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TODO - DLQ Prometheus Metrics + Grafana

Step 1 (done)

Edit indexer/src/metrics/metrics.service.ts to add:

  • indexer_dlq_depth Gauge (label: contract_address)
  • indexer_dlq_events_total Counter (labels: reason, event_type)
  • helper methods for updating/incrementing metrics.

Step 2 (done)

Edit indexer/src/ingestor/dead-letter-queue.service.ts (in-memory DLQ) to:

  • increment indexer_dlq_events_total on enqueue
  • update indexer_dlq_depth on enqueue/clear

Step 3 (done)

Edit indexer/src/ingestor/dlq.service.ts (DB DLQ) to:

  • increment indexer_dlq_events_total on insert
  • update indexer_dlq_depth appropriately when replay is performed (gauge decremented when entries successfully replayed; incremented when added)

Step 4 (done)

Update Grafana dashboards:

  • indexer/grafana/dashboard.json
  • indexer/grafana/indexer-dashboard.json

Add a panel visualizing DLQ depth (indexer_dlq_depth).

Step 5 (pending)

Verify acceptance criteria:

  • GET /metrics includes both new metrics
  • Grafana JSON contains DLQ depth panel