789 lines
17 KiB
Go
789 lines
17 KiB
Go
// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package promlint_test
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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"github.com/prometheus/prometheus/util/promlint"
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)
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type test struct {
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name string
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in string
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problems []promlint.Problem
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}
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func TestLintNoHelpText(t *testing.T) {
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const msg = "no help text"
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tests := []test{
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{
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name: "no help",
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in: `
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# TYPE go_goroutines gauge
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go_goroutines 24
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`,
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problems: []promlint.Problem{{
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Metric: "go_goroutines",
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Text: msg,
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}},
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},
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{
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name: "empty help",
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in: `
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# HELP go_goroutines
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# TYPE go_goroutines gauge
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go_goroutines 24
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`,
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problems: []promlint.Problem{{
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Metric: "go_goroutines",
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Text: msg,
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}},
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},
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{
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name: "no help and empty help",
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in: `
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# HELP go_goroutines
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# TYPE go_goroutines gauge
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go_goroutines 24
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# TYPE go_threads gauge
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go_threads 10
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`,
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problems: []promlint.Problem{
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{
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Metric: "go_goroutines",
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Text: msg,
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},
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{
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Metric: "go_threads",
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Text: msg,
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},
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},
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},
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{
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name: "OK",
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in: `
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# HELP go_goroutines Number of goroutines that currently exist.
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# TYPE go_goroutines gauge
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go_goroutines 24
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`,
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},
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}
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runTests(t, tests)
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}
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func TestLintMetricUnits(t *testing.T) {
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tests := []struct {
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name string
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in string
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problems []promlint.Problem
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}{
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// good cases.
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{
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name: "amperes",
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in: `
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# HELP x_amperes Test metric.
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# TYPE x_amperes untyped
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x_amperes 10
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`,
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},
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{
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name: "bytes",
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in: `
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# HELP x_bytes Test metric.
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# TYPE x_bytes untyped
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x_bytes 10
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`,
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},
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{
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name: "grams",
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in: `
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# HELP x_grams Test metric.
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# TYPE x_grams untyped
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x_grams 10
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`,
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},
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{
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name: "celsius",
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in: `
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# HELP x_celsius Test metric.
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# TYPE x_celsius untyped
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x_celsius 10
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`,
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},
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{
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name: "meters",
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in: `
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# HELP x_meters Test metric.
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# TYPE x_meters untyped
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x_meters 10
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`,
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},
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{
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name: "metres",
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in: `
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# HELP x_metres Test metric.
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# TYPE x_metres untyped
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x_metres 10
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`,
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},
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{
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name: "moles",
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in: `
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# HELP x_moles Test metric.
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# TYPE x_moles untyped
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x_moles 10
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`,
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},
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{
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name: "seconds",
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in: `
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# HELP x_seconds Test metric.
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# TYPE x_seconds untyped
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x_seconds 10
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`,
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},
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{
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name: "joules",
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in: `
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# HELP x_joules Test metric.
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# TYPE x_joules untyped
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x_joules 10
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`,
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},
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// bad cases.
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{
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name: "milliamperes",
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in: `
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# HELP x_milliamperes Test metric.
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# TYPE x_milliamperes untyped
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x_milliamperes 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_milliamperes",
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Text: `use base unit "amperes" instead of "milliamperes"`,
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}},
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},
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{
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name: "gigabytes",
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in: `
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# HELP x_gigabytes Test metric.
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# TYPE x_gigabytes untyped
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x_gigabytes 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_gigabytes",
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Text: `use base unit "bytes" instead of "gigabytes"`,
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}},
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},
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{
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name: "kilograms",
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in: `
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# HELP x_kilograms Test metric.
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# TYPE x_kilograms untyped
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x_kilograms 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_kilograms",
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Text: `use base unit "grams" instead of "kilograms"`,
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}},
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},
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{
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name: "nanocelsius",
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in: `
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# HELP x_nanocelsius Test metric.
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# TYPE x_nanocelsius untyped
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x_nanocelsius 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_nanocelsius",
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Text: `use base unit "celsius" instead of "nanocelsius"`,
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}},
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},
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{
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name: "kilometers",
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in: `
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# HELP x_kilometers Test metric.
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# TYPE x_kilometers untyped
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x_kilometers 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_kilometers",
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Text: `use base unit "meters" instead of "kilometers"`,
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}},
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},
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{
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name: "picometers",
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in: `
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# HELP x_picometers Test metric.
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# TYPE x_picometers untyped
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x_picometers 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_picometers",
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Text: `use base unit "meters" instead of "picometers"`,
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}},
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},
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{
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name: "microseconds",
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in: `
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# HELP x_microseconds Test metric.
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# TYPE x_microseconds untyped
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x_microseconds 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_microseconds",
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Text: `use base unit "seconds" instead of "microseconds"`,
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}},
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},
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{
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name: "minutes",
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in: `
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# HELP x_minutes Test metric.
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# TYPE x_minutes untyped
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x_minutes 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_minutes",
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Text: `use base unit "seconds" instead of "minutes"`,
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}},
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},
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{
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name: "hours",
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in: `
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# HELP x_hours Test metric.
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# TYPE x_hours untyped
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x_hours 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_hours",
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Text: `use base unit "seconds" instead of "hours"`,
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}},
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},
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{
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name: "days",
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in: `
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# HELP x_days Test metric.
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# TYPE x_days untyped
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x_days 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_days",
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Text: `use base unit "seconds" instead of "days"`,
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}},
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},
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{
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name: "kelvin",
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in: `
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# HELP x_kelvin Test metric.
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# TYPE x_kelvin untyped
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x_kelvin 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_kelvin",
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Text: `use base unit "celsius" instead of "kelvin"`,
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}},
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},
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{
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name: "kelvins",
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in: `
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# HELP x_kelvins Test metric.
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# TYPE x_kelvins untyped
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x_kelvins 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_kelvins",
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Text: `use base unit "celsius" instead of "kelvins"`,
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}},
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},
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{
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name: "fahrenheit",
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in: `
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# HELP thermometers_fahrenheit Test metric.
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# TYPE thermometers_fahrenheit untyped
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thermometers_fahrenheit 10
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`,
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problems: []promlint.Problem{{
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Metric: "thermometers_fahrenheit",
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Text: `use base unit "celsius" instead of "fahrenheit"`,
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}},
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},
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{
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name: "rankine",
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in: `
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# HELP thermometers_rankine Test metric.
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# TYPE thermometers_rankine untyped
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thermometers_rankine 10
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`,
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problems: []promlint.Problem{{
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Metric: "thermometers_rankine",
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Text: `use base unit "celsius" instead of "rankine"`,
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}},
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}, {
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name: "inches",
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in: `
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# HELP x_inches Test metric.
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# TYPE x_inches untyped
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x_inches 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_inches",
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Text: `use base unit "meters" instead of "inches"`,
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}},
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}, {
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name: "yards",
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in: `
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# HELP x_yards Test metric.
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# TYPE x_yards untyped
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x_yards 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_yards",
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Text: `use base unit "meters" instead of "yards"`,
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}},
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}, {
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name: "miles",
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in: `
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# HELP x_miles Test metric.
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# TYPE x_miles untyped
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x_miles 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_miles",
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Text: `use base unit "meters" instead of "miles"`,
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}},
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}, {
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name: "bits",
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in: `
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# HELP x_bits Test metric.
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# TYPE x_bits untyped
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x_bits 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_bits",
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Text: `use base unit "bytes" instead of "bits"`,
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}},
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},
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{
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name: "calories",
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in: `
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# HELP x_calories Test metric.
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# TYPE x_calories untyped
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x_calories 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_calories",
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Text: `use base unit "joules" instead of "calories"`,
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}},
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},
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{
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name: "pounds",
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in: `
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# HELP x_pounds Test metric.
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# TYPE x_pounds untyped
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x_pounds 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_pounds",
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Text: `use base unit "grams" instead of "pounds"`,
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}},
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},
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{
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name: "ounces",
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in: `
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# HELP x_ounces Test metric.
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# TYPE x_ounces untyped
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x_ounces 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_ounces",
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Text: `use base unit "grams" instead of "ounces"`,
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}},
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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l := promlint.New(strings.NewReader(tt.in))
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problems, err := l.Lint()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if want, got := tt.problems, problems; !reflect.DeepEqual(want, got) {
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t.Fatalf("unexpected problems:\n- want: %v\n- got: %v",
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want, got)
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}
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})
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}
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}
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func TestLintCounter(t *testing.T) {
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tests := []test{
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{
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name: "counter without _total suffix",
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in: `
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# HELP x_bytes Test metric.
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# TYPE x_bytes counter
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x_bytes 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_bytes",
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Text: `counter metrics should have "_total" suffix`,
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}},
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},
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{
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name: "gauge with _total suffix",
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in: `
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# HELP x_bytes_total Test metric.
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# TYPE x_bytes_total gauge
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x_bytes_total 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_bytes_total",
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Text: `non-counter metrics should not have "_total" suffix`,
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}},
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},
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{
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name: "counter with _total suffix",
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in: `
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# HELP x_bytes_total Test metric.
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# TYPE x_bytes_total counter
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x_bytes_total 10
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`,
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},
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{
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name: "gauge without _total suffix",
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in: `
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# HELP x_bytes Test metric.
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# TYPE x_bytes gauge
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x_bytes 10
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`,
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},
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{
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name: "untyped with _total suffix",
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in: `
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# HELP x_bytes_total Test metric.
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# TYPE x_bytes_total untyped
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x_bytes_total 10
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`,
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},
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{
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name: "untyped without _total suffix",
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in: `
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# HELP x_bytes Test metric.
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# TYPE x_bytes untyped
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x_bytes 10
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`,
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},
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}
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|
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runTests(t, tests)
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}
|
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|
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func TestLintHistogramSummaryReserved(t *testing.T) {
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tests := []test{
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{
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name: "gauge with _bucket suffix",
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in: `
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# HELP x_bytes_bucket Test metric.
|
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# TYPE x_bytes_bucket gauge
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x_bytes_bucket 10
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`,
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problems: []promlint.Problem{{
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Metric: "x_bytes_bucket",
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Text: `non-histogram metrics should not have "_bucket" suffix`,
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}},
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},
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{
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name: "gauge with _count suffix",
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in: `
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# HELP x_bytes_count Test metric.
|
|
# TYPE x_bytes_count gauge
|
|
x_bytes_count 10
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`,
|
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problems: []promlint.Problem{{
|
|
Metric: "x_bytes_count",
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Text: `non-histogram and non-summary metrics should not have "_count" suffix`,
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}},
|
|
},
|
|
{
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name: "gauge with _sum suffix",
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in: `
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# HELP x_bytes_sum Test metric.
|
|
# TYPE x_bytes_sum gauge
|
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x_bytes_sum 10
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`,
|
|
problems: []promlint.Problem{{
|
|
Metric: "x_bytes_sum",
|
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Text: `non-histogram and non-summary metrics should not have "_sum" suffix`,
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|
}},
|
|
},
|
|
{
|
|
name: "gauge with le label",
|
|
in: `
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# HELP x_bytes Test metric.
|
|
# TYPE x_bytes gauge
|
|
x_bytes{le="1"} 10
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|
`,
|
|
problems: []promlint.Problem{{
|
|
Metric: "x_bytes",
|
|
Text: `non-histogram metrics should not have "le" label`,
|
|
}},
|
|
},
|
|
{
|
|
name: "gauge with quantile label",
|
|
in: `
|
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# HELP x_bytes Test metric.
|
|
# TYPE x_bytes gauge
|
|
x_bytes{quantile="1"} 10
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|
`,
|
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problems: []promlint.Problem{{
|
|
Metric: "x_bytes",
|
|
Text: `non-summary metrics should not have "quantile" label`,
|
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}},
|
|
},
|
|
{
|
|
name: "histogram with quantile label",
|
|
in: `
|
|
# HELP tsdb_compaction_duration Duration of compaction runs.
|
|
# TYPE tsdb_compaction_duration histogram
|
|
tsdb_compaction_duration_bucket{le="0.005",quantile="0.01"} 0
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tsdb_compaction_duration_bucket{le="0.01",quantile="0.01"} 0
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tsdb_compaction_duration_bucket{le="0.025",quantile="0.01"} 0
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tsdb_compaction_duration_bucket{le="0.05",quantile="0.01"} 0
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tsdb_compaction_duration_bucket{le="0.1",quantile="0.01"} 0
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tsdb_compaction_duration_bucket{le="0.25",quantile="0.01"} 0
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tsdb_compaction_duration_bucket{le="0.5",quantile="0.01"} 57
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tsdb_compaction_duration_bucket{le="1",quantile="0.01"} 68
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tsdb_compaction_duration_bucket{le="2.5",quantile="0.01"} 69
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tsdb_compaction_duration_bucket{le="5",quantile="0.01"} 69
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tsdb_compaction_duration_bucket{le="10",quantile="0.01"} 69
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tsdb_compaction_duration_bucket{le="+Inf",quantile="0.01"} 69
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tsdb_compaction_duration_sum 28.740810936000006
|
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tsdb_compaction_duration_count 69
|
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`,
|
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problems: []promlint.Problem{{
|
|
Metric: "tsdb_compaction_duration",
|
|
Text: `non-summary metrics should not have "quantile" label`,
|
|
}},
|
|
},
|
|
{
|
|
name: "summary with le label",
|
|
in: `
|
|
# HELP go_gc_duration_seconds A summary of the GC invocation durations.
|
|
# TYPE go_gc_duration_seconds summary
|
|
go_gc_duration_seconds{quantile="0",le="0.01"} 4.2365e-05
|
|
go_gc_duration_seconds{quantile="0.25",le="0.01"} 8.1492e-05
|
|
go_gc_duration_seconds{quantile="0.5",le="0.01"} 0.000100656
|
|
go_gc_duration_seconds{quantile="0.75",le="0.01"} 0.000113913
|
|
go_gc_duration_seconds{quantile="1",le="0.01"} 0.021754305
|
|
go_gc_duration_seconds_sum 1.769429004
|
|
go_gc_duration_seconds_count 5962
|
|
`,
|
|
problems: []promlint.Problem{{
|
|
Metric: "go_gc_duration_seconds",
|
|
Text: `non-histogram metrics should not have "le" label`,
|
|
}},
|
|
},
|
|
{
|
|
name: "histogram OK",
|
|
in: `
|
|
# HELP tsdb_compaction_duration Duration of compaction runs.
|
|
# TYPE tsdb_compaction_duration histogram
|
|
tsdb_compaction_duration_bucket{le="0.005"} 0
|
|
tsdb_compaction_duration_bucket{le="0.01"} 0
|
|
tsdb_compaction_duration_bucket{le="0.025"} 0
|
|
tsdb_compaction_duration_bucket{le="0.05"} 0
|
|
tsdb_compaction_duration_bucket{le="0.1"} 0
|
|
tsdb_compaction_duration_bucket{le="0.25"} 0
|
|
tsdb_compaction_duration_bucket{le="0.5"} 57
|
|
tsdb_compaction_duration_bucket{le="1"} 68
|
|
tsdb_compaction_duration_bucket{le="2.5"} 69
|
|
tsdb_compaction_duration_bucket{le="5"} 69
|
|
tsdb_compaction_duration_bucket{le="10"} 69
|
|
tsdb_compaction_duration_bucket{le="+Inf"} 69
|
|
tsdb_compaction_duration_sum 28.740810936000006
|
|
tsdb_compaction_duration_count 69
|
|
`,
|
|
},
|
|
{
|
|
name: "summary OK",
|
|
in: `
|
|
# HELP go_gc_duration_seconds A summary of the GC invocation durations.
|
|
# TYPE go_gc_duration_seconds summary
|
|
go_gc_duration_seconds{quantile="0"} 4.2365e-05
|
|
go_gc_duration_seconds{quantile="0.25"} 8.1492e-05
|
|
go_gc_duration_seconds{quantile="0.5"} 0.000100656
|
|
go_gc_duration_seconds{quantile="0.75"} 0.000113913
|
|
go_gc_duration_seconds{quantile="1"} 0.021754305
|
|
go_gc_duration_seconds_sum 1.769429004
|
|
go_gc_duration_seconds_count 5962
|
|
`,
|
|
},
|
|
}
|
|
runTests(t, tests)
|
|
}
|
|
|
|
func TestLintMetricTypeInName(t *testing.T) {
|
|
genTest := func(n, t, err string, problems ...promlint.Problem) test {
|
|
return test{
|
|
name: fmt.Sprintf("%s with _%s suffix", t, t),
|
|
in: fmt.Sprintf(`
|
|
# HELP %s Test metric.
|
|
# TYPE %s %s
|
|
%s 10
|
|
`, n, n, t, n),
|
|
problems: append(problems, promlint.Problem{
|
|
Metric: n,
|
|
Text: fmt.Sprintf(`metric name should not include type '%s'`, err),
|
|
}),
|
|
}
|
|
}
|
|
|
|
twoProbTest := genTest("http_requests_counter", "counter", "counter", promlint.Problem{
|
|
Metric: "http_requests_counter",
|
|
Text: `counter metrics should have "_total" suffix`,
|
|
})
|
|
|
|
tests := []test{
|
|
twoProbTest,
|
|
genTest("instance_memory_limit_bytes_gauge", "gauge", "gauge"),
|
|
genTest("request_duration_seconds_summary", "summary", "summary"),
|
|
genTest("request_duration_seconds_summary", "histogram", "summary"),
|
|
genTest("request_duration_seconds_histogram", "histogram", "histogram"),
|
|
genTest("request_duration_seconds_HISTOGRAM", "histogram", "histogram"),
|
|
|
|
genTest("instance_memory_limit_gauge_bytes", "gauge", "gauge"),
|
|
}
|
|
runTests(t, tests)
|
|
}
|
|
|
|
func TestLintReservedChars(t *testing.T) {
|
|
tests := []test{
|
|
{
|
|
name: "request_duration::_seconds",
|
|
in: `
|
|
# HELP request_duration::_seconds Test metric.
|
|
# TYPE request_duration::_seconds histogram
|
|
request_duration::_seconds 10
|
|
`,
|
|
problems: []promlint.Problem{
|
|
{
|
|
Metric: "request_duration::_seconds",
|
|
Text: "metric names should not contain ':'",
|
|
},
|
|
},
|
|
},
|
|
}
|
|
runTests(t, tests)
|
|
}
|
|
|
|
func TestLintCamelCase(t *testing.T) {
|
|
tests := []test{
|
|
{
|
|
name: "requestDuration_seconds",
|
|
in: `
|
|
# HELP requestDuration_seconds Test metric.
|
|
# TYPE requestDuration_seconds histogram
|
|
requestDuration_seconds 10
|
|
`,
|
|
problems: []promlint.Problem{
|
|
{
|
|
Metric: "requestDuration_seconds",
|
|
Text: "metric names should be written in 'snake_case' not 'camelCase'",
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "request_duration_seconds",
|
|
in: `
|
|
# HELP request_duration_seconds Test metric.
|
|
# TYPE request_duration_seconds histogram
|
|
request_duration_seconds{httpService="foo"} 10
|
|
`,
|
|
problems: []promlint.Problem{
|
|
{
|
|
Metric: "request_duration_seconds",
|
|
Text: "label names should be written in 'snake_case' not 'camelCase'",
|
|
},
|
|
},
|
|
},
|
|
}
|
|
runTests(t, tests)
|
|
}
|
|
|
|
func TestLintUnitAbbreviations(t *testing.T) {
|
|
genTest := func(n string) test {
|
|
return test{
|
|
name: fmt.Sprintf("%s with abbreviated unit", n),
|
|
in: fmt.Sprintf(`
|
|
# HELP %s Test metric.
|
|
# TYPE %s gauge
|
|
%s 10
|
|
`, n, n, n),
|
|
problems: []promlint.Problem{
|
|
promlint.Problem{
|
|
Metric: n,
|
|
Text: "metric names should not contain abbreviated units",
|
|
},
|
|
},
|
|
}
|
|
}
|
|
tests := []test{
|
|
genTest("instance_memory_limit_b"),
|
|
genTest("instance_memory_limit_kb"),
|
|
genTest("instance_memory_limit_mb"),
|
|
genTest("instance_memory_limit_MB"),
|
|
genTest("instance_memory_limit_gb"),
|
|
genTest("instance_memory_limit_tb"),
|
|
genTest("instance_memory_limit_pb"),
|
|
|
|
genTest("request_duration_s"),
|
|
genTest("request_duration_ms"),
|
|
genTest("request_duration_us"),
|
|
genTest("request_duration_ns"),
|
|
genTest("request_duration_sec"),
|
|
genTest("request_sec_duration"),
|
|
genTest("request_duration_m"),
|
|
genTest("request_duration_h"),
|
|
genTest("request_duration_d"),
|
|
}
|
|
runTests(t, tests)
|
|
}
|
|
|
|
func runTests(t *testing.T, tests []test) {
|
|
t.Helper()
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
l := promlint.New(strings.NewReader(tt.in))
|
|
|
|
problems, err := l.Lint()
|
|
if err != nil {
|
|
t.Fatalf("unexpected error: %v", err)
|
|
}
|
|
|
|
if want, got := tt.problems, problems; !reflect.DeepEqual(want, got) {
|
|
t.Fatalf("unexpected problems:\n- want: %v\n- got: %v",
|
|
want, got)
|
|
}
|
|
})
|
|
}
|
|
}
|