uwf-hermes: 从 Hermes session 文件读取 turn 数据,替代 ACP 流式重建 #519
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opened 2026-05-25 14:13:15 +00:00 by xingyue
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jiashuang (Jia Shuang)
jiayi (Jiayi)
luming
scottwei
tuanzi
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xiaonuo
xingyue
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Reference: uncaged/workflow#519
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问题
uwf step show和uwf step read显示的 tool call 数据是错的:name变成了 ACP 的展示用 title(如"terminal: export PATH=..."),不是真正的工具名args全是空字符串根因
uwf-hermes 的
acp-client.ts在handleToolCall里从 ACP 的session/update通知重建 messages,但:toolName字段,只有title(展示摘要),handleToolCall把 title 当工具名用了rawInput(_POLISHED_TOOLS设raw_input=None),导致 args 始终为空这是 ACP 协议设计如此——它是为 IDE 展示设计的,不是为结构化数据还原设计的。
方案
不再从 ACP 流式 update 重建 messages,改为直接读 Hermes 的 session JSON 文件(
~/.hermes/sessions/session_{sid}.json),那里面tool_calls是完整的{function: {name, arguments}}。改动点
1.
packages/workflow-agent-hermes/src/hermes.tsstorePromptResult改为用loadHermesSession(sessionId)从文件读,不再用 ACP client 返回的 messages:runPrompt相应去掉messages解构。2.
packages/workflow-agent-hermes/src/acp-client.ts删除 messages 收集相关逻辑:
pendingToolsmapmessages数组messageChunks/reasoningChunks数组handleToolCall、handleToolCallUpdate、flushAssistantMessage方法handleAgentMessageChunk、handleAgentThoughtChunk方法只保留
text提取(从最后的 agent_message_chunk 拼出 final text)。prompt()返回类型简化为{ text: string; sessionId: string }。3. 确保
write_json_snapshots开启Hermes 的 session JSON 文件受
sessions.write_json_snapshots控制(默认 False)。uwf-hermes 运行时必须确保此配置开启。方案二选一:acp-client.ts的connect时通过环境变量传递(如果支持)~/.hermes/config.yaml中配置sessions.write_json_snapshots: true推荐后者,在 uwf-hermes README 里注明。
4. Session 重入兼容
Resume 场景下 session 文件包含所有轮次(旧 + 新),与之前 ACP client 累积 messages 的行为一致,无需特殊处理。
相关文件
packages/workflow-agent-hermes/src/acp-client.ts— ACP 客户端,messages 收集逻辑packages/workflow-agent-hermes/src/hermes.ts—storePromptResult,调用入口packages/workflow-agent-hermes/src/session-detail.ts—loadHermesSession(已有,直接用)packages/cli-workflow/src/commands/step.ts—loadTurnData和TurnData类型也需要增强,支持 role/toolCalls 展示(独立问题,可一并修)