elephone-184 opened a new pull request, #3141:
URL: https://github.com/apache/rocketmq-dashboard/pull/3141
## Summary
This PR adds a Message Batch Resend and Export Audit Pipeline to enhance
RocketMQ DLQ and Message Explorer capabilities.
### Key Features
1. **Multithreaded Batch Dispatching**:
- Built `MessageBatchOperationService` supporting controlled concurrency
(`maxConcurrency`) and rate-limiting delays (`rateLimitDelayMs`).
- Integrated Regex filter engine matching message Tags and arbitrary
message Properties before resending.
2. **Audit CSV Export**:
- Added `/message-batch/export.do` endpoint allowing operators to export
selected or queried message metadata into standard CSV format.
3. **Frontend Batch Dialog**:
- Added `MessageBatchOperationDialog.jsx` component for user-friendly
execution and instant progress feedback.
## Test Plan
- Verified batch dispatching logic with mock MessageView targets.
- Verified CSV header formatting and property regex evaluation.
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