Fix/chainhook connection retry#407

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Mosas2000 merged 31 commits into

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fix/chainhook-connection-retry

May 17, 2026

Commits on May 17, 2026

add retry module with exponential backoff for transient errors
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add tests for retry module (isRetryable, calculateBackoff, withRetry)
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wrap PostgresEventStore queries with retry on transient errors
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reflect storage health state in /health endpoint status and status code
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expand classifyError to cover all retryable postgres and network error codes
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add storage retry integration tests covering recovery and exhaustion scenarios
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add health endpoint tests verifying storage state is reflected in response
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add EPIPE and ENETUNREACH to classifyError and extend error classification tests
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add parseRetryConfig for env-based retry tuning with tests
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wire retryConfig into PostgresEventStore and PostgresScheduledTipStore constructors
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document DB_RETRY_* environment variables in .env.example
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add connection retry runbook with configuration and behavior documentation
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log retry configuration at service startup
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track db retry attempts, successes, and exhaustions in metrics
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add tests for retry metrics tracking (attempts, successes, exhausted)
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verify retry counters are exposed in /metrics endpoint
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add unit tests for Metrics.recordDbRetry and toJSON retry fields
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export sleep helper from retry module for testability
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add edge case tests for isRetryable and withRetry boundary conditions
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add calculateBackoff tests for zero base delay and cap boundary
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add parseRetryConfig tests for large values and float truncation
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add tests for custom shouldRetry predicate in withRetry
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add PostgresEventStore constructor validation tests
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pass retryOptions through createEventStore and createScheduledTipStore factories
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add createEventStore factory tests for memory mode and health checks
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add retry tests for pool exhaustion, deadlock, and serialization failures
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add toErrorResponse tests for storage and connection error classification
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document retry metrics counters in CONNECTION_RETRY runbook
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add changelog for connection retry implementation
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add retry attempt count boundary tests for maxAttempts 1 and 2
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resolve merge conflict in server.js startup log
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