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add thanos query frontend sub command
Signed-off-by: Ben Ye <yb532204897@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,174 @@ | ||
| // Copyright (c) The Thanos Authors. | ||
| // Licensed under the Apache License 2.0. | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "time" | ||
|
|
||
| "github.com/cortexproject/cortex/pkg/querier/frontend" | ||
| "github.com/cortexproject/cortex/pkg/querier/queryrange" | ||
| "github.com/go-kit/kit/log" | ||
| "github.com/oklog/run" | ||
| "github.com/opentracing/opentracing-go" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/common/route" | ||
| "gopkg.in/alecthomas/kingpin.v2" | ||
|
|
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| v1 "github.com/thanos-io/thanos/pkg/api/queryfrontend" | ||
| "github.com/thanos-io/thanos/pkg/component" | ||
| "github.com/thanos-io/thanos/pkg/extprom" | ||
| "github.com/thanos-io/thanos/pkg/prober" | ||
| "github.com/thanos-io/thanos/pkg/queryfrontend" | ||
| httpserver "github.com/thanos-io/thanos/pkg/server/http" | ||
| ) | ||
|
|
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| type queryFrontendConfig struct { | ||
| http httpConfig | ||
| queryRangeConfig queryRangeConfig | ||
|
|
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| // TODO(yeya24): use this after promql engine is added | ||
| defaultEvaluationInterval time.Duration | ||
| downstreamURL string | ||
| compressResponses bool | ||
| } | ||
|
|
||
| type queryRangeConfig struct { | ||
| respCacheConfig responseCacheConfig | ||
| cacheResults bool | ||
| splitInterval time.Duration | ||
| disableStepAlign bool | ||
| maxRetries int | ||
| maxQueryParallelism int | ||
| maxQueryLength time.Duration | ||
| } | ||
|
|
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| type responseCacheConfig struct { | ||
| cacheMaxFreshness time.Duration | ||
| } | ||
|
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| func (c *responseCacheConfig) registerFlag(cmd *kingpin.CmdClause) { | ||
| cmd.Flag("query-range.response-cache-max-freshness", "Most recent allowed cacheable result per-tenant, to prevent caching very recent results that might still be in flux."). | ||
| Default("1m").DurationVar(&c.cacheMaxFreshness) | ||
| } | ||
|
|
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| func (c *queryRangeConfig) registerFlag(cmd *kingpin.CmdClause) { | ||
| c.respCacheConfig.registerFlag(cmd) | ||
|
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| cmd.Flag("query-range.cache-results", "Cache query range results.").Default("false"). | ||
| BoolVar(&c.cacheResults) | ||
|
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| cmd.Flag("query-range.split-interval", "Split queries by an interval and execute in parallel, 0 disables it."). | ||
| Default("24h").DurationVar(&c.splitInterval) | ||
|
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| cmd.Flag("query-range.max-retries-per-request", "Maximum number of retries for a single request; beyond this, the downstream error is returned."). | ||
| Default("5").IntVar(&c.maxRetries) | ||
|
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| cmd.Flag("query-range.disable-step-align", "Disable aligning incoming queries' start and end with their step."). | ||
| Default("true").BoolVar(&c.disableStepAlign) | ||
| } | ||
|
|
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| func (c *queryFrontendConfig) registerFlag(cmd *kingpin.CmdClause) { | ||
| c.queryRangeConfig.registerFlag(cmd) | ||
| c.http.registerFlag(cmd) | ||
|
|
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| cmd.Flag("query.default-evaluation-interval", "Set default evaluation interval for sub queries."). | ||
| Default("1m").DurationVar(&c.defaultEvaluationInterval) | ||
|
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| cmd.Flag("query-frontend.downstream-url", "URL of downstream Prometheus Query compatible API."). | ||
| Default("http://localhost:9090").StringVar(&c.downstreamURL) | ||
|
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| cmd.Flag("query-frontend.compress-responses", "Compress HTTP responses."). | ||
| Default("false").BoolVar(&c.compressResponses) | ||
| } | ||
|
|
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| func registerQueryFrontend(m map[string]setupFunc, app *kingpin.Application) { | ||
| comp := component.QueryFrontend | ||
| cmd := app.Command(comp.String(), "query frontend") | ||
| conf := &queryFrontendConfig{} | ||
| conf.registerFlag(cmd) | ||
|
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| m[comp.String()] = func(g *run.Group, logger log.Logger, reg *prometheus.Registry, _ opentracing.Tracer, _ <-chan struct{}, _ bool) error { | ||
|
|
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| return runQueryFrontend( | ||
| g, | ||
| logger, | ||
| reg, | ||
| conf, | ||
| comp, | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| func runQueryFrontend( | ||
| g *run.Group, | ||
| logger log.Logger, | ||
| reg *prometheus.Registry, | ||
| conf *queryFrontendConfig, | ||
| comp component.Component, | ||
| ) error { | ||
|
|
||
| fe, err := frontend.New(frontend.Config{ | ||
| DownstreamURL: conf.downstreamURL, | ||
| CompressResponses: conf.compressResponses, | ||
| }, logger, reg) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| limiter := queryfrontend.NewLimiter( | ||
| conf.queryRangeConfig.maxQueryParallelism, | ||
| conf.queryRangeConfig.maxQueryLength, | ||
| conf.queryRangeConfig.respCacheConfig.cacheMaxFreshness, | ||
| ) | ||
|
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| tripperWare, err := queryfrontend.NewTripperWare( | ||
| limiter, | ||
| queryrange.PrometheusCodec, | ||
| queryrange.PrometheusResponseExtractor{}, | ||
| conf.queryRangeConfig.disableStepAlign, | ||
| conf.queryRangeConfig.cacheResults, | ||
| conf.queryRangeConfig.splitInterval, | ||
| conf.queryRangeConfig.maxRetries, | ||
| reg, | ||
| logger, | ||
| ) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| fe.Wrap(tripperWare) | ||
|
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| httpProbe := prober.NewHTTP() | ||
| statusProber := prober.Combine( | ||
| httpProbe, | ||
| prober.NewInstrumentation(comp, logger, extprom.WrapRegistererWithPrefix("thanos_", reg)), | ||
| ) | ||
|
|
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| // Start metrics HTTP server. | ||
| { | ||
| router := route.New() | ||
|
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| api := v1.NewAPI(logger) | ||
| api.Register(router.WithPrefix("/api/v1"), fe.Handler().ServeHTTP) | ||
|
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| srv := httpserver.New(logger, reg, comp, httpProbe, | ||
| httpserver.WithListen(conf.http.bindAddress), | ||
| httpserver.WithGracePeriod(time.Duration(conf.http.gracePeriod)), | ||
| ) | ||
| srv.Handle("/", router) | ||
|
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| g.Add(func() error { | ||
| statusProber.Healthy() | ||
|
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| return srv.ListenAndServe() | ||
| }, func(err error) { | ||
| statusProber.NotReady(err) | ||
| defer statusProber.NotHealthy(err) | ||
|
|
||
| srv.Shutdown(err) | ||
| }) | ||
| } | ||
|
|
||
| return nil | ||
| } |
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