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Prom v2 See merge request cloudcare-tools/datakit!3241
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| // Unless explicitly stated otherwise all files in this repository are licensed | ||
| // under the MIT License. | ||
| // This product includes software developed at Guance Cloud (https://www.guance.com/). | ||
| // Copyright 2021-present Guance, Inc. | ||
|
|
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| package promv2 | ||
|
|
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| const sampleConfig = ` | ||
| [[inputs.promv2]] | ||
| ## Collector alias. | ||
| source = "prom" | ||
| urls = ["http://127.0.0.1:9100/metrics", "http://127.0.0.1:9200/metrics"] | ||
| ## (Optional) Collect interval: (defaults to "30s"). | ||
| interval = "30s" | ||
| ## Measurement name. | ||
| ## If measurement_name is empty, split metric name by '_', the first field after split as measurement set name, the rest as current metric name. | ||
| ## If measurement_name is not empty, using this as measurement set name. | ||
| measurement_name = "" | ||
| ## Keep Exist Metric Name | ||
| ## If the keep_exist_metric_name is true, keep the raw value for field names. | ||
| keep_exist_metric_name = false | ||
| ## TLS config | ||
| # insecure_skip_verify = true | ||
| ## Following ca_certs/cert/cert_key are optional, if insecure_skip_verify = true. | ||
| # ca_certs = ["/opt/tls/ca.crt"] | ||
| # cert = "/opt/tls/client.root.crt" | ||
| # cert_key = "/opt/tls/client.root.key" | ||
| ## Set to 'true' to enable election. | ||
| election = true | ||
| ## Add HTTP headers to data pulling (Example basic authentication). | ||
| # [inputs.promv2.http_headers] | ||
| # Authorization = "" | ||
| [inputs.promv2.tags] | ||
| # some_tag = "some_value" | ||
| # more_tag = "some_other_value" | ||
| ` |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,238 @@ | ||
| // Unless explicitly stated otherwise all files in this repository are licensed | ||
| // under the MIT License. | ||
| // This product includes software developed at Guance Cloud (https://www.guance.com/). | ||
| // Copyright 2021-present Guance, Inc. | ||
|
|
||
| // Package promv2 scrape prometheus exporter metrics. | ||
| package promv2 | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net/url" | ||
| "time" | ||
|
|
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| "github.com/GuanceCloud/cliutils/logger" | ||
| "github.com/GuanceCloud/cliutils/point" | ||
|
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| "gitlab.jiagouyun.com/cloudcare-tools/datakit/internal/datakit" | ||
| dkio "gitlab.jiagouyun.com/cloudcare-tools/datakit/internal/io" | ||
| dknet "gitlab.jiagouyun.com/cloudcare-tools/datakit/internal/net" | ||
| "gitlab.jiagouyun.com/cloudcare-tools/datakit/internal/plugins/inputs" | ||
| "gitlab.jiagouyun.com/cloudcare-tools/datakit/internal/promscrape" | ||
| ) | ||
|
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| var _ inputs.ElectionInput = (*Input)(nil) | ||
|
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| const ( | ||
| inputName = "promv2" | ||
| ) | ||
|
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| type Input struct { | ||
| Source string `toml:"source"` | ||
| MeasurementName string `toml:"measurement_name"` | ||
|
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| URL string `toml:"url"` | ||
| endpoint *url.URL // parsed URL | ||
|
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| KeepExistMetricName bool `toml:"keep_exist_metric_name"` | ||
| DisableInstanceTag bool `toml:"disable_instance_tag"` | ||
|
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| dknet.TLSClientConfig | ||
|
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| HTTPHeaders map[string]string `toml:"http_headers"` | ||
| Tags map[string]string `toml:"tags"` | ||
|
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| Interval time.Duration `toml:"interval"` | ||
| Election bool `toml:"election"` | ||
|
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| chPause chan bool | ||
| pause bool | ||
|
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| Feeder dkio.Feeder | ||
| Tagger datakit.GlobalTagger | ||
|
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| lastStart time.Time | ||
|
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| scraper *promscrape.PromScraper | ||
| count int | ||
| log *logger.Logger | ||
| } | ||
|
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| func (*Input) SampleConfig() string { return sampleConfig } | ||
|
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| func (*Input) SampleMeasurement() []inputs.Measurement { return nil } | ||
|
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| func (*Input) AvailableArchs() []string { return datakit.AllOSWithElection } | ||
|
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| func (*Input) Catalog() string { return "prom" } | ||
|
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| func (ipt *Input) ElectionEnabled() bool { | ||
| return ipt.Election | ||
| } | ||
|
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| func (ipt *Input) Run() { | ||
| ipt.log = logger.SLogger(inputName + "/" + ipt.Source) | ||
| ipt.log.Info("start") | ||
|
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| if err := ipt.setup(); err != nil { | ||
| ipt.log.Infof("init failure: %s", err) | ||
| ipt.log.Info("exit") | ||
| return | ||
| } | ||
|
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| tick := time.NewTicker(ipt.Interval) | ||
| defer tick.Stop() | ||
|
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| for { | ||
| if !ipt.pause { | ||
| ipt.scrape() | ||
| } | ||
|
|
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| select { | ||
| case <-datakit.Exit.Wait(): | ||
| ipt.log.Info("prom exit") | ||
| return | ||
| case ipt.pause = <-ipt.chPause: | ||
| // nil | ||
| case <-tick.C: | ||
| // next | ||
| } | ||
| } | ||
| } | ||
|
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| func (ipt *Input) setup() error { | ||
| // parse url | ||
| u, err := url.Parse(ipt.URL) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| ipt.endpoint = u | ||
|
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| tags := make(map[string]string) | ||
|
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| // on production, ipt.Tagger is empty, but we may add testing tagger here. | ||
| var globalTags map[string]string | ||
| if ipt.Election { | ||
| globalTags = ipt.Tagger.ElectionTags() | ||
| ipt.log.Infof("add global election tags %q", globalTags) | ||
| } else { | ||
| globalTags = ipt.Tagger.HostTags() | ||
| ipt.log.Infof("add global host tags %q", globalTags) | ||
| } | ||
|
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| mergedTags := inputs.MergeTags(globalTags, ipt.Tags, ipt.URL) | ||
| for k, v := range mergedTags { | ||
| tags[k] = v | ||
| } | ||
|
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| // set instance tag. | ||
| // The `instance' tag should not override. | ||
| if !ipt.DisableInstanceTag { | ||
| if _, ok := mergedTags["instance"]; !ok { | ||
| tags["instance"] = u.Host | ||
| } | ||
| } | ||
|
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| opts := []promscrape.Option{ | ||
| promscrape.WithSource("promv2/" + ipt.Source), | ||
| promscrape.WithMeasurement(ipt.MeasurementName), | ||
| promscrape.WithExtraTags(tags), | ||
| promscrape.KeepExistMetricName(ipt.KeepExistMetricName), | ||
| promscrape.WithCallback(ipt.callback), | ||
| } | ||
|
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| if len(ipt.CaCerts) != 0 || | ||
| ipt.CertKey != "" || | ||
| ipt.Cert != "" || | ||
| ipt.InsecureSkipVerify { | ||
| opts = append(opts, | ||
| promscrape.WithTLSOpen(true), | ||
| promscrape.WithCacertFiles(ipt.CaCerts), | ||
| promscrape.WithCertFile(ipt.Cert), | ||
| promscrape.WithKeyFile(ipt.CertKey), | ||
| promscrape.WithInsecureSkipVerify(ipt.InsecureSkipVerify), | ||
| ) | ||
| } | ||
|
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| ps, err := promscrape.NewPromScraper(opts...) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| ipt.scraper = ps | ||
|
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| return nil | ||
| } | ||
|
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| func (ipt *Input) scrape() { | ||
| ipt.lastStart = time.Now() | ||
| // reset count | ||
| ipt.count = 0 | ||
|
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| if err := ipt.scraper.ScrapeURL(ipt.URL); err != nil { | ||
| ipt.log.Warn(err) | ||
| } | ||
|
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| scrapeTotal.WithLabelValues(ipt.Source, | ||
| fmt.Sprintf(":%s%s", ipt.endpoint.Port(), ipt.endpoint.Path)).Observe(float64(ipt.count)) | ||
| } | ||
|
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| func (ipt *Input) callback(pts []*point.Point) error { | ||
| if len(pts) == 0 { | ||
| return nil | ||
| } | ||
|
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| cost := time.Since(ipt.lastStart) | ||
|
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| if err := ipt.Feeder.FeedV2( | ||
| point.Metric, | ||
| pts, | ||
| dkio.WithCollectCost(cost), | ||
| dkio.WithInputName(inputName+"/"+ipt.Source), | ||
| dkio.WithElection(ipt.Election), | ||
| ); err != nil { | ||
| ipt.log.Warnf("failed to feed prom metrics: %s", err) | ||
| } | ||
| ipt.count += len(pts) | ||
|
|
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| return nil | ||
| } | ||
|
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| func (ipt *Input) Pause() error { | ||
| tick := time.NewTicker(inputs.ElectionPauseTimeout) | ||
| select { | ||
| case ipt.chPause <- true: | ||
| return nil | ||
| case <-tick.C: | ||
| return fmt.Errorf("pause %s failed", inputName) | ||
| } | ||
| } | ||
|
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| func (ipt *Input) Resume() error { | ||
| tick := time.NewTicker(inputs.ElectionResumeTimeout) | ||
| select { | ||
| case ipt.chPause <- false: | ||
| return nil | ||
| case <-tick.C: | ||
| return fmt.Errorf("resume %s failed", inputName) | ||
| } | ||
| } | ||
|
|
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| func newProm() *Input { | ||
| return &Input{ | ||
| Source: "not-set", | ||
| pause: false, | ||
| chPause: make(chan bool, inputs.ElectionPauseChannelLength), | ||
| Tags: make(map[string]string), | ||
| Feeder: dkio.DefaultFeeder(), | ||
| Tagger: datakit.DefaultGlobalTagger(), | ||
| Interval: time.Second * 30, | ||
| } | ||
| } | ||
|
|
||
| func init() { //nolint:gochecknoinits | ||
| setupMetrics() | ||
| inputs.Add(inputName, func() inputs.Input { | ||
| return newProm() | ||
| }) | ||
| } |
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