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From "Bruno P. Kinoshita (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LANG-1333) ThresholdCircuitBreaker checkState method contradicts javadoc/interface
Date Thu, 15 Jun 2017 22:26:00 GMT

     [ https://issues.apache.org/jira/browse/LANG-1333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bruno P. Kinoshita updated LANG-1333:
-------------------------------------
    Assignee: Bruno P. Kinoshita

> ThresholdCircuitBreaker checkState method contradicts javadoc/interface
> -----------------------------------------------------------------------
>
>                 Key: LANG-1333
>                 URL: https://issues.apache.org/jira/browse/LANG-1333
>             Project: Commons Lang
>          Issue Type: Bug
>          Components: lang.concurrent.*
>    Affects Versions: 3.5
>         Environment: java 8
>            Reporter: vasumathi sridharan
>            Assignee: Bruno P. Kinoshita
>            Priority: Minor
>
> The [ThresholdCircuitBreaker impl |https://github.com/apache/commons-lang/blob/master/src/main/java/org/apache/commons/lang3/concurrent/ThresholdCircuitBreaker.java]
> does not seem to comply with the interface. The [checkState | https://commons.apache.org/proper/commons-lang/apidocs/org/apache/commons/lang3/concurrent/AbstractCircuitBreaker.html#checkState--]
method should return whether the circuit is closed or not. However, it returns isOpen(). This
contradicts what's given in the java doc example 
> Example:
> ThresHoldCircuitBreaker breaker = new ThresholdCircuitBreaker(10L);
> breaker.incrementAndCheckState(9L) returns false meaning the circuit is closed and the
requests should pass through. The checkState method should return true for below example in
javadoc to be correct
> {code}/**
> public void handleRequest(Request request) {
>  *     long memoryUsed = estimateMemoryUsage(request);
>  *     if (breaker.incrementAndCheckState(memoryUsed)) {
>  *         // actually handle this request
>  *     } else {
>  *         // do something else, e.g. send an error code
>  *     }
>  * }
> */{code}



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