Reflect excluded streams in the Streams page archiving indicator

[patrickmann]

/prd Graylog2/graylog-plugin-enterprise#15196

What

Make the "Archiving is enabled" indicator on the Streams overview and stream details pages reflect the archive plugin's excluded-streams list, not just the index set's retention strategy.

Why

The indicator was computed purely from the stream's index set (archive retention strategy, or data-tiering archive_before_deletion). It never consulted the archive plugin's excluded_streams list, so a stream excluded under Archive > Configuration > Streams to archive still showed as "Archiving is enabled". Reported in Graylog2/graylog-plugin-enterprise#14996.

How

• Add useExcludedArchiveStreams, which reads the excluded list through a new archive plugin-store export. In open source (no archive plugin) it returns an empty list via a stable no-op fallback, so the hook is always called and rules-of-hooks is satisfied. Archiving is never enabled without the enterprise plugin anyway.
• Treat a stream as archived only when its index set archives and the stream is not in excluded_streams, in both ArchivingsCell (overview) and DestinationIndexSetSection (details). The details change also correctly gates the Data Lake warning, which keys off the same flag.
• Add the PluginArchive type to @types/graylog-web-plugin.

Details

The enterprise side that provides the export is Graylog2/graylog-plugin-enterprise#15196. This PR degrades gracefully without it (indicator keeps its previous, index-set-only behavior), so there is no hard merge-order dependency.

How tested

yarn test for ArchivingsCell.test.tsx (5 cases, incl. the excluded-stream regression) and useExcludedArchiveStreams.test.ts (2 cases) — all green.

Manual:

1. Enterprise installed, an index set using the Archive retention strategy (or data tiering with archive-before-delete), and a stream on that index set.
2. Streams page: the stream shows "Archiving is enabled".
3. Archive > Configuration > Streams to archive: uncheck that stream (adds it to excluded_streams).
4. Streams page: the indicator now clears; the stream details Index Set section shows "Archiving is disabled".
5. Re-check it: the indicator returns.
6. Default stream: when the default index set archives, the default stream now shows the indicator too (previously always hidden); excluding it clears it.

Related

• Graylog2/graylog-plugin-enterprise#14996
• Graylog2/graylog-plugin-enterprise#15196 (enterprise counterpart)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (non-breaking change)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have requested a documentation update.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.