如何从后端运行Google App Engine端点方法

问题描述

我在我的应用程序引擎项目中遵循了我的WarmupServlet的所有配置步骤，并且看到它在启动时运行，但仍然看到我的第一个端点调用是加载请求，最多需要25秒，这是绝对不可接受的。我需要能够单独预热每个端点，以便不会有加载请求。 （显然，设置一个warmp-up servlet是不够的）。所以，我的问题是，我怎样才能在端点中调用一个方法，以便端点能够正确预热以便从WarmupServlet中提供服务？我在下面试过没有成功：

I have followed all the configuration steps for my WarmupServlet in my app engine project and I see it run at startup, but still I see my first endpoint call as a loading request which takes up to 25 seconds which is absolutely unacceptable. I need to be able to warm up each endpoint individually so that there will be no loading requests. (Apparently just setting up a warmp-up servlet is not enough.) So, my question is, how can I call a method in endpoints so that the endpoint is properly warmed up to serve from my WarmupServlet? I tried below with no success:

MyEndpoint me = new MyEndpoint();
me.getMyEntity(1L);

其中

where

@ApiMethod(name = "getMyEntity")
public MyEntity getMyEntity(@Named("id") Long id) {
    EntityManager mgr = getEntityManager();
    MyEntity myEntity = null;
    try {
        myEntity = mgr.find(MyEntity.class, id);
    } finally {
        mgr.close();
    }
    return myEntity;
}

推荐答案

文件作为库，这将正确地从Java后端加热MyEndpoint：

After adding the client endpoints jar file as a library, this properly warms up MyEndpoint from the Java backend:

NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();

Myendpoint.Builder endpointBuilder = new Myendpoint.Builder(
          HTTP_TRANSPORT,
          JSON_FACTORY,
          null);

endpointBuilder.setApplicationName("My App");
Myendpoint endpoint = endpointBuilder.build();
endpoint.getMyEntity(1L).execute();

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