| /* |
| * Copyright (c) 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.spi.transport; |
| |
| import java.util.List; |
| |
| import com.sun.corba.se.pept.transport.ContactInfo; |
| |
| /** |
| * This interface is the "sticky manager" for IIOP failover. The default |
| * ORB does NOT contain a sticky manager. One is registered by supplying |
| * a class via the com.sun.CORBA.transport.ORBIIOPPrimaryToContactInfoClass. |
| * |
| * It uses the IIOP primary host/port (with a SocketInfo.IIOP_CLEAR_TEXT type) |
| * as a key to map to the last ContactInfo that resulted in successful' |
| * communication. |
| * |
| * It mainly prevents "fallback" - if a previously failed replica comes |
| * back up we do NOT want to switch back to using it - particularly in the |
| * case of statefull session beans. |
| * |
| * Note: This assumes static lists of replicas (e.g., AS 8.1 EE). |
| * This does NOT work well with LOCATION_FORWARD. |
| * |
| * @author Harold Carr |
| */ |
| public interface IIOPPrimaryToContactInfo |
| { |
| /** |
| * @param primary - clear any state relating to primary. |
| */ |
| public void reset(ContactInfo primary); |
| |
| /** |
| * @param primary - the key. |
| * @param previous - if null return true. Otherwise, find previous in |
| * <code>contactInfos</code> and if another <code>ContactInfo</code> |
| * follows it in the list then return true. Otherwise false. |
| * @param contactInfos - the list of replicas associated with the |
| * primary. |
| */ |
| public boolean hasNext(ContactInfo primary, |
| ContactInfo previous, |
| List contactInfos); |
| |
| /** |
| * @param primary - the key. |
| * @param previous - if null then map primary to failover. If failover is |
| * empty then map primary to primary and return primary. If failover is |
| * non-empty then return failover. If previous is non-null that |
| * indicates that the previous failed. Therefore, find previous in |
| * contactInfos. Map the <code>ContactInfo</code> following |
| * previous to primary and return that <code>ContactInfo</code>. |
| */ |
| public ContactInfo next(ContactInfo primary, |
| ContactInfo previous, |
| List contactInfos); |
| |
| } |
| |
| // End of file. |