[jboss-jira] [JBoss JIRA] (WFLY-6287) CXFHandlerResolverImpl not threadsafe

[Bjørn Hilstad (JIRA)]

Bjørn Hilstad created WFLY-6287:
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             Summary: CXFHandlerResolverImpl not threadsafe
                 Key: WFLY-6287
                 URL: https://issues.jboss.org/browse/WFLY-6287
             Project: WildFly
          Issue Type: Bug
          Components: Web Services
    Affects Versions: 9.0.1.Final
            Reporter: Bjørn Hilstad
            Assignee: Alessio Soldano


When the concurrency of handler-chain parsing increases , the following error shows up in the logs:

Caused by: org.xml.sax.SAXException: FWK005 parse may not be called while parsing.
        at org.apache.xerces.parsers.DOMParser.parse(DOMParser.java:260)
        at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:298)
        at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:121)
        at org.jboss.wsf.stack.cxf.client.serviceref.CXFHandlerResolverImpl.createHandlerChain(CXFHandlerResolverImpl.java:161)
        ... 132 more

One case where I have seen this is when an EJB/MDB uses @WebServiceRef and @HandlerChain to get a reference to a webservice.
When multiple instances of the EJB/MDB are created at the same time to handle a lot of messages this happens.
It is the @HandlerChain that triggers the xml parsing and gives the error.
The Xerces DocumentBuilder is not threadsafe and thus requires code to synchronize it correctly.




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