apiVersion: monitoring.coreos.com/v1alpha1
kind: AlertmanagerConfig
metadata:
  name: platform-alertmanager
  namespace: observability
  labels:
    observability.hyeonworks.com/instance: home
spec:
  route:
    receiver: platform-slack
    groupBy:
      - cluster
      - namespace
      - alertname
      - severity
    groupWait: 30s
    groupInterval: 5m
    repeatInterval: 4h
    routes:
      - receiver: platform-null
        matchers:
          - name: alertname
            matchType: "="
            value: InfoInhibitor
  inhibitRules:
    - sourceMatch:
        - name: alertname
          matchType: "="
          value: InfoInhibitor
      targetMatch:
        - name: severity
          matchType: "="
          value: info
      equal:
        - namespace
  receivers:
    - name: platform-null
    - name: platform-slack
      slackConfigs:
        - apiURL:
            name: alertmanager-slack-webhook
            key: url
          sendResolved: true
          linkNames: false
          mrkdwnIn:
            - text
            - fields
          fallback: >-
            {{ if eq .Status "firing" }}FIRING{{ else }}RESOLVED{{ end }}: {{ if .CommonLabels.severity }}{{ .CommonLabels.severity | toUpper }}{{ else }}UNKNOWN{{ end }} · {{ .CommonLabels.alertname }}
          title: >-
            {{ if eq .Status "firing" }}[FIRING:{{ .Alerts.Firing | len }}]{{ else }}[RESOLVED]{{ end }} {{ if .CommonLabels.severity }}{{ .CommonLabels.severity | toUpper }}{{ else }}UNKNOWN{{ end }} · {{ .CommonLabels.alertname }}
          titleLink: https://grafana.learn.hyeonworks.com/
          color: >-
            {{ if eq .Status "resolved" }}good{{ else if or (eq .CommonLabels.severity "emergency") (eq .CommonLabels.severity "critical") }}danger{{ else if eq .CommonLabels.severity "warning" }}warning{{ else }}#439FE0{{ end }}
          fields:
            - title: Status
              value: '{{ .Status | toUpper }}'
              short: true
            - title: Severity
              value: '{{ if .CommonLabels.severity }}{{ .CommonLabels.severity | toUpper }}{{ else }}UNKNOWN{{ end }}'
              short: true
            - title: Location
              value: '{{ if .CommonLabels.cluster }}{{ .CommonLabels.cluster }}{{ else }}unknown-cluster{{ end }} / {{ if .CommonLabels.namespace }}{{ .CommonLabels.namespace }}{{ else }}cluster-scoped{{ end }}'
              short: true
            - title: Alert count
              value: '{{ len .Alerts }}'
              short: true
          text: |-
            {{ range .Alerts }}
            *Alert status:* {{ .Status | toUpper }}
            *Target:* {{ $target := .Labels.Remove $.GroupLabels.Names }}{{ if $target }}{{ range $target.SortedPairs }}{{ .Name }}={{ .Value }} {{ end }}{{ else }}unknown{{ end }}
            *Summary:* {{ with .Annotations.summary }}{{ . }}{{ else }}No summary provided{{ end }}
            *Details:* {{ with .Annotations.description }}{{ . }}{{ else }}No description provided{{ end }}
            *Started:* {{ .StartsAt.Format "2006-01-02T15:04:05Z07:00" }}
            {{ if eq .Status "resolved" }}*Ended:* {{ .EndsAt.Format "2006-01-02T15:04:05Z07:00" }}{{ end }}
            {{ with .Annotations.runbook_url }}*Runbook:* <{{ . }}|대응 절차 열기>{{ end }}

            {{ end }}
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          footer: hyeonworks observability · Alertmanager