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https://issues.apache.org/jira/browse/GEODE-5455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16554492#comment-16554492
]
ASF subversion and git services commented on GEODE-5455:
--------------------------------------------------------
Commit e4ede167e489f521f906239c90a8714e080125f1 in geode's branch
refs/heads/develop from [~khowe]
[ https://gitbox.apache.org/repos/asf?p=geode.git;h=e4ede16 ]
GEODE-5455: add new tests to verify MemberMXBean method return types (#2169)
Verify that JMX MXBean proxy reconstructs correct return type from
CompositeDataSupport. Correct type recontruction of types such as OSMetrics
requires that the mxbean proxy is intantiated from JMX.newMXBeanProxy() not
javax.management.MBeanServerInvocationHandler.newProxyInstance(), which
returns an mbean proxy
> ClassCastException in MemberMBean.showOSMetrics, OSMetrics is not
> reconstructible from CompositeData
> ----------------------------------------------------------------------------------------------------
>
> Key: GEODE-5455
> URL: https://issues.apache.org/jira/browse/GEODE-5455
> Project: Geode
> Issue Type: Bug
> Components: jmx
> Affects Versions: 1.4.0
> Reporter: Kenneth Howe
> Assignee: Kenneth Howe
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The following code snippet throws
> {code}
> Exception in thread "main" java.lang.ClassCastException:
> javax.management.openmbean.CompositeDataSupport cannot be cast to
> org.apache.geode.management.OSMetrics at
> com.sun.proxy.$Proxy0.showOSMetrics(Unknown Source)
> {code}
> {code:java}
> public static MBeanServerConnection getLocalMBeanServerConnectionStatic(int
> pid) {
> try {
> String address = ConnectorAddressLink.importFrom(pid);
> JMXServiceURL jmxUrl = new JMXServiceURL(address);
> return JMXConnectorFactory.connect(jmxUrl).getMBeanServerConnection();
> } catch (IOException e) {
> throw new RuntimeException(
> "Of course you still have to implement a good connection handling");
> }
> }
> public static void main(String[] args) throws IOException,
> MalformedObjectNameException, InstanceNotFoundException,
> ReflectionException {
> MBeanServerConnection mbeanServerConnection =
> getLocalMBeanServerConnectionStatic(127510);
> ObjectName mbeanName = new
> ObjectName("GemFire:type=Member,member=server1");
> MemberMXBean
> memberbeanInstance =
> (MemberMXBean) MBeanServerInvocationHandler
> .newProxyInstance(mbeanServerConnection, mbeanName,
> MemberMXBean.class, Boolean.TRUE);
> System.out.println(Arrays.toString(memberbeanInstance.listRegions()));
> OSMetrics cdOSMetrics = memberbeanInstance.showOSMetrics();
> //.....
> }
> {code}
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