stacklok / toolhive / 21835073589

62%

Build Type

push

github

Committed by web-flow

Commit Message

chore(vMCP): Add tool call labels to vMCP telemetry metrics (#3687)

* Add MCP parsing middleware to vMCP and enrich backend metric labels

Wire mcp.ParsingMiddleware into the vMCP server middleware chain so the
telemetry middleware can label incoming request metrics with the actual
mcp_method (e.g. "tools/call", "initialize") instead of "unknown".

Add tool_name and prompt_name attributes to backend telemetry spans and
metrics for finer-grained observability on outgoing backend calls.

Add TestIntegration_TelemetryMiddleware covering incoming request
counters, backend call metrics, custom resource attributes, and
mcp_method label propagation.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Add mcp_resource_id label to telemetry middleware request metrics

Enrich the common metric attributes on toolhive_mcp_requests and
toolhive_mcp_request_duration with mcp_resource_id, which surfaces the
tool name (tools/call), resource URI (resources/read), or prompt name
(prompts/get) from the already-parsed MCP request context.

Update unit and integration tests to assert the new label, and extract
repeated string literals into constants to satisfy goconst.


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Co-authored-by: Cursor <cursoragent@cursor.com>

Run Details

10 of 11 new or added lines in 3 files covered. (90.91%)

6 existing lines in 2 files now uncovered.

42367 of 69025 relevant lines covered (61.38%)

78.14 hits per line