Add last processed event log tick to status service

[qubicmio]

What? Why? Who?

To be able to provide the last processed event log tick the status service should check and serve this information.

Acceptance Criteria

• Add logic to the status service to fetch the last processed event log tick from the intermediary storage (redis).
  • Query tick processing status from redis.
  • Check tick processing status in elasticsearch.
  • If number of logs from redis == number of logs in elastic then proceed to next tick.
• Metrics
  • For alert if there is a mismatch (error gauge, 100 errors).
  • Current processed log tick.
  • Last known log tick (from redis).
  • Current latest transaction tick (already there).
• Cache or store the information in the status service.
• Serve the information (use the current status endpoint).

Scope

Status service

Out of Scope

Publisher, consumer, central intermediary storage

Technical Sketch (How?)

See qubic/go-log-data-publisher#25