{"record":{"id":"68f85b07142ce174","repo":"BigPizzaV3/CodexPlusPlus","slug":"result-message-codex-canvas-panel","errorCode":null,"errorMessage":"result?.message||'Codex++ 会话读取失败'","messagePattern":"result\\?\\.message\\|\\|'Codex\\+\\+ 会话读取失败'","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"tools/conversation-canvas/src/canvas-panel.js","lineNumber":285,"sourceCode":"    const messages=await readNativeHistory((method,params)=>manager.sendRequest(method,params,{priority:'background',timeoutMs:15000}),id,historyCache,progress,signal);\n    const signature=[];for(const message of messages){signal.throwIfAborted();signature.push(message.id+':'+await messageDigest(message));}\n    return {status:'ok',kind:'canvas-messages',session_id:id,messages,content:signature.join('|')};\n  }\n  async function sync(force=false){\n    const id=currentId();\n    if(!id){historyAbort?.abort();requestSequence++;active='';pending=null;data=null;revision='';taskCanvas.context('');$('pending-tray').replaceChildren();$('transcript').replaceChildren();$('details').hidden=true;status('请打开具体任务。');return;}\n    if(id!==active){\n      historyAbort?.abort();taskCanvas.context(id);pendingOffset=0;pendingOpen=false;sourceState={page:0};collapsedByThread.set(active,collapsedNodes);collapsedNodes=collapsedByThread.get(id)||new Set();active=id;organizationStatus(organizing===id?'GPT-5.6 Luna · 中 · 正在后台整理…':'');requestSequence++;pending=null;data=null;revision='';selected=null;lastRead=0;\n      $('pending-tray').replaceChildren();$('transcript').replaceChildren();$('details').hidden=true;$('subtitle').textContent='';$('title').textContent='当前对话';tab('map');\n    }\n    if(pending===id||(!force&&Date.now()-lastRead<5000))return;\n    const seq=++requestSequence;pending=id;lastRead=Date.now();if(!data)status('正在读取当前对话…');\n    const abort=new AbortController();historyAbort=abort;\n    try{\n      await hydrateAnnotations(id);\n      const result=await readCanvasSource(id,abort.signal,text=>{if(!disposed&&seq===requestSequence)status(text);});\n      if(disposed||seq!==requestSequence||id!==currentId())return;\n      if(result?.status!=='ok')throw new Error(result?.message||'Codex++ 会话读取失败');\n      if(!data||result.content!==revision){\n        data=result.kind==='canvas-messages'?{threadId:id,title:storedAnnotations(id).title||'当前对话',messages:result.messages,...buildGraph(result.messages,storedAnnotations(id))}:graphFromExport(result,id,storedAnnotations(id));revision=result.content;render();\n        diagnostic('native_data',{nodeCount:data.nodes.length,messageCount:data.messages.length});\n      }\n      status(`已同步${nativeReadTasks.has(id)?'（原生分页）':''} · ${data.nodes.filter(n=>n.summaryKind!=='原文摘录').length} 个任务节点`);\n    }catch(e){\n      if(!disposed&&seq===requestSequence){status(`读取失败：${e.message}`);diagnostic('native_error',{message:e.message});}\n    }finally{if(seq===requestSequence)pending=null;}\n  }\n  function closePanel(){pane.classList.remove('open');toggle.setAttribute('aria-expanded','false');}\n  $('organize').onclick=organize;\n  $('pause-organize').onclick=()=>organizationAbort.abort();\n  retry.onclick=()=>sync(true);\n  toggle.onclick=()=>{const open=pane.classList.toggle('open');toggle.setAttribute('aria-expanded',String(open));updatePanelBounds();if(open){sync(true);taskCanvas.refresh();}};\n  $('close').onclick=()=>{closePanel();toggle.focus();};\n  $('pending-tray').addEventListener('toggle',e=>{if(e.target.classList?.contains('pending-messages'))pendingOpen=e.target.open;},true);\n  $('pending-tray').onclick=e=>{\n    const page=e.target.closest('[data-pending-page]');if(page){pendingOffset=Number(page.dataset.pendingPage);pendingOpen=true;renderTree();return;}","sourceCodeStart":267,"sourceCodeEnd":303,"githubUrl":"https://github.com/BigPizzaV3/CodexPlusPlus/blob/b1ed92e5e4a2d74095d4b8db5af43cef7acba9c6/tools/conversation-canvas/src/canvas-panel.js#L267-L303","documentation":"Same guard as the userscript sync loop, but in tools/conversation-canvas/src/canvas-panel.js (the packaged panel). When readCanvasSource returns a non-ok result or nothing at all, it throws Error(result?.message || 'Codex++ 会话读取失败') so the sync rejects with the bridge's error message.","triggerScenarios":"Any sync in the panel where the session-read bridge reports {status:'error'} or resolves null/undefined — host absent, rollout file unreadable, request dropped.","commonSituations":"Panel running against an outdated Codex++ host; rollout jsonl missing for the requested thread; permissions or path errors inside the host reading the session file.","solutions":["Match panel and host/bridge versions","Read the underlying result.message and fix the root cause (missing file, permissions)","Retry the sync or re-open the panel","Show the failure in status and retain the last good canvas data"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"if (!result || result.status !== 'ok') throw new Error(result?.message || 'Codex++ 会话读取失败');","typeGuard":null,"tryCatchPattern":"catch(e){ status(`同步失败：${e.message}`); /* retain last rendered graph */ }","preventionTips":["Keep panel and host versions in sync","Log the underlying bridge message for diagnosis","Retry sync after host restart"],"tags":["bridge","ipc","runtime"],"backgroundTag":"api-error-response","analyzedSha":"b1ed92e5e4a2d74095d4b8db5af43cef7acba9c6","analyzedAt":"2026-09-19T23:35:21.129Z","contentChangedAt":"2026-09-19T23:35:21.129Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}