Vaadin with Maven on Google App Engine (GAE)

General
1

Hi,

i have created a vaadin project with should be deployed to google app engine. And as i like maven, i used it to manage dependencies and so on.
Everything seems to work fine: Even the deployment to app engine or devserver (of app engine) is working. Sadly, if i access the webpage, i get the following exception on the console (extract).

[INFO]
 Okt 14, 2013 11:23:42 AM com.google.appengine.tools.development.DevAppServerImpl doStart
[INFO]
 INFO: Dev App Server is now running
[INFO]
 Okt 14, 2013 11:23:55 AM com.vaadin.server.DefaultDeploymentConfiguration checkProductionMode
[INFO]
 WARNING:
[INFO]
 =================================================================
[INFO]
 Vaadin is running in DEBUG MODE.
[INFO]
 Add productionMode=true to web.xml to disable debug features.
[INFO]
 To show debug window, add ?debug to your application URL.
[INFO]
 =================================================================
[INFO]
 Okt 14, 2013 11:23:55 AM org.atmosphere.cpr.AtmosphereFramework addAtmosphereHandler
[INFO]
 INFO: Installed AtmosphereHandler com.vaadin.server.communication.PushHandler mapped to context-path: /*
[INFO]
 Okt 14, 2013 11:23:55 AM org.atmosphere.cpr.DefaultBroadcaster <init>
[INFO]
 INFO: /* support Out Of Order Broadcast: false
[INFO]
 Okt 14, 2013 11:23:55 AM org.atmosphere.cpr.AtmosphereFramework configureBroadcaster
[INFO]
 SEVERE: Unable to configure Broadcaster/Factory/Cache
[INFO]
 org.atmosphere.cpr.DefaultBroadcasterFactory$BroadcasterCreationException: java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "modifyThreadGroup")
[INFO]
     at org.atmosphere.cpr.DefaultBroadcasterFactory.createBroadcaster(DefaultBroadcasterFactory.java:189)
[INFO]
     at org.atmosphere.cpr.DefaultBroadcasterFactory.lookup(DefaultBroadcasterFactory.java:263)
[INFO]
     at org.atmosphere.cpr.DefaultBroadcasterFactory.get(DefaultBroadcasterFactory.java:162)
[INFO]
     at org.atmosphere.cpr.DefaultBroadcasterFactory.get(DefaultBroadcasterFactory.java:147)

Could someone point me to direction how to fix the modifyThreadGroup problem? Possibly it is a simple issue, but i am not that experienced with vaadin.

Some more details:
Vaadin 7.1.6
GAE 1.8.5
maven 3

Thanks
klaus

2

Is there a resolution to this issue? I am running Vaadin 7.1.8 in GAE and I continue to get this error.

=============

E2013-12-17 21:54:07.578 org.atmosphere.cpr.AtmosphereFramework configureBroadcaster: Unable to configure Broadcaster/Factory/Cache org.atmosphere.cpr.DefaultBroadcasterFactor

I2013-12-17 21:54:07.581 org.atmosphere.cpr.AtmosphereFramework autoDetectWebSocketHandler: Auto detecting WebSocketHandler in /WEB-INF/classes/

I2013-12-17 21:54:08.984 org.atmosphere.cpr.AtmosphereFramework initWebSocket: Installed WebSocketProtocol org.atmosphere.websocket.protocol.SimpleHttpProtocol

I2013-12-17 21:54:09.073 org.atmosphere.cpr.AtmosphereFramework autoDetectContainer: Atmosphere is using async support: org.atmosphere.container.BlockingIOCometSupport running

I2013-12-17 21:54:09.160 org.atmosphere.cpr.AtmosphereFramework configureAtmosphereInterceptor: Installed Default AtmosphereInterceptor [Android Interceptor Support, SSE Inter

I2013-12-17 21:54:09.160 org.atmosphere.cpr.AtmosphereFramework init: Shared ExecutorService supported: true

I2013-12-17 21:54:09.160 org.atmosphere.cpr.AtmosphereFramework init: HttpSession supported: true

I2013-12-17 21:54:09.160 org.atmosphere.cpr.AtmosphereFramework init: Using BroadcasterFactory: org.atmosphere.cpr.DefaultBroadcasterFactory

W2013-12-17 21:54:09.160 org.atmosphere.cpr.AtmosphereFramework init: No BroadcasterCache configured. Broadcasted message between client reconnection will be LOST. It is recom

I2013-12-17 21:54:09.161 org.atmosphere.cpr.AtmosphereFramework init: Using WebSocketProcessor: org.atmosphere.websocket.DefaultWebSocketProcessor

I2013-12-17 21:54:09.161 org.atmosphere.cpr.AtmosphereFramework init: Using Broadcaster: org.atmosphere.cpr.DefaultBroadcaster

I2013-12-17 21:54:09.161 org.atmosphere.cpr.AtmosphereFramework init: Atmosphere Framework 1.0.14.vaadin4 started.

I2013-12-17 21:54:09.164 org.atmosphere.cpr.AtmosphereFramework interceptor: Installed AtmosphereInterceptor Track Message Size Interceptor using |.

I2013-12-17 21:54:11.063 This request caused a new process to be started for your application, and thus caused your application code to be loaded for the first time. This requ

3

While there may well be other issues as well, this one might be resolvable by removing the dependency to vaadin-push.
The current push implementation does not support GAE (which has its own push APIs rather than using the standard ones) anyway.

4

Coud anyone provide a tutorial on how to work with Vaadin 7 + Maven + GAE. I haven’t been able to make it work. More over, even if i did, it would be nice to see a full project working with these tools.

The best example would probably be the dashboard example. Let me know if such tutorial or a similar one is available. Every documentation or tutorial (even outside of Vaadin) is outdated. Refering either to the old gae plugin, to an earlier versión of vaadin or both.

I found this which could be helpful if it wasn’t because its from 2010. http://www.streamhead.com/maven-spring-vaadin-appengine/

There is also this video, which is help and more updated but does not use Maven http://www.youtube.com/watch?v=oTAK-NGs9ng&list=UUVZnufT1ZTHVnyKxScRsSsA&index=1

Please help.