Stream Error Handling to push unhandled messages to a new Topic specifically used for error handling

[arg-foo]

User Story
As a developer, I want to implement stream error handling that pushes unhandled messages to a dedicated error topic so that all errors are segregated, monitored, and can be processed separately, improving system reliability and troubleshooting.

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Details & Requirements

1. Error Capture and Identification

   • Detect unhandled errors during stream processing, such as exceptions, timeouts, or invalid message formats.
   • Ensure that any error encountered during streaming is captured promptly with all relevant context.

2. Dedicated Error Topic

   • Configure a dedicated error topic in the messaging system (e.g., Kafka, RabbitMQ) to receive all unhandled error messages.
   • Ensure that this error topic is isolated from regular data streams to facilitate targeted monitoring and processing.

3. Message Enrichment and Logging

   • Enrich error messages with metadata (e.g., timestamp, source stream, error details, stack trace) to aid in diagnosis.
   • Securely log error details, ensuring sensitive information is redacted, and forward the enriched messages to the error topic.

4. Monitoring and Alerting

   • Integrate monitoring tools to track the volume and frequency of messages in the error topic.
   • Set up alerting mechanisms to notify developers when error message thresholds are exceeded.

5. Testing and Documentation

   • Develop unit and integration tests to simulate streaming errors and verify that error messages are routed to the error topic.
   • Update documentation with configuration guidelines and troubleshooting steps for the error handling process.

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Acceptance Criteria

• Unhandled errors in the streaming process are automatically captured and enriched with contextual metadata.
• Error messages are routed to a dedicated error topic without affecting normal data flow.
• Monitoring and alerting systems accurately track error volumes and notify developers of potential issues.
• Comprehensive tests confirm the correct routing of error messages under various failure scenarios.
• Documentation is provided with clear instructions on configuring, monitoring, and troubleshooting the error handling mechanism.

[arg-foo]

@Charles-aelf has done a rough design, please seek his guidance