Google App Engine中的进度条 [英] Progress bar in Google App Engine

问题描述

我有一个Google App Engine应用程序，可以对远程API执行30-50次调用。每个电话都需要一秒钟左右的时间，因此整个操作可能需要一分钟。目前，我在我的站点的post（）函数内的一个循环中执行此操作，因此在整个操作完成之前不会打印响应。毋庸置疑，该应用目前还不是很实用。

我想要做的是在操作开始后立即打印响应，然后在每个单独的API调用完成时更新它。我将如何实现这一目标？在桌面应用程序中，我只需启动一个定期更新前端的工作线程。 Google App Engine中是否有类似的机制？

我搜索了进度条和谷歌应用程序引擎，但大多数结果来自想要监视的人上传文件的进度。我的情况不同：服务器上正在执行耗时的任务，所以客户端无法监控其进度。 这家伙是我能找到的最接近的东西，但他工作在Java。 使用 =http://code.google.com/appengine/docs/python/taskqueue =nofollow> http://code.google.com/appengine/docs/python/taskqueue

更改进程的逻辑以设置状态（可以使用memcache）

每隔10秒使用AJAX查询memcache状态，或多或少，由您决定

I have a Google App Engine application that performs about 30-50 calls to a remote API. Each call takes about a second, so the whole operation can easily take a minute. Currently, I do this in a loop inside the post() function of my site, so the response isn't printed until the whole operation completes. Needless to say, the app isn't very usable at the moment.

What I would like to do is to print the response immediately after the operation is started, and then update it as each individual API call completes. How would I achieve this? On a desktop application, I would just kick off a worker thread that would periodically update the front-end. Is there a similar mechanism in the Google App Engine?

I googled around for "progress bar" and "google app engine" but most results are from people that want to monitor the progress of uploading a file. My situation is different: the time-consuming task is being performed on the server, so there isn't much the client can do to monitor its progress. This guy is the closest thing I could find, but he works in Java.

解决方案

1. Send the post logic to a task using http://code.google.com/appengine/docs/python/taskqueue
2. Change the logic of the process to set a status (it could be using memcache)
3. Using AJAX query memcache status each 10 seconds, more or less, it's up to you

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