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microsoft / vscode-copilot-chat Public

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feat(otel): Add OpenTelemetry GenAI instrumentation to Copilot Chat#3917

Merged

zhichli merged 78 commits intomainmicrosoft/vscode-copilot-chat:mainfrom

zhichli/otelmicrosoft/vscode-copilot-chat:zhichli/otelCopy head branch name to clipboard

Mar 2, 2026

Conversation Commits78 (78)Checks Files changed

Merged

feat(otel): Add OpenTelemetry GenAI instrumentation to Copilot Chat#3917
zhichli merged 78 commits intomainfrom
zhichli/otel

Commits

Commits on Mar 2, 2026

feat: add OTel GenAI instrumentation foundation
zhichli
committed
refactor: reorder OTel type imports for consistency
zhichli
committed
refactor: reorder OTel type imports for consistency
zhichli
committed
feat(otel): wire OTel spans into chat extension — Phase 1 core
zhichli
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feat(otel): add embeddings span, config UI settings, and unit tests
zhichli
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test(otel): add unit tests for messageFormatters, genAiEvents, fileExporters
zhichli
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feat(otel): record token usage and time-to-first-token metrics
zhichli
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docs: finalize sprint plan with completion status
zhichli
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style: apply formatter changes to OTel files
zhichli
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feat(otel): emit gen_ai.client.inference.operation.details event with token usage
zhichli
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feat(otel): add aggregated token usage to invoke_agent span
zhichli
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feat(otel): add token usage attributes to chat inference span
zhichli
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style: apply formatter changes
zhichli
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fix: correct import paths in otelContrib and add IOTelService to test
zhichli
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feat: add diagnostic span exporter to log first successful export and failures
zhichli
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feat: add content capture to OTel spans (messages, responses, tool args/results)
zhichli
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fix: register IOTelService in chatLib setupServices for NES test
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fix: register OTel ConfigKey settings in Advanced namespace for configurations test
zhichli
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fix: register IOTelService in shared test services (createExtensionUnitTestingServices)
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fix: register IOTelService in platform test services
zhichli
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feat(otel): enhance GenAI span attributes per OTel semantic conventions
zhichli
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feat(otel): connect subagent spans to parent trace via context propagation
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fix(otel): fix subagent trace context key to use parentRequestId
zhichli
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fix(otel): add model attrs to invoke_agent and max_prompt_tokens to BYOK chat
zhichli
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test(otel): add trace context propagation tests for subagent linkage
zhichli
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fix(otel): add finish_reasons and ttft to BYOK chat spans, document orphan spans
zhichli
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docs(otel): update Gap 4 analysis — wrapper spans have actual token usage data
zhichli
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feat(otel): propagate trace context through BYOK IPC to link wrapper spans
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debug(otel): add debug attribute to verify trace context capture in BYOK path
zhichli
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fix(otel): remove debug attribute, BYOK trace context propagation verified working
zhichli
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refactor(otel): replace byok-provider bridge span with invisible context propagation
zhichli
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refactor(otel): remove duplicate BYOK consumer-side chat span
zhichli
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fix(otel): restore chat span for non-wrapper BYOK providers (Anthropic, Gemini)
zhichli
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fix(otel): skip consumer chat span for wrapper-based BYOK providers
zhichli
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fix: remove unnecessary 'google' from non-wrapper vendor set
zhichli
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feat(otel): add rich chat span with usage data for Anthropic BYOK provider
zhichli
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feat(otel): add rich chat span for Gemini BYOK, clean up extChatEndpoint
zhichli
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feat(otel): enrich Anthropic/Gemini chat spans with full metadata
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feat(otel): add server.address to CAPI/Azure BYOK chat spans
zhichli
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feat(otel): add max_tokens and output_messages to Anthropic/Gemini chat spans
zhichli
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fix(otel): capture tool calls in output_messages for chat spans
zhichli
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fix(otel): capture tool calls in output_messages for Anthropic/Gemini BYOK spans
zhichli
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fix(otel): add input_messages and agent_name to Anthropic/Gemini chat spans
zhichli
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fix(otel): fix input_messages serialization for Anthropic/Gemini BYOK
zhichli
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docs(otel): add remaining metrics/events work to plan.md
zhichli
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feat(otel): add metrics and inference events to Anthropic/Gemini BYOK providers
zhichli
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fix(otel): fix LoggerProvider constructor — use 'processors' key (SDK v2)
zhichli
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docs: add agent monitoring guide with OTel usage and Claude/Gemini comparison
zhichli
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docs: remove Claude/Gemini comparison from monitoring guide
zhichli
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docs: add OTel comparison with Claude Code and Gemini CLI
zhichli
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docs: reorganize monitoring docs — user guide + dev architecture
zhichli
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fix(otel): restore _doFetchViaHttp body and _fetchWithInstrumentation after rebase
zhichli
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fix(otel): propagate otelSpan through WebSocket/HTTP routing paths
zhichli
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docs(otel): improve monitoring docs, add collector setup, fix trace context
zhichli
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docs(otel): merge Backend Considerations and E2E sections to remove redundancy
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docs(otel): remove internal dev debug reference from user-facing guide
zhichli
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docs(otel): remove Grafana section and Jaeger refs from App Insights section
zhichli
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docs(otel): trim Backend section to factual setup guides, remove claims
zhichli
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docs(otel): final accuracy audit — fix false claims against code
zhichli
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docs(otel): remove telemetry.telemetryLevel references — OTel is independent
zhichli
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feat(otel): wire up session.start event, agent.turn event, and session.count metric
zhichli
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chore: untrack .playwright-mcp/ and add to .gitignore
zhichli
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chore: remove otel spec reference files
zhichli
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chore(otel): remove OpenTelemetry environment variables from launch configurations
zhichli
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fix(otel): add 64KB truncation limit for content capture attributes
zhichli
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refactor(otel): make GenAiMetrics methods static to avoid per-call allocations
zhichli
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fix(otel): fix timer leak, cap buffered ops, rate-limit export logs
zhichli
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docs(otel): fix Jaeger UI port to match docker-compose (16687)
zhichli
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chore(otel): update sprint plan — mark P0/P1 tasks done
zhichli
committed
fix(otel): remove as any casts in BYOK provider content capture
zhichli
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refactor(otel): extract OTelModelOptions shared interface
zhichli
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refactor(otel): route OTel logs through ILogService output channel
zhichli
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fix(otel): remove orphaned OTel ConfigKey definitions
zhichli
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test(otel): add comprehensive OTel instrumentation tests
zhichli
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chore: apply formatter import sorting
zhichli
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chore: remove outdated sprint plan document
zhichli
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feat(otel): add OTel configuration settings for tracing and logging
zhichli
committed
fix(otel): ensure metric reader is flushed and shutdown properly
zhichli
committed

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