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帮助开发者为 Copilot Chat 代理链路添加和维护 OpenTelemetry 监控埋点。
复制安装指令，让 AI 自动完成配置 · 推荐新手
请帮我安装 askskill 上的 "otel" 技能： 1. 下载 https://raw.githubusercontent.com/microsoft/vscode/main/.github/skills/otel/SKILL.md 2. 保存为 ~/.claude/skills/otel/SKILL.md 3. 装好后重载技能，告诉我可以用了
请为 Copilot Chat 的新代理执行入口设计 OpenTelemetry 埋点方案，说明应添加哪些 span、metric 和 event，命名规范是什么，并指出需要更新哪些 monitoring 文档。
给出完整的埋点设计清单，包含监控项、命名约定及文档更新建议。
我修改了 Copilot CLI bridge 的 OTel span 发射逻辑，请帮我审查这次改动是否符合现有 IOTelService 抽象、span 约定以及用户/开发者监控文档的一致性要求。
输出一份审查意见，指出一致性问题、潜在风险和建议修正项。
请根据最新的 Claude span、metrics 和 events 实现，整理一版 `extensions/copilot/docs/monitoring/agent_monitoring*.md` 的更新提纲，要求同时说明代码实现与文档之间的对应关系。
生成结构化文档提纲，清楚列出监控字段、含义和代码对应位置。
When adding, changing, or reviewing OTel telemetry in the Copilot Chat extension, always read the two source-of-truth docs first and always keep them in sync with the code you change.
The extensions/copilot/docs/monitoring/ directory contains the two specs that define the OTel contract for the extension. Treat them like the layout / layer specs in vs/sessions.
| Document | Path | Audience | Covers |
|---|---|---|---|
| User-facing | extensions/copilot/docs/monitoring/agent_monitoring.md | Extension users | Quick start, settings, env vars, exported spans/metrics/events, backend setup guides |
| Architecture | extensions/copilot/docs/monitoring/agent_monitoring_arch.md | Developers | Multi-agent strategies, span hierarchies, file structure, instrumentation points, , configuration channels |
IOTelService| Visual flow | extensions/copilot/docs/monitoring/otel-data-flow.html | Developers | Renders the bridge data flow for the in-process Copilot CLI agent |
If the implementation changes, you must update the relevant doc in the same PR. The arch doc is the most likely to drift; treat divergence as a bug.
The extension has four agent execution paths, each with a different OTel strategy:
| Agent | Process Model | Strategy | Debug Panel Source |
|---|---|---|---|
Foreground (toolCallingLoop) | Extension host | Direct IOTelService spans | Extension spans |
| Copilot CLI in-process | Extension host (same process) | Bridge SpanProcessor — SDK creates spans natively; bridge forwards to debug panel | SDK native spans via bridge |
| Copilot CLI terminal | Separate terminal process | Forward OTel env vars | N/A (separate process) |
| Claude Code | Child process (Node fork) | Synthesized from SDK messages — extension intercepts the Claude SDK message stream in claudeMessageDispatch.ts and emits GenAI spans; LLM calls are proxied through claudeLanguageModelServer.ts (which calls chatMLFetcher, producing standard chat spans). | Extension spans |
Why asymmetric? The CLI SDK runs in-process with full trace hierarchy (subagents, permissions, hooks). A bridge captures this directly. Claude runs as a separate process — internal spans are inaccessible, so the extension synthesizes spans by translating SDK messages and proxying the model API.
extensions/copilot/src/platform/otel/
├── common/
│ ├── otelService.ts # IOTelService interface + ISpanHandle + injectCompletedSpan
│ ├── otelConfig.ts # Config resolution (env → settings → defaults), enabledVia, dbSpanExporter
│ ├── noopOtelService.ts # Zero-cost no-op (used by chatLib / tests)
│ ├── inMemoryOTelService.ts # ← actually under node/, see below
│ ├── agentOTelEnv.ts # deriveCopilotCliOTelEnv / deriveClaudeOTelEnv
│ ├── genAiAttributes.ts # ⚠ Single source of truth for attribute keys & enums
│ ├── genAiEvents.ts # Event emitter helpers (emit*Event)
│ ├── genAiMetrics.ts # GenAiMetrics class
│ ├── messageFormatters.ts # truncateForOTel, normalizeProviderMessages, toSystemInstructions, …
│ ├── workspaceOTelMetadata.ts
│ ├── sessionUtils.ts
│ └── index.ts # ⚠ Public barrel — re-export new helpers/constants here
└── node/
├── otelServiceImpl.ts # NodeOTelService + DiagnosticSpanExporter + FilteredSpanExporter + EXPORTABLE_OPERATION_NAMES
├── inMemoryOTelService.ts # InMemoryOTelService (used when OTel is disabled — feeds debug panel only)
├── fileExporters.ts # File-based span/log/metric exporters
└── sqlite/ # OTelSqliteStore + SqliteSpanExporter (dbSpanExporter pipeline)
extensions/copilot/src/extension/
├── chatSessions/
│ ├── copilotcli/node/
…
将脱敏后的智能体会话记录附加到 GitHub PR 或议题正文，保留本地溯源信息。