I'm trying the register and use the MINA-provided MBeans, following the
guide provided at
https://mina.apache.org/mina-project/userguide/ch16-jmx-support/ch16-jmx-support.html
Compile-time, everything is OK, and runtime, the beans appear to be
registered properly. However, whenever someone tries to access attributes
of one of the registered beans, this fails. Server-sided, this exception is
logged.
021.08.04 15:49:41 WARN [Jetty-QTP-BOSH-95]:
org.apache.mina.integration.jmx.ObjectMBean - Unexpected exception.
java.lang.RuntimeException: MemberAccess implementation must be provided!
at ognl.OgnlContext.<init>(OgnlContext.java:140)
~[ognl-3.2.10.jar:?]
at ognl.OgnlContext.<init>(OgnlContext.java:110)
~[ognl-3.2.10.jar:?]
at ognl.Ognl.createDefaultContext(Ognl.java:159)
~[ognl-3.2.10.jar:?]
at
org.apache.mina.integration.jmx.ObjectMBean.getAttribute(ObjectMBean.java:646)
~[mina-integration-jmx-2.1.3.jar:?]
at
org.apache.mina.integration.jmx.ObjectMBean.getAttribute(ObjectMBean.java:186)
~[mina-integration-jmx-2.1.3.jar:?]
at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:647)
~[?:1.8.0_292]
I'm not sure exactly how to interpret this. One possibility that I
considered was that I was missing concrete implemenations, so, in addition
to the dependencies:
- org.apache.mina:mina-core
- org.apache.mina:mina-integration-jmx
I experimented with adding:
- org.apache.mina:mina-integration-beans
- org.apache.mina:mina-integration-ognl
Sadly, that didn't make a difference. Do I need another dependency, or am I
looking at this entirely wrong?
Kind regards,
Guus
