7:30 a.m.
Jens Rantil created ISPN-1921:
---------------------------------
Summary: Non-existing jGroups config file gives unclear exception
Key: ISPN-1921
URL: https://issues.jboss.org/browse/ISPN-1921
Project: Infinispan
Issue Type: Enhancement
Components: Configuration, Core API
Affects Versions: 5.1.2.FINAL
Reporter: Jens Rantil
Assignee: Manik Surtani
Priority: Minor
Took me a long to figure this out, so I'm creating an issue for it.
When initializing an EmbeddedCacheManager with a transport (jGroups) configuration file
that does not exist the following exception is eventually given:
at
org.infinispan.factories.GlobalComponentRegistry.start(GlobalComponentRegistry.java:222)
at
org.infinispan.manager.DefaultCacheManager.wireCache(DefaultCacheManager.java:654)
at
org.infinispan.manager.DefaultCacheManager.createCache(DefaultCacheManager.java:619)
at
org.infinispan.manager.DefaultCacheManager.getCache(DefaultCacheManager.java:516)
at
org.infinispan.manager.DefaultCacheManager.getCache(DefaultCacheManager.java:489)
[...]
Caused by: org.infinispan.CacheException: Unable to invoke method public void
org.infinispan.remoting.transport.jgroups.JGroupsTransport.start() on object
at org.infinispan.util.ReflectionUtil.invokeAccessibly(ReflectionUtil.java:238)
at
org.infinispan.factories.AbstractComponentRegistry$PrioritizedMethod.invoke(AbstractComponentRegistry.java:882)
at
org.infinispan.factories.AbstractComponentRegistry.invokeStartMethods(AbstractComponentRegistry.java:637)
at
org.infinispan.factories.AbstractComponentRegistry.internalStart(AbstractComponentRegistry.java:626)
at
org.infinispan.factories.AbstractComponentRegistry.start(AbstractComponentRegistry.java:530)
at
org.infinispan.factories.GlobalComponentRegistry.start(GlobalComponentRegistry.java:200)
... 38 more
Caused by: org.infinispan.CacheException: java.lang.NullPointerException: the specifed
protocol stack configuration was null
at
org.infinispan.remoting.transport.jgroups.JGroupsTransport.buildChannel(JGroupsTransport.java:333)
at
org.infinispan.remoting.transport.jgroups.JGroupsTransport.initChannel(JGroupsTransport.java:252)
at
org.infinispan.remoting.transport.jgroups.JGroupsTransport.initChannelAndRPCDispatcher(JGroupsTransport.java:292)
at
org.infinispan.remoting.transport.jgroups.JGroupsTransport.start(JGroupsTransport.java:170)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.infinispan.util.ReflectionUtil.invokeAccessibly(ReflectionUtil.java:236)
... 43 more
Caused by: java.lang.NullPointerException: the specifed protocol stack configuration was
null
at
org.jgroups.conf.ConfiguratorFactory.checkForNullConfiguration(ConfiguratorFactory.java:228)
at
org.jgroups.conf.ConfiguratorFactory.getStackConfigurator(ConfiguratorFactory.java:60)
at org.jgroups.JChannel.<init>(JChannel.java:136)
at
org.infinispan.remoting.transport.jgroups.JGroupsTransport.buildChannel(JGroupsTransport.java:330)
... 51 more
I guess the reason why the exception is given first when DefaultCacheManager.getCache(...)
is called, is because it is initialized lazily. Sadly, this goes against "Fail
early" and it would be useful if the file could not be read at configuration time.
Also, if the file cannot be found/read there should a be a separate Exception thrown for
this that states that fact.
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