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chrislu
a5db489f82
Add InvalidateTopicExistsCache method to SeaweedMQHandlerInterface and impl ement cache refresh logic in metadata response handler. When a consumer requests metadata for a topic that doesn't appear in the cache (but was just created by a producer), force a fresh broker check and auto-create the topic if needed with default partitions. This fix attempts to address the consumer stalling issue by: 1. Invalidating stale cache entries before checking broker 2. Automatically creating topics on metadata requests (like Kafka's auto.create.topics.enable=true) 3. Returning topics to consumers more reliably However, testing shows consumers still can't find topics even after creation, suggesting a deeper issue with topic persistence or broker client communication. Added InvalidateTopicExistsCache to mock handler as no-op for testing. Note: Integration testing reveals that consumers get 'topic does not exist' errors even when producers successfully create topics. This suggests the real issue is either: - Topics created by producers aren't visible to broker client queries - Broker client TopicExists() doesn't work correctly - There's a race condition in topic creation/registration Requires further investigation of broker client implementation and SMQ topic persistence logic.