mirror of
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117 lines
2.7 KiB
Go
117 lines
2.7 KiB
Go
package notifiers
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import (
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"context"
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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/models"
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"github.com/grafana/grafana/pkg/services/alerting"
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)
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type NotifierBase struct {
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Name string
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Type string
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Id int64
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IsDeault bool
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UploadImage bool
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SendReminder bool
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Frequency time.Duration
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log log.Logger
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}
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func NewNotifierBase(model *models.AlertNotification) NotifierBase {
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uploadImage := true
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value, exist := model.Settings.CheckGet("uploadImage")
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if exist {
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uploadImage = value.MustBool()
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}
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return NotifierBase{
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Id: model.Id,
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Name: model.Name,
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IsDeault: model.IsDefault,
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Type: model.Type,
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UploadImage: uploadImage,
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SendReminder: model.SendReminder,
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Frequency: model.Frequency,
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log: log.New("alerting.notifier." + model.Name),
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}
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}
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func defaultShouldNotify(context *alerting.EvalContext, sendReminder bool, frequency time.Duration, lastNotify time.Time) bool {
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// Only notify on state change.
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if context.PrevAlertState == context.Rule.State && !sendReminder {
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return false
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}
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// Do not notify if interval has not elapsed
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if sendReminder && !lastNotify.IsZero() && lastNotify.Add(frequency).After(time.Now()) {
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return false
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}
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// Do not notify if alert state if OK or pending even on repeated notify
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if sendReminder && (context.Rule.State == models.AlertStateOK || context.Rule.State == models.AlertStatePending) {
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return false
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}
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// Do not notify when we become OK for the first time.
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if (context.PrevAlertState == models.AlertStatePending) && (context.Rule.State == models.AlertStateOK) {
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return false
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}
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return true
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}
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// ShouldNotify checks this evaluation should send an alert notification
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func (n *NotifierBase) ShouldNotify(ctx context.Context, c *alerting.EvalContext) bool {
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cmd := &models.GetLatestNotificationQuery{
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OrgId: c.Rule.OrgId,
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AlertId: c.Rule.Id,
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NotifierId: n.Id,
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}
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err := bus.DispatchCtx(ctx, cmd)
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if err == models.ErrJournalingNotFound {
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return true
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}
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if err != nil {
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n.log.Error("Could not determine last time alert notifier fired", "Alert name", c.Rule.Name, "Error", err)
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return false
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}
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if !cmd.Result.Success {
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return true
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}
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return defaultShouldNotify(c, n.SendReminder, n.Frequency, time.Unix(cmd.Result.SentAt, 0))
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}
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func (n *NotifierBase) GetType() string {
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return n.Type
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}
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func (n *NotifierBase) NeedsImage() bool {
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return n.UploadImage
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}
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func (n *NotifierBase) GetNotifierId() int64 {
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return n.Id
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}
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func (n *NotifierBase) GetIsDefault() bool {
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return n.IsDeault
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}
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func (n *NotifierBase) GetSendReminder() bool {
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return n.SendReminder
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}
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func (n *NotifierBase) GetFrequency() time.Duration {
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return n.Frequency
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}
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