[infinispan-issues] [JBoss JIRA] (ISPN-1921) Non-existent JGroups config file gives unclear exception

Non-existent 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: Vladimir Blagojevic Priority: Minor Labels: configuration Fix For: 5.1.3.FINAL Original Estimate: 40 minutes Remaining Estimate: 40 minutes 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.