{{- define "__default_message" -}}
You have {{ len .Alerts.Firing }} firing alert(s), and {{ len .Alerts.Resolved }} resolved alert(s) for {{ .GroupLabels }}

{{ if .Alerts.Firing -}}
({{ len .Alerts.Firing }}) FIRING
-----------
{{ template "__default_alerts_summarize" .Alerts.Firing }}
{{- end }}

{{- if .Alerts.Resolved }}
({{ len .Alerts.Resolved }}) RESOLVED
-------------
{{ template "__default_alerts_summarize" .Alerts.Resolved }}
{{- end }}
Go to the Alerts page: {{ .AlertPageUrl }}
{{- end -}}

{{- define "__default_alerts_summarize" -}}
{{- range . }}
{{- template "__default_alert_labels" . }}
{{- template "__default_alert_annotations" . }}
{{ end }}
{{- end -}}

{{- define "__default_alert_labels" -}}
{{- $labels := .Labels -}}
{{- if index $labels "alertname" }}
Alertname: {{ index .Labels "alertname" -}}
{{ $labels = $labels.Remove (toStrings (list "alertname")) }}
{{- end }}
Labels: {{ template "__default_sorted_pairs" $labels }}
{{- end -}}

{{- define "__default_alert_annotations" -}}
{{- $annotations := .Annotations -}}
{{- if index $annotations "summary" }}
Summary: {{ index .Annotations "summary" -}}
{{- $annotations = $annotations.Remove (toStrings (list "summary")) }}
{{- end -}}
{{- if index $annotations "description" }}
Description: {{ index $annotations "description" -}}
{{- $annotations = $annotations.Remove (toStrings (list "description")) }}
{{- end -}}
{{- if index $annotations "runbook_url" }}
Runbook: {{ index $annotations "runbook_url" -}}
{{- $annotations = $annotations.Remove (toStrings (list "runbook_url")) }}
{{- end -}}
{{- if $annotations }}
Annotations: {{ template "__default_sorted_pairs" $annotations }}
{{- end -}}
{{- end -}}

{{- define "__default_sorted_pairs" -}}
{{ range .SortedPairs }}
 - {{ .Name }} = {{ .Value }}
{{- end }}
{{- end -}}

{{- if .Message -}}
    {{ .Message }}
{{- else -}}
    {{ template "__default_message" . }}
{{- end }}


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