[jboss-jira] [JBoss JIRA] (DROOLS-1193) MemoryUtil's static constructor call to ManagementFactory.getMemoryPoolMXBeans() fails on Google App Engine

[Geoffrey De Smet (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-1193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Geoffrey De Smet updated DROOLS-1193:
-------------------------------------
    Affects Version/s: 6.4.0.Final


> MemoryUtil's static constructor call to ManagementFactory.getMemoryPoolMXBeans() fails on Google App Engine
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: DROOLS-1193
>                 URL: https://issues.jboss.org/browse/DROOLS-1193
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 6.4.0.Final
>            Reporter: Geoffrey De Smet
>            Assignee: Mario Fusco
>
> {code}
>     [INFO] java.lang.NoClassDefFoundError: java.lang.management.ManagementFactory is a restricted class. Please see the Google  App Engine developer's guide for more details.
>     [INFO]  at com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:52)
>     [INFO]  at org.drools.core.util.MemoryUtil.<clinit>(MemoryUtil.java:33)
>     [INFO]  at java.lang.Class.forName0(Native Method)
>     [INFO]  at java.lang.Class.forName(Class.java:195)
>     [INFO]  at com.google.appengine.tools.development.agent.runtime.RuntimeHelper.checkRestricted(RuntimeHelper.java:70)
>     [INFO]  at com.google.appengine.tools.development.agent.runtime.Runtime.checkRestricted(Runtime.java:65)
>     [INFO]  at org.drools.core.RuleBaseConfiguration.setPermGenThreshold(RuleBaseConfiguration.java:583)
>     [INFO]  at org.drools.core.RuleBaseConfiguration.init(RuleBaseConfiguration.java:451)
>     [INFO]  at org.drools.core.RuleBaseConfiguration.init(RuleBaseConfiguration.java:429)
>     [INFO]  at org.drools.core.RuleBaseConfiguration.<init>(RuleBaseConfiguration.java:278)
>     [INFO]  at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieBaseConfiguration(KieServicesImpl.java:185)
> {code}
> the problem is in this code:
> {code}
>     static {
>         if (!hasPermGen() || ClassUtils.isAndroid()) { // hasPermGen is true because GAE doesn't support java 8 yet
>             permGenStats = new DummyMemoryStats();
>         } else {
>             MemoryPoolMXBean permGenBean = null;
>             for (MemoryPoolMXBean mx : ManagementFactory.getMemoryPoolMXBeans()) { // <=== EXCEPTION
>                 if (mx.getName() != null && mx.getName().contains("Perm")) {
>                     permGenBean = mx;
>                     break;
>                 }
>             }
>             permGenStats = new MBeanMemoryStats(permGenBean);
>         }
>     }
> {code}



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