| /* |
| * Copyright 1999,2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.catalina.tribes; |
| |
| |
| /** |
| * The membership service helps the cluster determine the membership |
| * logic in the cluster. |
| * @author Filip Hanik |
| * @version $Revision: 378093 $, $Date: 2006-02-15 15:13:45 -0600 (Wed, 15 Feb 2006) $ |
| */ |
| |
| |
| public interface MembershipService { |
| |
| public static final int MBR_RX = 1; |
| public static final int MBR_TX = 2; |
| |
| /** |
| * Sets the properties for the membership service. This must be called before |
| * the <code>start()</code> method is called. |
| * The properties are implementation specific. |
| * @param properties - to be used to configure the membership service. |
| */ |
| public void setProperties(java.util.Properties properties); |
| /** |
| * Returns the properties for the configuration used. |
| */ |
| public java.util.Properties getProperties(); |
| /** |
| * Starts the membership service. If a membership listeners is added |
| * the listener will start to receive membership events. |
| * Performs a start level 1 and 2 |
| * @throws java.lang.Exception if the service fails to start. |
| */ |
| public void start() throws java.lang.Exception; |
| |
| /** |
| * Starts the membership service. If a membership listeners is added |
| * the listener will start to receive membership events. |
| * @param level - level 1 starts listening for members, level 2 |
| * starts broad casting the server |
| * @throws java.lang.Exception if the service fails to start. |
| */ |
| public void start(int level) throws java.lang.Exception; |
| |
| |
| /** |
| * Stops the membership service |
| */ |
| public void stop(); |
| |
| /** |
| * Returns that cluster has members. |
| */ |
| public boolean hasMembers(); |
| |
| |
| public Member getMember(Member mbr); |
| /** |
| * Returns a list of all the members in the cluster. |
| */ |
| |
| public Member[] getMembers(); |
| |
| /** |
| * Returns the member object that defines this member |
| */ |
| public Member getLocalMember(boolean incAliveTime); |
| |
| /** |
| * Return all members by name |
| */ |
| public String[] getMembersByName() ; |
| |
| /** |
| * Return the member by name |
| */ |
| public Member findMemberByName(String name) ; |
| |
| /** |
| * Sets the local member properties for broadcasting |
| */ |
| public void setLocalMemberProperties(String listenHost, int listenPort); |
| |
| /** |
| * Sets the membership listener, only one listener can be added. |
| * If you call this method twice, the last listener will be used. |
| * @param listener The listener |
| */ |
| public void setMembershipListener(MembershipListener listener); |
| |
| /** |
| * removes the membership listener. |
| */ |
| public void removeMembershipListener(); |
| |
| } |