mirror of
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92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
package alerting
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import (
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"time"
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"github.com/grafana/grafana/pkg/bus"
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"github.com/grafana/grafana/pkg/log"
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"github.com/grafana/grafana/pkg/metrics"
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m "github.com/grafana/grafana/pkg/models"
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"github.com/grafana/grafana/pkg/services/annotations"
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)
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type ResultHandler interface {
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Handle(ctx *EvalContext)
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}
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type DefaultResultHandler struct {
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notifier Notifier
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log log.Logger
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}
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func NewResultHandler() *DefaultResultHandler {
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return &DefaultResultHandler{
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log: log.New("alerting.resultHandler"),
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notifier: NewRootNotifier(),
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}
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}
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func (handler *DefaultResultHandler) Handle(ctx *EvalContext) {
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oldState := ctx.Rule.State
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exeuctionError := ""
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if ctx.Error != nil {
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handler.log.Error("Alert Rule Result Error", "ruleId", ctx.Rule.Id, "error", ctx.Error)
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ctx.Rule.State = m.AlertStateExeuctionError
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exeuctionError = ctx.Error.Error()
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} else if ctx.Firing {
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ctx.Rule.State = m.AlertStateType(ctx.Rule.Severity)
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} else {
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ctx.Rule.State = m.AlertStateOK
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}
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countSeverity(ctx.Rule.Severity)
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if ctx.Rule.State != oldState {
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handler.log.Info("New state change", "alertId", ctx.Rule.Id, "newState", ctx.Rule.State, "oldState", oldState)
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cmd := &m.SetAlertStateCommand{
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AlertId: ctx.Rule.Id,
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OrgId: ctx.Rule.OrgId,
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State: ctx.Rule.State,
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Error: exeuctionError,
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}
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if err := bus.Dispatch(cmd); err != nil {
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handler.log.Error("Failed to save state", "error", err)
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}
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// save annotation
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item := annotations.Item{
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OrgId: ctx.Rule.OrgId,
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Type: annotations.AlertType,
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AlertId: ctx.Rule.Id,
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Title: ctx.Rule.Name,
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Text: ctx.GetStateText(),
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NewState: string(ctx.Rule.State),
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PrevState: string(oldState),
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Timestamp: time.Now(),
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}
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annotationRepo := annotations.GetRepository()
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if err := annotationRepo.Save(&item); err != nil {
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handler.log.Error("Failed to save annotation for new alert state", "error", err)
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}
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handler.notifier.Notify(ctx)
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}
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}
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func countSeverity(state m.AlertSeverityType) {
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switch state {
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case m.AlertSeverityOK:
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metrics.M_Alerting_Result_Ok.Inc(1)
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case m.AlertSeverityInfo:
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metrics.M_Alerting_Result_Info.Inc(1)
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case m.AlertSeverityWarning:
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metrics.M_Alerting_Result_Warning.Inc(1)
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case m.AlertSeverityCritical:
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metrics.M_Alerting_Result_Critical.Inc(1)
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}
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}
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