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docs: OpenTelemetry design — upstream SDK survey + wrapper span plan - #50
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shashikanth-gs wants to merge 9 commits into
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shashikanth-gs wants to merge 9 commits into
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Capture the multi-layer plan for optional OTel in a2a-wrapper: reuse backend SDK/CLI exporters where they exist (Copilot, Claude, Codex, OpenCode), always emit wrapper-level a2a.* spans from core, and keep A2A sideband trace artifacts as a parallel channel. Co-authored-by: Shashi Kanth G S <shashikanth-gs@users.noreply.github.com>
Spell out span ownership: when Copilot (or any backend) OTel is on, wrapper keeps A2A task/session/delegation spans and sideband artifacts, but must not mirror tool_call/trace.mcp into a second OTLP tool span. Co-authored-by: Shashi Kanth G S <shashikanth-gs@users.noreply.github.com>
Pull latest OpenTelemetry GenAI/MCP conventions from semantic-conventions-genai and map each attribute to Claude, Codex, Copilot, OpenCode, Antigravity, and planned a2a-wrapper emitters, including A2A-only a2a.* fields and anti-duplication notes. Co-authored-by: Shashi Kanth G S <shashikanth-gs@users.noreply.github.com>
Co-authored-by: Shashi Kanth G S <shashikanth-gs@users.noreply.github.com>
Document how wrapper and Copilot export to the same OTLP collector, why HTTP 4318 is the Copilot-compatible default, and how Tempo/Langfuse show one trace with separate spans rather than a merged span. Co-authored-by: Shashi Kanth G S <shashikanth-gs@users.noreply.github.com>
Map shared execute/emitter/session/factory hooks and designate core attachment points (executor decorator, AgentEventEmitter, ALS) so OTel is not reimplemented in each a2a-* wrapper. Co-authored-by: Shashi Kanth G S <shashikanth-gs@users.noreply.github.com>
Co-authored-by: Shashi Kanth G S <shashikanth-gs@users.noreply.github.com>
Clarify that core peers optional @opentelemetry/api only, hosts/CLIs own the SDK/exporter versions, and Copilot CLI OTel is out-of-process so it cannot clash with Node transitive OpenTelemetry packages. Co-authored-by: Shashi Kanth G S <shashikanth-gs@users.noreply.github.com>
Claude Agent SDK is TypeScript but OTel runs in the spawned Claude Code process (TRACEPARENT env). Antigravity has no backend OTel, so wrapper core spans plus AgentEvent mirroring cover OTLP until Python supports it. Co-authored-by: Shashi Kanth G S <shashikanth-gs@users.noreply.github.com>
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Summary
OpenTelemetry design docs for the roadmap item, now including a core-centric plumbing inventory across all providers.
Docs
docs/opentelemetry.md— architecture, de-dupe rules, collector/parent-child topology, §6 plumbing inventory (hooks A–F in@a2a-wrapper/core)docs/otel-genai-attribute-matrix.md— GenAI attribute × emitter matrixPlumbing conclusion (short)
Shared OTel must attach in core at:
createA2AServerexecutor decorator —a2a.task.execute/ cancel for all wrappersAgentEventEmitter.emit— single chokepoint for sideband→OTel policy (all mappers already converge here)extractA2ATraceContext, ALS, W3C carrier, usage→gen_ai.*Wrappers only keep Hook F (Copilot
telemetry/ Claude env / etc.). No OTel in each EventMapper.Packages touched
@a2a-wrapper/corea2a-claude/a2a-codex/a2a-copilot/a2a-opencode/a2a-antigravityChecklist
npm run build && npm testpassTest plan
packages/core/src/telemetry/*