feat(M06-A): 建立MQTT连接与Broker基础

backend/src/config.ts

@@ -21,8 +21,12 @@ const configSchema = z.object({
   QIPAI_PROFIT_SHARE_MOCK_ENABLED: z.enum(['true', 'false']).default('false'),
   QIPAI_THIRD_PARTY_CREDENTIALS: z.string().default('{}'),
   QIPAI_MQTT_URL: z.string().url().default('mqtt://101.42.38.246:1883'),
+  QIPAI_MQTT_CLIENT_ID: z.string().min(1).max(128).default('qipai-backend'),
   QIPAI_MQTT_USERNAME: z.string().default(''),
-  QIPAI_MQTT_PASSWORD: z.string().default('')
+  QIPAI_MQTT_PASSWORD: z.string().default(''),
+  QIPAI_MQTT_RECONNECT_MS: z.coerce.number().int().min(1000).max(60000).default(3000),
+  QIPAI_MQTT_CONNECT_TIMEOUT_MS: z.coerce.number().int().min(1000).max(60000).default(10000),
+  QIPAI_MQTT_MAX_MESSAGE_BYTES: z.coerce.number().int().min(1024).max(1048576).default(65536)
 });
 
 export type AppConfig = ReturnType<typeof loadConfig>;
@@ -35,6 +39,14 @@ export function loadConfig(env: NodeJS.ProcessEnv = process.env) {
   ) {
     throw new Error('QIPAI_JWT_SECRET must be explicitly configured in production.');
   }
+  const mqttUsernameConfigured = parsed.QIPAI_MQTT_USERNAME.length > 0;
+  const mqttPasswordConfigured = parsed.QIPAI_MQTT_PASSWORD.length > 0;
+  if (mqttUsernameConfigured !== mqttPasswordConfigured) {
+    throw new Error('QIPAI_MQTT_USERNAME and QIPAI_MQTT_PASSWORD must be configured together.');
+  }
+  if (parsed.NODE_ENV === 'production' && !mqttUsernameConfigured) {
+    throw new Error('MQTT credentials must be explicitly configured in production.');
+  }
 
   return {
     nodeEnv: parsed.NODE_ENV,
@@ -69,8 +81,14 @@ export function loadConfig(env: NodeJS.ProcessEnv = process.env) {
     },
     mqtt: {
       url: parsed.QIPAI_MQTT_URL,
-      usernameConfigured: parsed.QIPAI_MQTT_USERNAME.length > 0,
-      passwordConfigured: parsed.QIPAI_MQTT_PASSWORD.length > 0
+      clientId: parsed.QIPAI_MQTT_CLIENT_ID,
+      username: parsed.QIPAI_MQTT_USERNAME,
+      credential: parsed.QIPAI_MQTT_PASSWORD,
+      usernameConfigured: mqttUsernameConfigured,
+      passwordConfigured: mqttPasswordConfigured,
+      reconnectPeriodMs: parsed.QIPAI_MQTT_RECONNECT_MS,
+      connectTimeoutMs: parsed.QIPAI_MQTT_CONNECT_TIMEOUT_MS,
+      maxMessageBytes: parsed.QIPAI_MQTT_MAX_MESSAGE_BYTES
     }
   };
 }