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package com.sun.messaging.jmq.jmsserver.data.handlers.admin;
import java.util.Set;
import java.util.Hashtable;
import java.util.Properties;
import com.sun.messaging.jmq.io.Packet;
import com.sun.messaging.jmq.io.Status;
import com.sun.messaging.jmq.io.PacketType;
import com.sun.messaging.jmq.jmsserver.service.imq.IMQConnection;
import com.sun.messaging.jmq.util.admin.MessageType;
import com.sun.messaging.jmq.util.log.Logger;
import com.sun.messaging.jmq.jmsserver.Globals;
import com.sun.messaging.jmq.jmsserver.Broker;
import com.sun.messaging.jmq.jmsserver.BrokerStateHandler;
import com.sun.messaging.jmq.jmsservice.BrokerEvent;
import com.sun.messaging.jmq.jmsserver.util.BrokerException;
import com.sun.messaging.jmq.jmsserver.resources.BrokerResources;
import com.sun.messaging.jmq.jmsserver.config.*;
import com.sun.messaging.jmq.jmsserver.cluster.api.ClusterManager;
import com.sun.messaging.jmq.jmsserver.core.BrokerMQAddress;
public class ChangeClusterMasterBrokerHandler extends AdminCmdHandler
{
private static boolean DEBUG = getDEBUG();
public ChangeClusterMasterBrokerHandler(AdminDataHandler parent) {
super(parent);
}
/**
* Handle the incomming administration message.
*
* @param con The Connection the message came in on.
* @param cmd_msg The administration message
* @param cmd_props The properties from the administration message
*/
public boolean handle(IMQConnection con, Packet cmd_msg,
Hashtable cmd_props) {
int status = Status.OK;
String emsg = null;
if (DEBUG) {
logger.log(Logger.INFO, this.getClass().getName()+": "+cmd_props);
}
boolean notificationOnly = false, fromJMSRA = false;
String oldmb = (String)cmd_props.get(MessageType.JMQ_CLUSTER_OLD_MASTER_BROKER);
String newmb = (String)cmd_props.get(MessageType.JMQ_CLUSTER_NEW_MASTER_BROKER);
Object val = cmd_props.get(MessageType.JMQ_JMSRA_MANAGED_BROKER);
if (val != null && Boolean.valueOf(val.toString()).booleanValue()) {
fromJMSRA = true;
}
val = cmd_props.get(MessageType.JMQ_JMSRA_NOTIFICATION_ONLY);
if (val != null && Boolean.valueOf(val.toString()).booleanValue()
&& fromJMSRA && Globals.isJMSRAManagedBroker()) {
notificationOnly = true;
}
logger.log(logger.INFO, Globals.getBrokerResources().getKString(
BrokerResources.I_ADMIN_RECEIVED_CMD,
MessageType.getString(MessageType.CHANGE_CLUSTER_MASTER_BROKER)+
"["+MessageType.JMQ_CLUSTER_NEW_MASTER_BROKER+"="+newmb+", "+
MessageType.JMQ_CLUSTER_OLD_MASTER_BROKER+"="+oldmb+"]"+
(fromJMSRA ? "JMSRA":"")+
(notificationOnly ? "("+MessageType.JMQ_JMSRA_NOTIFICATION_ONLY+")":"")));
if (Globals.getHAEnabled()) {
status = Status.PRECONDITION_FAILED;
emsg = rb.getKString(rb.E_OP_NOT_APPLY_TO_HA_BROKER,
MessageType.getString(MessageType.CHANGE_CLUSTER_MASTER_BROKER));
logger.log(Logger.ERROR, emsg);
sendReply(status, emsg, con, cmd_msg);
return true;
}
if (Globals.useSharedConfigRecord()) {
status = Status.PRECONDITION_FAILED;
emsg = rb.getKString(rb.E_OP_NOT_APPLY_NO_MASTER_BROKER_MODE,
MessageType.getString(MessageType.CHANGE_CLUSTER_MASTER_BROKER));
logger.log(Logger.ERROR, emsg);
sendReply(status, emsg, con, cmd_msg);
return true;
}
try {
BrokerStateHandler.setExclusiveRequestLock(
ExclusiveRequest.CHANGE_MASTER_BROKER);
} catch (Throwable t) {
status = Status.PRECONDITION_FAILED;
if (t instanceof BrokerException) {
status = ((BrokerException)t).getStatusCode();
}
emsg = MessageType.getString(MessageType.CHANGE_CLUSTER_MASTER_BROKER)+": "+
Status.getString(status)+" - "+t.getMessage();
logger.log(Logger.ERROR, emsg);
status = Status.PRECONDITION_FAILED;
sendReply(status, emsg, con, cmd_msg);
return true;
}
try {
if (!Globals.dynamicChangeMasterBrokerEnabled()) {
throw new BrokerException(Globals.getBrokerResources().getKString(
BrokerResources.X_NO_SUPPORT_DYNAMIC_CHANGE_MASTER_BROKER),
Status.NOT_ALLOWED);
}
if (newmb == null) {
throw new IllegalArgumentException("null "+
MessageType.JMQ_CLUSTER_NEW_MASTER_BROKER);
}
if (!fromJMSRA && Globals.isJMSRAManagedBroker()) {
throw new IllegalAccessException(
Globals.getBrokerResources().getKString(
BrokerResources.X_ADMIN_CHANGE_MASTER_NOT_FROM_JMSRA));
}
ClusterManager cm = Globals.getClusterManager();
BrokerMQAddress self = (BrokerMQAddress)cm.getMQAddress();
BrokerMQAddress master = (cm.getMasterBroker() == null ?
null:(BrokerMQAddress)cm.getMasterBroker().getBrokerURL());
BrokerMQAddress newmba = BrokerMQAddress.createAddress(newmb);
BrokerMQAddress oldmba = null;
if (oldmb != null) {
oldmba = BrokerMQAddress.createAddress(oldmb);
}
if (notificationOnly) {
if (master == null) {
emsg = "IllegalStateException for notification "+
MessageType.getString(MessageType.CHANGE_CLUSTER_MASTER_BROKER)+
": No master broker";
logger.log(logger.ERROR, emsg);
sendReply(Status.ERROR, emsg, con, cmd_msg);
Broker.getBroker().exit(1, emsg, BrokerEvent.Type.ERROR);
throw new IllegalStateException(emsg);
}
if (newmba.equals(self)) {
if (!master.equals(self)) {
emsg = "IllegalStateException for notification "+
MessageType.getString(MessageType.CHANGE_CLUSTER_MASTER_BROKER)+
": This broker, which has master broker "+master+
", is not the master broker as expected";
logger.log(logger.ERROR, emsg);
sendReply(Status.ERROR, emsg, con, cmd_msg);
Broker.getBroker().exit(1, emsg, BrokerEvent.Type.ERROR);
return true;
}
}
if (oldmba != null && oldmba.equals(self)) {
if (!master.equals(newmba)) {
emsg = "IllegalStateException for notification "+
MessageType.getString(MessageType.CHANGE_CLUSTER_MASTER_BROKER)+
": This broker, which is the old master broker "+oldmba+
", does not have "+newmba+" as the master broker as expected";
logger.log(logger.ERROR, emsg);
sendReply(Status.ERROR, emsg, con, cmd_msg);
Broker.getBroker().exit(1, emsg, BrokerEvent.Type.ERROR);
return true;
}
}
sendReply(Status.OK, null, con, cmd_msg);
return true;
}
if (master == null) {
throw new BrokerException(Globals.getBrokerResources().getKString(
BrokerResources.X_CLUSTER_NO_MASTER_BROKER_REJECT_CHANGE_MASTER),
Status.PRECONDITION_FAILED);
}
if (newmba.equals(master)) {
logger.log(logger.INFO, Globals.getBrokerResources().getKString(
BrokerResources.I_CLUSTER_CHANGE_MASTER_BROKER_SAME, newmba));
sendReply(Status.OK, null, con, cmd_msg);
return true;
}
if (oldmba == null) {
oldmba = master;
}
if (!oldmba.equals(master)) {
throw new BrokerException(Globals.getBrokerResources().getKString(
BrokerResources.X_CLUSTER_CHANGE_MASTER_BROKER_MISMATCH,
oldmba.toString(), master), Status.PRECONDITION_FAILED);
}
if (!self.equals(master)) {
if (!Globals.isJMSRAManagedBroker()) {
throw new BrokerException(Globals.getBrokerResources().getKString(
BrokerResources.X_CLUSTER_THIS_BROKER_NOT_MASTER_BROKER_REJECT_CHANGE_MASTER,
master.toString()), Status.NOT_ALLOWED);
}
sendReply(Status.OK, null, con, cmd_msg);
return true;
}
Globals.getClusterBroadcast().changeMasterBroker(newmba, oldmba);
sendReply(Status.OK, null, con, cmd_msg);
return true;
} catch (Exception e) {
status = Status.ERROR;
emsg = e.getMessage();
if (e instanceof BrokerException) {
status = ((BrokerException)e).getStatusCode();
emsg = emsg+"["+Status.getString(status)+"]";
}
logger.logStack(Logger.ERROR, emsg, e);
sendReply(status, emsg, con, cmd_msg);
return true;
} finally {
BrokerStateHandler.unsetExclusiveRequestLock(
ExclusiveRequest.CHANGE_MASTER_BROKER);
}
}
private void sendReply(int status, String emsg, IMQConnection con, Packet cmd_msg) {
Packet reply = new Packet(con.useDirectBuffers());
reply.setPacketType(PacketType.OBJECT_MESSAGE);
setProperties(reply, MessageType.CHANGE_CLUSTER_MASTER_BROKER_REPLY, status, emsg);
parent.sendReply(con, cmd_msg, reply);
}
}
