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0b788b5ce8
* Email notification channel in ngalert Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Use existing templating system Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Update template and add unit tests Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>
93 lines
3.0 KiB
Go
93 lines
3.0 KiB
Go
package channels
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import (
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"context"
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"net/url"
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gokit_log "github.com/go-kit/kit/log"
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"github.com/grafana/grafana/pkg/infra/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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old_notifiers "github.com/grafana/grafana/pkg/services/alerting/notifiers"
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"github.com/grafana/grafana/pkg/util"
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"github.com/grafana/grafana/pkg/bus"
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"github.com/prometheus/alertmanager/notify"
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"github.com/prometheus/alertmanager/template"
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"github.com/prometheus/alertmanager/types"
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"github.com/prometheus/common/model"
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)
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// EmailNotifier is responsible for sending
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// alert notifications over email.
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type EmailNotifier struct {
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old_notifiers.NotifierBase
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Addresses []string
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SingleEmail bool
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log log.Logger
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externalUrl *url.URL
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}
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// NewEmailNotifier is the constructor function
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// for the EmailNotifier.
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func NewEmailNotifier(model *models.AlertNotification) (*EmailNotifier, error) {
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addressesString := model.Settings.Get("addresses").MustString()
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singleEmail := model.Settings.Get("singleEmail").MustBool(false)
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if addressesString == "" {
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return nil, alerting.ValidationError{Reason: "Could not find addresses in settings"}
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}
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// split addresses with a few different ways
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addresses := util.SplitEmails(addressesString)
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// TODO: remove this URL hack and add an actual external URL.
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u, err := url.Parse("http://localhost")
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if err != nil {
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return nil, err
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}
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return &EmailNotifier{
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NotifierBase: old_notifiers.NewNotifierBase(model),
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Addresses: addresses,
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SingleEmail: singleEmail,
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log: log.New("alerting.notifier.email"),
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externalUrl: u,
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}, nil
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}
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// Notify sends the alert notification.
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func (en *EmailNotifier) Notify(ctx context.Context, as ...*types.Alert) error {
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// TODO(codesome): make sure the receiver name is added in the ctx before calling this.
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ctx = notify.WithReceiverName(ctx, "email-notification-channel") // Dummy.
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// TODO(codesome): make sure the group labels is added in the ctx before calling this.
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ctx = notify.WithGroupLabels(ctx, model.LabelSet{}) // Dummy.
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// We only need ExternalURL from this template object. This hack should go away with https://github.com/prometheus/alertmanager/pull/2508.
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data := notify.GetTemplateData(ctx, &template.Template{ExternalURL: en.externalUrl}, as, gokit_log.NewNopLogger())
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cmd := &models.SendEmailCommandSync{
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SendEmailCommand: models.SendEmailCommand{
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Subject: "TODO",
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Data: map[string]interface{}{
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"Title": "TODO",
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"Subject": "TODO",
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"Receiver": data.Receiver,
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"Status": data.Status,
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"Alerts": data.Alerts,
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"GroupLabels": data.GroupLabels,
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"CommonLabels": data.CommonLabels,
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"CommonAnnotations": data.CommonAnnotations,
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"ExternalURL": data.ExternalURL,
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"RuleUrl": "TODO",
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"AlertPageUrl": "TODO",
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},
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To: en.Addresses,
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SingleEmail: en.SingleEmail,
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Template: "ng_alert_notification.html",
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},
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}
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return bus.DispatchCtx(ctx, cmd)
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}
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