Handle sigterm

[iuwqyir]

TL;DR

Added graceful shutdown support to all orchestrator components using context cancellation.

What changed?

• Modified all orchestrator components (ChainTracker, Committer, FailureRecoverer, Poller, ReorgHandler) to accept a context parameter
• Added signal handling for SIGTERM and SIGINT in the main orchestrator
• Implemented proper cleanup with defer ticker.Stop() in all components
• Added new shutdown method to the orchestrator
• Added test coverage for graceful shutdown scenarios

How to test?

1. Run the application
2. Send a SIGTERM signal (kill -TERM <pid>)
3. Verify that all components log their shutdown messages
4. Confirm that the application exits cleanly without hanging
5. Run the test suite to verify the new shutdown behavior tests pass

Why make this change?

This change ensures proper resource cleanup and graceful shutdown when the application needs to stop, preventing resource leaks and allowing for clean container orchestration. It's particularly important for cloud deployments where proper shutdown handling is crucial for container lifecycle management.

[iuwqyir]

• create an endpoint to query token balances #136
• Handle sigterm #150 👈 (View in Graphite)
• Chain based table name and default columns configuration #151
• Use VersionedCollapsingMergeTree and insert based deletes #149
• Specific column selection and api serialization #148
• Conform getTraces to api standard #147
• main

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