| /* |
| * Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.corba.se.impl.transport; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.omg.CORBA.COMM_FAILURE; |
| import org.omg.CORBA.CompletionStatus; |
| import org.omg.CORBA.INTERNAL; |
| import org.omg.CORBA.SystemException; |
| |
| import com.sun.corba.se.pept.transport.ContactInfo ; |
| import com.sun.corba.se.pept.transport.ContactInfoList ; |
| |
| import com.sun.corba.se.spi.ior.IOR ; |
| import com.sun.corba.se.spi.logging.CORBALogDomains; |
| import com.sun.corba.se.spi.orb.ORB ; |
| import com.sun.corba.se.spi.transport.CorbaContactInfo; |
| import com.sun.corba.se.spi.transport.CorbaContactInfoList; |
| import com.sun.corba.se.spi.transport.CorbaContactInfoListIterator; |
| import com.sun.corba.se.spi.transport.IIOPPrimaryToContactInfo; |
| |
| import com.sun.corba.se.impl.logging.ORBUtilSystemException; |
| import com.sun.corba.se.impl.protocol.CorbaInvocationInfo; |
| |
| // REVISIT: create a unit test for this class. |
| |
| public class CorbaContactInfoListIteratorImpl |
| implements |
| CorbaContactInfoListIterator |
| { |
| protected ORB orb; |
| protected CorbaContactInfoList contactInfoList; |
| protected CorbaContactInfo successContactInfo; |
| protected CorbaContactInfo failureContactInfo; |
| protected RuntimeException failureException; |
| |
| // ITERATOR state |
| protected Iterator effectiveTargetIORIterator; |
| protected CorbaContactInfo previousContactInfo; |
| protected boolean isAddrDispositionRetry; |
| protected IIOPPrimaryToContactInfo primaryToContactInfo; |
| protected ContactInfo primaryContactInfo; |
| protected List listOfContactInfos; |
| // End ITERATOR state |
| |
| public CorbaContactInfoListIteratorImpl( |
| ORB orb, |
| CorbaContactInfoList corbaContactInfoList, |
| ContactInfo primaryContactInfo, |
| List listOfContactInfos) |
| { |
| this.orb = orb; |
| this.contactInfoList = corbaContactInfoList; |
| this.primaryContactInfo = primaryContactInfo; |
| if (listOfContactInfos != null) { |
| // listOfContactInfos is null when used by the legacy |
| // socket factory. In that case this iterator is NOT used. |
| this.effectiveTargetIORIterator = listOfContactInfos.iterator(); |
| } |
| // List is immutable so no need to synchronize access. |
| this.listOfContactInfos = listOfContactInfos; |
| |
| this.previousContactInfo = null; |
| this.isAddrDispositionRetry = false; |
| |
| this.successContactInfo = null; |
| this.failureContactInfo = null; |
| this.failureException = null; |
| |
| primaryToContactInfo = orb.getORBData().getIIOPPrimaryToContactInfo(); |
| } |
| |
| //////////////////////////////////////////////////// |
| // |
| // java.util.Iterator |
| // |
| |
| public boolean hasNext() |
| { |
| // REVISIT: Implement as internal closure iterator which would |
| // wraps sticky or default. Then hasNext and next just call |
| // the closure. |
| |
| if (isAddrDispositionRetry) { |
| return true; |
| } |
| |
| boolean result; |
| |
| if (primaryToContactInfo != null) { |
| result = primaryToContactInfo.hasNext(primaryContactInfo, |
| previousContactInfo, |
| listOfContactInfos); |
| } else { |
| result = effectiveTargetIORIterator.hasNext(); |
| } |
| |
| return result; |
| } |
| |
| public Object next() |
| { |
| if (isAddrDispositionRetry) { |
| isAddrDispositionRetry = false; |
| return previousContactInfo; |
| } |
| |
| // We hold onto the last in case we get an addressing |
| // disposition retry. Then we use it again. |
| |
| // We also hold onto it for the sticky manager. |
| |
| if (primaryToContactInfo != null) { |
| previousContactInfo = (CorbaContactInfo) |
| primaryToContactInfo.next(primaryContactInfo, |
| previousContactInfo, |
| listOfContactInfos); |
| } else { |
| previousContactInfo = (CorbaContactInfo) |
| effectiveTargetIORIterator.next(); |
| } |
| |
| return previousContactInfo; |
| } |
| |
| public void remove() |
| { |
| throw new UnsupportedOperationException(); |
| } |
| |
| //////////////////////////////////////////////////// |
| // |
| // com.sun.corba.se.pept.transport.ContactInfoListIterator |
| // |
| |
| public ContactInfoList getContactInfoList() |
| { |
| return contactInfoList; |
| } |
| |
| public void reportSuccess(ContactInfo contactInfo) |
| { |
| this.successContactInfo = (CorbaContactInfo)contactInfo; |
| } |
| |
| public boolean reportException(ContactInfo contactInfo, |
| RuntimeException ex) |
| { |
| this.failureContactInfo = (CorbaContactInfo)contactInfo; |
| this.failureException = ex; |
| if (ex instanceof COMM_FAILURE) { |
| SystemException se = (SystemException) ex; |
| if (se.completed == CompletionStatus.COMPLETED_NO) { |
| if (hasNext()) { |
| return true; |
| } |
| if (contactInfoList.getEffectiveTargetIOR() != |
| contactInfoList.getTargetIOR()) |
| { |
| // retry from root ior |
| updateEffectiveTargetIOR(contactInfoList.getTargetIOR()); |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| public RuntimeException getFailureException() |
| { |
| if (failureException == null) { |
| return |
| ORBUtilSystemException.get( orb, |
| CORBALogDomains.RPC_TRANSPORT ) |
| .invalidContactInfoListIteratorFailureException(); |
| } else { |
| return failureException; |
| } |
| } |
| |
| //////////////////////////////////////////////////// |
| // |
| // spi.CorbaContactInfoListIterator |
| // |
| |
| public void reportAddrDispositionRetry(CorbaContactInfo contactInfo, |
| short disposition) |
| { |
| previousContactInfo.setAddressingDisposition(disposition); |
| isAddrDispositionRetry = true; |
| } |
| |
| public void reportRedirect(CorbaContactInfo contactInfo, |
| IOR forwardedIOR) |
| { |
| updateEffectiveTargetIOR(forwardedIOR); |
| } |
| |
| //////////////////////////////////////////////////// |
| // |
| // Implementation. |
| // |
| |
| // |
| // REVISIT: |
| // |
| // The normal operation for a standard iterator is to throw |
| // ConcurrentModificationException whenever the underlying collection |
| // changes. This is implemented by keeping a modification counter (the |
| // timestamp may fail because the granularity is too coarse). |
| // Essentially what you need to do is whenever the iterator fails this |
| // way, go back to ContactInfoList and get a new iterator. |
| // |
| // Need to update CorbaClientRequestDispatchImpl to catch and use |
| // that exception. |
| // |
| |
| public void updateEffectiveTargetIOR(IOR newIOR) |
| { |
| contactInfoList.setEffectiveTargetIOR(newIOR); |
| // If we report the exception in _request (i.e., beginRequest |
| // we cannot throw RemarshalException to the stub because _request |
| // does not declare that exception. |
| // To keep the two-level dispatching (first level chooses ContactInfo, |
| // second level is specific to that ContactInfo/EPT) we need to |
| // ensure that the request dispatchers get their iterator from the |
| // InvocationStack (i.e., ThreadLocal). That way if the list iterator |
| // needs a complete update it happens right here. |
| ((CorbaInvocationInfo)orb.getInvocationInfo()) |
| .setContactInfoListIterator(contactInfoList.iterator()); |
| } |
| } |
| |
| // End of file. |
