feat(indexer): graceful shutdown on SIGINT/SIGTERM#11442
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Wire OS signals (Ctrl+C and SIGTERM) into the existing CancellationToken-based graceful shutdown of the data ingestion executor and JSON-RPC server. Previously the binary exited immediately, which could interrupt in-flight checkpoints mid-write. A single master CancellationToken is created in main and threaded into both Indexer::start_writer_with_config (already accepted one) and Indexer::start_reader (new parameter, forwarded into build_json_rpc_server, replacing the token that function used to construct internally). Mirrors the signal-handler pattern in iota-data-ingestion's main. Closes #8819.
iota-ci
added
infrastructure
sergiupopescu199
approved these changes
May 7, 2026
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Description of change
Wire OS signals (Ctrl+C and SIGTERM) into the existing CancellationToken-based graceful shutdown of the data ingestion executor and JSON-RPC server. Previously the binary exited immediately, which could interrupt in-flight checkpoints mid-write.
A single master CancellationToken is created in main and threaded into both Indexer::start_writer_with_config (already accepted one) and Indexer::start_reader (new parameter, forwarded into build_json_rpc_server, replacing the token that function used to construct internally).
Mirrors the signal-handler pattern in iota-data-ingestion's main.
Links to any relevant issues
fixes #8819
How the change has been tested
Infrastructure QA (only required for crates that are maintained by @iotaledger/infrastructure)