forked from banzaicloud/koperator
/
current_alerts.go
131 lines (114 loc) · 3.27 KB
/
current_alerts.go
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// Copyright © 2019 Banzai Cloud
//
// 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 currentalert
import (
"errors"
"sync"
"github.com/prometheus/common/model"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// CurrentAlerts interface
type CurrentAlerts interface {
AddAlert(AlertState) *currentAlertStruct
AlertGC(AlertState) error
DeleteAlert(model.Fingerprint) error
ListAlerts() map[model.Fingerprint]*currentAlertStruct
HandleAlert(model.Fingerprint, client.Client, int) (*currentAlertStruct, error)
GetRollingUpgradeAlertCount() int
}
// AlertState current alert state
type AlertState struct {
FingerPrint model.Fingerprint
Status model.AlertStatus
Labels model.LabelSet
Annotations model.LabelSet
}
type currentAlerts struct {
lock sync.Mutex
alerts map[model.Fingerprint]*currentAlertStruct
}
type currentAlertStruct struct {
Status model.AlertStatus
Labels model.LabelSet
Annotations model.LabelSet
Processed bool
}
var currAlert *currentAlerts
var once sync.Once
// GetCurrentAlerts get current stored alerts
func GetCurrentAlerts() CurrentAlerts {
once.Do(func() {
currAlert = ¤tAlerts{}
if currAlert.alerts == nil {
currAlert.alerts = make(map[model.Fingerprint]*currentAlertStruct)
}
})
return currAlert
}
func (a *currentAlerts) AddAlert(alert AlertState) *currentAlertStruct {
a.lock.Lock()
defer a.lock.Unlock()
if _, ok := a.alerts[alert.FingerPrint]; !ok {
a.alerts[alert.FingerPrint] = ¤tAlertStruct{
Status: alert.Status,
Labels: alert.Labels,
Annotations: alert.Annotations,
}
}
return a.alerts[alert.FingerPrint]
}
func (a *currentAlerts) ListAlerts() map[model.Fingerprint]*currentAlertStruct {
return a.alerts
}
func (a *currentAlerts) DeleteAlert(alertFp model.Fingerprint) error {
a.lock.Lock()
defer a.lock.Unlock()
delete(a.alerts, alertFp)
return nil
}
func (a *currentAlerts) AlertGC(alert AlertState) error {
if alert.Status == "resolved" {
err := a.DeleteAlert(alert.FingerPrint)
if err != nil {
return err
}
}
return nil
}
func (a *currentAlerts) HandleAlert(alertFp model.Fingerprint, client client.Client, rollingUpgradeAlertCount int) (*currentAlertStruct, error) {
a.lock.Lock()
defer a.lock.Unlock()
if _, ok := a.alerts[alertFp]; !ok {
return ¤tAlertStruct{}, errors.New("alert doesn't exist")
}
if a.alerts[alertFp].Processed != true {
err := examineAlert(a.alerts[alertFp], client, rollingUpgradeAlertCount)
if err != nil {
return nil, err
}
a.alerts[alertFp].Processed = true
}
return a.alerts[alertFp], nil
}
func (a *currentAlerts) GetRollingUpgradeAlertCount() int {
alertCount := 0
for _, alert := range a.alerts {
for key := range alert.Labels {
if key == "rollingupgrade" {
alertCount++
}
}
}
return alertCount
}