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* fix(prometheus): sanitize label values to prevent metric scrape failures
Unicode characters like U+2028 (Line Separator) in Prometheus label values
break the text exposition format, causing scrapers (e.g. Datadog) to fail
parsing the entire /metrics endpoint. One bad label value causes ALL metrics
to be lost, not just the affected metric.
Add _sanitize_prometheus_label_value() and apply it in prometheus_label_factory()
and all direct .labels() call sites.
* fix(prometheus): handle non-string label values in sanitization
Coerce non-string values (int, bool, float) to str before applying
sanitization, preventing AttributeError on .replace() calls.
* fix(prometheus): run sanitization on coerced non-string values
Non-string values should be coerced to str and then sanitized (not
returned early), so their string representations also get cleaned.
* fix(prometheus): widen type hint to Optional[Any] for label value sanitization
- Fix zero-TTL edge case: floor at MCP_OAUTH2_TOKEN_CACHE_MIN_TTL (10s)
- Make all MCP OAuth2 constants env-configurable via os.getenv()
- Move test file to follow 1:1 mapping convention (test_oauth2_token_cache.py)
- Add MCP OAuth doc page (mcp_oauth.md) with M2M and PKCE sections
- Update FAQ in mcp.md to reflect M2M support
- Add E2E test script and config
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(callbacks): allow MAX_CALLBACKS override via env var (#20778)
* fix(callbacks): allow MAX_CALLBACKS override via env var
- Move MAX_CALLBACKS from logging_callback_manager.py to constants.py
- Add LITELLM_MAX_CALLBACKS env var override (default: 30)
- Add troubleshooting doc explaining the limit and override
Fixes issue where large deployments with 60+ teams using guardrails
would hit the hardcoded MAX_CALLBACKS=30 limit and fail to start.
* docs: add max_callbacks to sidebar navigation
---------
Co-authored-by: shin-bot-litellm <shin-bot-litellm@users.noreply.github.com>
* fix callbacks issue
---------
Co-authored-by: shin-bot-litellm <shin-bot-litellm@berri.ai>
Co-authored-by: shin-bot-litellm <shin-bot-litellm@users.noreply.github.com>
