feat: Upgrade Redis 3 to 4 for LiveQuery (parse-community#8333)

dblythy · web-flow · commit b2761fb3786b · 2022-11-26T17:45:30.000+01:00
diff --git a/spec/ParseGraphQLServer.spec.js b/spec/ParseGraphQLServer.spec.js
@@ -432,7 +432,7 @@ describe('ParseGraphQLServer', () => {
       const expressApp = express();
       httpServer = http.createServer(expressApp);
       expressApp.use('/parse', parseServer.app);
-      parseLiveQueryServer = ParseServer.createLiveQueryServer(httpServer, {
+      parseLiveQueryServer = await ParseServer.createLiveQueryServer(httpServer, {
         port: 1338,
       });
       parseGraphQLServer.applyGraphQL(expressApp);
diff --git a/spec/ParseLiveQueryRedis.spec.js b/spec/ParseLiveQueryRedis.spec.js
@@ -0,0 +1,56 @@
+if (process.env.PARSE_SERVER_TEST_CACHE === 'redis') {
+  describe('ParseLiveQuery redis', () => {
+    afterEach(async () => {
+      const client = await Parse.CoreManager.getLiveQueryController().getDefaultLiveQueryClient();
+      client.close();
+    });
+    it('can connect', async () => {
+      await reconfigureServer({
+        startLiveQueryServer: true,
+        liveQuery: {
+          classNames: ['TestObject'],
+          redisURL: 'redis://localhost:6379',
+        },
+        liveQueryServerOptions: {
+          redisURL: 'redis://localhost:6379',
+        },
+      });
+      const subscription = await new Parse.Query('TestObject').subscribe();
+      const [object] = await Promise.all([
+        new Parse.Object('TestObject').save(),
+        new Promise(resolve =>
+          subscription.on('create', () => {
+            resolve();
+          })
+        ),
+      ]);
+      await Promise.all([
+        new Promise(resolve =>
+          subscription.on('delete', () => {
+            resolve();
+          })
+        ),
+        object.destroy(),
+      ]);
+    });
+
+    it('can call connect twice', async () => {
+      const server = await reconfigureServer({
+        startLiveQueryServer: true,
+        liveQuery: {
+          classNames: ['TestObject'],
+          redisURL: 'redis://localhost:6379',
+        },
+        liveQueryServerOptions: {
+          redisURL: 'redis://localhost:6379',
+        },
+      });
+      expect(server.config.liveQueryController.liveQueryPublisher.parsePublisher.isOpen).toBeTrue();
+      await server.config.liveQueryController.connect();
+      expect(server.config.liveQueryController.liveQueryPublisher.parsePublisher.isOpen).toBeTrue();
+      expect(server.liveQueryServer.subscriber.isOpen).toBe(true);
+      await server.liveQueryServer.connect();
+      expect(server.liveQueryServer.subscriber.isOpen).toBe(true);
+    });
+  });
+}
diff --git a/spec/ParseLiveQueryServer.spec.js b/spec/ParseLiveQueryServer.spec.js
@@ -94,29 +94,29 @@ describe('ParseLiveQueryServer', function () {
     expect(parseLiveQueryServer.subscriptions.size).toBe(0);
   });
 
-  it('can be initialized from ParseServer', function () {
+  it('can be initialized from ParseServer', async () => {
     const httpServer = {};
-    const parseLiveQueryServer = ParseServer.createLiveQueryServer(httpServer, {});
+    const parseLiveQueryServer = await ParseServer.createLiveQueryServer(httpServer, {});
 
     expect(parseLiveQueryServer.clientId).toBeUndefined();
     expect(parseLiveQueryServer.clients.size).toBe(0);
     expect(parseLiveQueryServer.subscriptions.size).toBe(0);
   });
 
-  it('can be initialized from ParseServer without httpServer', function (done) {
-    const parseLiveQueryServer = ParseServer.createLiveQueryServer(undefined, {
+  it('can be initialized from ParseServer without httpServer', async () => {
+    const parseLiveQueryServer = await ParseServer.createLiveQueryServer(undefined, {
       port: 22345,
     });
 
     expect(parseLiveQueryServer.clientId).toBeUndefined();
     expect(parseLiveQueryServer.clients.size).toBe(0);
     expect(parseLiveQueryServer.subscriptions.size).toBe(0);
-    parseLiveQueryServer.server.close(done);
+    await new Promise(resolve => parseLiveQueryServer.server.close(resolve));
   });
 
   describe_only_db('mongo')('initialization', () => {
-    it('can be initialized through ParseServer without liveQueryServerOptions', function (done) {
-      const parseServer = ParseServer.start({
+    it('can be initialized through ParseServer without liveQueryServerOptions', async function (done) {
+      const parseServer = await ParseServer.start({
         appId: 'hello',
         masterKey: 'world',
         port: 22345,
@@ -137,8 +137,8 @@ describe('ParseLiveQueryServer', function () {
       });
     });
 
-    it('can be initialized through ParseServer with liveQueryServerOptions', function (done) {
-      const parseServer = ParseServer.start({
+    it('can be initialized through ParseServer with liveQueryServerOptions', async function (done) {
+      const parseServer = await ParseServer.start({
         appId: 'hello',
         masterKey: 'world',
         port: 22346,
diff --git a/spec/RedisPubSub.spec.js b/spec/RedisPubSub.spec.js
@@ -15,7 +15,8 @@ describe('RedisPubSub', function () {
     });
 
     const redis = require('redis');
-    expect(redis.createClient).toHaveBeenCalledWith('redisAddress', {
+    expect(redis.createClient).toHaveBeenCalledWith({
+      url: 'redisAddress',
       socket_keepalive: true,
       no_ready_check: true,
     });
@@ -28,7 +29,8 @@ describe('RedisPubSub', function () {
     });
 
     const redis = require('redis');
-    expect(redis.createClient).toHaveBeenCalledWith('redisAddress', {
+    expect(redis.createClient).toHaveBeenCalledWith({
+      url: 'redisAddress',
       socket_keepalive: true,
       no_ready_check: true,
     });
diff --git a/spec/helper.js b/spec/helper.js
@@ -173,17 +173,19 @@ const reconfigureServer = (changedConfiguration = {}) => {
         port,
       });
       cache.clear();
-      parseServer = ParseServer.start(newConfiguration);
-      parseServer.expressApp.use('/1', err => {
-        console.error(err);
-        fail('should not call next');
-      });
-      server = parseServer.server;
-      server.on('connection', connection => {
-        const key = `${connection.remoteAddress}:${connection.remotePort}`;
-        openConnections[key] = connection;
-        connection.on('close', () => {
-          delete openConnections[key];
+      ParseServer.start(newConfiguration).then(_parseServer => {
+        parseServer = _parseServer;
+        parseServer.expressApp.use('/1', err => {
+          console.error(err);
+          fail('should not call next');
+        });
+        server = parseServer.server;
+        server.on('connection', connection => {
+          const key = `${connection.remoteAddress}:${connection.remotePort}`;
+          openConnections[key] = connection;
+          connection.on('close', () => {
+            delete openConnections[key];
+          });
         });
       });
     } catch (error) {
diff --git a/src/Adapters/PubSub/RedisPubSub.js b/src/Adapters/PubSub/RedisPubSub.js
@@ -2,12 +2,12 @@ import { createClient } from 'redis';
 
 function createPublisher({ redisURL, redisOptions = {} }): any {
   redisOptions.no_ready_check = true;
-  return createClient(redisURL, redisOptions);
+  return createClient({ url: redisURL, ...redisOptions });
 }
 
 function createSubscriber({ redisURL, redisOptions = {} }): any {
   redisOptions.no_ready_check = true;
-  return createClient(redisURL, redisOptions);
+  return createClient({ url: redisURL, ...redisOptions });
 }
 
 const RedisPubSub = {
diff --git a/src/Controllers/LiveQueryController.js b/src/Controllers/LiveQueryController.js
@@ -21,6 +21,10 @@ export class LiveQueryController {
     this.liveQueryPublisher = new ParseCloudCodePublisher(config);
   }
 
+  connect() {
+    return this.liveQueryPublisher.connect();
+  }
+
   onAfterSave(
     className: string,
     currentObject: any,
diff --git a/src/LiveQuery/ParseCloudCodePublisher.js b/src/LiveQuery/ParseCloudCodePublisher.js
@@ -11,6 +11,15 @@ class ParseCloudCodePublisher {
     this.parsePublisher = ParsePubSub.createPublisher(config);
   }
 
+  async connect() {
+    if (typeof this.parsePublisher.connect === 'function') {
+      if (this.parsePublisher.isOpen) {
+        return;
+      }
+      return Promise.resolve(this.parsePublisher.connect());
+    }
+  }
+
   onCloudCodeAfterSave(request: any): void {
     this._onCloudCodeMessage(Parse.applicationId + 'afterSave', request);
   }
diff --git a/src/LiveQuery/ParseLiveQueryServer.js b/src/LiveQuery/ParseLiveQueryServer.js
@@ -73,15 +73,25 @@ class ParseLiveQueryServer {
       parseWebsocket => this._onConnect(parseWebsocket),
       config
     );
-
-    // Initialize subscriber
     this.subscriber = ParsePubSub.createSubscriber(config);
-    this.subscriber.subscribe(Parse.applicationId + 'afterSave');
-    this.subscriber.subscribe(Parse.applicationId + 'afterDelete');
-    this.subscriber.subscribe(Parse.applicationId + 'clearCache');
-    // Register message handler for subscriber. When publisher get messages, it will publish message
-    // to the subscribers and the handler will be called.
-    this.subscriber.on('message', (channel, messageStr) => {
+    if (!this.subscriber.connect) {
+      this.connect();
+    }
+  }
+
+  async connect() {
+    if (this.subscriber.isOpen) {
+      return;
+    }
+    if (typeof this.subscriber.connect === 'function') {
+      await Promise.resolve(this.subscriber.connect());
+    } else {
+      this.subscriber.isOpen = true;
+    }
+    this._createSubscribers();
+  }
+  _createSubscribers() {
+    const messageRecieved = (channel, messageStr) => {
       logger.verbose('Subscribe message %j', messageStr);
       let message;
       try {
@@ -102,7 +112,12 @@ class ParseLiveQueryServer {
       } else {
         logger.error('Get message %s from unknown channel %j', message, channel);
       }
-    });
+    };
+    this.subscriber.on('message', (channel, messageStr) => messageRecieved(channel, messageStr));
+    for (const field of ['afterSave', 'afterDelete', 'clearCache']) {
+      const channel = `${Parse.applicationId}${field}`;
+      this.subscriber.subscribe(channel, messageStr => messageRecieved(channel, messageStr));
+    }
   }
 
   // Message is the JSON object from publisher. Message.currentParseObject is the ParseObject JSON after changes.
diff --git a/src/ParseServer.js b/src/ParseServer.js
@@ -77,7 +77,12 @@ class ParseServer {
 
     const allControllers = controllers.getControllers(options);
 
-    const { loggerController, databaseController, hooksController } = allControllers;
+    const {
+      loggerController,
+      databaseController,
+      hooksController,
+      liveQueryController,
+    } = allControllers;
     this.config = Config.put(Object.assign({}, options, allControllers));
 
     logging.setLogger(loggerController);
@@ -98,6 +103,7 @@ class ParseServer {
         ) {
           startupPromises.push(options.cacheAdapter.connect());
         }
+        startupPromises.push(liveQueryController.connect());
         await Promise.all(startupPromises);
         if (serverStartComplete) {
           serverStartComplete();
@@ -263,7 +269,7 @@ class ParseServer {
    * @param {Function} callback called when the server has started
    * @returns {ParseServer} the parse server instance
    */
-  start(options: ParseServerOptions, callback: ?() => void) {
+  async start(options: ParseServerOptions, callback: ?() => void) {
     const app = express();
     if (options.middleware) {
       let middleware;
@@ -307,7 +313,7 @@ class ParseServer {
     this.server = server;
 
     if (options.startLiveQueryServer || options.liveQueryServerOptions) {
-      this.liveQueryServer = ParseServer.createLiveQueryServer(
+      this.liveQueryServer = await ParseServer.createLiveQueryServer(
         server,
         options.liveQueryServerOptions,
         options
@@ -338,9 +344,9 @@ class ParseServer {
    * @param {Server} httpServer an optional http server to pass
    * @param {LiveQueryServerOptions} config options for the liveQueryServer
    * @param {ParseServerOptions} options options for the ParseServer
-   * @returns {ParseLiveQueryServer} the live query server instance
+   * @returns {Promise<ParseLiveQueryServer>} the live query server instance
    */
-  static createLiveQueryServer(
+  static async createLiveQueryServer(
     httpServer,
     config: LiveQueryServerOptions,
     options: ParseServerOptions
@@ -350,7 +356,9 @@ class ParseServer {
       httpServer = require('http').createServer(app);
       httpServer.listen(config.port);
     }
-    return new ParseLiveQueryServer(httpServer, config, options);
+    const server = new ParseLiveQueryServer(httpServer, config, options);
+    await server.connect();
+    return server;
   }
 
   static verifyServerUrl(callback) {

Original file line number	Diff line number	Diff line change
`@@ -2,12 +2,12 @@ import { createClient } from 'redis';`
`2`	`2`
`3`	`3`	`function createPublisher({ redisURL, redisOptions = {} }): any {`
`4`	`4`	`redisOptions.no_ready_check = true;`
`5`		`- return createClient(redisURL, redisOptions);`
	`5`	`+ return createClient({ url: redisURL, ...redisOptions });`
`6`	`6`	`}`
`7`	`7`
`8`	`8`	`function createSubscriber({ redisURL, redisOptions = {} }): any {`
`9`	`9`	`redisOptions.no_ready_check = true;`
`10`		`- return createClient(redisURL, redisOptions);`
	`10`	`+ return createClient({ url: redisURL, ...redisOptions });`
`11`	`11`	`}`
`12`	`12`
`13`	`13`	`const RedisPubSub = {`