| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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.geode.distributed.internal.membership; |
| |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.geode.distributed.internal.DistributionMessage; |
| import org.apache.geode.distributed.internal.direct.DirectChannelListener; |
| |
| public interface DistributedMembershipListener extends DirectChannelListener { |
| |
| /** this method is invoked when the processing of a new view is completed */ |
| void viewInstalled(NetView view); |
| |
| /** |
| * this is invoked when there has been a loss of quorum and enable-network-partition-detection is |
| * not enabled |
| */ |
| void quorumLost(Set<InternalDistributedMember> failures, |
| List<InternalDistributedMember> remainingMembers); |
| |
| /** |
| * Event indicating that a new member has joined the system. |
| * |
| * @param m the new member |
| */ |
| void newMemberConnected(InternalDistributedMember m); |
| |
| /** |
| * Event indicating that a member has left the system |
| * |
| * @param id the member who has left |
| * @param crashed true if the departure was unexpected |
| * @param reason a characterization of the departure |
| */ |
| void memberDeparted(InternalDistributedMember id, boolean crashed, String reason); |
| |
| /** |
| * Event indicating that a member is suspected of having departed but is still in the membership |
| * view |
| */ |
| void memberSuspect(InternalDistributedMember suspect, InternalDistributedMember whoSuspected, |
| String reason); |
| |
| /** |
| * Event indicating a message has been delivered that we need to process. |
| * |
| * @param o the message that should be processed. |
| */ |
| @Override |
| void messageReceived(DistributionMessage o); |
| |
| /** |
| * Event indicating that the membership service has failed catastrophically. |
| * |
| */ |
| void membershipFailure(String reason, Throwable t); |
| |
| /** |
| * Support good logging on this listener |
| * |
| * @return a printable string for this listener |
| */ |
| String toString(); |
| |
| /** |
| * Save the configuration before a force disconnect. |
| * |
| * This method should probably be merged with memberFailure, but currently the |
| * places we save the configuration don't line up with where we call |
| * memberFailure. |
| */ |
| void saveConfig(); |
| |
| } |