# Prometheus Alerting Rules for AS4 Settlement

groups:
  - name: as4_settlement
    interval: 30s
    rules:
      # High Latency Alert
      - alert: AS4HighLatency
        expr: as4_message_latency_p99 > 5
        for: 5m
        labels:
          severity: warning
        annotations:
          summary: "AS4 message processing latency is high"
          description: "P99 latency is {{ $value }}s (threshold: 5s)"

      # High Failure Rate Alert
      - alert: AS4HighFailureRate
        expr: rate(as4_instructions_failed[5m]) > 0.01
        for: 5m
        labels:
          severity: critical
        annotations:
          summary: "AS4 instruction failure rate is high"
          description: "Failure rate is {{ $value }} (threshold: 1%)"

      # Certificate Expiring Alert
      - alert: AS4CertificateExpiring
        expr: as4_certificate_days_until_expiry < 30
        for: 1h
        labels:
          severity: warning
        annotations:
          summary: "AS4 certificate expiring soon"
          description: "Certificate expires in {{ $value }} days"

      # System Unavailable Alert
      - alert: AS4SystemUnavailable
        expr: up{job="as4-settlement"} == 0
        for: 1m
        labels:
          severity: critical
        annotations:
          summary: "AS4 Settlement system is down"
          description: "AS4 service is not responding"

      # Database Connection Alert
      - alert: AS4DatabaseConnectionFailed
        expr: as4_database_connection_status == 0
        for: 1m
        labels:
          severity: critical
        annotations:
          summary: "AS4 database connection failed"
          description: "Cannot connect to database"

      # Redis Connection Alert
      - alert: AS4RedisConnectionFailed
        expr: as4_redis_connection_status == 0
        for: 1m
        labels:
          severity: warning
        annotations:
          summary: "AS4 Redis connection failed"
          description: "Cannot connect to Redis (nonce tracking may be affected)"

      # High Memory Usage Alert
      - alert: AS4HighMemoryUsage
        expr: as4_memory_usage_percent > 80
        for: 5m
        labels:
          severity: warning
        annotations:
          summary: "AS4 system memory usage is high"
          description: "Memory usage is {{ $value }}%"

      # Queue Backlog Alert
      - alert: AS4QueueBacklog
        expr: as4_instruction_queue_length > 1000
        for: 5m
        labels:
          severity: warning
        annotations:
          summary: "AS4 instruction queue backlog"
          description: "Queue length is {{ $value }} instructions"