94 lines
2.8 KiB
JavaScript
94 lines
2.8 KiB
JavaScript
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#!/usr/bin/env node
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/**
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* agent-claim-observer.js — P0 被动审计观察者 (v6.6-rc2)
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* AGENT_CLAIM_OBSERVER_P0
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*
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* SubagentStop 钩子 · 纯观察 · 不阻断 · fail-open
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* 记录 Agent 返回元数据到 debug/agent-returns.jsonl
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* 字段: {ts, traceId, session_id, agent_type, agent_id, text_length, pid}
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*
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* P0 观察期目标: 累积真实 Agent 返回数据, 为 P1 verifier 决策提供基线.
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*/
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'use strict';
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const fs = require('fs');
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const path = require('path');
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let CLAUDE_ROOT;
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try {
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CLAUDE_ROOT = require('./lib/root.js');
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} catch {
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CLAUDE_ROOT = path.dirname(__dirname);
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}
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const LOG_FILE = path.join(CLAUDE_ROOT, 'debug', 'agent-returns.jsonl');
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const WATCHDOG_MS = 3000;
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function readStdinSync() {
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try {
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return JSON.parse(fs.readFileSync(0, 'utf8'));
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} catch {
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return null;
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}
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}
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function extractText(tr) {
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if (!tr) return '';
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if (typeof tr === 'string') return tr;
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if (typeof tr.content === 'string') return tr.content;
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if (Array.isArray(tr.content)) {
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return tr.content
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.filter(b => b && b.type === 'text' && typeof b.text === 'string')
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.map(b => b.text)
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.join('\n');
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}
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return '';
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}
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function extractTraceId(input, text) {
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// 正则有界 (8-64 hex-like), 防 ReDoS
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const re = /<trace>(bwr-[A-Za-z0-9-]{8,64})<\/trace>/;
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const prompt = (input && input.tool_input && input.tool_input.prompt) || '';
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const m1 = re.exec(prompt);
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if (m1) return m1[1];
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const m2 = re.exec(text);
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if (m2) return m2[1];
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return '';
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}
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function main() {
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const wdt = setTimeout(() => process.exit(0), WATCHDOG_MS);
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wdt.unref();
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try {
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const input = readStdinSync();
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if (input) {
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const text = extractText(input.tool_response);
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const traceId = extractTraceId(input, text);
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const record = {
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ts: new Date().toISOString(),
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traceId: traceId,
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session_id: input.session_id || '',
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agent_type: (input.tool_input && input.tool_input.subagent_type) || '',
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agent_id: input.agent_id || input.tool_use_id || '',
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text_length: text.length,
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// [P0-1] METRICS_EMIT_v1
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model: (input.tool_input && input.tool_input.model) || '',
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tool_name: (input.tool_input && input.tool_input.name) || 'Agent',
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duration_ms: (input.tool_response && input.tool_response.duration_ms) || null,
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pid: process.pid,
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};
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try { fs.mkdirSync(path.dirname(LOG_FILE), { recursive: true }); } catch {}
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fs.appendFileSync(LOG_FILE, JSON.stringify(record) + '\n');
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// [P0-1] METRICS_EMIT_v1 — 指标发射
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try { require('./lib/metrics.js').emit('agent', record); } catch {}
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}
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} catch {
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// fail-open: 观察者异常不阻断主流程
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}
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clearTimeout(wdt);
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process.exit(0);
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}
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if (require.main === module) main();
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module.exports = { extractText, extractTraceId };
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