使用firebase-queue返回任务结果 [英] Return task results using firebase-queue

问题描述

我正在使用Firebase开发移动应用程序。在移动应用程序中，我需要根据他/她的手机号码注册一个类似于Whatsapp的用户。我打算使用Nexmo来验证用户的手机号码。验证号码有两个步骤。
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1. 将用户手机号码发送到Nexmo API，并返回一个request_id成功，并通过短信向用户的手机发送代码


2. 将代码和request_id发送到Nexmo以验证号码

我想使用firebase-queue来执行这些任务。我想询问是否有办法将任务的结果返回给客户端。我没有在firebase-queue文档中看到这样的例子。基本上，我想添加一个任务来发送手机号码到Nexmo API，并希望得到request_id作为响应，以便我可以添加另一个任务来验证用户输入的代码。

解决方案

肯定有一种方法可以将响应反馈给客户端。我们在手电筒搜索集成中有一个很好的例子：

 函数doSearch（index，type，query）{
 var ref = new Firebase（URL +'/ search'） ; 
 var key = ref.child（'request'）。push（{index：index，type：type，query：query}）。 
 console.log（'search'，key，{index：index，type：type，query：query}）; 
 ref.child（'response /'+ key）.on（'value'，showResults）; 
 
 
 
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此代码在客户端JavaScript应用程序中运行，并将搜索条件调用 push（）的行中的服务器。然后等待响应返回到函数的最后一行。这里的关键在于它使用它发送请求的sam push id / key来侦听响应。这样的请求和响应匹配。
 
 
虽然Firebase Queue没有内置的握手支持，但您可以轻松地将其构建到客户端和服务器代码的应用程序。当您添加任务时，您将添加一个请求ID（来自 firebase-queue示例）： 
 
 
  var request_id = ref.push（）。key（）; 
 ref.child（'queue / tasks'）。push（{requestId：request_id，foo：'bar'}）; 
  
在您的任务工作者中，执行常规处理，然后将响应写回数据库相同的请求ID（来自 firebase-queue示例的适配器）：
  var ref = new Firebase（'https：//< your-firebase> .firebaseio.com / queue'）; 
 var responses = new Firebase（'https：//< your-firebase> .firebaseio.com / responses'）; 
 var queue = new Queue（ref，function（data，progress，resolve，reject）{
 //读取并处理任务数据
 console.log（data）; 
 
 //做一些工作
 progress（50）; 
 
 //异步完成任务
 setTimeout（function（）{
 //写入响应到客户端
 respond.child（data.requestId）.set（{allDone：true}）; 
 //告诉firebase-queue我们完成了
 resolve（）; 
}，1000）; 
}）; 
  
 
I am working on a mobile application using Firebase. In the mobile app, I need to register a user based on his/her mobile number similar to Whatsapp. I intend to use Nexmo to verify user's mobile number. There are two steps involved in verifying the number.

Send the the user mobile number to the Nexmo API and it returns back with a request_id on success and it also sends a code to user's mobile via SMS
Send the code and the request_id to the Nexmo to verify the number
I want to use firebase-queue to execute these tasks. I want to ask if there is a way to return results for a task back to the client. I didn't see any such example on the firebase-queue documentation. Basically, I want to add a task to send the mobile number to the Nexmo API and want to get the request_id in response so that I can add another task to verify the code entered by the user.
解决方案
There definitely is a way to get responses back to the client. We have a good example of that in the Flashlight search integration:
  function doSearch(index, type, query) {
      var ref = new Firebase(URL+'/search');
      var key = ref.child('request').push({ index: index, type: type, query: query }).key();
      console.log('search', key, { index: index, type: type, query: query });
      ref.child('response/'+key).on('value', showResults);
    }
This code runs in the client-side JavaScript application and sends a search term to the server in the line that calls push(). It then "waits" for a response to come back on the last line of the function. The key here is that it listens for a response with the sam push id/key that it used to send the request. That way the request and response match up.

While Firebase Queue doesn't have built-in support for such a "handshake", you can easily build it yourself into the client and server code of your app. When you add a task, you add a request id (adapter from the firebase-queue sample):
var request_id = ref.push().key();
ref.child('queue/tasks').push({ requestId: request_id, foo: 'bar' });
In your task worker, you perform your usual processing and then write the response back into the database with the same request id (adapter from the firebase-queue sample):
var ref = new Firebase('https://<your-firebase>.firebaseio.com/queue');
var responses = new Firebase('https://<your-firebase>.firebaseio.com/responses');
var queue = new Queue(ref, function(data, progress, resolve, reject) {
  // Read and process task data
  console.log(data);

  // Do some work
  progress(50);

  // Finish the task asynchronously
  setTimeout(function() {
    // write the response to the client
    responses.child(data.requestId).set({ allDone: true });
    // tell firebase-queue that we're done
    resolve();
  }, 1000);
});


                        
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