stellar/go horizon-v1.8.0

Horizon 1.8.0

on GitHub

Changes

• Added new and changed existing metrics:
  • horizon_build_info - contains build information in labels (version - Horizon version, goversion - Go runtime version),
  • horizon_ingest_enable - equals 1 if ingestion system is running, 0 otherwise,
  • horizon_ingest_state_invalid - equals 1 if state is invalid, 0 otherwise,
  • horizon_db_max_open_connections - determines the maximum possible opened DB connections,
  • horizon_db_wait_duration_seconds_total - changed the values to be in seconds instead of nanoseconds.
• Fixed a data race when shutting down the HTTP server. (#2958).
• Fixed emitting incorrect errors related to OrderBook Stream when shutting down the app. (#2964)

Experimental

The previous implementation of Captive Stellar-Core streams meta stream using a filesystem pipe. This implies that both Horizon and Stellar-Core had to be deployed to the same server. One of the disadvantages of such requirement is a need for detailed per-process monitoring to be able to connect potential issues (like memory leaks) to the specific service.

To solve this it's now possible to start a captivecore on another machine and configure Horizon to use it in ingestion. This requires two config options set:

• ENABLE_CAPTIVE_CORE_INGESTION=true,
• REMOTE_CAPTIVE_CORE_URL - pointing to captivecore server.