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https://issues.apache.org/jira/browse/SYNCOPE-1448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16800686#comment-16800686
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ASF subversion and git services commented on SYNCOPE-1448:
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Commit 7426f5a7f8ca875b5e6a8a6ff1df2988e8650204 in syncope's branch
refs/heads/2_1_X from Francesco Chicchiriccò
[ https://gitbox.apache.org/repos/asf?p=syncope.git;h=7426f5a ]
[SYNCOPE-1448] Relying on Spring's concurrency checks
> Bean loading/register section not threadsafe
> --------------------------------------------
>
> Key: SYNCOPE-1448
> URL: https://issues.apache.org/jira/browse/SYNCOPE-1448
> Project: Syncope
> Issue Type: Bug
> Components: core
> Affects Versions: 2.1.3
> Reporter: longstone
> Assignee: Francesco Chicchiriccò
> Priority: Major
> Fix For: 2.1.4, 3.0.0
>
>
> Issue:
> When two threads (T1,T2) arrive the section {{if
> (ApplicationContextProvider.getBeanFactory().containsSingleton(ruleClass.getName()))
> {}}at the same time they will both assume that there is no bean, which is
> right so far.
> T1 register the bean as it should here
> {{ApplicationContextProvider.getBeanFactory().registerSingleton(ruleClass.getName(),
> rule);}}. As soon as T2does the same, an exception is thrown.
> Solution:
> When T1 and T2 found that a given bean is not there, they'll hit a
> synchronized section with double checking. This will prevent the duplicated
> creation and registration of a bean.
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