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/*
* @(#)RollbackCommitHandler.java 1.13 07/12/07
*/
package com.sun.messaging.jmq.jmsserver.data.handlers.admin;
import java.util.Hashtable;
import java.io.IOException;
import java.io.*;
import java.util.Vector;
import java.util.List;
import java.util.Iterator;
import javax.transaction.xa.XAResource;
import com.sun.messaging.jmq.io.Packet;
import com.sun.messaging.jmq.jmsserver.service.HAMonitorService;
import com.sun.messaging.jmq.jmsserver.service.imq.IMQConnection;
import com.sun.messaging.jmq.io.*;
import com.sun.messaging.jmq.jmsserver.data.TransactionUID;
import com.sun.messaging.jmq.jmsserver.data.TransactionState;
import com.sun.messaging.jmq.jmsserver.data.TransactionList;
import com.sun.messaging.jmq.jmsserver.data.RollbackReason;
import com.sun.messaging.jmq.jmsserver.data.handlers.TransactionHandler;
import com.sun.messaging.jmq.util.admin.MessageType;
import com.sun.messaging.jmq.util.admin.ServiceInfo;
import com.sun.messaging.jmq.util.log.Logger;
import com.sun.messaging.jmq.util.JMQXid;
import com.sun.messaging.jmq.jmsserver.util.BrokerException;
import com.sun.messaging.jmq.jmsserver.Globals;
public class RollbackCommitHandler extends AdminCmdHandler
{
private static boolean DEBUG = getDEBUG();
TransactionList tl = null;
public RollbackCommitHandler(AdminDataHandler parent) {
super(parent);
tl = parent.tl;
}
/**
* 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) {
if ( DEBUG ) {
logger.log(Logger.DEBUG, this.getClass().getName() + ": " +
"Rollback/Commit transaction " + cmd_props);
}
// Get the admin request message type
int requestType =
((Integer)cmd_props.get(MessageType.JMQ_MESSAGE_TYPE)).intValue();
int status = Status.OK;
String errMsg = null;
TransactionUID tid = null;
TransactionState ts = null;
TransactionHandler thandler = null;
// Get the packet handler that handles transaction packets
if (parent.adminPktRtr != null) {
thandler = (TransactionHandler)
parent.adminPktRtr.getHandler(PacketType.ROLLBACK_TRANSACTION);
}
Long id = (Long)cmd_props.get(MessageType.JMQ_TRANSACTION_ID);
HAMonitorService hamonitor = Globals.getHAMonitorService();
if (hamonitor != null && hamonitor.inTakeover()) {
status = Status.ERROR;
errMsg = rb.getString(rb.E_CANNOT_PROCEED_TAKEOVER_IN_PROCESS);
logger.log(Logger.ERROR, this.getClass().getName() + ": " + errMsg);
}
if (id != null) {
tid = new TransactionUID(id.longValue());
} else {
status = Status.BAD_REQUEST;
}
if (status == Status.OK) {
ts = tl.retrieveState(tid);
if (ts == null) {
// Specified transaction did not exist
status = Status.NOT_FOUND;
errMsg = rb.getString(rb.E_NO_SUCH_TRANSACTION, tid);
} else if (requestType == MessageType.COMMIT_TRANSACTION &&
ts.getState() != TransactionState.PREPARED) {
status = Status.PRECONDITION_FAILED;
errMsg = rb.getString(rb.E_TRANSACTION_NOT_PREPARED, tid);
} else if (requestType == MessageType.ROLLBACK_TRANSACTION &&
(ts.getState() < TransactionState.STARTED ||
ts.getState() > TransactionState.PREPARED)) {
status = Status.PRECONDITION_FAILED;
errMsg = rb.getString(rb.E_INVALID_TXN_STATE_FOR_ROLLBACK, tid);
} else {
JMQXid xid = tl.UIDToXid(tid);
if (xid == null &&
(!(Globals.getHAEnabled() &&
ts.getState() == TransactionState.PREPARED))) {
/*
* Need to pick the right error message:
* If (action is ROLLBACK and state is one of {STARTED, FAILED,
* INCOMPLETE, COMPLETE})
* "Rollback of non-XA transaction 123456789 in non-PREPARED state
* is not supported."
* else
* "Could not find Xid for 123456789"
*/
if (requestType == MessageType.ROLLBACK_TRANSACTION &&
(ts.getState() >= TransactionState.STARTED &&
ts.getState() < TransactionState.PREPARED)) {
errMsg = rb.getString(rb.E_INTERNAL_BROKER_ERROR,
"Rollback of non-XA transaction "
+ tid
+ " in non-PREPARED state is not supported.") ;
} else {
errMsg = rb.getString(rb.E_INTERNAL_BROKER_ERROR,
"Could not find Xid for " + tid) ;
}
status = Status.ERROR;
} else if (thandler == null) {
errMsg = rb.getString(rb.E_INTERNAL_BROKER_ERROR,
"Could not locate TransactionHandler") ;
status = Status.ERROR;
} else {
if (requestType == MessageType.ROLLBACK_TRANSACTION) {
if ( DEBUG ) {
logger.log(Logger.DEBUG,
"Rolling back " + tid + " in state " + ts);
}
try {
thandler.doRollback(tid, xid, null, ts, null,
con, RollbackReason.ADMIN);
} catch (BrokerException e) {
status = Status.ERROR;
errMsg = e.getMessage();
}
} else if (requestType == MessageType.COMMIT_TRANSACTION) {
if ( DEBUG ) {
logger.log(Logger.DEBUG,
"Committing " + tid + " in state " + ts);
}
try {
thandler.doCommit(tid, xid,
new Integer(XAResource.TMNOFLAGS), ts, null,
false, con, null);
} catch (BrokerException e) {
status = Status.ERROR;
errMsg = e.getMessage();
}
} else {
// Should never happen.
return super.handle(con, cmd_msg, cmd_props);
}
}
}
}
sendReply(con, cmd_msg, requestType + 1, status, errMsg);
return true;
}
private void sendReply(IMQConnection con, Packet cmd_msg,
int replyType, int status, String errMsg) {
// Send reply
Packet reply = new Packet(con.useDirectBuffers());
reply.setPacketType(PacketType.OBJECT_MESSAGE);
setProperties(reply, replyType, status, errMsg);
parent.sendReply(con, cmd_msg, reply);
}
}