdlTHYoPLu5AhHxWrKI6ocU=
-github.com/alecthomas/kingpin/v2 v2.3.2/go.mod h1:0gyi0zQnjuFk8xrkNKamJoyUo382HRL7ATRpFZCw6tE=
+github.com/DATA-DOG/go-sqlmock v1.5.2 h1:OcvFkGmslmlZibjAjaHm3L//6LiuBgolP7OputlJIzU=
+github.com/DATA-DOG/go-sqlmock v1.5.2/go.mod h1:88MAG/4G7SMwSE3CeA0ZKzrT5CiOU3OJ+JlNzwDqpNU=
+github.com/alecthomas/kingpin/v2 v2.4.0 h1:f48lwail6p8zpO1bC4TxtqACaGqHYA22qkHjHpqDjYY=
+github.com/alecthomas/kingpin/v2 v2.4.0/go.mod h1:0gyi0zQnjuFk8xrkNKamJoyUo382HRL7ATRpFZCw6tE=
 github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 h1:s6gZFSlWYmbqAuRjVTiNNhvNRfY2Wxp9nhfyel4rklc=
 github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/blang/semver/v4 v4.0.0 h1:1PFHFE6yCCTv8C1TeyNNarDzntLi7wMI5i/pzqYIsAM=
 github.com/blang/semver/v4 v4.0.0/go.mod h1:IbckMUScFkM3pff0VJDNKRiT6TG/YpiHIM2yvyW5YoQ=
-github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
-github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/coreos/go-systemd/v22 v22.5.0 h1:RrqgGjYQKalulkV8NGVIfkXQf6YYmOyiJKk8iXXhfZs=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/go-kit/log v0.2.1 h1:MRVx0/zhvdseW+Gza6N9rVzU/IVzaeE1SFI4raAhmBU=
-github.com/go-kit/log v0.2.1/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
-github.com/go-logfmt/logfmt v0.5.1 h1:otpy5pqBCBZ1ng9RQ0dPu4PN7ba75Y/aA+UpowDyNVA=
-github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
-github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
-github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/gopherjs/gopherjs v1.17.2 h1:fQnZVsXk8uxXIStYb0N4bGk7jeyTalG/wsZjQ25dO0g=
 github.com/gopherjs/gopherjs v1.17.2/go.mod h1:pRRIvn/QzFLrKfvEz3qUuEhtE/zLCWfreZ6J5gM2i+k=
 github.com/jpillora/backoff v1.0.0 h1:uvFg412JmmHBHw7iwprIxkPMI+sGQ4kzOWsMeHnm2EA=
 github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
 github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
+github.com/kisielk/sqlstruct v0.0.0-20201105191214-5f3e10d3ab46/go.mod h1:yyMNCyc/Ib3bDTKd379tNMpB/7/H5TjM2Y9QJ5THLbE=
+github.com/klauspost/compress v1.17.11 h1:In6xLpyWOi1+C7tXUUWv2ot1QvBjxevKAaI6IXrJmUc=
+github.com/klauspost/compress v1.17.11/go.mod h1:pMDklpSncoRMuLFrf1W9Ss9KT+0rH90U12bZKk7uwG0=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
@@ -40,63 +35,58 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
+github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
 github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
-github.com/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zkfA9PSy5pEvNWRP0ET0TIVo=
-github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
+github.com/mdlayher/socket v0.4.1 h1:eM9y2/jlbs1M615oshPQOHZzj6R6wMT7bX5NPiQvn2U=
+github.com/mdlayher/socket v0.4.1/go.mod h1:cAqeGjoufqdxWkD7DkpyS+wcefOtmu5OQ8KuoJGIReA=
+github.com/mdlayher/vsock v1.2.1 h1:pC1mTJTvjo1r9n9fbm7S1j04rCgCzhCOS5DY0zqHlnQ=
+github.com/mdlayher/vsock v1.2.1/go.mod h1:NRfCibel++DgeMD8z/hP+PPTjlNJsdPOmxcnENvE+SE=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f h1:KUppIJq7/+SVif2QVs3tOP0zanoHgBEVAwHxUSIzRqU=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_golang v1.15.1 h1:8tXpTmJbyH5lydzFPoxSIJ0J46jdh3tylbvM1xCv0LI=
-github.com/prometheus/client_golang v1.15.1/go.mod h1:e9yaBhRPU2pPNsZwE+JdQl0KEt1N9XgF6zxWmaC0xOk=
-github.com/prometheus/client_model v0.4.0 h1:5lQXD3cAg1OXBf4Wq03gTrXHeaV0TQvGfUooCfx1yqY=
-github.com/prometheus/client_model v0.4.0/go.mod h1:oMQmHW1/JoDwqLtg57MGgP/Fb1CJEYF2imWWhWtMkYU=
-github.com/prometheus/common v0.44.0 h1:+5BrQJwiBB9xsMygAB3TNvpQKOwlkc25LbISbrdOOfY=
-github.com/prometheus/common v0.44.0/go.mod h1:ofAIvZbQ1e/nugmZGz4/qCb9Ap1VoSTIO7x0VV9VvuY=
-github.com/prometheus/exporter-toolkit v0.10.0 h1:yOAzZTi4M22ZzVxD+fhy1URTuNRj/36uQJJ5S8IPza8=
-github.com/prometheus/exporter-toolkit v0.10.0/go.mod h1:+sVFzuvV5JDyw+Ih6p3zFxZNVnKQa3x5qPmDSiPu4ZY=
-github.com/prometheus/procfs v0.9.0 h1:wzCHvIvM5SxWqYvwgVL7yJY8Lz3PKn49KQtpgMYJfhI=
-github.com/prometheus/procfs v0.9.0/go.mod h1:+pB4zwohETzFnmlpe6yd2lSc+0/46IYZRB/chUwxUZY=
+github.com/prometheus/client_golang v1.21.1 h1:DOvXXTqVzvkIewV/CDPFdejpMCGeMcbGCQ8YOmu+Ibk=
+github.com/prometheus/client_golang v1.21.1/go.mod h1:U9NM32ykUErtVBxdvD3zfi+EuFkkaBvMb09mIfe0Zgg=
+github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
+github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
+github.com/prometheus/common v0.63.0 h1:YR/EIY1o3mEFP/kZCD7iDMnLPlGyuU2Gb3HIcXnA98k=
+github.com/prometheus/common v0.63.0/go.mod h1:VVFF/fBIoToEnWRVkYoXEkq3R3paCoxG9PXP74SnV18=
+github.com/prometheus/exporter-toolkit v0.14.0 h1:NMlswfibpcZZ+H0sZBiTjrA3/aBFHkNZqE+iCj5EmRg=
+github.com/prometheus/exporter-toolkit v0.14.0/go.mod h1:Gu5LnVvt7Nr/oqTBUC23WILZepW0nffNo10XdhQcwWA=
+github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc=
+github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk=
 github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
 github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
-github.com/smartystreets/assertions v1.13.1 h1:Ef7KhSmjZcK6AVf9YbJdvPYG9avaF0ZxudX+ThRdWfU=
-github.com/smartystreets/assertions v1.13.1/go.mod h1:cXr/IwVfSo/RbCSPhoAPv73p3hlSdrBH/b3SdnW/LMY=
-github.com/smartystreets/goconvey v1.8.0 h1:Oi49ha/2MURE0WexF052Z0m+BNSGirfjg5RL+JXWq3w=
-github.com/smartystreets/goconvey v1.8.0/go.mod h1:EdX8jtrTIj26jmjCOVNMVSIYAtgexqXKHOXW2Dx9JLg=
+github.com/smarty/assertions v1.15.0 h1:cR//PqUBUiQRakZWqBiFFQ9wb8emQGDb0HeGdqGByCY=
+github.com/smarty/assertions v1.15.0/go.mod h1:yABtdzeQs6l1brC900WlRNwj6ZR55d7B+E8C6HtKdec=
+github.com/smartystreets/goconvey v1.8.1 h1:qGjIddxOk4grTu9JPOU31tVfq3cNdBlNa5sSznIX1xY=
+github.com/smartystreets/goconvey v1.8.1/go.mod h1:+/u4qLyY6x1jReYOp7GOM2FSt8aP9CzCZL03bI28W60=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
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