stacklok / toolhive / 22261005499

63%

Build Type

push

github

Committed by web-flow

Commit Message

Inject W3C Trace Context into vMCP backend HTTP requests (#3814)

* Inject W3C Trace Context into vMCP backend HTTP requests

When vMCP calls backend MCP servers, traces appeared as separate,
unlinked traces in Tempo instead of being part of the same distributed
trace. Add a tracePropagatingRoundTripper to the HTTP transport chain
that injects traceparent/tracestate headers into outgoing requests,
linking vMCP client spans with backend server spans.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Remove unused httpClient and sizeLimitedTransport after merge

The merge from main into this branch brought in a refactoring that
moved per-transport sizeLimitedTransport and httpClient declarations
inside each switch case (with different behavior for SSE vs
streamable-http). The outer declarations from this branch's original
code became unused, causing lint and build failures.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Run Details

14 of 14 new or added lines in 1 file covered. (100.0%)

7 existing lines in 3 files now uncovered.

45389 of 72501 relevant lines covered (62.6%)

75.71 hits per line