RHQ Java Client libraries question

Steven North swn at ocsystems.com
Sun Sep 11 18:56:48 UTC 2011


John,

Thanks for the information.

I think my next step is to try the 4.1 libraries with the 4.0.1 server, 
and assuming that works, which seems likely given your aim at backwards 
compatibility, that takes care of the immediate problems.  I think we 
can also structure our application to support multiple library versions 
in the future.

Thanks again,

Steve

On 9/11/2011 9:00 AM, John Sanda wrote:
> Definitely not a user error. The MANAGE_DRIFT enum constant was added
> prior to the RHQ 4.1 beta release. It was not in earlier versions. In
> your first stack trace note the following line,
>
> at org.rhq.enterprise.client.RemoteClient.login(RemoteClient.java:142)
>
> The login method returns a Subject which is getting a Permission objects
> returned back with it. The Permission object you are getting back from
> the server defines the new enum constant which you do not have on the
> client, hence the InvalidObjectException. I just read
> http://brian.pontarelli.com/2006/01/17/versioning-and-serialization-of-enums/
> which talks about serialization/versioning issues with enums.
>
> Some interesting points are raised in that article, and this issue is
> something we probably need to take a closer look at to ensure we are
> effective in our efforts to maintain backwards compatibility.  In the
> short term, upgrading the RHQ client libraries should resolve these
> errors, and please feel free to file a bug for this so it is tracked.
>
> - John
>
> On 9/10/11 5:18 PM, Steven North wrote:
>> John,
>>
>> I will admint that I sent the e-mail pretty early on in my investigation
>> of the problem, so it could just be a user error.  ;-)
>>
>> Here are two different problems:
>>
>> org.jboss.remoting.CannotConnectException: Can not connect http client
>> invoker. enum constant MANAGE_DRIFT does not exist in class
>> org.rhq.core.domain.authz.Permission. Response: OK/200.
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:348)
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.transport(HTTPClientInvoker.java:137)
>>        at
>> org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122)
>>        at org.jboss.remoting.Client.invoke(Client.java:1634)
>>        at org.jboss.remoting.Client.invoke(Client.java:548)
>>        at org.jboss.remoting.Client.invoke(Client.java:536)
>>        at
>> org.rhq.enterprise.client.RemoteClientProxy.doInvoke(RemoteClientProxy.java:80)
>>        at
>> org.rhq.bindings.client.AbstractRhqFacadeProxy.invoke(AbstractRhqFacadeProxy.java:88)
>>        at
>> org.rhq.enterprise.client.RemoteClientProxy.invoke(RemoteClientProxy.java:64)
>>        at $Proxy0.login(Unknown Source)
>>        at org.rhq.enterprise.client.RemoteClient.login(RemoteClient.java:142)
>>        at
>> com.ocsystems.rtiee.util.jon.JonClientSession.<init>(JonClientSession.java:194)
>>        at
>> com.ocsystems.rtiee.util.jon.JonClientManager.getSession(JonClientManager.java:72)
>>        at
>> com.ocsystems.rtiee.util.jon.JonRemoteAccess.findJonPlatforms(JonRemoteAccess.java:455)
>>        at
>> com.ocsystems.rtiee.util.jon.JonRemoteAccess.findJonPlatform(JonRemoteAccess.java:426)
>>        at
>> com.ocsystems.rtiee.util.jon.model.JonHost.refreshPlatform(JonHost.java:154)
>>        at
>> com.ocsystems.rtiee.util.jon.model.JonHost.refresh(JonHost.java:112)
>>        at
>> com.ocsystems.rtiee.ui.commands.util.CommandUtil$1.run2(CommandUtil.java:83)
>>        at
>> com.ocsystems.rtiee.ui.status.StatusUpdateJob.run(StatusUpdateJob.java:40)
>>        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
>> Caused by: java.io.InvalidObjectException: enum constant MANAGE_DRIFT
>> does not exist in class org.rhq.core.domain.authz.Permission
>>        at java.io.ObjectInputStream.readEnum(Unknown Source)
>>        at java.io.ObjectInputStream.readObject0(Unknown Source)
>>        at java.io.ObjectInputStream.readObject(Unknown Source)
>>        at java.util.HashSet.readObject(Unknown Source)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>        at java.lang.reflect.Method.invoke(Unknown Source)
>>        at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
>>        at java.io.ObjectInputStream.readSerialData(Unknown Source)
>>        at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>>        at java.io.ObjectInputStream.readObject0(Unknown Source)
>>        at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
>>        at java.io.ObjectInputStream.readSerialData(Unknown Source)
>>        at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>>        at java.io.ObjectInputStream.readObject0(Unknown Source)
>>        at java.io.ObjectInputStream.readObject(Unknown Source)
>>        at java.util.HashSet.readObject(Unknown Source)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>        at java.lang.reflect.Method.invoke(Unknown Source)
>>        at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
>>        at java.io.ObjectInputStream.readSerialData(Unknown Source)
>>        at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>>        at java.io.ObjectInputStream.readObject0(Unknown Source)
>>        at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
>>        at java.io.ObjectInputStream.readSerialData(Unknown Source)
>>        at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>>        at java.io.ObjectInputStream.readObject0(Unknown Source)
>>        at java.io.ObjectInputStream.readObject(Unknown Source)
>>        at
>> org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObjectVersion2_2(JavaSerializationManager.java:239)
>>        at
>> org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObject(JavaSerializationManager.java:133)
>>        at
>> org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:120)
>>        at
>> org.jboss.remoting.marshal.http.HTTPUnMarshaller.read(HTTPUnMarshaller.java:69)
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.readResponse(HTTPClientInvoker.java:516)
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:307)
>>        ... 19 more
>> Caused by: java.lang.IllegalArgumentException: No enum const class
>> org.rhq.core.domain.authz.Permission.MANAGE_DRIFT
>>        at java.lang.Enum.valueOf(Unknown Source)
>>        ... 56 more
>> org.jboss.remoting.CannotConnectException: Can not connect http client
>> invoker. enum constant MANAGE_DRIFT does not exist in class
>> org.rhq.core.domain.authz.Permission. Response: OK/200.
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:348)
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.transport(HTTPClientInvoker.java:137)
>>        at
>> org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122)
>>        at org.jboss.remoting.Client.invoke(Client.java:1634)
>>        at org.jboss.remoting.Client.invoke(Client.java:548)
>>        at org.jboss.remoting.Client.invoke(Client.java:536)
>>        at
>> org.rhq.enterprise.client.RemoteClientProxy.doInvoke(RemoteClientProxy.java:80)
>>        at
>> org.rhq.bindings.client.AbstractRhqFacadeProxy.invoke(AbstractRhqFacadeProxy.java:88)
>>        at
>> org.rhq.enterprise.client.RemoteClientProxy.invoke(RemoteClientProxy.java:64)
>>        at $Proxy0.login(Unknown Source)
>>        at org.rhq.enterprise.client.RemoteClient.login(RemoteClient.java:142)
>>        at
>> com.ocsystems.rtiee.util.jon.JonClientSession.<init>(JonClientSession.java:194)
>>        at
>> com.ocsystems.rtiee.util.jon.JonClientManager.getSession(JonClientManager.java:72)
>>        at
>> com.ocsystems.rtiee.util.jon.JonRemoteAccess.findJonPlatforms(JonRemoteAccess.java:455)
>>        at
>> com.ocsystems.rtiee.util.jon.JonRemoteAccess.findJonPlatform(JonRemoteAccess.java:426)
>>        at
>> com.ocsystems.rtiee.util.jon.model.JonHost.refreshPlatform(JonHost.java:154)
>>        at
>> com.ocsystems.rtiee.util.jon.model.JonHost.refresh(JonHost.java:112)
>>        at
>> com.ocsystems.rtiee.ui.commands.util.CommandUtil$1.run2(CommandUtil.java:83)
>>        at
>> com.ocsystems.rtiee.ui.status.StatusUpdateJob.run(StatusUpdateJob.java:40)
>>        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
>> Caused by: java.io.InvalidObjectException: enum constant MANAGE_DRIFT
>> does not exist in class org.rhq.core.domain.authz.Permission(E) An error
>> occurred finding the JON Platform: rhel5-64 - Can not connect http
>> client invoker. enum constant MANAGE_DRIFT does not exist in class
>> org.rhq.core.domain.authz.Permission. Response: OK/200.
>>
>>        at java.io.ObjectInputStream.readEnum(Unknown Source)
>>        at java.io.ObjectInputStream.readObject0(Unknown Source)
>>        at java.io.ObjectInputStream.readObject(Unknown Source)
>>        at java.util.HashSet.readObject(Unknown Source)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>        at java.lang.reflect.Method.invoke(Unknown Source)
>>        at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
>>        at java.io.ObjectInputStream.readSerialData(Unknown Source)
>>        at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>>        at java.io.ObjectInputStream.readObject0(Unknown Source)
>>        at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
>>        at java.io.ObjectInputStream.readSerialData(Unknown Source)
>>        at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>>        at java.io.ObjectInputStream.readObject0(Unknown Source)
>>        at java.io.ObjectInputStream.readObject(Unknown Source)
>>        at java.util.HashSet.readObject(Unknown Source)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>        at java.lang.reflect.Method.invoke(Unknown Source)
>>        at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
>>        at java.io.ObjectInputStream.readSerialData(Unknown Source)
>>        at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>>        at java.io.ObjectInputStream.readObject0(Unknown Source)
>>        at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
>>        at java.io.ObjectInputStream.readSerialData(Unknown Source)
>>        at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>>        at java.io.ObjectInputStream.readObject0(Unknown Source)
>>        at java.io.ObjectInputStream.readObject(Unknown Source)
>>        at
>> org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObjectVersion2_2(JavaSerializationManager.java:239)
>>        at
>> org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObject(JavaSerializationManager.java:133)
>>        at
>> org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:120)
>>        at
>> org.jboss.remoting.marshal.http.HTTPUnMarshaller.read(HTTPUnMarshaller.java:69)
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.readResponse(HTTPClientInvoker.java:516)
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:307)
>>        ... 19 more
>> Caused by: java.lang.IllegalArgumentException: No enum const class
>> org.rhq.core.domain.authz.Permission.MANAGE_DRIFT
>>        at java.lang.Enum.valueOf(Unknown Source)
>>        ... 56 more
>>
>>
>> and:
>>
>> org.jboss.remoting.CannotConnectException: Can not connect http client
>> invoker. Response: OK/200.
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:348)
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.transport(HTTPClientInvoker.java:137)
>>        at
>> org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122)
>>        at org.jboss.remoting.Client.invoke(Client.java:1634)
>>        at org.jboss.remoting.Client.invoke(Client.java:548)
>>        at org.jboss.remoting.Client.invoke(Client.java:536)
>>        at
>> org.rhq.enterprise.client.RemoteClientProxy.doInvoke(RemoteClientProxy.java:80)
>>        at
>> org.rhq.bindings.client.AbstractRhqFacadeProxy.invoke(AbstractRhqFacadeProxy.java:88)
>>        at
>> org.rhq.enterprise.client.RemoteClientProxy.invoke(RemoteClientProxy.java:64)
>>        at $Proxy0.login(Unknown Source)
>>        at org.rhq.enterprise.client.RemoteClient.login(RemoteClient.java:142)
>>        at
>> com.ocsystems.rtiee.util.jon.JonClientSession.<init>(JonClientSession.java:194)
>>        at
>> com.ocsystems.rtiee.util.jon.JonClientManager.getSession(JonClientManager.java:72)
>>        at
>> com.ocsystems.rtiee.util.jon.JonRemoteAccess.testConnection(JonRemoteAccess.java:1344)
>>        at
>> com.ocsystems.rtiee.ui.widgets.JonHostPropertiesWidget.testConnection(JonHostPropertiesWidget.java:202)
>>        at
>> com.ocsystems.rtiee.ui.widgets.JonHostPropertiesWidget$2.widgetSelected(JonHostPropertiesWidget.java:164)
>>        at
>> org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
>>        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
>>        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
>>        at
>> org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
>>        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
>>        at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
>>        at org.eclipse.jface.window.Window.open(Window.java:801)
>>        at
>> com.ocsystems.rtiee.ui.commands.NewHostCommand.execute(NewHostCommand.java:25)
>>        at
>> org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
>>        at
>> org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
>>        at
>> org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
>>        at
>> org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
>>        at
>> org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
>>        at
>> org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
>>        at
>> org.eclipse.ui.menus.CommandContributionItem.handleWidgetSelection(CommandContributionItem.java:820)
>>        at
>> org.eclipse.ui.menus.CommandContributionItem.access$19(CommandContributionItem.java:806)
>>        at
>> org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(CommandContributionItem.java:796)
>>        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
>>        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
>>        at
>> org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
>>        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
>>        at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629)
>>        at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593)
>>        at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427)
>>        at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670)
>>        at
>> org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
>>        at
>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663)
>>        at
>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
>>        at com.ocsystems.rtiee.product.Application.start(Application.java:29)
>>        at
>> org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
>>        at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
>>        at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
>>        at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
>>        at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>        at java.lang.reflect.Method.invoke(Unknown Source)
>>        at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
>>        at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
>>        at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
>>        at org.eclipse.equinox.launcher.Main.main(Main.java:1383)
>> Caused by: java.io.EOFException
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.readResponse(HTTPClientInvoker.java:528)
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:307)
>>        ... 57 more
>> org.jboss.remoting.CannotConnectException: Can not connect http client
>> invoker. Response: OK/200.
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:348)
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.transport(HTTPClientInvoker.java:137)
>>        at
>> org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122)
>>        at org.jboss.remoting.Client.invoke(Client.java:1634)
>>        at org.jboss.remoting.Client.invoke(Client.java:548)
>>        at org.jboss.remoting.Client.invoke(Client.java:536)
>>        at
>> org.rhq.enterprise.client.RemoteClientProxy.doInvoke(RemoteClientProxy.java:80)
>>        at
>> org.rhq.bindings.client.AbstractRhqFacadeProxy.invoke(AbstractRhqFacadeProxy.java:88)
>>        at
>> org.rhq.enterprise.client.RemoteClientProxy.invoke(RemoteClientProxy.java:64)
>>        at $Proxy0.login(Unknown Source)
>>        at org.rhq.enterprise.client.RemoteClient.login(RemoteClient.java:142)
>>        at
>> com.ocsystems.rtiee.util.jon.JonClientSession.<init>(JonClientSession.java:194)
>>        at
>> com.ocsystems.rtiee.util.jon.JonClientManager.getSession(JonClientManager.java:72)
>>        at
>> com.ocsystems.rtiee.util.jon.JonRemoteAccess.testConnection(JonRemoteAccess.java:1344)
>>        at
>> com.ocsystems.rtiee.ui.widgets.JonHostPropertiesWidget.testConnection(JonHostPropertiesWidget.java:202)
>>        at
>> com.ocsystems.rtiee.ui.widgets.JonHostPropertiesWidget$2.widgetSelected(JonHostPropertiesWidget.java:164)
>>        at
>> org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
>>        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
>>        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
>>        at
>> org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
>>        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
>>        at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
>>        at org.eclipse.jface.window.Window.open(Window.java:801)
>>        at
>> com.ocsystems.rtiee.ui.commands.NewHostCommand.execute(NewHostCommand.java:25)
>>        at
>> org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
>>        at
>> org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
>>        at
>> org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
>>        at
>> org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
>>        at
>> org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
>>        at
>> org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
>>        at
>> org.eclipse.ui.menus.CommandContributionItem.handleWidgetSelection(CommandContributionItem.java:820)
>>        at
>> org.eclipse.ui.menus.CommandContributionItem.access$19(CommandContributionItem.java:806)
>>        at
>> org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(CommandContributionItem.java:796)
>>        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
>>        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
>>        at
>> org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
>>        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
>>        at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629)
>>        at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593)
>>        at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427)
>>        at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670)
>>        at
>> org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
>>        at
>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663)
>>        at
>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
>>        at com.ocsystems.rtiee.product.Application.start(Application.java:29)
>>        at
>> org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
>>        at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
>>        at
>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
>>        at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
>>        at
>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>>        at java.lang.reflect.Method.invoke(Unknown Source)
>>        at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
>>        at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
>>        at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
>>        at org.eclipse.equinox.launcher.Main.main(Main.java:1383)
>> Caused by: java.io.EOFException
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.readResponse(HTTPClientInvoker.java:528)
>>        at
>> org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:307)
>>        ... 57 more
>>
>> Thanks in advance for any help you can give.
>>
>> Steve
>>
>> On 9/9/2011 6:23 PM, John Sanda wrote:
>>> The web services interface is not well supported. In fact there are APIs
>>> that have been added to the Java remote APIs that have not been added to
>>> the web services APIs. There has been some work started on a REST
>>> interface, but that is not fully developed. I believe it is not yet in
>>> master. I would stick with the remote Java APIs at least for the time being.
>>>
>>> We do make an effort to remain backwards compatible to the greatest
>>> extent possible especially for minor releases. Can you provide examples
>>> of the errors you are hitting?
>>>
>>> - John
>>>
>>> On 9/9/11 8:31 PM, Steven North wrote:
>>>> Hi,
>>>>
>>>> We currently have a separate tool that connects to the RHQ server to get
>>>> resource information and snapshots.  We use the RHQ Java Client
>>>> "interface" and bind our Java tool with the RHQ Java Client libraries.
>>>> That was working fine while we developed on RHQ 4.0 and 4.0.1, but now
>>>> that we are testing against an RHQ 4.1 server we can't seem to connect
>>>> with the 4.0 client libraries.  The documentation clearly warns us that
>>>> we should use matching versions of the client libraries.  ;-)
>>>>
>>>> We are trying to plot our course forward in terms of how we build
>>>> versions of our tool.  One way is to build different versions of our
>>>> tool with different sets of libraries.  Or we could try to include both
>>>> (or all) sets of libraries and choose the right one (somehow).  Or we
>>>> can require users to point us to the right set of libraries.  All those
>>>> options seem to have pitfalls.
>>>>
>>>> Would it be better for us to switch to the Webservices interface?  Would
>>>> that give us better immunity to version changes?  Or are there the same
>>>> issues?
>>>>
>>>> Thoughts?
>>>>
>>>> Thanks in advance,
>>>>
>>>> Steve
>>>>
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>>>> https://fedorahosted.org/mailman/listinfo/rhq-devel
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>> https://fedorahosted.org/mailman/listinfo/rhq-devel
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