OK, so I'm still digging and don't have answer yet but I thought I'd
give an update in case it sparks an idea and it'll be useful as a
future reference.
Firstly getting to the real error is a challenge because Guice on
Appengine does a lot of recursion when creating dependency trees. In
this case the real SecurityException is 4 levels down the the
appengine only shows three levels. So I put a try catch in my servlet
config class (IntegrationServletConfig) and then unwrapped the nested
exceptions so see the culprit. Bear in mind that I cannot reproduce
locally so I have to upload a new version for each test - yuck! This
did yield a result. The SecurityException comes from
Class.getDeclaredMethods....
java.lang.SecurityException: Unable to get members for class
com.pbw.core.database.MappingUtils
at
com.google.appengine.runtime.Request.process-131516640218e6d2(Request.java)
at java.lang.Class.getDeclaredMethods(Class.java:252)
at com.google.inject.spi.InjectionPoint$Factory
$2.getMembers(InjectionPoint.java:395)
at com.google.inject.spi.InjectionPoint$Factory
$2.getMembers(InjectionPoint.java:393)
at
com.google.inject.spi.InjectionPoint.addInjectorsForMembers(InjectionPoint.java:
359)
at
com.google.inject.spi.InjectionPoint.addInjectionPoints(InjectionPoint.java:
353)
at
com.google.inject.spi.InjectionPoint.forInstanceMethodsAndFields(InjectionPoint.java:
296)
at
com.google.inject.MembersInjectorStore.createWithListeners(MembersInjectorStore.java:
78)
at com.google.inject.MembersInjectorStore.access
$000(MembersInjectorStore.java:35)
at com.google.inject.MembersInjectorStore
$1.create(MembersInjectorStore.java:43)
at com.google.inject.MembersInjectorStore
$1.create(MembersInjectorStore.java:40)
at com.google.inject.internal.FailableCache
$1.apply(FailableCache.java:35)
at com.google.inject.internal.MapMaker
$StrategyImpl.compute(MapMaker.java:549)
So now I know that something about the methods in my MappingUtils
class are not ok for the appengine. I guess that the real answer is in
this line...
at
com.google.appengine.runtime.Request.process-131516640218e6d2(Request.java)
but I'll need someone at Google to look into that as it only occurs on
the appengine.
This got me thinking - what has changed? I've been using the class
with no problems for 6 months. Here are the candidates..
- a new method : I added a new method that returns Class<?> : when I
removed it the error still occurs
- a newer version of the Appengine : I upgraded to 1.3.1 : I
downgraded to 1.3.0 and had the same problem.
Now I'm lost for ideas. If you have a suggestion for a next move I'd
love to hear it. Thanks
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