In Eclipse 3.6 with Plugin v1.4.0 AppEngine 1.3.8 GWT 2.1.0 Local Task Queues no longer get executed.
To reproduce:
Create a new GWT and AppEngine project (I called the package "test2" below)
Add the following to GreetingServiceImpl greetServer() method before the return line:
final Queue queue = QueueFactory.getDefaultQueue();
queue.add(TaskOptions.Builder.url("/taskrunner").param("id",
UUID.randomUUID().toString()));
Create a class in the server package "TaskRunner" with the following:
public class TaskRunner extends HttpServlet {
@Override
public void doGet(final HttpServletRequest req, final HttpServletResponse resp) throws IOException {
System.out.println("TaskRunner");
}
@Override
public void doPost(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException {
System.out.println("TaskRunner");
}
}
Add the following to web.xml
<servlet>
<servlet-name>taskRunner</servlet-name>
<servlet-class>test2.server.TaskRunner</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>taskRunner</servlet-name>
<url-pattern>/taskrunner</url-pattern>
</servlet-mapping>
Run the project and click the GWT button. After about 10 seconds you will get the following exception on the console:
[ERROR] Job default.task1 threw an unhandled Exception:
com.google.apphosting.api.ApiProxy$ApplicationException:
ApplicationError: 2: Received exception executing http method POST
against URL http: //0.0.0.0:8888/taskrunner: No route to host: connect
at
com.google.appengine.api.urlfetch.dev.LocalURLFetchService.fetch(LocalURLFetchService.java:
239)
at com.google.appengine.api.labs.taskqueue.dev.LocalTaskQueue
$UrlFetchServiceLocalTaskQueueCallback.execute(LocalTaskQueue.java:
471)
at
com.google.appengine.api.labs.taskqueue.dev.UrlFetchJob.execute(UrlFetchJob.java:
77)
at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
at org.quartz.simpl.SimpleThreadPool
$WorkerThread.run(SimpleThreadPool.java:520)
[ERROR] Job (default.task1 threw an exception.
org.quartz.SchedulerException: Job threw an unhandled exception. [See
nested exception: com.google.apphosting.api.ApiProxy
$ApplicationException: ApplicationError: 2: Received exception
executing http method POST against URL http: //0.0.0.0:8888/taskrunner:
No route to host: connect]
at org.quartz.core.JobRunShell.run(JobRunShell.java:214)
at org.quartz.simpl.SimpleThreadPool
$WorkerThread.run(SimpleThreadPool.java:520)
* Nested Exception (Underlying Cause) ---------------
com.google.apphosting.api.ApiProxy$ApplicationException:
ApplicationError: 2: Received exception executing http method POST
against URL http: //0.0.0.0:8888/taskrunner: No route to host: connect
at
com.google.appengine.api.urlfetch.dev.LocalURLFetchService.fetch(LocalURLFetchService.java:
239)
at com.google.appengine.api.labs.taskqueue.dev.LocalTaskQueue
$UrlFetchServiceLocalTaskQueueCallback.execute(LocalTaskQueue.java:
471)
at
com.google.appengine.api.labs.taskqueue.dev.UrlFetchJob.execute(UrlFetchJob.java:
77)
at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
at org.quartz.simpl.SimpleThreadPool
$WorkerThread.run(SimpleThreadPool.java:520)
Remove GWT from the project and it works! To test this:
Add server class
public class TaskRunnerTest extends HttpServlet {
public void doGet(final HttpServletRequest req, final HttpServletResponse resp) throws IOException {
final Queue queue = QueueFactory.getDefaultQueue();
queue.add(TaskOptions.Builder.url("/taskrunner").param("id", UUID.randomUUID().toString()));
}
}
Add to web.xml
<servlet>
<servlet-name>taskRunnerTest</servlet-name>
<servlet-class>test2.server.TaskRunnerTest</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>taskRunnerTest</servlet-name>
<url-pattern>/taskrunnertest</url-pattern>
</servlet-mapping>
Remove GWT from the Project (uncheck use GWT) and hit http://127.0.0.1:8888/taskrunnertest - no exception is thrown. (With GWT enabled that url throws the exception).
This used to work with GWT enabled. Please can someone advise a fix as its cost me 2 days so far.
Thanks!
