# Alertmanager Configuration for Mana
# Sends alerts via webhook to custom notification handler

global:
  resolve_timeout: 5m

route:
  # Default receiver for all alerts
  receiver: 'webhook'
  # Group alerts by severity and service
  group_by: ['alertname', 'severity', 'job']
  # Wait before sending first notification
  group_wait: 30s
  # Wait before sending follow-up notifications for same group
  group_interval: 5m
  # Wait before re-sending resolved alerts
  repeat_interval: 4h

  routes:
    # Critical alerts - immediate notification
    - match:
        severity: critical
      receiver: 'webhook'
      group_wait: 10s
      repeat_interval: 1h

    # Warning alerts - less frequent
    - match:
        severity: warning
      receiver: 'webhook'
      group_wait: 1m
      repeat_interval: 6h

    # Info alerts - only during business hours, batch together
    - match:
        severity: info
      receiver: 'webhook'
      group_wait: 5m
      repeat_interval: 24h

receivers:
  - name: 'webhook'
    webhook_configs:
      - url: 'http://alert-notifier:8080/webhook'
        send_resolved: true
        max_alerts: 10

# Inhibition rules - prevent redundant alerts
inhibit_rules:
  # Don't alert on warnings if critical is firing for same service
  - source_match:
      severity: 'critical'
    target_match:
      severity: 'warning'
    equal: ['alertname', 'job']

  # Don't alert on service-specific issues if PostgreSQL is down
  - source_match:
      alertname: 'PostgreSQLDown'
    target_match_re:
      alertname: '.*(Backend|Service).*'
    equal: []