stellar/go horizon-v2.9.0

Horizon v2.9.0

on GitHub

Upgrading to this version from <= v2.8.3 will trigger a state rebuild. During this process (which will take at least 10 minutes), Horizon will not ingest new ledgers.

Protocol 18 support: This release adds support for Protocol 18 (CAP 38: Automated Market Makers).

DB Schema Migration

• This release comes with a DB migration removing offer_id field from history_trades table and adding new tables related to AMM. It should not take more than 15 minutes to complete the migration.

Breaking changes

• There are multiple breaking changes that will activate on Protocol 18 upgrade. Please check the Horizon Liquidity Pool API doc or the Apiary Mock for more information. Please upgrade to the latest SDKs that are backward compatible.
• The --ingest flag is set by default. If --captive-core-config-path is not set, the config file is generated based on network passhprase (3783).

Changes

• CAP 38: Automated Market Makers) support. All the API changes have been outlined in Horizon Liquidity Pool API doc.
• Update /paths endpoint to take liquidity pools into account when searching for possible routes between assets (3818).
• Multiple performance improvements in /paths: 3816, 3965, 3933.
• Requests to /paths are now cancelled, respecting --connection-timeout flag value (3081).
• Multiple performance improvements to state ingestion processors: 3945, 3956, 3963, 3953, 3944.
• Add missing tx result codes in txsub (3866).
• Add new metric ProcessorsRunDurationSummary, old ProcessorsRunDuration is deprecated (3940).
• Logs during state ingesiton now display progress value which is percentage progress indicator (3946).