Add platform AI Workspace Hub

2026-05-30 13:28:23 +03:00
parent e605e95920
commit 469657d526
13 changed files with 1403 additions and 7 deletions
@@ -0,0 +1,23 @@
+FROM node:20-alpine AS deps
+
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+RUN npm ci --omit=dev
+
+FROM node:20-alpine AS runner
+
+ENV NODE_ENV=production
+ENV PORT=18081
+
+WORKDIR /app
+
+COPY --from=deps /app/package.json /app/package-lock.json ./
+COPY --from=deps /app/node_modules ./node_modules
+COPY src ./src
+
+USER node
+
+EXPOSE 18081
+
+CMD ["node", "src/server.mjs"]
@@ -0,0 +1,32 @@
+# NODE.DC AI Workspace Hub
+
+Public rendezvous and relay service for AI Workspace Codex workers.
+
+The service is intentionally thin:
+
+- Windows Codex agents connect outbound over WebSocket.
+- Engine talks to the hub over internal HTTP endpoints.
+- The hub routes requests, public reasoning events, final responses and stop commands by pairing code.
+- The hub does not run Codex and does not store project files.
+
+## Public WebSocket
+
+```text
+wss://ai-hub.nodedc.ru/api/ai-workspace/hub?pairingCode=<code>&machineName=<name>
+```
+
+Synology terminates TLS and proxies the request to this service over HTTP.
+
+## Internal HTTP
+
+All internal API routes require `Authorization: Bearer <AI_WORKSPACE_HUB_TOKEN>` when `AI_WORKSPACE_HUB_TOKEN` is configured.
+
+```text
+GET  /healthz
+GET  /api/ai-workspace/hub/v1/agents/:pairingCode
+GET  /api/ai-workspace/hub/v1/agents/:pairingCode/events?since=0&limit=100
+POST /api/ai-workspace/hub/v1/agents/:pairingCode/request
+POST /api/ai-workspace/hub/v1/agents/:pairingCode/dispatch
+```
+
+`request` waits for the worker response. `dispatch` returns immediately and keeps events available for polling.
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+      "license": "MIT",
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+}
@@ -0,0 +1,14 @@
+{
+  "name": "@nodedc/ai-workspace-hub",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "start": "node src/server.mjs",
+    "dev": "node --watch src/server.mjs"
+  },
+  "dependencies": {
+    "express": "^5.2.1",
+    "ws": "^8.18.3"
+  }
+}
@@ -0,0 +1,389 @@
+import crypto from "node:crypto";
+import { createServer } from "node:http";
+import express from "express";
+import { WebSocket, WebSocketServer } from "ws";
+
+const DEFAULT_WS_PATH = "/api/ai-workspace/hub";
+const MAX_EVENTS_PER_AGENT = 5000;
+const MAX_REQUEST_META_PER_AGENT = 1000;
+
+const config = readConfig();
+const app = express();
+const httpServer = createServer(app);
+const wss = new WebSocketServer({ noServer: true });
+const agentsByCode = new Map();
+let eventSeq = 0;
+
+app.disable("x-powered-by");
+app.use(express.json({ limit: "1mb" }));
+
+app.get("/healthz", (_req, res) => {
+  res.json({
+    ok: true,
+    service: "nodedc-ai-workspace-hub",
+    wsPath: config.wsPath,
+    agentsOnline: Array.from(agentsByCode.values()).filter(isAgentOnline).length,
+    internalApiConfigured: Boolean(config.internalAccessToken),
+  });
+});
+
+app.get("/api/ai-workspace/hub/v1/agents/:pairingCode", requireInternalApi, (req, res) => {
+  const agent = agentsByCode.get(cleanPairingCode(req.params.pairingCode));
+  res.json({ ok: true, agent: publicAgent(agent) });
+});
+
+app.get("/api/ai-workspace/hub/v1/agents/:pairingCode/events", requireInternalApi, (req, res) => {
+  const payload = readAgentEvents(req.params.pairingCode, {
+    since: req.query.since,
+    limit: req.query.limit,
+  });
+  res.json({ ok: true, ...payload });
+});
+
+app.post("/api/ai-workspace/hub/v1/agents/:pairingCode/request", requireInternalApi, asyncRoute(async (req, res) => {
+  const command = cleanString(req.body?.command, 100);
+  const timeoutMs = sanitizeTimeoutMs(req.body?.timeoutMs, 30000);
+  const payload = await requestAgent(req.params.pairingCode, command, req.body?.payload || {}, timeoutMs, {
+    quiet: Boolean(req.body?.quiet),
+  });
+  res.json({ ok: true, payload });
+}));
+
+app.post("/api/ai-workspace/hub/v1/agents/:pairingCode/dispatch", requireInternalApi, (req, res) => {
+  const command = cleanString(req.body?.command, 100);
+  const timeoutMs = sanitizeTimeoutMs(req.body?.timeoutMs, 30000);
+  const dispatch = dispatchAgent(req.params.pairingCode, command, req.body?.payload || {}, timeoutMs, {
+    quiet: Boolean(req.body?.quiet),
+  });
+  res.json({ ok: true, requestId: dispatch.requestId });
+});
+
+app.use((error, _req, res, _next) => {
+  const status = Number(error?.status || 500);
+  res.status(status >= 400 && status < 600 ? status : 500).json({
+    ok: false,
+    error: String(error?.message || error || "internal_error"),
+  });
+});
+
+httpServer.on("upgrade", (req, socket, head) => {
+  let pathname = "";
+  try {
+    pathname = new URL(req.url || "/", "http://localhost").pathname;
+  } catch {}
+  if (pathname !== config.wsPath) return;
+  wss.handleUpgrade(req, socket, head, (ws) => {
+    wss.emit("connection", ws, req);
+  });
+});
+
+wss.on("connection", attachAgent);
+
+const heartbeat = setInterval(() => {
+  for (const agent of agentsByCode.values()) {
+    try {
+      agent.socket.ping();
+    } catch {}
+  }
+}, 30000);
+
+httpServer.listen(config.port, "0.0.0.0", () => {
+  console.log(`NODE.DC AI Workspace Hub listening on http://0.0.0.0:${config.port}`);
+  console.log(`NODE.DC AI Workspace Hub ws path: ${config.wsPath}`);
+});
+
+process.on("SIGTERM", shutdown);
+process.on("SIGINT", shutdown);
+
+function attachAgent(socket, req) {
+  const url = new URL(req.url || config.wsPath, "http://localhost");
+  const pairingCode = cleanPairingCode(url.searchParams.get("pairingCode"));
+  if (!pairingCode) {
+    socket.close(1008, "pairing_code_required");
+    return;
+  }
+
+  const previous = agentsByCode.get(pairingCode);
+  if (previous) {
+    settleAll(previous, Object.assign(new Error("agent_replaced"), { status: 503 }));
+    previous.socket.close(4000, "agent_replaced");
+  }
+
+  const now = new Date().toISOString();
+  const agent = {
+    socket,
+    pairingCode,
+    machineName: cleanString(url.searchParams.get("machineName"), 120),
+    host: "",
+    connectedAt: now,
+    lastSeenAt: now,
+    pending: new Map(),
+    requestMeta: previous?.requestMeta || new Map(),
+    events: previous?.events || [],
+  };
+  agentsByCode.set(pairingCode, agent);
+  pushAgentEvent(agent, "", { kind: "connected", message: "Bridge agent connected." });
+
+  socket.on("message", (raw) => handleAgentMessage(agent, raw));
+  socket.on("close", () => {
+    pushAgentEvent(agent, "", { kind: "disconnected", message: "Bridge agent disconnected." });
+    if (agentsByCode.get(pairingCode) === agent) agentsByCode.delete(pairingCode);
+    settleAll(agent, Object.assign(new Error("bridge_agent_offline"), { status: 503 }));
+  });
+  socket.on("error", () => {});
+
+  sendJson(socket, {
+    type: "ready",
+    pairingCode,
+    connectedAt: now,
+  });
+}
+
+function handleAgentMessage(agent, raw) {
+  agent.lastSeenAt = new Date().toISOString();
+  let message = null;
+  try {
+    message = JSON.parse(String(raw));
+  } catch {
+    return;
+  }
+
+  if (message?.type === "hello") {
+    agent.machineName = cleanString(message.machineName || agent.machineName, 120);
+    agent.host = cleanString(message.host, 120);
+    pushAgentEvent(agent, "", {
+      kind: "hello",
+      message: "Bridge agent hello received.",
+      cwd: cleanString(message.cwd, 500),
+    });
+    return;
+  }
+
+  if (message?.type === "event") {
+    const pending = message?.requestId ? agent.pending.get(String(message.requestId || "")) : null;
+    if (pending?.quiet) return;
+    pushAgentEvent(agent, message.requestId, message.event || message.payload || {});
+    return;
+  }
+
+  if (message?.type !== "response") return;
+  const requestId = String(message.requestId || "");
+  const pending = agent.pending.get(requestId);
+  if (!pending) return;
+  agent.pending.delete(requestId);
+  clearTimeout(pending.timeout);
+  if (!pending.quiet) {
+    pushAgentEvent(agent, requestId, {
+      kind: "response_received",
+      message: `Bridge response received after ${elapsedLabel(pending.startedAt)}.`,
+    });
+  }
+  if (message.ok === false) {
+    const error = new Error(String(message.error || "bridge_agent_failed"));
+    error.status = Number(message.status || 502);
+    if (!pending.quiet) pushAgentEvent(agent, requestId, { kind: "error", message: error.message });
+    pending.reject(error);
+    return;
+  }
+  if (!pending.quiet) pushAgentEvent(agent, requestId, { kind: "done", message: "Bridge request completed." });
+  pending.resolve(message.payload || { ok: true });
+}
+
+function requestAgent(pairingCodeRaw, command, payload = {}, timeoutMs = 30000, options = {}) {
+  return startAgentRequest(pairingCodeRaw, command, payload, timeoutMs, options).promise;
+}
+
+function dispatchAgent(pairingCodeRaw, command, payload = {}, timeoutMs = 30000, options = {}) {
+  const { requestId, promise } = startAgentRequest(pairingCodeRaw, command, payload, timeoutMs, options);
+  promise.catch(() => {});
+  return { requestId };
+}
+
+function startAgentRequest(pairingCodeRaw, command, payload = {}, timeoutMs = 30000, options = {}) {
+  const pairingCode = cleanPairingCode(pairingCodeRaw);
+  const agent = agentsByCode.get(pairingCode);
+  if (!agent || !isAgentOnline(agent)) {
+    const error = new Error("bridge_agent_offline");
+    error.status = 503;
+    throw error;
+  }
+
+  const requestId = crypto.randomUUID();
+  const quiet = Boolean(options?.quiet);
+  agent.requestMeta.set(requestId, requestMetaFromPayload(command, payload));
+  trimRequestMeta(agent);
+  const promise = new Promise((resolve, reject) => {
+    const timeout = setTimeout(() => {
+      agent.pending.delete(requestId);
+      const error = new Error("bridge_timeout");
+      error.status = 504;
+      if (!quiet) pushAgentEvent(agent, requestId, { kind: "timeout", command, message: "Bridge request timed out." });
+      reject(error);
+    }, timeoutMs);
+    const startedAt = Date.now();
+    agent.pending.set(requestId, { resolve, reject, timeout, startedAt, quiet });
+    if (!quiet) pushAgentEvent(agent, requestId, { kind: "engine_send", command, message: `Engine sent request: ${command}` });
+    sendJson(agent.socket, {
+      type: "request",
+      requestId,
+      command: String(command || ""),
+      payload,
+      quiet,
+    });
+  });
+  return { requestId, promise };
+}
+
+function readAgentEvents(pairingCodeRaw, options = {}) {
+  const pairingCode = cleanPairingCode(pairingCodeRaw);
+  const agent = agentsByCode.get(pairingCode);
+  const since = Number(options.since || 0);
+  const limit = Math.max(0, Math.min(2000, Number(options.limit || 100)));
+  const events = agent?.events || [];
+  const latestEventId = events.length ? events[events.length - 1].id : eventSeq;
+  return {
+    events: events.filter((event) => event.id > since).slice(-limit),
+    latestEventId,
+    online: Boolean(agent && isAgentOnline(agent)),
+  };
+}
+
+function requestMetaFromPayload(command, payload = {}) {
+  const context = payload?.context && typeof payload.context === "object" ? payload.context : {};
+  return {
+    command: cleanString(command, 80),
+    threadId: cleanString(payload?.threadId, 160),
+    threadTitle: cleanString(payload?.threadTitle, 240),
+    userMessage: cleanString(payload?.message, 12000),
+    remoteControlMode: cleanString(context.remoteControlMode, 40),
+  };
+}
+
+function pushAgentEvent(agent, requestId, rawEvent = {}) {
+  if (!agent) return null;
+  const now = new Date().toISOString();
+  const cleanRequestId = String(requestId || rawEvent.requestId || "");
+  const meta = cleanRequestId ? agent.requestMeta?.get(cleanRequestId) : null;
+  const event = {
+    id: ++eventSeq,
+    pairingCode: agent.pairingCode,
+    requestId: cleanRequestId,
+    threadId: rawEvent.threadId == null ? cleanString(meta?.threadId, 160) : cleanString(rawEvent.threadId, 160),
+    threadTitle: rawEvent.threadTitle == null ? cleanString(meta?.threadTitle, 240) : cleanString(rawEvent.threadTitle, 240),
+    userMessage: rawEvent.userMessage == null ? cleanString(meta?.userMessage, 12000) : cleanString(rawEvent.userMessage, 12000),
+    remoteControlMode: rawEvent.remoteControlMode == null ? cleanString(meta?.remoteControlMode, 40) : cleanString(rawEvent.remoteControlMode, 40),
+    kind: cleanString(rawEvent.kind || rawEvent.type || "event", 40),
+    stream: rawEvent.stream ? cleanString(rawEvent.stream, 40) : "",
+    text: rawEvent.text == null ? "" : cleanString(rawEvent.text, 12000),
+    message: rawEvent.message == null ? "" : cleanString(rawEvent.message, 12000),
+    command: rawEvent.command == null ? "" : cleanString(rawEvent.command, 1000),
+    cwd: rawEvent.cwd == null ? "" : cleanString(rawEvent.cwd, 500),
+    currentFile: rawEvent.currentFile == null ? "" : cleanString(rawEvent.currentFile, 1000),
+    eventsFile: rawEvent.eventsFile == null ? "" : cleanString(rawEvent.eventsFile, 1000),
+    at: rawEvent.at ? cleanString(rawEvent.at, 80) : now,
+  };
+  agent.events.push(event);
+  if (agent.events.length > MAX_EVENTS_PER_AGENT) {
+    agent.events.splice(0, agent.events.length - MAX_EVENTS_PER_AGENT);
+  }
+  return event;
+}
+
+function publicAgent(agent) {
+  if (!agent) return null;
+  return {
+    online: isAgentOnline(agent),
+    pairingCode: agent.pairingCode,
+    machineName: agent.machineName,
+    host: agent.host,
+    connectedAt: agent.connectedAt,
+    lastSeenAt: agent.lastSeenAt,
+  };
+}
+
+function isAgentOnline(agent) {
+  return Boolean(agent?.socket && agent.socket.readyState === WebSocket.OPEN);
+}
+
+function settleAll(agent, error) {
+  for (const pending of agent.pending.values()) {
+    clearTimeout(pending.timeout);
+    pending.reject(error);
+  }
+  agent.pending.clear();
+}
+
+function trimRequestMeta(agent) {
+  if (!agent?.requestMeta || agent.requestMeta.size <= MAX_REQUEST_META_PER_AGENT) return;
+  const excess = agent.requestMeta.size - MAX_REQUEST_META_PER_AGENT;
+  Array.from(agent.requestMeta.keys()).slice(0, excess).forEach((key) => agent.requestMeta.delete(key));
+}
+
+function sendJson(socket, payload) {
+  socket.send(JSON.stringify(payload));
+}
+
+function cleanPairingCode(value) {
+  return String(value || "")
+    .trim()
+    .toUpperCase()
+    .replace(/[^A-Z0-9]/g, "")
+    .slice(0, 32);
+}
+
+function cleanString(value, maxLength) {
+  return String(value || "").trim().slice(0, maxLength);
+}
+
+function sanitizeTimeoutMs(value, fallback) {
+  const numeric = Number(value || fallback);
+  if (!Number.isFinite(numeric)) return fallback;
+  return Math.max(1000, Math.min(12 * 60 * 60 * 1000, numeric));
+}
+
+function elapsedLabel(startedAt) {
+  const elapsed = Math.max(0, Date.now() - Number(startedAt || Date.now()));
+  if (elapsed < 1000) return `${elapsed}ms`;
+  return `${(elapsed / 1000).toFixed(1)}s`;
+}
+
+function asyncRoute(handler) {
+  return (req, res, next) => Promise.resolve(handler(req, res, next)).catch(next);
+}
+
+function requireInternalApi(req, res, next) {
+  if (!config.internalAccessToken) {
+    res.status(503).json({ ok: false, error: "ai_workspace_hub_token_not_configured" });
+    return;
+  }
+  const header = String(req.headers.authorization || "");
+  const token = header.startsWith("Bearer ") ? header.slice(7) : "";
+  if (!token || !safeEqual(token, config.internalAccessToken)) {
+    res.status(401).json({ ok: false, error: "ai_workspace_hub_unauthorized" });
+    return;
+  }
+  next();
+}
+
+function safeEqual(left, right) {
+  const leftBuffer = Buffer.from(String(left || ""));
+  const rightBuffer = Buffer.from(String(right || ""));
+  return leftBuffer.length === rightBuffer.length && crypto.timingSafeEqual(leftBuffer, rightBuffer);
+}
+
+function readConfig() {
+  return {
+    port: Number(process.env.PORT || 18081),
+    wsPath: process.env.AI_WORKSPACE_HUB_WS_PATH || DEFAULT_WS_PATH,
+    internalAccessToken: process.env.AI_WORKSPACE_HUB_TOKEN || process.env.NODEDC_INTERNAL_ACCESS_TOKEN || "",
+  };
+}
+
+function shutdown() {
+  clearInterval(heartbeat);
+  wss.close();
+  httpServer.close(() => {
+    process.exit(0);
+  });
+  setTimeout(() => process.exit(1), 5000).unref();
+}