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https://issues.apache.org/jira/browse/AXIS-2800?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andreas Veithen updated AXIS-2800:
----------------------------------
Labels: thread-safety (was: )
> Axis locators not thread safe (java.util.ConcurrentModificationException:
> concurrent access to HashMap attempted by Thread)
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: AXIS-2800
> URL: https://issues.apache.org/jira/browse/AXIS-2800
> Project: Axis
> Issue Type: Bug
> Components: Basic Architecture
> Affects Versions: 1.4
> Environment: Axis version: 1.4
> Jre version: 1.5
> windows server 2003 R2 Service pack 2
> Websphere version : 6.1.0.25
> Reporter: pawan bhole
> Labels: thread-safety
>
> i am creating locators only once and storing those in HashMap. And at every
> service call (by multiple threads parallely) I am just retriving locators
> from HashMap and using those for creating methode call.
> Code:
> public class WsClientRetriever {
> protected final Log log = LogFactory.getLog(getClass());
>
> protected final HashMap<Class<? extends Service>,Object> servicesMapCache
> = new HashMap<Class<? extends Service>, Object>();
>
> /**
> * The url for the services
> */
> private String rootUrl;
>
> /**
> * This generic method will return the WebService class using the given
> web service locator class
> * @param serviceLocatorClass
> * @return
> * @throws ServiceRetrievalException if the service could not be
> retrieved in any ways
> */
> public synchronized Object getWebService(Class<? extends Service>
> serviceLocatorClass) throws ServiceRetrievalException {
> Object locator = servicesMapCache.get(serviceLocatorClass);
> Object result = null;
> // it's not in our cache, we have to get it using reflexion
> try {
> if (locator == null) {
> locator = serviceLocatorClass.newInstance();
> servicesMapCache.put(serviceLocatorClass, locator);
> }
> Method[] methods = serviceLocatorClass.getMethods();
> // we look for the method that needs an URL as parameter and
> starts with get
> for (int i = 0; i < methods.length; i++) {
> Method method = methods[i];
> if (method.getName().startsWith("get") &&
> (method.getParameterTypes().length == 1) && (method.getParameterTypes()[0] ==
> URL.class)){
> // we found it, we need to call it
> result = method.invoke(locator,
> getWSURL(serviceLocatorClass));
> }
>
> }
> } catch (Exception e) {
> throw new ServiceRetrievalException(serviceLocatorClass, e);
> }
> // now we are sure to have it
> return result;
> }
>
> /**
> * Creates the URL to access the web service
> * @param serviceLocatorClass service locator class name
> * @return URL of the service where deployed
> */
> private URL getWSURL(Class<? extends Service> serviceLocatorClass) {
> String slClassName = serviceLocatorClass.getName();
> String serviceClassName =
> slClassName.substring(slClassName.lastIndexOf('.') + 1,
> slClassName.lastIndexOf("ServiceLocator"));
> String serviceURLString = rootUrl + serviceClassName;
> URL serviceURL = null;
> try {
> serviceURL = new URL(serviceURLString);
> return serviceURL;
> } catch (MalformedURLException e) {
> log.debug("caught an exception", e);
> throw new WebServiceRetrievalException(serviceURLString, e);
> }
> }
> /**
> * @param rootUrl the rootUrl to set
> */
> public void setRootUrl(String rootUrl) {
> this.rootUrl = rootUrl;
> if (this.rootUrl != null && !this.rootUrl.endsWith("/")) {
> this.rootUrl += "/";
> }
> }
> }
>
> *********************************************************************************************************************************
> stack trace :
> [8/13/09 16:55:21:077 IST] 00000026 ExceptionUtil E CNTR0020E: EJB threw an
> unexpected (non-declared) exception during invocation of method "onMessage"
> on bean
> "BeanId(ProPayEAR#ProPayEJB-1.2-ENGINE-SPR7-IT1-SNAPSHOT.jar#MessageProcessor,
> null)". Exception data: java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:618)
> at
> com.ibm.ejs.jms.listener.ServerSessionDispatcher.dispatch(ServerSessionDispatcher.java:37)
> at com.ibm.ejs.container.MDBWrapper.onMessage(MDBWrapper.java:96)
> at com.ibm.ejs.container.MDBWrapper.onMessage(MDBWrapper.java:132)
> at com.ibm.ejs.jms.listener.ServerSession.run(ServerSession.java:492)
> at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1497)
> Caused by: java.lang.RuntimeException:
> com.te.jpay.exception.EnvironmentalException: Failure trying to get the Call
> object; nested exception is:
> java.util.ConcurrentModificationException: concurrent access to HashMap
> attempted by Thread[MessageListenerThreadPool : 0,5,main]
> at
> com.te.jpay.ejb.messagesreceiver.MessagesProcessorBean.onMessage(MessagesProcessorBean.java:62)
> at
> com.ibm.ejs.jms.listener.MDBWrapper$PriviledgedOnMessage.run(MDBWrapper.java:302)
> at
> com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:63)
> at
> com.ibm.ejs.jms.listener.MDBWrapper.callOnMessage(MDBWrapper.java:271)
> at com.ibm.ejs.jms.listener.MDBWrapper.onMessage(MDBWrapper.java:240)
> at com.ibm.mq.jms.MQSession.run(MQSession.java:1691)
> at com.ibm.ejs.jms.JMSSessionHandle.run(JMSSessionHandle.java:975)
> at
> com.ibm.ejs.jms.listener.ServerSession.connectionConsumerOnMessage(ServerSession.java:957)
> at
> com.ibm.ejs.jms.listener.ServerSession.onMessage(ServerSession.java:667)
> at
> com.ibm.ejs.jms.listener.ServerSession.dispatch(ServerSession.java:634)
> ... 9 more
> Caused by: com.te.jpay.exception.EnvironmentalException: Failure trying to
> get the Call object; nested exception is:
> java.util.ConcurrentModificationException: concurrent access to HashMap
> attempted by Thread[MessageListenerThreadPool : 0,5,main]
> at
> com.te.jpay.backendintegration.tietoapps.jdir.CreditMechanismHelperWsImpl.getCreditMechanism(CreditMechanismHelperWsImpl.java:75)
> at
> com.te.jpay.backendintegration.tietoapps.jdir.CreditMechanismHelperWsImpl.assignCreditMechanism(CreditMechanismHelperWsImpl.java:101)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:618)
> at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
> at
> org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:77)
> at
> org.perf4j.aop.AbstractTimingAspect.doPerfLogging(AbstractTimingAspect.java:69)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:618)
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:627)
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:616)
> at
> org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:64)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:160)
> at
> org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
> at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
> at $Proxy73.assignCreditMechanism(Unknown Source)
> at
> com.te.jpay.backendintegration.tietoapps.jdir.JDirectoryClientImpl.assignCreditMechanism(JDirectoryClientImpl.java:123)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:618)
> at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
> at
> org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:77)
> at
> org.perf4j.aop.AbstractTimingAspect.doPerfLogging(AbstractTimingAspect.java:69)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:618)
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:627)
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:616)
> at
> org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:64)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:160)
> at
> org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
> at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
> at $Proxy76.assignCreditMechanism(Unknown Source)
> at
> com.te.jpay.processing.InwardDDCollectionReceiverImpl.performGroupLevelProcessing(InwardDDCollectionReceiverImpl.java:110)
> at
> com.te.jpay.processing.InwardDDCollectionReceiverImpl.doBusinessLogic(InwardDDCollectionReceiverImpl.java:64)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:618)
> at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
> at
> org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:77)
> at
> org.perf4j.aop.AbstractTimingAspect.doPerfLogging(AbstractTimingAspect.java:69)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:618)
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:627)
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:616)
> at
> org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:64)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:160)
> at
> org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
> at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
> at $Proxy77.doBusinessLogic(Unknown Source)
> at
> com.te.jpay.dispatch.DefaultPaymentDispatcher.dispatchMessageFromBulker(DefaultPaymentDispatcher.java:108)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:618)
> at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
> at
> org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:77)
> at
> org.perf4j.aop.AbstractTimingAspect.doPerfLogging(AbstractTimingAspect.java:69)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:618)
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:627)
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:616)
> at
> org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:64)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:160)
> at
> org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
> at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
> at $Proxy78.dispatchMessageFromBulker(Unknown Source)
> at
> com.te.jpay.ejb.messagesreceiver.MessagesProcessorBean.onMessage(MessagesProcessorBean.java:49)
> ... 18 more
> Caused by: Failure trying to get the Call object; nested exception is:
> java.util.ConcurrentModificationException: concurrent access to HashMap
> attempted by Thread[MessageListenerThreadPool : 0,5,main]
> at
> com.te.prodirectory.ws.client.mechanism.MechanismWSSoapBindingStub.createCall(MechanismWSSoapBindingStub.java:384)
> at
> com.te.prodirectory.ws.client.mechanism.MechanismWSSoapBindingStub.getMechanismParameterByCodeword(MechanismWSSoapBindingStub.java:460)
> at
> com.te.jpay.backendintegration.tietoapps.jdir.CreditMechanismHelperWsImpl.getCreditMechanism(CreditMechanismHelperWsImpl.java:73)
> ... 108 more
> Caused by: java.util.ConcurrentModificationException: concurrent access to
> HashMap attempted by Thread[MessageListenerThreadPool : 0,5,main]
> at java.util.HashMap.onExit(HashMap.java:226)
> at java.util.HashMap.transfer(HashMap.java:690)
> at java.util.HashMap.resize(HashMap.java:676)
> at java.util.HashMap.addEntry(HashMap.java:1049)
> at java.util.HashMap.put(HashMap.java:561)
> at
> org.apache.axis.encoding.TypeMappingImpl.internalRegister(TypeMappingImpl.java:263)
> at
> org.apache.axis.encoding.TypeMappingImpl.register(TypeMappingImpl.java:221)
> at
> org.apache.axis.encoding.TypeMappingDelegate.register(TypeMappingDelegate.java:73)
> at org.apache.axis.client.Call.registerTypeMapping(Call.java:2285)
> at org.apache.axis.client.Call.registerTypeMapping(Call.java:2322)
> at
> com.te.prodirectory.ws.client.mechanism.MechanismWSSoapBindingStub.createCall(MechanismWSSoapBindingStub.java:369)
> ... 110 more
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