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https://issues.apache.org/jira/browse/CXF-5016?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Freeman Fang reassigned CXF-5016:
---------------------------------
Assignee: Freeman Fang
> ArithmeticException on ResponseTimeCounterMBean.getAvgResponseTime() after
> counter reset()
> ------------------------------------------------------------------------------------------
>
> Key: CXF-5016
> URL: https://issues.apache.org/jira/browse/CXF-5016
> Project: CXF
> Issue Type: Bug
> Components: Management
> Affects Versions: 2.7.0
> Reporter: Emmanuel FOUCHE
> Assignee: Freeman Fang
> Priority: Minor
>
> A JMX client program such as monitoring platform (Nagios plugin, HypericHQ,
> ...) retrieve metrics like AvgResponseTime per minute.
> One way to retrieve data is to fetch value every minute and reset counter
> immediately after.
> However, if no calls to the service has been made since last reset, you get
> an ArithmeticException "divide by zero" when calling
> ResponseTimeCounterMBean.getAvgResponseTime()
> I suggest handling this case by returning 0 or -1 instead, thus avoiding
> exception and alarming stacktrace on the monitoring client side.
> {code:title=ResponseTimeCounter.getAvgResponseTime()}
> public Number getAvgResponseTime() {
> if (_invocations.get() == 0) {
> return -1; // avoid divide by 0;
> }
> return (int)(totalHandlingTime / invocations.get());
> }
> {code}
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