Hi,
> > Could someone tell me what is the purpose of having WebappLoader and
> > WebappClassLoader in Tomcat?
> >>WebappLoader is the Tomcat object that a user can configure that
> >>represents the class loader. It remains the same across web application
> >>stop/start.
>
> >>WebappClassLoader is the actual class loader. Every time the web
> >>application is started, a new instance is created and used.
>
> > As I understand WebappClassLoader is per web application and
WebAppLoader
> for
> > tomcat server instance. Am I wrong?
> >>Yes.
> Thanks for the quick explanation.
> So it means WebappClassLoader and WebAppLoader both are per web
> application.
> In tomcat 7 we were able to add repository to the class loader using
> WebAppClassLoader.addRepository()
>>This is replaced in favor of the new resource implementation.
>>Check this [1] and this [2].
Previous Implementation was
@Override
protected void startInternal() throws LifecycleException {
..
for (String repository :
webappClassloadingContext.getProvidedRepositories()) {
addRepository(repository);
}
super.startInternal();
..
}
Now I tried to add the required repositories as follows now
@Override
protected void startInternal() throws LifecycleException {
..
if(webappClassloadingContext.getProvidedRepositories().length > 0){
File dir = new
File(webappClassloadingContext.getProvidedRepositories()[0]);
WebResourceRoot resources = getContext().getResources();
resources.addJarResources(new DirResourceSet(resources,
"/WEB-INF/lib", dir.getAbsolutePath(), getContext().getPath()));
getContext().setResources(resources);
}
super.startInternal();
..
}
But I'm getting
org.apache.catalina.LifecycleException: Failed to start component
> [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/jaxrs_basic]]
> at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
> at
> org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
> at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
> at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
> at
> org.wso2.carbon.tomcat.internal.CarbonTomcat.addWebApp(CarbonTomcat.java:344)
> at
> org.wso2.carbon.tomcat.internal.CarbonTomcat.addWebApp(CarbonTomcat.java:189)
> at
> org.wso2.carbon.webapp.mgt.TomcatGenericWebappsDeployer.handleWebappDeployment(TomcatGenericWebappsDeployer.java:258)
> at
> org.wso2.carbon.webapp.mgt.TomcatGenericWebappsDeployer.handleWarWebappDeployment(TomcatGenericWebappsDeployer.java:207)
> at
> org.wso2.carbon.webapp.mgt.TomcatGenericWebappsDeployer.handleHotDeployment(TomcatGenericWebappsDeployer.java:174)
> at
> org.wso2.carbon.webapp.mgt.TomcatGenericWebappsDeployer.deploy(TomcatGenericWebappsDeployer.java:139)
> at
> org.wso2.carbon.webapp.mgt.AbstractWebappDeployer.deployThisWebApp(AbstractWebappDeployer.java:204)
> at
> org.wso2.carbon.webapp.mgt.AbstractWebappDeployer.deploy(AbstractWebappDeployer.java:111)
> at
> org.wso2.carbon.webapp.deployer.WebappDeployer.deploy(WebappDeployer.java:42)
> at
> org.apache.axis2.deployment.repository.util.DeploymentFileData.deploy(DeploymentFileData.java:136)
> at
> org.apache.axis2.deployment.DeploymentEngine.doDeploy(DeploymentEngine.java:807)
> at
> org.apache.axis2.deployment.repository.util.WSInfoList.update(WSInfoList.java:144)
> at
> org.apache.axis2.deployment.RepositoryListener.update(RepositoryListener.java:377)
> at
> org.apache.axis2.deployment.RepositoryListener.checkServices(RepositoryListener.java:254)
> at
> org.apache.axis2.deployment.DeploymentEngine.loadServices(DeploymentEngine.java:135)
> at
> org.wso2.carbon.core.CarbonAxisConfigurator.deployServices(CarbonAxisConfigurator.java:567)
> at
> org.wso2.carbon.core.internal.DeploymentServerStartupObserver.completingServerStartup(DeploymentServerStartupObserver.java:51)
> at
> org.wso2.carbon.core.internal.CarbonCoreServiceComponent.notifyBefore(CarbonCoreServiceComponent.java:235)
> at
> org.wso2.carbon.core.internal.StartupFinalizerServiceComponent.completeInitialization(StartupFinalizerServiceComponent.java:185)
> at
> org.wso2.carbon.core.internal.StartupFinalizerServiceComponent.serviceChanged(StartupFinalizerServiceComponent.java:288)
> at
> org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:107)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:861)
> at
> org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
> at
> org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:819)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:771)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:214)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:433)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:451)
> at
> org.wso2.carbon.throttling.agent.internal.ThrottlingAgentServiceComponent.registerThrottlingAgent(ThrottlingAgentServiceComponent.java:123)
> at
> org.wso2.carbon.throttling.agent.internal.ThrottlingAgentServiceComponent.activate(ThrottlingAgentServiceComponent.java:100)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:260)
> at
> org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
> at
> org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:345)
> at
> org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
> at
> org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
> at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
> at
> org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
> at
> org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:107)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:861)
> at
> org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
> at
> org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:819)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:771)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:214)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:433)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:451)
> at
> org.wso2.carbon.core.init.CarbonServerManager.initializeCarbon(CarbonServerManager.java:517)
> at
> org.wso2.carbon.core.init.CarbonServerManager.start(CarbonServerManager.java:219)
> at
> org.wso2.carbon.core.internal.CarbonCoreServiceComponent.activate(CarbonCoreServiceComponent.java:91)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:260)
> at
> org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
> at
> org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:345)
> at
> org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
> at
> org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
> at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
> at
> org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
> at
> org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:107)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:861)
> at
> org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
> at
> org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:819)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:771)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:214)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:433)
> at
> org.eclipse.equinox.http.servlet.internal.Activator.registerHttpService(Activator.java:81)
> at
> org.eclipse.equinox.http.servlet.internal.Activator.addProxyServlet(Activator.java:60)
> at
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.init(ProxyServlet.java:40)
> at
> org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.init(DelegationServlet.java:38)
> at
> org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1231)
> at
> org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1144)
> at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1031)
> at
> org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4909)
> at
> org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5196)
> at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
> at
> org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
> at
> org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.catalina.LifecycleException: Failed to start
> component [WebappLoader[/jaxrs_basic]]
> at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
> at
> org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5030)
> at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
> ... 95 more
> Caused by: java.lang.IllegalStateException:
> org.apache.catalina.LifecycleException: Failed to initialize component
> [org.apache.catalina.webresources.DirResourceSet@647452d0]
> at
> org.apache.catalina.webresources.DirResourceSet.<init>(DirResourceSet.java:83)
> at
> org.wso2.carbon.webapp.mgt.loader.CarbonWebappLoader.startInternal(CarbonWebappLoader.java:61)
> at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
> ... 97 more
> Caused by: org.apache.catalina.LifecycleException: Failed to initialize
> component [org.apache.catalina.webresources.DirResourceSet@647452d0]
> at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:106)
> at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
> at
> org.apache.catalina.webresources.DirResourceSet.<init>(DirResourceSet.java:81)
> ... 99 more
2015-04-21 12:14 GMT+05:30 Thusitha Thilina Dayaratne <
thusithathil...@gmail.com>:
> Hi
>
> > > Could someone tell me what is the purpose of having WebappLoader and
> > > WebappClassLoader in Tomcat?
> > >>WebappLoader is the Tomcat object that a user can configure that
> > >>represents the class loader. It remains the same across web application
> > >>stop/start.
> >
> > >>WebappClassLoader is the actual class loader. Every time the web
> > >>application is started, a new instance is created and used.
> >
> > > As I understand WebappClassLoader is per web application and
> WebAppLoader
> > for
> > > tomcat server instance. Am I wrong?
> > >>Yes.
> > Thanks for the quick explanation.
> > So it means WebappClassLoader and WebAppLoader both are per web
> > application.
> > In tomcat 7 we were able to add repository to the class loader using
> > WebAppClassLoader.addRepository()
>
> >>This is replaced in favor of the new resource implementation.
> >>Check this [1] and this [2].
> Thanks for quick response.
> I will look into them :)
>
> Best Regards
>
> 2015-04-21 12:02 GMT+05:30 Violeta Georgieva <violet...@apache.org>:
>
>> Hi,
>>
>> 2015-04-21 6:42 GMT+03:00 Thusitha Thilina Dayaratne <
>> thusithathil...@gmail.com>:
>> >
>> > Hi,
>> >
>> > > Could someone tell me what is the purpose of having WebappLoader and
>> > > WebappClassLoader in Tomcat?
>> > >>WebappLoader is the Tomcat object that a user can configure that
>> > >>represents the class loader. It remains the same across web
>> application
>> > >>stop/start.
>> >
>> > >>WebappClassLoader is the actual class loader. Every time the web
>> > >>application is started, a new instance is created and used.
>> >
>> > > As I understand WebappClassLoader is per web application and
>> WebAppLoader
>> > for
>> > > tomcat server instance. Am I wrong?
>> > >>Yes.
>> > Thanks for the quick explanation.
>> > So it means WebappClassLoader and WebAppLoader both are per web
>> > application.
>> > In tomcat 7 we were able to add repository to the class loader using
>> > WebAppClassLoader.addRepository()
>>
>> This is replaced in favor of the new resource implementation.
>> Check this [1] and this [2].
>>
>> Regards,
>> Violeta
>>
>> [1] http://tomcat.apache.org/migration-8.html#Web_application_resources
>> [2] http://tomcat.apache.org/tomcat-8.0-doc/config/resources.html
>>
>> > So in Tomcat 8 if we wanna add repositories to the classloader we should
>> > done that trough the WebAppLoader not with WebAppClassLoader?
>> > Please correct me if I'm wrong.
>> >
>> > Thanks
>> > Best Regards
>> >
>> > 2015-04-21 1:51 GMT+05:30 Mark Thomas <ma...@apache.org>:
>> >
>> > > On 20/04/2015 14:22, Thusitha Thilina Dayaratne wrote:
>> > > > Hi,
>> > > >
>> > > > Could someone tell me what is the purpose of having WebappLoader and
>> > > > WebappClassLoader in Tomcat?
>> > >
>> > > WebappLoader is the Tomcat object that a user can configure that
>> > > represents the class loader. It remains the same across web
>> application
>> > > stop/start.
>> > >
>> > > WebappClassLoader is the actual class loader. Every time the web
>> > > application is started, a new instance is created and used.
>> > >
>> > > > As I understand WebappClassLoader is per web application and
>> > > WebAppLoader for
>> > > > tomcat server instance. Am I wrong?
>> > >
>> > > Yes.
>> > >
>> > > Mark
>> > >
>> > >
>> > > ---------------------------------------------------------------------
>> > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
>> > > For additional commands, e-mail: users-h...@tomcat.apache.org
>> > >
>> > >
>> >
>> >
>> > --
>>
>
>
>
> --
>
>
--
