Hey Toby:
I'm having some trouble with the logging functionality. I'm logging my
exceptions but nothing is showing on the logs. Following a simple class
which uses logging.
private static final Logger log =
Logger.getLogger(MyClass.class.getName());
...
}catch(Exception e)
log.throwing("MyClass", "MyMethod", e);
}
Am I missing something?
Regards,
Albert Attard
Pablo Picasso<http://www.brainyquote.com/quotes/authors/p/pablo_picasso.html>
- "Computers are useless. They can only give you answers."
2009/8/26 Toby Reyelts <[email protected]>
> Can you provide the full stacktrace for the exception?
>
>
> On Wed, Aug 26, 2009 at 2:58 PM, Albert Attard <[email protected]>wrote:
>
>> Hey Toby:
>> Did as you instructed and worked. Thanks a lot Toby. Let me know should
>> you need anything. I'm glad to help.
>>
>>
>> Another question about Janino: I'm getting the following exception on the
>> live app-engine when the dynamic code (the code that is compiled by janino)
>> has a compilation error:
>>
>> An error occurred: java.security.AccessControlException: access denied
>> (java.lang.RuntimePermissions accessDeclaredMembers)
>>
>>
>> On the local environment, janino returns the line number where the error
>> occurred, which is very helpful for the students.
>>
>> Cheers,
>> Albert Attard
>>
>> Samuel
>> Goldwyn<http://www.brainyquote.com/quotes/authors/s/samuel_goldwyn.html> -
>> "I'm willing to admit that I may not always be right, but I am never
>> wrong."
>>
>> 2009/8/26 Toby Reyelts <[email protected]>
>>
>>
>>> Hey Albert,
>>>
>>> Even though I haven't actually seen the changes that you made, I believe
>>> they were unnecessary. (Go out on a limb with me here). I tracked the fault
>>> down to an error in our runtime that can be worked around by just
>>> recompiling the code. You should be able to confirm this on your end by
>>> recompiling Janino from source *without* any of the changes you made.
>>> Please make sure you've set the target version to 1.5 or 1.6.
>>>
>>> On Wed, Aug 26, 2009 at 4:51 AM, Albert Attard
>>> <[email protected]>wrote:
>>>
>>>> Hey Toby:
>>>> Janino api include classes that are not supported by the app-engine. All
>>>> I did is commented out the code that the app-engine didn't like in janino
>>>> and repackaged it.
>>>>
>>>> I did the following:
>>>>
>>>> - Downloaded the source for janino:
>>>> http://www.janino.net/download/janino-2.5.15.zip
>>>> - I've created a new Google Web Project in Eclipse
>>>> - I've copied the source into the Google Web Project
>>>> - Than I've *unsafely* commented out code that was not supported by
>>>> the Google app-engine
>>>> - Repackaged the edited code into a new jar and deployed it with my
>>>> project instead of the original one
>>>> - The simple proof of concept seams to work
>>>>
>>>> As you can see at the simple demo: http://ask-me.appspot.com/ the code
>>>> seams to work. Hope you manage to complete this question :)
>>>>
>>>> Cheers,
>>>> Albert Attard
>>>>
>>>> Stephen
>>>> Leacock<http://www.brainyquote.com/quotes/authors/s/stephen_leacock.html>
>>>> - "I detest life-insurance agents: they always argue that I shall some day
>>>> die, which is not so."
>>>>
>>>> 2009/8/25 Toby Reyelts <[email protected]>
>>>>
>>>> Hey Albert,
>>>>>
>>>>> That code should actually work ok, but you've managed to tickle a bug
>>>>> in our runtime. I've filed an
>>>>> issue<http://code.google.com/p/googleappengine/issues/detail?id=2028>for
>>>>> you here. The fix for this probably won't make the next release, but it
>>>>> should come shortly thereafter.
>>>>>
>>>>>
>>>>> On Tue, Aug 25, 2009 at 6:33 AM, Albert Attard <[email protected]
>>>>> > wrote:
>>>>>
>>>>>> Hi Toby:
>>>>>> Thanks for you feedback.
>>>>>>
>>>>>> I've did a small prototype: http://ask-me.appspot.com/ . It's working
>>>>>> fine locally, but it's throwing the following exception when executed on
>>>>>> the
>>>>>> app-engine:
>>>>>>
>>>>>> javax.servlet.ServletContext log: Exception while dispatching incoming
>>>>>> RPC call
>>>>>> com.google.gwt.user.server.rpc.UnexpectedException: Service method
>>>>>> 'public abstract com.albertattard.askme.client.utils.AssessmentTO
>>>>>> com.albertattard.askme.client.AssessorService.assessCode(java.lang.String)'
>>>>>> threw an unexpected exception: java.lang.VerifyError: (class:
>>>>>> org/codehaus/janino/ByteArrayClassLoader, method: findClass signature:
>>>>>> (Ljava/lang/String;)Ljava/lang/Class;) Illegal type in constant pool
>>>>>> at
>>>>>> com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:360)
>>>>>> at
>>>>>> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:546)
>>>>>> at
>>>>>> com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:166)
>>>>>> at
>>>>>> com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
>>>>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
>>>>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>>>>>> at
>>>>>> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
>>>>>> at
>>>>>> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
>>>>>> at
>>>>>> com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35)
>>>>>> at
>>>>>> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>>>>>> at
>>>>>> com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
>>>>>> at
>>>>>> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>>>>>> at
>>>>>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
>>>>>> at
>>>>>> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>>>>>> at
>>>>>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>>>>>> at
>>>>>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
>>>>>> at
>>>>>> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
>>>>>> at
>>>>>> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:237)
>>>>>> at
>>>>>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
>>>>>> at org.mortbay.jetty.Server.handle(Server.java:313)
>>>>>> at
>>>>>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506)
>>>>>> at
>>>>>> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830)
>>>>>> at
>>>>>> com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)
>>>>>> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
>>>>>> at
>>>>>> com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:139)
>>>>>> at
>>>>>> com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:235)
>>>>>> at
>>>>>> com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:4823)
>>>>>> at
>>>>>> com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:4821)
>>>>>> at
>>>>>> com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:24)
>>>>>> at
>>>>>> com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:359)
>>>>>> at com.google.net.rpc.impl.Server$2.run(Server.java:820)
>>>>>> at
>>>>>> com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:56)
>>>>>> at
>>>>>> com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java:516)
>>>>>> at com.google.net.rpc.impl.Server.startRpc(Server.java:775)
>>>>>> at com.google.net.rpc.impl.Server.processRequest(Server.java:348)
>>>>>> at
>>>>>> com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:436)
>>>>>> at
>>>>>> com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:319)
>>>>>> at
>>>>>> com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:290)
>>>>>> at
>>>>>> com.google.net.async.Connection.handleReadEvent(Connection.java:428)
>>>>>> at
>>>>>> com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java:762)
>>>>>> at
>>>>>> com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java:207)
>>>>>> at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:101)
>>>>>> at
>>>>>> com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java:251)
>>>>>> at
>>>>>> com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run(JavaRuntime.java:374)
>>>>>> at java.lang.Thread.run(Unknown Source)
>>>>>> Caused by: java.lang.VerifyError: (class:
>>>>>> org/codehaus/janino/ByteArrayClassLoader, method: findClass signature:
>>>>>> (Ljava/lang/String;)Ljava/lang/Class;) Illegal type in constant pool
>>>>>> at
>>>>>> org.codehaus.janino.SimpleCompiler.compileToClassLoader(SimpleCompiler.java)
>>>>>> at org.codehaus.janino.SimpleCompiler.cook(SimpleCompiler.java)
>>>>>> at org.codehaus.janino.Cookable.cook(Cookable.java)
>>>>>> at org.codehaus.janino.Cookable.cook(Cookable.java)
>>>>>> at org.codehaus.janino.Cookable.cook(Cookable.java)
>>>>>> at
>>>>>> com.albertattard.askme.server.DemoSwapAssessor.assess(DemoSwapAssessor.java:21)
>>>>>> at
>>>>>> com.albertattard.askme.server.AssessorServiceImpl.assessCode(AssessorServiceImpl.java:15)
>>>>>> 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
>>>>>> com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_$3.run(Method_.java:149)
>>>>>> at java.security.AccessController.doPrivileged(Native Method)
>>>>>> at
>>>>>> com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.privilegedInvoke(Method_.java:147)
>>>>>> at
>>>>>> com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke(Method_.java:120)
>>>>>> at
>>>>>> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:527)
>>>>>> ... 43 more
>>>>>>
>>>>>>
>>>>>> The janino ByteArrayClassLoader is not working well (not accepted) on
>>>>>> the app-engine :(
>>>>>>
>>>>>> Any other options?
>>>>>>
>>>>>> Cheers,
>>>>>> Albert Attard
>>>>>>
>>>>>> Marie von
>>>>>> Ebner-Eschenbach<http://www.brainyquote.com/quotes/authors/m/marie_von_ebnereschenbac.html>
>>>>>> - "Even a stopped clock is right twice a day."
>>>>>>
>>>>>> 2009/8/14 Toby Reyelts <[email protected]>
>>>>>>
>>>>>>
>>>>>>> We don't have any near term plans to whitelist javax.tools. Do you
>>>>>>> think something like janino <http://www.janino.net/> might work for
>>>>>>> you?
>>>>>>>
>>>>>>>
>>>>>>> On Fri, Aug 14, 2009 at 2:50 AM, Albert Attard <
>>>>>>> [email protected]> wrote:
>>>>>>>
>>>>>>>> Hi everyone:
>>>>>>>>
>>>>>>>> Background about the problem:
>>>>>>>> I'm a Java lecturer and would like to create an automated question
>>>>>>>> web application similar to a multiple choice questions and answers but
>>>>>>>> where
>>>>>>>> the students can practice coding instead of simply selecting an answer.
>>>>>>>>
>>>>>>>> Multiple choice questions are very popular in web exams as these
>>>>>>>> are fully automated. You do the test and the system corrects it for
>>>>>>>> you and
>>>>>>>> gives you the results there and then. I would like to go one step
>>>>>>>> further
>>>>>>>> and have the student to supply a code fragment or even a class(es) and
>>>>>>>> have
>>>>>>>> the system automatically correcting it in a similar fashion to the
>>>>>>>> multiple
>>>>>>>> choice questions.
>>>>>>>>
>>>>>>>> Example (in a nutshell):
>>>>>>>> The student is asked to write a method: that given an array of int
>>>>>>>> and two indices of type int (between 0 and the size of the array - 1),
>>>>>>>> this
>>>>>>>> method will swap the elements at the given indices. The student
>>>>>>>> will write the method in the provided text area and submit it. Then
>>>>>>>> the system will include this method into a class, compile it and by
>>>>>>>> using reflection executes it with an array of values (similar to
>>>>>>>> JUnit) to
>>>>>>>> ensure that it is working as expected. During this process the system
>>>>>>>> will
>>>>>>>> be awarding the student marks and will display the final result
>>>>>>>> together
>>>>>>>> with comments as required.
>>>>>>>>
>>>>>>>> Google Appengine
>>>>>>>> I have a prototype and it works great on Tomcat. Yes I know that it
>>>>>>>> is subject to Java code injection but that's not an issue at this
>>>>>>>> stage. This issue can be fixed at a later stage. Unfortunately I cannot
>>>>>>>> implement it on the Google Appengine as most of the
>>>>>>>> required functionality, such as writing to a file or JavaCompiler is
>>>>>>>> disabled . I've managed to compile the classes to database (without
>>>>>>>> writing
>>>>>>>> to the file system) and load classes from database (without reading
>>>>>>>> from the
>>>>>>>> file system), which can integrate well with the provided datastore.
>>>>>>>> Is there a way (or a procedure) of implementing such a system on
>>>>>>>> the Google Appengine? This application will be a free education tool
>>>>>>>> for everyone who would like to use it.
>>>>>>>>
>>>>>>>> Thanks in advance,
>>>>>>>> Albert Attard
>>>>>>>>
>>>>>>>> Ted
>>>>>>>> Turner<http://www.brainyquote.com/quotes/authors/t/ted_turner.html> -
>>>>>>>> "Sports is like a war without the killing."
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>
> >
>
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