- fetch_url: revalidate allowlist on every redirect hop (fixes SSRF where
302 to disallowed host / 169.254.169.254 / file:// bypassed the
url_allowlist). Stream response body with iter_bytes and cap at 1MB
so a multi-GB response from an allowlisted host cannot OOM the service.
Reuses the manual-redirect-loop pattern from yarn_client.
- list_applications: stop swallowing 404 (YARN returns 200+empty for
"no match"; 404 means the RM doesn't support the endpoint — surface
the YarnError instead of hiding it as an empty result). Add
Field(ge=1, le=10000) to ListApplicationsRequest.limit so a runaway
limit is rejected at the Pydantic layer with 422.
- save_connection: PATCH semantics for existing records. Re-route to
update_connection when the name already exists so partial updates
(e.g. only master) no longer wipe url_allowlist back to []. Uses an
_UNSET sentinel in the tool function to distinguish "omitted" from
"None" without breaking the existing parameter list.
- README: drop leading space on 5 new connection-tool table rows that
was breaking GitHub Flavored Markdown table continuity.
- Indentation: normalize connections.py and requests.py to 4-space
indent (auth_password/auth_principal/auth_keytab were 3-space).
Co-Authored-By: Claude <noreply@anthropic.com>
