prometheus/retrieval/scrape.go

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// Copyright 2016 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package retrieval
// import (
// "sync"
// "time"
// "github.com/prometheus/common/log"
// "github.com/prometheus/common/model"
// "golang.org/x/net/context"
// "github.com/prometheus/prometheus/config"
// "github.com/prometheus/prometheus/storage"
// )
// type scraper interface {
// scrape(context.Context) error
// report(start time.Time, dur time.Duration, err error) error
// }
// type scrapePool struct {
// mtx sync.RWMutex
// targets map[model.Fingerprint]*Target
// loops map[model.Fingerprint]loop
// config *config.ScrapeConfig
// newLoop func(context.Context)
// }
// func newScrapePool(c *config.ScrapeConfig) *scrapePool {
// return &scrapePool{config: c}
// }
// func (sp *scrapePool) sync(targets []*Target) {
// sp.mtx.Lock()
// defer sp.mtx.Unlock()
// uniqueTargets := make(map[string]*Target{}, len(targets))
// for _, t := range targets {
// uniqueTargets[t.fingerprint()] = t
// }
// sp.targets = uniqueTargets
// }
// type scrapeLoop struct {
// scraper scraper
// mtx sync.RWMutex
// }
// func newScrapeLoop(ctx context.Context)
// func (sl *scrapeLoop) update() {}
// func (sl *scrapeLoop) run(ctx context.Context) {
// var wg sync.WaitGroup
// wg.Wait()
// }
// func (sl *scrapeLoop) stop() {
// }