是否已弃用Maven目标appengine：backends_configure？

Question

The following command says that there's a goal called "appengine:backends_configure" for the Google App Engine Maven Plugin ( https://code.google.com/p/appengine-maven-plugin/ )?

I see this goal is available when I run this command:

mvn help:describe -Dplugin=appengine

Here's what it looks like:

mosofskcbookpro:myguestbooktrial mosofsky$ mvn help:describe -Dplugin=appengine [INFO] Scanning for projects... [INFO] [INFO] Using the builder org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder with a thread count of 1 [INFO]
[INFO] ------------------------------------------------------------------------ [INFO] Building myguestbooktrial 1.0-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-help-plugin:2.2:describe (default-cli) @ myguestbooktrial --- [INFO] com.google.appengine:appengine-maven-plugin:1.9.14

Name: A Maven Plugin for running and deploying appengine applications Description: The App Engine maven plugin which can be used to interact with both the development server and the remote runtime. Group Id: com.google.appengine Artifact Id: appengine-maven-plugin Version: 1.9.14 Goal Prefix: appengine

This plugin has 29 goals:

appengine:backends_configure Description: Configure the specified backend. ...

According to Google, though, backends are deprecated ( https://cloud.google.com/appengine/docs/java/config/backends ).

So is the appengine-maven-plugin just out of date? When it refers to backends, is that the deprecated backend or some other backend? Is there a new version of appengine-maven-plugin that can configure modules?

Answer 1

You can use modules with the appengine-maven-plugin by creating an Enterprise Archive (EAR) project and putting each module in it's own WAR. A contributor's example project which does this is at [1]. Using Maven with modules has some limitations, like not being able to share the same datastore on the development server. In this case you'd want to set up an Eclipse WTP project as per [2].

The documentation on this is somewhat lacking, and it would be nice if Google provided an archetype for using modules.

[1] https://github.com/GoogleCloudPlatform/appengine-modules-sample-java
[2] Serving multiple GAE modules from one development server?

As far as 'appengine:backends_configure' goes, since backends are still supported for now I assume the goal isn't going away any time soon.