feat(queue/sql): add data access layer stores#21
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sbalabanov
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## Summary ### Why? Need Publisher implementation to enable message publishing to SQL queue topics. ### What? - Publisher validates topic names and publishes single messages via MessageStore - Thread-safe with RWMutex for concurrent publish calls - Idempotent Close() operation - Comprehensive test coverage for publish, validation, metrics, and concurrency - Single and multiple message publishing tested - Invalid topic names rejected (uppercase, special chars, empty) - Publisher closed state prevents further publishes - Concurrent publish operations verified thread-safe - Context cancellation handled correctly ## Test Plan make test ## Issues ## Stack 1. @ #22 1. #23 1. #21 1. #24 1. #34
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- Add MessageStore implementation for message persistence and retrieval - Add OffsetStore implementation for consumption offset tracking - Add PartitionLeaseStore implementation for distributed partition leasing - Add logging and metrics constants for standardized observability - Add table name constants (MessagesTableName, OffsetsTableName, etc.) to stores.go - Add comprehensive integration tests (requires go-mysql-server dependency) - Support DLQ (dead letter queue) for failed message handling - Support visibility timeout and retry logic for message processing
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Summary
Why?
Need data access layer to abstract database operations for message storage, offset tracking, and partition leasing in the SQL queue implementation.
What?
Test Plan
Issues