/*
* 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.DistributionManager;
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 */
public void viewInstalled(NetView view);
/**
* this is invoked when there has been a loss of quorum and enable-network-partition-detection is
* not enabled
*/
public void quorumLost(Set<InternalDistributedMember> failures,
List<InternalDistributedMember> remainingMembers);
/**
* Event indicating that a new member has joined the system.
*
* @param m the new member
*/
public 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
*/
public 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
*
* @param reason TODO
*/
public 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.
*/
public void messageReceived(DistributionMessage o);
/**
* Indicates whether, during the shutdown sequence, if other members of the distributed system
* have been notified.
*
* This allows a membership manager to identify potential race conditions during the shutdown
* process.
*
* @return true if other members of the distributed system have been notified.
*/
public boolean isShutdownMsgSent();
/**
* Event indicating that the membership service has failed catastrophically.
*
*/
public void membershipFailure(String reason, Throwable t);
/**
* Support good logging on this listener
*
* @return a printable string for this listener
*/
public String toString();
}