JeetKunDoug commented on code in PR #2322:
URL: https://github.com/apache/cassandra/pull/2322#discussion_r1198193312
##########
src/java/org/apache/cassandra/utils/MBeanWrapper.java:
##########
@@ -33,62 +38,144 @@
*/
public interface MBeanWrapper
{
- static final Logger logger = LoggerFactory.getLogger(MBeanWrapper.class);
+ Logger logger = LoggerFactory.getLogger(MBeanWrapper.class);
- static final MBeanWrapper instance =
Boolean.getBoolean("org.apache.cassandra.disable_mbean_registration") ?
- new NoOpMBeanWrapper() :
- new PlatformMBeanWrapper();
+ MBeanWrapper instance = create();
+ String IS_DISABLED_MBEAN_REGISTRATION =
"org.apache.cassandra.disable_mbean_registration";
+ String IS_IN_JVM_DTEST = "org.apache.cassandra.is_in_jvm_dtest";
+ String MBEAN_REGISTRATION_CLASS =
"org.apache.cassandra.mbean_registration_class";
+
+ static MBeanWrapper create()
+ {
+ // If we're running in the in-jvm dtest environment, always use the
delegating
+ // mbean wrapper even if we start off with no-op, so it can be
switched later
+ if (Boolean.getBoolean(IS_IN_JVM_DTEST))
+ return new DelegatingMbeanWrapper(getmBeanWrapper());
+
+ return getmBeanWrapper();
+ }
+
+ static MBeanWrapper getmBeanWrapper()
+ {
+ if (Boolean.getBoolean(IS_DISABLED_MBEAN_REGISTRATION))
+ return new NoOpMBeanWrapper();
+
+ String klass = System.getProperty(MBEAN_REGISTRATION_CLASS);
+ if (klass == null)
+ if (Boolean.getBoolean(IS_IN_JVM_DTEST))
+ return new NoOpMBeanWrapper();
+ else
+ return new PlatformMBeanWrapper();
Review Comment:
Yeah - I get dinged for _including_ them so I try not to do it if it's only
single-lined.
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