[BUG] GET /_cat/snapshots incorrectly requires a repository #16648
Description
Describe the bug
According to https://opensearch.org/docs/latest/api-reference/cat/cat-snapshots/ GET /_cat/snapshots should return all snapshots for a repository, but there's no way to specify a repository (/_cat/snapshots/{repository} works).
Instead it returns a 400 requiring a repository name.
400 (application/json) | {
"error": {
"root_cause": [
{
"type": "action_request_validation_exception",
"reason": "Validation Failed: 1: repository is missing;"
}
],
"type": "action_request_validation_exception",
"reason": "Validation Failed: 1: repository is missing;"
},
"status": 400
}
Either the doc is incorrect and this endpoint should not be exposed without a required repository parameter, or the code is broken for /_cat/snapshots.
Related component
Storage:Snapshots
To Reproduce
curl ...
Expected behavior
Behave as described in https://opensearch.org/docs/latest/api-reference/cat/cat-snapshots/.
Additional Details
Vanilla 2.18 with path.repo=/tmp/opensearch/repo.