/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2002, 2011 Oracle and/or its affiliates. All rights reserved.
*
*/
package com.sleepycat.je.rep.monitor;
import java.io.IOException;
import java.nio.channels.SocketChannel;
import java.util.logging.Formatter;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.sleepycat.je.rep.ReplicationGroup;
import com.sleepycat.je.rep.impl.TextProtocol.RequestMessage;
import com.sleepycat.je.rep.impl.TextProtocol.ResponseMessage;
import com.sleepycat.je.rep.monitor.Protocol.GroupChange;
import com.sleepycat.je.rep.monitor.Protocol.JoinGroup;
import com.sleepycat.je.rep.monitor.Protocol.LeaveGroup;
import com.sleepycat.je.rep.utilint.ReplicationFormatter;
import com.sleepycat.je.rep.utilint.ServiceDispatcher;
import com.sleepycat.je.rep.utilint.ServiceDispatcher.ExecutingService;
import com.sleepycat.je.rep.utilint.ServiceDispatcher.ExecutingRunnable;
import com.sleepycat.je.utilint.LoggerUtils;
/**
* @hidden
* For internal use only.
*/
public class MonitorService extends ExecutingService {
private final Monitor monitor;
private final Protocol protocol;
private final Logger logger;
private final Formatter formatter;
/* Identifies the Group Service. */
public static final String SERVICE_NAME = "Monitor";
public MonitorService(Monitor monitor,
ServiceDispatcher dispatcher) {
super(SERVICE_NAME, dispatcher);
this.monitor = monitor;
protocol = new Protocol(monitor.getGroupName(),
monitor.getMonitorNameIdPair(),
null);
logger = LoggerUtils.getLoggerFormatterNeeded(getClass());
formatter = new ReplicationFormatter(monitor.getMonitorNameIdPair());
}
/* Dynamically invoked process methods */
/**
* Notify the monitor about the group change (add/remove a node) event.
*/
public ResponseMessage process(GroupChange groupChange) {
GroupChangeEvent event =
new GroupChangeEvent(new ReplicationGroup(groupChange.getGroup()),
groupChange.getNodeName(),
groupChange.getOpType());
monitor.notifyGroupChange(event);
return null;
}
/**
* Notify the monitor about a node has joined the group.
*/
public ResponseMessage process(JoinGroup joinGroup) {
monitor.notifyJoin(new JoinGroupEvent(joinGroup.getNodeName(),
joinGroup.getMasterName(),
joinGroup.getJoinTime()));
return null;
}
/**
* Notify the monitor about a node has left the group.
*/
public ResponseMessage process(LeaveGroup leaveGroup) {
monitor.notifyLeave(new LeaveGroupEvent(leaveGroup.getNodeName(),
leaveGroup.getMasterName(),
leaveGroup.getLeaveReason(),
leaveGroup.getJoinTime(),
leaveGroup.getLeaveTime()));
return null;
}
@Override
public Runnable getRunnable(SocketChannel socketChannel) {
return new MonitorServiceRunnable(socketChannel, protocol);
}
class MonitorServiceRunnable extends ExecutingRunnable {
MonitorServiceRunnable(SocketChannel socketChannel,
Protocol protocol) {
super(socketChannel, protocol, false);
}
@Override
protected ResponseMessage getResponse(RequestMessage request)
throws IOException {
return protocol.process(MonitorService.this, request);
}
@Override
protected void logMessage(String message) {
LoggerUtils.logMsg(logger, formatter, Level.WARNING, message);
}
}
}