610 lines
17 KiB
Go
610 lines
17 KiB
Go
// Copyright 2016 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 web
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import (
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net"
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"net/http"
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"net/http/httptest"
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"net/url"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"sync"
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"testing"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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prom_testutil "github.com/prometheus/client_golang/prometheus/testutil"
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"github.com/stretchr/testify/require"
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"github.com/prometheus/prometheus/config"
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"github.com/prometheus/prometheus/notifier"
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"github.com/prometheus/prometheus/rules"
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"github.com/prometheus/prometheus/scrape"
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"github.com/prometheus/prometheus/tsdb"
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"github.com/prometheus/prometheus/util/testutil"
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)
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func TestMain(m *testing.M) {
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// On linux with a global proxy the tests will fail as the go client(http,grpc) tries to connect through the proxy.
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os.Setenv("no_proxy", "localhost,127.0.0.1,0.0.0.0,:")
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os.Exit(m.Run())
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}
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type dbAdapter struct {
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*tsdb.DB
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}
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func (a *dbAdapter) Stats(statsByLabelName string) (*tsdb.Stats, error) {
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return a.Head().Stats(statsByLabelName), nil
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}
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func (a *dbAdapter) WALReplayStatus() (tsdb.WALReplayStatus, error) {
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return tsdb.WALReplayStatus{}, nil
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}
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func TestReadyAndHealthy(t *testing.T) {
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t.Parallel()
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dbDir := t.TempDir()
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db, err := tsdb.Open(dbDir, nil, nil, nil, nil)
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require.NoError(t, err)
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t.Cleanup(func() {
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require.NoError(t, db.Close())
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})
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port := fmt.Sprintf(":%d", testutil.RandomUnprivilegedPort(t))
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opts := &Options{
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ListenAddress: port,
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ReadTimeout: 30 * time.Second,
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MaxConnections: 512,
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Context: nil,
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Storage: nil,
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LocalStorage: &dbAdapter{db},
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TSDBDir: dbDir,
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QueryEngine: nil,
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ScrapeManager: &scrape.Manager{},
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RuleManager: &rules.Manager{},
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Notifier: nil,
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RoutePrefix: "/",
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EnableAdminAPI: true,
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ExternalURL: &url.URL{
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Scheme: "http",
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Host: "localhost" + port,
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Path: "/",
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},
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Version: &PrometheusVersion{},
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Gatherer: prometheus.DefaultGatherer,
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}
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opts.Flags = map[string]string{}
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webHandler := New(nil, opts)
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webHandler.config = &config.Config{}
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webHandler.notifier = ¬ifier.Manager{}
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l, err := webHandler.Listener()
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if err != nil {
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panic(fmt.Sprintf("Unable to start web listener: %s", err))
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}
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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go func() {
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err := webHandler.Run(ctx, l, "")
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if err != nil {
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panic(fmt.Sprintf("Can't start web handler:%s", err))
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}
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}()
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// Give some time for the web goroutine to run since we need the server
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// to be up before starting tests.
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time.Sleep(5 * time.Second)
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baseURL := "http://localhost" + port
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resp, err := http.Get(baseURL + "/-/healthy")
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require.NoError(t, err)
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require.Equal(t, http.StatusOK, resp.StatusCode)
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cleanupTestResponse(t, resp)
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for _, u := range []string{
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baseURL + "/-/ready",
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} {
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resp, err = http.Get(u)
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require.NoError(t, err)
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require.Equal(t, http.StatusServiceUnavailable, resp.StatusCode)
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cleanupTestResponse(t, resp)
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}
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resp, err = http.Post(baseURL+"/api/v1/admin/tsdb/snapshot", "", strings.NewReader(""))
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require.NoError(t, err)
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require.Equal(t, http.StatusServiceUnavailable, resp.StatusCode)
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cleanupTestResponse(t, resp)
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resp, err = http.Post(baseURL+"/api/v1/admin/tsdb/delete_series", "", strings.NewReader("{}"))
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require.NoError(t, err)
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require.Equal(t, http.StatusServiceUnavailable, resp.StatusCode)
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cleanupTestResponse(t, resp)
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// Set to ready.
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webHandler.SetReady(true)
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for _, u := range []string{
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baseURL + "/-/healthy",
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baseURL + "/-/ready",
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} {
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resp, err = http.Get(u)
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require.NoError(t, err)
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require.Equal(t, http.StatusOK, resp.StatusCode)
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cleanupTestResponse(t, resp)
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}
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resp, err = http.Post(baseURL+"/api/v1/admin/tsdb/snapshot", "", strings.NewReader(""))
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require.NoError(t, err)
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require.Equal(t, http.StatusOK, resp.StatusCode)
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cleanupSnapshot(t, dbDir, resp)
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cleanupTestResponse(t, resp)
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resp, err = http.Post(baseURL+"/api/v1/admin/tsdb/delete_series?match[]=up", "", nil)
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require.NoError(t, err)
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require.Equal(t, http.StatusNoContent, resp.StatusCode)
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cleanupTestResponse(t, resp)
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}
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func TestRoutePrefix(t *testing.T) {
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t.Parallel()
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dbDir := t.TempDir()
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db, err := tsdb.Open(dbDir, nil, nil, nil, nil)
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require.NoError(t, err)
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t.Cleanup(func() {
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require.NoError(t, db.Close())
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})
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port := fmt.Sprintf(":%d", testutil.RandomUnprivilegedPort(t))
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opts := &Options{
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ListenAddress: port,
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ReadTimeout: 30 * time.Second,
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MaxConnections: 512,
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Context: nil,
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TSDBDir: dbDir,
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LocalStorage: &dbAdapter{db},
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Storage: nil,
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QueryEngine: nil,
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ScrapeManager: nil,
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RuleManager: nil,
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Notifier: nil,
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RoutePrefix: "/prometheus",
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EnableAdminAPI: true,
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ExternalURL: &url.URL{
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Host: "localhost.localdomain" + port,
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Scheme: "http",
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},
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}
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opts.Flags = map[string]string{}
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webHandler := New(nil, opts)
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l, err := webHandler.Listener()
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if err != nil {
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panic(fmt.Sprintf("Unable to start web listener: %s", err))
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}
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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go func() {
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err := webHandler.Run(ctx, l, "")
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if err != nil {
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panic(fmt.Sprintf("Can't start web handler:%s", err))
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}
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}()
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// Give some time for the web goroutine to run since we need the server
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// to be up before starting tests.
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time.Sleep(5 * time.Second)
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baseURL := "http://localhost" + port
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resp, err := http.Get(baseURL + opts.RoutePrefix + "/-/healthy")
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require.NoError(t, err)
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require.Equal(t, http.StatusOK, resp.StatusCode)
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cleanupTestResponse(t, resp)
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resp, err = http.Get(baseURL + opts.RoutePrefix + "/-/ready")
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require.NoError(t, err)
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require.Equal(t, http.StatusServiceUnavailable, resp.StatusCode)
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cleanupTestResponse(t, resp)
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resp, err = http.Post(baseURL+opts.RoutePrefix+"/api/v1/admin/tsdb/snapshot", "", strings.NewReader(""))
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require.NoError(t, err)
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require.Equal(t, http.StatusServiceUnavailable, resp.StatusCode)
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cleanupTestResponse(t, resp)
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resp, err = http.Post(baseURL+opts.RoutePrefix+"/api/v1/admin/tsdb/delete_series", "", strings.NewReader("{}"))
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require.NoError(t, err)
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require.Equal(t, http.StatusServiceUnavailable, resp.StatusCode)
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cleanupTestResponse(t, resp)
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// Set to ready.
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webHandler.SetReady(true)
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resp, err = http.Get(baseURL + opts.RoutePrefix + "/-/healthy")
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require.NoError(t, err)
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require.Equal(t, http.StatusOK, resp.StatusCode)
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cleanupTestResponse(t, resp)
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resp, err = http.Get(baseURL + opts.RoutePrefix + "/-/ready")
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require.NoError(t, err)
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require.Equal(t, http.StatusOK, resp.StatusCode)
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cleanupTestResponse(t, resp)
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resp, err = http.Post(baseURL+opts.RoutePrefix+"/api/v1/admin/tsdb/snapshot", "", strings.NewReader(""))
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require.NoError(t, err)
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require.Equal(t, http.StatusOK, resp.StatusCode)
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cleanupSnapshot(t, dbDir, resp)
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cleanupTestResponse(t, resp)
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resp, err = http.Post(baseURL+opts.RoutePrefix+"/api/v1/admin/tsdb/delete_series?match[]=up", "", nil)
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require.NoError(t, err)
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require.Equal(t, http.StatusNoContent, resp.StatusCode)
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cleanupTestResponse(t, resp)
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}
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func TestDebugHandler(t *testing.T) {
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for _, tc := range []struct {
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prefix, url string
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code int
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}{
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{"/", "/debug/pprof/cmdline", 200},
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{"/foo", "/foo/debug/pprof/cmdline", 200},
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{"/", "/debug/pprof/goroutine", 200},
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{"/foo", "/foo/debug/pprof/goroutine", 200},
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{"/", "/debug/pprof/foo", 404},
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{"/foo", "/bar/debug/pprof/goroutine", 404},
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} {
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opts := &Options{
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RoutePrefix: tc.prefix,
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ListenAddress: "somehost:9090",
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ExternalURL: &url.URL{
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Host: "localhost.localdomain:9090",
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Scheme: "http",
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},
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}
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handler := New(nil, opts)
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handler.SetReady(true)
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w := httptest.NewRecorder()
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req, err := http.NewRequest("GET", tc.url, nil)
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require.NoError(t, err)
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handler.router.ServeHTTP(w, req)
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require.Equal(t, tc.code, w.Code)
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}
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}
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func TestHTTPMetrics(t *testing.T) {
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t.Parallel()
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handler := New(nil, &Options{
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RoutePrefix: "/",
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ListenAddress: "somehost:9090",
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ExternalURL: &url.URL{
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Host: "localhost.localdomain:9090",
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Scheme: "http",
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},
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})
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getReady := func() int {
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t.Helper()
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w := httptest.NewRecorder()
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req, err := http.NewRequest("GET", "/-/ready", nil)
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require.NoError(t, err)
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handler.router.ServeHTTP(w, req)
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return w.Code
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}
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code := getReady()
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require.Equal(t, http.StatusServiceUnavailable, code)
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ready := handler.metrics.readyStatus
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require.Equal(t, 0, int(prom_testutil.ToFloat64(ready)))
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counter := handler.metrics.requestCounter
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require.Equal(t, 1, int(prom_testutil.ToFloat64(counter.WithLabelValues("/-/ready", strconv.Itoa(http.StatusServiceUnavailable)))))
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handler.SetReady(true)
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for range [2]int{} {
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code = getReady()
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require.Equal(t, http.StatusOK, code)
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}
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require.Equal(t, 1, int(prom_testutil.ToFloat64(ready)))
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require.Equal(t, 2, int(prom_testutil.ToFloat64(counter.WithLabelValues("/-/ready", strconv.Itoa(http.StatusOK)))))
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require.Equal(t, 1, int(prom_testutil.ToFloat64(counter.WithLabelValues("/-/ready", strconv.Itoa(http.StatusServiceUnavailable)))))
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handler.SetReady(false)
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for range [2]int{} {
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code = getReady()
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require.Equal(t, http.StatusServiceUnavailable, code)
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}
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require.Equal(t, 0, int(prom_testutil.ToFloat64(ready)))
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require.Equal(t, 2, int(prom_testutil.ToFloat64(counter.WithLabelValues("/-/ready", strconv.Itoa(http.StatusOK)))))
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require.Equal(t, 3, int(prom_testutil.ToFloat64(counter.WithLabelValues("/-/ready", strconv.Itoa(http.StatusServiceUnavailable)))))
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}
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func TestShutdownWithStaleConnection(t *testing.T) {
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dbDir := t.TempDir()
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db, err := tsdb.Open(dbDir, nil, nil, nil, nil)
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require.NoError(t, err)
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t.Cleanup(func() {
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require.NoError(t, db.Close())
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})
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timeout := 10 * time.Second
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port := fmt.Sprintf(":%d", testutil.RandomUnprivilegedPort(t))
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opts := &Options{
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ListenAddress: port,
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ReadTimeout: timeout,
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MaxConnections: 512,
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Context: nil,
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Storage: nil,
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LocalStorage: &dbAdapter{db},
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TSDBDir: dbDir,
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QueryEngine: nil,
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ScrapeManager: &scrape.Manager{},
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RuleManager: &rules.Manager{},
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Notifier: nil,
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RoutePrefix: "/",
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ExternalURL: &url.URL{
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Scheme: "http",
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Host: "localhost" + port,
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Path: "/",
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},
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Version: &PrometheusVersion{},
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Gatherer: prometheus.DefaultGatherer,
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}
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opts.Flags = map[string]string{}
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webHandler := New(nil, opts)
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webHandler.config = &config.Config{}
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webHandler.notifier = ¬ifier.Manager{}
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l, err := webHandler.Listener()
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if err != nil {
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panic(fmt.Sprintf("Unable to start web listener: %s", err))
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}
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closed := make(chan struct{})
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ctx, cancel := context.WithCancel(context.Background())
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go func() {
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err := webHandler.Run(ctx, l, "")
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if err != nil {
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panic(fmt.Sprintf("Can't start web handler:%s", err))
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}
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close(closed)
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}()
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// Give some time for the web goroutine to run since we need the server
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// to be up before starting tests.
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time.Sleep(5 * time.Second)
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// Open a socket, and don't use it. This connection should then be closed
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// after the ReadTimeout.
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c, err := net.Dial("tcp", opts.ExternalURL.Host)
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require.NoError(t, err)
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t.Cleanup(func() { require.NoError(t, c.Close()) })
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// Stop the web handler.
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cancel()
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select {
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case <-closed:
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case <-time.After(timeout + 5*time.Second):
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t.Fatalf("Server still running after read timeout.")
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}
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}
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func TestHandleMultipleQuitRequests(t *testing.T) {
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port := fmt.Sprintf(":%d", testutil.RandomUnprivilegedPort(t))
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opts := &Options{
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ListenAddress: port,
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MaxConnections: 512,
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EnableLifecycle: true,
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RoutePrefix: "/",
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ExternalURL: &url.URL{
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Scheme: "http",
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Host: "localhost" + port,
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Path: "/",
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},
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}
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webHandler := New(nil, opts)
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webHandler.config = &config.Config{}
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webHandler.notifier = ¬ifier.Manager{}
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l, err := webHandler.Listener()
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if err != nil {
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panic(fmt.Sprintf("Unable to start web listener: %s", err))
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}
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ctx, cancel := context.WithCancel(context.Background())
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closed := make(chan struct{})
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go func() {
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err := webHandler.Run(ctx, l, "")
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if err != nil {
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panic(fmt.Sprintf("Can't start web handler:%s", err))
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}
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close(closed)
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}()
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// Give some time for the web goroutine to run since we need the server
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// to be up before starting tests.
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time.Sleep(5 * time.Second)
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baseURL := opts.ExternalURL.Scheme + "://" + opts.ExternalURL.Host
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start := make(chan struct{})
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var wg sync.WaitGroup
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for i := 0; i < 3; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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<-start
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resp, err := http.Post(baseURL+"/-/quit", "", strings.NewReader(""))
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require.NoError(t, err)
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require.Equal(t, http.StatusOK, resp.StatusCode)
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}()
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}
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close(start)
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wg.Wait()
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// Stop the web handler.
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cancel()
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select {
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case <-closed:
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case <-time.After(5 * time.Second):
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t.Fatalf("Server still running after 5 seconds.")
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}
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}
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// Test for availability of API endpoints in Prometheus Agent mode.
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func TestAgentAPIEndPoints(t *testing.T) {
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t.Parallel()
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port := fmt.Sprintf(":%d", testutil.RandomUnprivilegedPort(t))
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opts := &Options{
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ListenAddress: port,
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ReadTimeout: 30 * time.Second,
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MaxConnections: 512,
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Context: nil,
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Storage: nil,
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QueryEngine: nil,
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ScrapeManager: &scrape.Manager{},
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RuleManager: &rules.Manager{},
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Notifier: nil,
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RoutePrefix: "/",
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EnableAdminAPI: true,
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ExternalURL: &url.URL{
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Scheme: "http",
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Host: "localhost" + port,
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Path: "/",
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},
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Version: &PrometheusVersion{},
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Gatherer: prometheus.DefaultGatherer,
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IsAgent: true,
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}
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opts.Flags = map[string]string{}
|
|
|
|
webHandler := New(nil, opts)
|
|
webHandler.SetReady(true)
|
|
webHandler.config = &config.Config{}
|
|
webHandler.notifier = ¬ifier.Manager{}
|
|
l, err := webHandler.Listener()
|
|
if err != nil {
|
|
panic(fmt.Sprintf("Unable to start web listener: %s", err))
|
|
}
|
|
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
go func() {
|
|
err := webHandler.Run(ctx, l, "")
|
|
if err != nil {
|
|
panic(fmt.Sprintf("Can't start web handler:%s", err))
|
|
}
|
|
}()
|
|
|
|
// Give some time for the web goroutine to run since we need the server
|
|
// to be up before starting tests.
|
|
time.Sleep(5 * time.Second)
|
|
baseURL := "http://localhost" + port + "/api/v1"
|
|
|
|
// Test for non-available endpoints in the Agent mode.
|
|
for path, methods := range map[string][]string{
|
|
"/labels": {http.MethodGet, http.MethodPost},
|
|
"/label/:name/values": {http.MethodGet},
|
|
"/series": {http.MethodGet, http.MethodPost, http.MethodDelete},
|
|
"/alertmanagers": {http.MethodGet},
|
|
"/query": {http.MethodGet, http.MethodPost},
|
|
"/query_range": {http.MethodGet, http.MethodPost},
|
|
"/query_exemplars": {http.MethodGet, http.MethodPost},
|
|
"/status/tsdb": {http.MethodGet},
|
|
"/alerts": {http.MethodGet},
|
|
"/rules": {http.MethodGet},
|
|
"/admin/tsdb/delete_series": {http.MethodPost, http.MethodPut},
|
|
"/admin/tsdb/clean_tombstones": {http.MethodPost, http.MethodPut},
|
|
"/admin/tsdb/snapshot": {http.MethodPost, http.MethodPut},
|
|
} {
|
|
for _, m := range methods {
|
|
req, err := http.NewRequest(m, baseURL+path, nil)
|
|
require.NoError(t, err)
|
|
resp, err := http.DefaultClient.Do(req)
|
|
require.NoError(t, err)
|
|
require.Equal(t, http.StatusUnprocessableEntity, resp.StatusCode)
|
|
}
|
|
}
|
|
|
|
// Test for some of available endpoints in the Agent mode.
|
|
for path, methods := range map[string][]string{
|
|
"/targets": {http.MethodGet},
|
|
"/targets/metadata": {http.MethodGet},
|
|
"/metadata": {http.MethodGet},
|
|
"/status/config": {http.MethodGet},
|
|
"/status/runtimeinfo": {http.MethodGet},
|
|
"/status/flags": {http.MethodGet},
|
|
} {
|
|
for _, m := range methods {
|
|
req, err := http.NewRequest(m, baseURL+path, nil)
|
|
require.NoError(t, err)
|
|
resp, err := http.DefaultClient.Do(req)
|
|
require.NoError(t, err)
|
|
require.Equal(t, http.StatusOK, resp.StatusCode)
|
|
}
|
|
}
|
|
}
|
|
|
|
func cleanupTestResponse(t *testing.T, resp *http.Response) {
|
|
_, err := io.Copy(io.Discard, resp.Body)
|
|
require.NoError(t, err)
|
|
require.NoError(t, resp.Body.Close())
|
|
}
|
|
|
|
func cleanupSnapshot(t *testing.T, dbDir string, resp *http.Response) {
|
|
snapshot := &struct {
|
|
Data struct {
|
|
Name string `json:"name"`
|
|
} `json:"data"`
|
|
}{}
|
|
b, err := io.ReadAll(resp.Body)
|
|
require.NoError(t, err)
|
|
require.NoError(t, json.Unmarshal(b, snapshot))
|
|
require.NotZero(t, snapshot.Data.Name, "snapshot directory not returned")
|
|
require.NoError(t, os.Remove(filepath.Join(dbDir, "snapshots", snapshot.Data.Name)))
|
|
require.NoError(t, os.Remove(filepath.Join(dbDir, "snapshots")))
|
|
}
|