mirror of https://github.com/prometheus/prometheus
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
148 lines
3.3 KiB
148 lines
3.3 KiB
// Copyright 2013 Prometheus Team
|
|
// 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 rules
|
|
|
|
import (
|
|
"log"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/prometheus/client_golang/extraction"
|
|
clientmodel "github.com/prometheus/client_golang/model"
|
|
|
|
"github.com/prometheus/prometheus/config"
|
|
"github.com/prometheus/prometheus/storage/metric"
|
|
)
|
|
|
|
type RuleManager interface {
|
|
// Load and add rules from rule files specified in the configuration.
|
|
AddRulesFromConfig(config config.Config) error
|
|
// Start the rule manager's periodic rule evaluation.
|
|
Run()
|
|
// Stop the rule manager's rule evaluation cycles.
|
|
Stop()
|
|
// Return all rules.
|
|
Rules() []Rule
|
|
// Return all alerting rules.
|
|
AlertingRules() []*AlertingRule
|
|
}
|
|
|
|
type ruleManager struct {
|
|
// Protects the rules list.
|
|
sync.Mutex
|
|
rules []Rule
|
|
|
|
results chan<- *extraction.Result
|
|
done chan bool
|
|
interval time.Duration
|
|
storage *metric.TieredStorage
|
|
}
|
|
|
|
func NewRuleManager(results chan<- *extraction.Result, interval time.Duration, storage *metric.TieredStorage) RuleManager {
|
|
manager := &ruleManager{
|
|
results: results,
|
|
rules: []Rule{},
|
|
done: make(chan bool),
|
|
interval: interval,
|
|
storage: storage,
|
|
}
|
|
return manager
|
|
}
|
|
|
|
func (m *ruleManager) Run() {
|
|
ticker := time.NewTicker(m.interval)
|
|
defer ticker.Stop()
|
|
|
|
for {
|
|
select {
|
|
case <-ticker.C:
|
|
start := time.Now()
|
|
m.runIteration(m.results)
|
|
evalDurations.Add(map[string]string{intervalKey: m.interval.String()}, float64(time.Since(start)/time.Millisecond))
|
|
case <-m.done:
|
|
log.Printf("RuleManager exiting...")
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
func (m *ruleManager) Stop() {
|
|
select {
|
|
case m.done <- true:
|
|
default:
|
|
}
|
|
}
|
|
|
|
func (m *ruleManager) runIteration(results chan<- *extraction.Result) {
|
|
now := time.Now()
|
|
wg := sync.WaitGroup{}
|
|
|
|
m.Lock()
|
|
rules := make([]Rule, len(m.rules))
|
|
copy(rules, m.rules)
|
|
m.Unlock()
|
|
|
|
for _, rule := range rules {
|
|
wg.Add(1)
|
|
// BUG(julius): Look at fixing thundering herd.
|
|
go func(rule Rule) {
|
|
defer wg.Done()
|
|
vector, err := rule.Eval(now, m.storage)
|
|
samples := make(clientmodel.Samples, len(vector))
|
|
copy(samples, vector)
|
|
m.results <- &extraction.Result{
|
|
Samples: samples,
|
|
Err: err,
|
|
}
|
|
}(rule)
|
|
}
|
|
|
|
wg.Wait()
|
|
}
|
|
|
|
func (m *ruleManager) AddRulesFromConfig(config config.Config) error {
|
|
for _, ruleFile := range config.Global.RuleFile {
|
|
newRules, err := LoadRulesFromFile(ruleFile)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
m.Lock()
|
|
m.rules = append(m.rules, newRules...)
|
|
m.Unlock()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *ruleManager) Rules() []Rule {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
|
|
rules := make([]Rule, len(m.rules))
|
|
copy(rules, m.rules)
|
|
return rules
|
|
}
|
|
|
|
func (m *ruleManager) AlertingRules() []*AlertingRule {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
|
|
alerts := []*AlertingRule{}
|
|
for _, rule := range m.rules {
|
|
if alertingRule, ok := rule.(*AlertingRule); ok {
|
|
alerts = append(alerts, alertingRule)
|
|
}
|
|
}
|
|
return alerts
|
|
}
|