[BUG] OSIndexAPIImpl.getClosedIndexes() not implemented — closed OS indices become invisible

[fabrizzio-dotCMS]

Summary

OSIndexAPIImpl.getClosedIndexes() returns an empty list (unimplemented stub). When an OS index is closed via PUT /api/v1/esindex/{name}?action=close, it becomes invisible to all subsequent API calls.

Operations on a closed OS index return HTTP 404 because the existence guard (indexExists()) cannot find the index — it only checks open indices.

Affected operations (after closing an OS index)

• PUT /api/v1/esindex/{name}?action=open → 404
• PUT /api/v1/esindex/{name}?action=activate → 404
• DELETE /api/v1/esindex/{name} → 404
• GET /api/v1/esindex/ → index not listed

Fix

Implement OSIndexAPIImpl.getClosedIndexes() using the OpenSearch /_cat/indices API with expand_wildcards=closed:

// OpenSearch Java client equivalent of: GET /_cat/indices?expand_wildcards=closed
client.cat().indices(r -> r.expandWildcards(ExpandWildcard.Closed))

Comparison

ESIndexAPI.getClosedIndexes() (already implemented) can serve as the reference implementation pattern.

Discovered via

QA test run — TC-04c/d against dotcms/dotcms:latest with single-node-os-migration stack, Phase 3.

Related

• Refs [TASK] Migrate ESMappingAPIImpl #34933
• PR task(Migrate ESMappingAPIImpl) Refs #34933 #35289