zhaohai666 opened a new pull request, #2513:
URL: https://github.com/apache/rocketmq-dashboard/pull/2513
# [Web] DLQ message details, selected re-send and Excel export
## Summary
The studio DLQ page only offered group-level statistics, a time-window bulk
re-delivery action and a
JSON export. Compared with the classic dashboard it was missing the two
most-used operations:
browsing the **individual dead-letter messages** of a group, and
**re-sending a single / selected
batch** of them. The JSON export also did not match the expected Excel
format. This PR closes that gap.
## Changes
### Backend
- **`DLQProvider`** (interface) and **`DLQProviderStub`**: three new
operations —
`listMessages` (paged details), `resendMessages` by `msgId` list, and
`exportExcel`.
- **`RocketMQDLQProvider`**:
- `listMessages` scans the `%DLQ%<group>` topic with a pull consumer
within the requested window
and returns a `PageResult<DLQMessageVO>` (msgId, topic, queueId, offset,
storeTime, keys, body).
- `resendMessages(msgIds, targetTopic)` scans the DLQ topic, filters the
selected messages by
msgId and re-sends each to its origin topic (or an explicit target) with
a short-lived producer,
reusing the existing `resendOne` logic (including origin-topic property
fallback).
- `exportExcel` streams the same scan into a real `.xlsx` workbook.
- **`DLQController`**: three new endpoints —
- `GET /api/dlq/{groupName}/messages` (paged details),
- `POST /api/dlq/resend-selected` (by msgId list, optional targetTopic),
- `GET /api/dlq/export-excel` (single message ids or the whole window,
returns `.xlsx`).
- **`DLQService`**: validation + Apache-only guard (cloud instances keep
`501`), plus
`resendSelectedMessages` and `exportExcel` delegation.
- New **`DLQMessageExcelRow`** (EasyExcel row model with formatted store
time) and
**`DLQResendSelectedRequestDTO`**.
- **`server/pom.xml`**: adds `com.alibaba:easyexcel:2.2.10` for `.xlsx`
generation.
### Frontend
- `api/message.ts`: `DLQMessage` / `DLQMessagePage` types and
`listDLQMessages`,
`resendDLQSelected`, `exportDLQExcel` API functions.
- `services/messageService.ts`: service wrappers (with mock fallbacks).
- `pages/instance/dlq.tsx`:
- The old "查看详情" stats dialog is replaced by a **message detail drawer**:
paged table of
dead-letter messages, row selection, single / batch re-send, and Excel
export of the selection
or the whole window.
- The row-level "导出" action now downloads `.xlsx` instead of `.json`.
## Tests
- `RocketMQDLQProviderTest` / `DLQServiceTest` / `DLQControllerTest` /
`DLQProviderStubTest`:
49 tests green, covering the new endpoints, paged detail validation and
provider delegation.
- `DLQPage.test.tsx`: updated the detail-dialog case to assert the new
drawer (including the
`listDLQMessages` call) and the Excel export path (`.xlsx` download via
the shared download util).
## Validation
- Frontend: `tsc -b` clean; `DLQPage.test.tsx` (14) green.
- Backend: `mvn -o checkstyle:check test
-Dtest="RocketMQDLQProviderTest,DLQServiceTest,DLQControllerTest,DLQProviderStubTest"`
—
49 tests green.
## Notes
- The existing time-window bulk re-send and group-level CSV export are kept
unchanged.
- Cloud instances still return `501` for DLQ detail / resend / Excel
operations
(`requireApacheInstance` guard), consistent with the rest of the DLQ
feature.
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