Question

im在解析LiveQuery时遇到问题，正如我看到的很多人那样。现在，从日志看来，我设法订阅了“ ParseLiveQuery”

但是当我更改值，创建新行并更新back4app仪表板中的relevent属性时：没发生

1.server正在运行，并显示客户端连接 2.app控制台收到一条日志，该日志显然显示我已成功订阅 3.我更改了仪表板中的属性

然后... 没发生

请帮助

这是我的解析服务器代码：

ParseServer node.js代码

var express = require('express');
var ParseServer = require('parse-server').ParseServer;
var path = require('path');

var databaseUri = process.env.DATABASE_URI || process.env.MONGODB_URI;

if (!databaseUri) {
  console.log('DATABASE_URI not specified, falling back to localhost.');
}



var api = new ParseServer({
  databaseURI: databaseUri ,
  cloud: process.env.CLOUD_CODE_MAIN || __dirname + '/cloud/main.js',
  appId: process.env.APP_ID ,
  masterKey: process.env.MASTER_KEY , //Add your master key here. Keep it secret!
  serverURL: process.env.SERVER_URL || 'http://localhost:1323/parse',  // Don't forget to change to https if needed

});
// Client-keys like the javascript key or the .NET key are not necessary with parse-server
// If you wish you require them, you can set them as options in the initialization above:
// javascriptKey, restAPIKey, dotNetKey, clientKey

var app = express();

// Serve static assets from the /public folder
app.use('/public', express.static(path.join(__dirname, '/public')));

// Serve the Parse API on the /parse URL prefix
var mountPath = process.env.PARSE_MOUNT || '/parse';
app.use(mountPath, api);

// Parse Server plays nicely with the rest of your web routes
app.get('/', function(req, res) {
  res.status(200).send('I dream of being a website.  Please star the parse-server repo on GitHub!');
});

// There will be a test page available on the /test path of your server url
// Remove this before launching your app
app.get('/test', function(req, res) {
  res.sendFile(path.join(__dirname, '/public/test.html'));
});

var port = process.env.PORT || 1323;
var httpServer = require('http').createServer(app);
httpServer.listen(port, function() {
    console.log('parse-server-example running on port ' + port + '.');
});

// This will enable the Live Query real-time server
//ParseServer.createLiveQueryServer(httpServer);
var parseLiveQueryServer = ParseServer.createLiveQueryServer(httpServer, {
  appId: APP_ID',
  masterKey: MASTER_KEY,
  serverURL: 'http://localhost:1323/parse',
  radisUrl:api.radisUrl,
  classNames:['Comments'],
  keyPairs: {
    "javascriptKey": JAVA_KEY,
    "clientKey": "CLIENT_KRY"
  },
  websocketTimeout: 10 * 1000,
  cacheTimeout: 60 * 600 * 1000,
  logLevel: 'VERBOSE',

});

api.liveQuery = parseLiveQueryServer

//parseLiveQueryServer()

应用代码：

class Comment:PFObject,PFSubclassing {
    static func parseClassName() -> String {
        return "Comment"
    }
}

   var client:Client!
   var subscription: Subscription<Comment>?




 client = Client(server: "http://localhost:1323/parse", applicationId: app_id, clientKey: client_key)

        client.shouldPrintWebSocketTrace = true

        let query: PFQuery<Comment> = PFQuery<Comment>(className: "Comments").whereKey("NeedUpdate", equalTo: true)

        subscription = client.subscribe(query).handleEvent({ (comment, event) in
            print("event !")
        })

在运行我的应用程序时，我收到此日志：（我更改了键值（clientKey，appid）

2019-07-23 17：51：30.060457 + 0300 ParseLiveTest [90973：4911897] ParseLiveQuery：发送消息：{“ sessionToken”：“”，“ op”：“ connect”，“ applicationId”：“ applicationId”， “ clientKey”：“ clientKey”} 2019-07-23 17：51：30.063077 + 0300 ParseLiveTest [90973：4911909] ParseLiveQuery：收到消息：{“ op”：“ connected”，“ clientId”：“ f96ce095-45d8-476b-8be9-dd86b1a88d9f”} 2019-07-23 17：51：30.064071 + 0300 ParseLiveTest [90973：4911909] ParseLiveQuery：发送消息：{“ op”：“ subscribe”，“ query”：{“ where”：{“ NeedUpdate”：true}，“ className“：”评论“}，” requestId“：1} 2019-07-23 17：51：30.064920 + 0300 ParseLiveTest [90973：4911909] ParseLiveQuery：收到消息：{“ op”：“已订阅”，“ clientId”：“ f96ce095-45d8-476b-8be9-dd86b1a88d9f”，“ requestId” “：1}

我也尝试在我的Appdelegte中设置订阅协议：而所有进入日志的是“ didSubscribe” 从方法中：

func didSubscribe(toQuery query: PFQuery<Comment>, inClient client: Client

完整代码如下：

client.subscribe(query, handler: self)


extension AppDelegate:  SubscriptionHandling {
    func didReceive(_ event: Event<Comment>, forQuery query: PFQuery<Comment>, inClient client: Client) {
        print("didReceive")
    }

    func didEncounter(_ error: Error, forQuery query: PFQuery<Comment>, inClient client: Client) {
        print("didEncounter")

    }

    func didSubscribe(toQuery query: PFQuery<Comment>, inClient client: Client) {
        print("didSubscribe")

    }

    func didUnsubscribe(fromQuery query: PFQuery<Comment>, inClient client: Client) {
        print("didUnsubscribe")

    }

    typealias PFObjectSubclass = Comment


}

解析LiveQuery订阅未调用处理程序

0 个答案: