ClassCastException when error is a String

[ypujante]

StateMachineImpl allow for an error to be a String but when it is the case, it does not handle it properly (calling waitForState will throw an exception)

2011/05/23 03:45:22.330 WARN [/CrawlerSpawn/i001] Exception while running monitor: Can't get http://ofl9.crawl.outbrain.com:8080/CrawlerSpawn//selftest?format=text to /outbrain/glu/org.linkedin.glu.packaging-all-1.5.1/org.linkedin.glu.agent-server-1.5.1/data/tmp/CrawlerSpawn/i001/__tmp1708500738Dir/selftest
2011/05/23 03:45:22.331 WARN [/CrawlerSpawn/i001] Self test failed => forcing new state stopped
2011/05/23 03:45:23.886 WARN [BaseResource] unexpected error while processing request
java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Throwable
at org.linkedin.groovy.util.state.StateMachineImpl$_waitForState_closure13.doCall(StateMachineImpl.groovy:308)
at sun.reflect.GeneratedMethodAccessor15011.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:88)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:273)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:886)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:39)

[ypujante]

Fixed with 1.6.1