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efe61c18fa
``Target`` will be refactored down the road to support various nuanced endpoint types. Thusly incorporating the scheduling behavior within it will be problematic. To that end, the scheduling behavior has been moved into a separate assistance type to improve conciseness and testability. ``make format`` was also run.
95 lines
2.6 KiB
Go
95 lines
2.6 KiB
Go
// Copyright 2012 Prometheus Team
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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 main
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import (
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"code.google.com/p/gorest"
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"fmt"
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"github.com/matttproud/golang_instrumentation"
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"github.com/matttproud/prometheus/api"
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"github.com/matttproud/prometheus/config"
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"github.com/matttproud/prometheus/retrieval"
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"github.com/matttproud/prometheus/rules"
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"github.com/matttproud/prometheus/rules/ast"
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"github.com/matttproud/prometheus/storage/metric/leveldb"
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"log"
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"net/http"
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"os"
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"os/signal"
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)
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func main() {
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configFile := "prometheus.conf"
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conf, err := config.LoadFromFile(configFile)
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if err != nil {
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log.Fatal(fmt.Sprintf("Error loading configuration from %s: %v",
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configFile, err))
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}
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persistence, err := leveldb.NewLevelDBMetricPersistence("/tmp/metrics")
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if err != nil {
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log.Print(err)
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os.Exit(1)
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}
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go func() {
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notifier := make(chan os.Signal)
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signal.Notify(notifier, os.Interrupt)
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<-notifier
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persistence.Close()
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os.Exit(0)
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}()
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defer persistence.Close()
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scrapeResults := make(chan retrieval.Result, 4096)
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targetManager := retrieval.NewTargetManager(scrapeResults, 1)
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targetManager.AddTargetsFromConfig(conf)
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ruleResults := make(chan *rules.Result, 4096)
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ast.SetPersistence(persistence)
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ruleManager := rules.NewRuleManager(ruleResults, conf.Global.EvaluationInterval)
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err = ruleManager.AddRulesFromConfig(conf)
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if err != nil {
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log.Fatal(fmt.Sprintf("Error loading rule files: %v", err))
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}
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go func() {
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gorest.RegisterService(new(api.MetricsService))
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exporter := registry.DefaultRegistry.YieldExporter()
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http.Handle("/", gorest.Handle())
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http.Handle("/metrics.json", exporter)
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http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static"))))
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http.ListenAndServe(":9090", nil)
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}()
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for {
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select {
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case scrapeResult := <-scrapeResults:
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//fmt.Printf("scrapeResult -> %s\n", scrapeResult)
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for _, sample := range scrapeResult.Samples {
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persistence.AppendSample(&sample)
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}
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case ruleResult := <-ruleResults:
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//fmt.Printf("ruleResult -> %s\n", ruleResult)
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for _, sample := range ruleResult.Samples {
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persistence.AppendSample(sample)
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}
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}
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}
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}
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