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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://issues.shibboleth.net/jira/browse/JOST" style="color: #3b73af; text-decoration: none">OpenSAML 2 - Java</a> / <a href="https://issues.shibboleth.net/jira/browse/JOST-249" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-9fe588ee-d19e-491b-983d-d429f4769bba" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://issues.shibboleth.net/jira/browse/JOST-249" style="color: #3b73af; text-decoration: none">JOST-249</a>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.shibboleth.net/jira/browse/JOST-249" style="color: #3b73af; text-decoration: none">Small memory leak in ChainingMetadataProvider</a> </span>
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Issue Type:
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Affects Versions:
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2.6.6
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Assignee:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="putmanb@shibboleth.net" id="email_putmanb@shibboleth.net" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=putmanb%40shibboleth.net" style="color:#3b73af;; color: #3b73af; text-decoration: none">Brent Putman</a>
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Components:
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SAML 2
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Created:
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08/Feb/16 7:33 AM
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Environment:
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Wrapped by Spring SAML2 1.0.1.RELEASE.</p>
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Priority:
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Reporter:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="bananetomate@idp.protectnetwork.org" id="email_bananetomate@idp.protectnetwork.org" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=bananetomate%40idp.protectnetwork.org" style="color:#3b73af;; color: #3b73af; text-decoration: none">bananetomate@idp.protectnetwork.org</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">When uploading IdP metadata or changing the SP keys it would be expected that the IdP and SP metadata providers' list of observers does not continue to grow if the same observers are added.<br /> Actually, the list gets longer each time IdP metadata is uploaded or SP keys are changed. </p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Very specifically the issue seems to be in <tt>ChainingMetadataProvider.doAddMetadataProvider()</tt>. In that method an observer is added to the provider without checking if it already exists. So each time a metadata change occurs another observer is added to a provider and that list continues to grow. </p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The specific class that implements <tt>Observer</tt> added to the list is an inner class of the actual class that is doing the observing. The main issues here is that the inner class is private and only has one method defined <tt>onEvent()</tt>. Without a reference to the outer class instance (the actual observer) it can't properly determine if the same outer class observer has been added again. Each time a new instance of the inner class is created and added to the list its outer class is still the same instance of the object doing the observing. Essentially a new inner class instance is created each time (that implements <tt>Observer</tt>) and it wraps the same instance of its outer class.</p>
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