Test/indexer stellar event poller#349
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ONEONUORA merged 2 commits intoJun 24, 2026
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Description
Closes #301
Overview
This PR implements a resilient, production-ready asynchronous event indexer engine inside backend/src/indexer/worker.rs. The worker is engineered to systematically poll the Soroban RPC endpoint for ledger payment events while executing safety patterns around connection instability and indexing progress continuity.
Changes
Branch: Created and pushed test/indexer-stellar-event-poller.
New Module Implementation: Built the core asynchronous poller infrastructure within backend/src/indexer/worker.rs.
Key Capabilities Integrated:
State-Preserving Ledger Cursor: Tracks processing sequence indexes seamlessly, protecting data ingestion layers against double-processing or gaps during indexer deployment reboots.
Network Fault Resilience: Seamlessly intercepts RPC network connection dropouts or rate-limiting responses via non-blocking exponential backoff logic.
Event Filters: Targets explicit payment event topics to cut down on raw data overhead and streamline downstream event tracking.
Architectural Assertions Validated
All RPC connection interfaces operate cleanly on non-blocking async runtimes.
Thread loops handle error propagation gracefully, bypassing raw thread panics when encountering intermittent network or ledger drops.
Verification & Testing Checklist
[x] Local Execution Pass: Verified poller loops and state cursor manipulation routines pass clean using cargo test.
[x] Fault-Tolerance Evaluation: Simulating RPC node timeouts triggers appropriate delay periods without halting or corrupting local indexer data states.
[x] Workspace Linters: Passed npm run lint and baseline workspace test profiles to clear incoming CI pipelines.
[x] Atomic Deployment: Code checked in using precise conventional commit phrasing and pushed straight to origin.