appengine devserver пренасочва приложението при първа заявка

Използвам maven за изграждане на приложение на google appengine. След като devserver стартира, когато приложението, достъпно от клиента при първата заявка, приложението се преразпределя и ServletListener се изпълнява отново. В този процес контекстът на сървлета се губи. Използвам контекст на сервлет, за да съхранявам списъка на свързаните клиенти. Сега, тъй като приложението беше повторно разпределено автоматично и контекстът на сервлета е изчистен, губя информацията, че първият клиент е бил свързан. Контекстът на сървлета съхранява всички следващи клиенти, свързани, докато сървърът за разработка бъде спрян.

Причината изглежда, че някакъв клас файл е промяна, която не би трябвало, след като devserver работи.

25 юни 2013 г. 6:31:31 ч. com.google.appengine.tools.development.JettyContainerService$2 filesChanged [ИНФОРМАЦИЯ] ИНФОРМАЦИЯ: Файлът е променен, презарежда уеб приложението.

Следва пълният дневник

[INFO] 
[INFO] --- maven-war-plugin:2.1.1:war (default-war) @ NoteWebApp ---
[INFO] Packaging webapp
[INFO] Assembling webapp [NoteWebApp] in [/Users/saghosh/dev/NoteWebApp/target/NoteWebApp]
[INFO] Processing war project
[INFO] Copying webapp resources [/Users/saghosh/dev/NoteWebApp/src/main/webapp]
[INFO] Webapp assembled in [140 msecs]
[INFO] Building war: /Users/saghosh/dev/NoteWebApp/target/NoteWebApp.war
[INFO] WEB-INF/web.xml already added, skipping
[INFO] 
[INFO] <<< appengine-maven-plugin:1.8.1:devserver (default-cli) @ NoteWebApp <<<
[INFO] 
[INFO] --- appengine-maven-plugin:1.8.1:devserver (default-cli) @ NoteWebApp ---
[INFO] 
[INFO] Google App Engine Java SDK - Running Development Server
[INFO] 
[INFO] Retrieving Google App Engine Java SDK from Maven
[INFO] Running /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/java -XstartOnFirstThread -javaagent:/Users/saghosh/.m2/repository/com/google/appengine/appengine-java-sdk/1.8.1/appengine-java-sdk/appengine-java-sdk-1.8.1/lib/agent/appengine-agent.jar -Xbootclasspath/p:/Users/saghosh/.m2/repository/com/google/appengine/appengine-java-sdk/1.8.1/appengine-java-sdk/appengine-java-sdk-1.8.1/lib/override/appengine-dev-jdk-overrides.jar -Dappengine.fullscan.seconds=5 -classpath /Users/saghosh/.m2/repository/com/google/appengine/appengine-java-sdk/1.8.1/appengine-java-sdk/appengine-java-sdk-1.8.1/lib/appengine-tools-api.jar com.google.appengine.tools.development.DevAppServerMain --allow_remote_shutdown /Users/saghosh/dev/NoteWebApp/target/NoteWebApp
[INFO] 2013-06-25 12:01:16.813 java[15483:407] [Java CocoaComponent compatibility mode]: Enabled
[INFO] 2013-06-25 12:01:16.814 java[15483:407] [Java CocoaComponent compatibility mode]: Setting timeout for SWT to 0.100000
[INFO] Jun 25, 2013 12:01:18 PM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
[INFO] INFO: Successfully processed /Users/saghosh/dev/NoteWebApp/target/NoteWebApp/WEB-INF/appengine-web.xml
[INFO] 2013-06-25 12:01:18.717:INFO::Logging to STDERR via org.mortbay.log.StdErrLog
[INFO] Jun 25, 2013 12:01:18 PM com.google.apphosting.utils.config.AbstractConfigXmlReader readConfigXml
[INFO] INFO: Successfully processed /Users/saghosh/dev/NoteWebApp/target/NoteWebApp/WEB-INF/web.xml
[INFO] 2013-06-25 12:01:18.978:INFO::jetty-6.1.x
[INFO] ****** Scan complete ******
[INFO] 2013-06-25 12:01:21.081:INFO::Started [email protected]:8080
[INFO] Jun 25, 2013 6:31:21 AM com.google.appengine.tools.development.JettyContainerService startHotDeployScanner
[INFO] INFO: Full scan of the web app in place every 5s.
[INFO] Jun 25, 2013 6:31:21 AM com.google.appengine.tools.development.AbstractServer startup
[INFO] INFO: Server default is running at http://localhost:8080/
[INFO] Jun 25, 2013 6:31:21 AM com.google.appengine.tools.development.AbstractServer startup
[INFO] INFO: The admin console is running at http://localhost:8080/_ah/admin
[INFO] Jun 25, 2013 6:31:21 AM com.google.appengine.tools.development.DevAppServerImpl start
[INFO] INFO: Dev App Server is now running
[INFO] Jun 25, 2013 6:31:27 AM com.google.appengine.api.datastore.dev.LocalDatastoreService init
[INFO] INFO: Local Datastore initialized: 
[INFO]  Type: Master/Slave
[INFO]  Storage: /Users/saghosh/dev/NoteWebApp/target/NoteWebApp/WEB-INF/appengine-generated/local_db.bin
[INFO] Jun 25, 2013 6:31:27 AM com.google.appengine.api.datastore.dev.LocalDatastoreService load
[INFO] INFO: The backing store, /Users/saghosh/dev/NoteWebApp/target/NoteWebApp/WEB-INF/appengine-generated/local_db.bin, does not exist. It will be created.
[INFO] Client trying to connect with ID 0354c90b-46cd-46d2-81d1-b57cd311a7a2Initialising client list
[INFO]  New client connected with ID  0354c90b-46cd-46d2-81d1-b57cd311a7a2
[INFO] Jun 25, 2013 6:31:31 AM com.google.appengine.tools.development.JettyContainerService$2 filesChanged
[INFO] INFO: A file has changed, reloading the web application.
[INFO] Jun 25, 2013 6:31:31 AM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
[INFO] INFO: Successfully processed /Users/saghosh/dev/NoteWebApp/target/NoteWebApp/WEB-INF/appengine-web.xml
[INFO] Jun 25, 2013 6:31:31 AM com.google.apphosting.utils.config.AbstractConfigXmlReader readConfigXml
[INFO] INFO: Successfully processed /Users/saghosh/dev/NoteWebApp/target/NoteWebApp/WEB-INF/web.xml
[INFO] ****** Scan complete ******

Следва слушателят на контекста на сървлета

public class MyGuiceServletConfig extends GuiceServletContextListener {

@Override
protected Injector getInjector() {
    return Guice.createInjector(
            //Keep sending Guice the modules
            new SitebricksModule() {
                @Override
                protected void configureSitebricks() {
                    scan(NotebookService.class.getPackage());
                    //Should change this to logger, this is just to proove that
                    //sitebrick scans the classes for annotations like @At etc.
                    System.out.println("****** Scan complete ******");
                }
            }
            , new ServletModule() {
                @Override
                protected void configureServlets() {
                    //Servlet classes have to be singleton to be consistent with servlet specification
                    //In tranditional cases web.xml config tell the container to do so I guess.
                    bind(com.neil.NotebookServlet.class).in(Singleton.class);
                    //Analogous to typcial servlet URL mappings
                    serve("/servlet").with(com.neil.NotebookServlet.class);

                    bind(com.neil.TrackerServlet.class).in(Singleton.class);
                    serve("/_ah/channel/connected/").with(com.neil.TrackerServlet.class);

                    bind(com.neil.TrackerServlet1.class).in(Singleton.class);
                    serve("/_ah/channel/disconnected/").with(com.neil.TrackerServlet1.class);

                }
            }
    );
}
}