mirror of
https://github.com/prometheus/prometheus
synced 2024-12-25 07:52:28 +00:00
94 lines
2.4 KiB
Go
94 lines
2.4 KiB
Go
// Copyright 2013 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 retrieval
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import (
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"container/heap"
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"github.com/prometheus/prometheus/config"
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"github.com/prometheus/prometheus/model"
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"github.com/prometheus/prometheus/retrieval/format"
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"log"
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"time"
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)
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type TargetManager interface {
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acquire()
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release()
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Add(t Target)
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Remove(t Target)
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AddTargetsFromConfig(config *config.Config)
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}
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type targetManager struct {
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requestAllowance chan bool
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pools map[time.Duration]*TargetPool
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results chan format.Result
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}
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func NewTargetManager(results chan format.Result, requestAllowance int) TargetManager {
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return &targetManager{
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requestAllowance: make(chan bool, requestAllowance),
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results: results,
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pools: make(map[time.Duration]*TargetPool),
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}
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}
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func (m *targetManager) acquire() {
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m.requestAllowance <- true
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}
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func (m *targetManager) release() {
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<-m.requestAllowance
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}
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func (m *targetManager) Add(t Target) {
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targetPool, ok := m.pools[t.Interval()]
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if !ok {
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targetPool = NewTargetPool(m)
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log.Printf("Pool %s does not exist; creating and starting...", t.Interval())
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go targetPool.Run(m.results, t.Interval())
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}
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heap.Push(targetPool, t)
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m.pools[t.Interval()] = targetPool
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}
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func (m targetManager) Remove(t Target) {
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panic("not implemented")
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}
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func (m *targetManager) AddTargetsFromConfig(config *config.Config) {
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for _, job := range config.Jobs {
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for _, configTargets := range job.Targets {
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baseLabels := model.LabelSet{
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model.LabelName("job"): model.LabelValue(job.Name),
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}
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for label, value := range configTargets.Labels {
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baseLabels[label] = value
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}
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interval := job.ScrapeInterval
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if interval == 0 {
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interval = config.Global.ScrapeInterval
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}
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for _, endpoint := range configTargets.Endpoints {
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target := NewTarget(endpoint, interval, time.Second*5, baseLabels)
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m.Add(target)
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}
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}
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}
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}
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