Make the chain indexer reorg safe #52#76
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Lakes41 merged 3 commits intoJun 29, 2026
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- Added `ProcessedEvent` and `IndexerState` models for reorg safety and idempotency. - Enhanced `applyContractEvent` with idempotency checks and event logging. - Implemented `IndexerWorker` with configurable finality window and reorg detection logic. - Updated configuration and environment examples. - Added comprehensive unit tests for `IndexerWorker`. Co-authored-by: clintjeff2 <119521983+clintjeff2@users.noreply.github.com>
…fe-#52-6229560644847801002 Make the chain indexer reorg-safe
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This PR implements the reorg-safe chain indexer as requested in issue #52.
Changes:
tokenIdtoMembership, and new modelsProcessedEventandIndexerState.applyContractEventnow usestransactionHashandlogIndexto ensure each event is processed exactly once.INDEXER_FINALITY_WINDOW. It detects chain reorganizations by verifying the hash of the last processed block and handles them by rewinding the checkpoint.INDEXER_INTERVAL_MSandINDEXER_FINALITY_WINDOWsettings.indexerWorker.test.tscovering block scanning, reorg detection/rewind, and idempotency.The
IndexerWorkeris wired up inindex.tswith a stub provider, ready for injection of a real RPC provider.Closes #52