Dirk Rudolph created SLING-5070:
-----------------------------------
Summary: ServletResolverCacheMBeanImpl throws NPE when cache is
diabled
Key: SLING-5070
URL: https://issues.apache.org/jira/browse/SLING-5070
Project: Sling
Issue Type: Bug
Components: Servlets
Affects Versions: Servlets Resolver 2.3.6
Reporter: Dirk Rudolph
Priority: Minor
When setting the cache size configuration of SlingServletResolver to a value <
5 the cache will be disabled and therefor be null. This causes a NPE in the
MBean. So either the MBean is able to handle this or it will not be registered
in that case.
{code}
Caused by: java.lang.NullPointerException: null
at
org.apache.sling.servlets.resolver.internal.SlingServletResolver$ServletResolverCacheMBeanImpl.getCacheSize(SlingServletResolver.java:1383)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at
com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:112)
at
com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:46)
at
com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)
at
com.sun.jmx.mbeanserver.PerInterface.getAttribute(PerInterface.java:83)
at
com.sun.jmx.mbeanserver.MBeanSupport.getAttribute(MBeanSupport.java:206)
at javax.management.StandardMBean.getAttribute(StandardMBean.java:372)
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647)
... 67 common frames omitted
{code}
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