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package com.sun.messaging.bridge.service.jms.tx.log;
import java.util.Properties;
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.logging.Logger;
import java.util.logging.Level;
import java.io.ObjectInputStream;
import java.io.ByteArrayInputStream;
import com.sun.messaging.bridge.service.jms.tx.GlobalXid;
import com.sun.messaging.bridge.service.jms.tx.BranchXid;
import com.sun.messaging.bridge.service.JMSBridgeStore;
import com.sun.messaging.bridge.service.UpdateOpaqueDataCallback;
import com.sun.messaging.bridge.service.jms.JMSBridge;
import com.sun.messaging.bridge.service.jms.resources.JMSBridgeResources;
/**
*
* @author amyk
*/
public class JDBCTxLogImpl extends TxLog {
private static final String _type = TxLog.JDBCTYPE;
private JMSBridgeStore _store = null;
private boolean _inited = false;
private boolean _closed = false;
private static JMSBridgeResources _jbr = JMSBridge.getJMSBridgeResources();
public void setJDBCStore(JMSBridgeStore store)
throws IllegalArgumentException {
if (store == null) {
throw new IllegalArgumentException("null JDBC store");
}
_store = store;
}
public String getType() {
return _type;
}
/**
* @param props The properties is guaranteed to contain
* "txlogDir", "txlogSuffix",
* "txlogMaxBranches", "jmsbridge"
* @param reset true to reset the txlog
*/
public void init(Properties props, boolean reset) throws Exception {
if (_store == null) {
throw new IllegalStateException("JDBC store is null");
}
if (_logger == null) {
throw new IllegalArgumentException("logger not set");
}
_jmsbridge = props.getProperty("jmsbridge");
if (_jmsbridge == null) {
throw new IllegalArgumentException("Property 'jmsbridge' not set");
}
_tmname = props.getProperty("tmname");
if (_tmname == null) {
throw new IllegalStateException("Property 'tmname' not set");
}
super.init(props, reset);
_inited = true;
}
/**
* @param lr the LogRecord to log
*/
public void logGlobalDecision(LogRecord lr) throws Exception {
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "jdbcTxLog: log global decision "+lr);
}
super.checkClosedAndSetInProgress();
try {
_store.storeTMLogRecord(lr.getGlobalXid().toString(),
lr.toBytes(), _jmsbridge, false, _logger);
} finally {
super.setInProgress(false);
}
}
/**
* @param bxid the branch xid to update
* @param lr the LogRecord to identify the record to update
*/
public void logHeuristicBranch(BranchXid bxid, LogRecord lr) throws Exception {
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "jdbcTxLog: log branch heuristic decision "+lr);
}
final GlobalXid gxid = lr.getGlobalXid();
final BranchXid branchXid = bxid;
final LogRecord newlr = lr;
super.checkClosedAndSetInProgress();
try {
UpdateOpaqueDataCallback callback = new UpdateOpaqueDataCallback() {
public Object update(Object currlr) throws Exception {
ObjectInputStream ois = new ObjectInputStream(
new ByteArrayInputStream((byte[])currlr));
LogRecord oldlr = (LogRecord)ois.readObject();
if (!oldlr.getGlobalXid().equals(gxid)) {
throw new IllegalArgumentException(
"Unexpected global xid "+oldlr.getGlobalXid()+" from store, expected:"+gxid);
}
ois.close();
if (oldlr == null) {
throw new IllegalArgumentException(
"Unexpected null current log record for "+gxid);
}
if (oldlr.getBranchDecision(branchXid) ==
newlr.getBranchDecision(branchXid)) {
return currlr;
}
oldlr.setBranchDecision(branchXid, newlr.getBranchDecision(branchXid));
return oldlr;
}
};
_store.updateTMLogRecord(gxid.toString(), lr.toBytes(), _jmsbridge,
callback, true, true, _logger);
} finally {
super.setInProgress(false);
}
}
/**
* @param gxid the global xid record to remove
*/
public void reap(String gxid) throws Exception {
String key = gxid;
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "jdbcTxLog: remove global transaction xid "+key);
}
super.checkClosedAndSetInProgress();
try {
_store.removeTMLogRecord(key, _jmsbridge, true, _logger);
} finally {
super.setInProgress(false);
}
}
/**
*
* @param gxid the GlobalXid
* @return a copy of LogRecord corresponding gxid or null if not exist
*/
public LogRecord getLogRecord(GlobalXid gxid) throws Exception {
String key = gxid.toString();
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "jdbcTxLog: get log record for xid "+key);
}
super.checkClosedAndSetInProgress();
try {
byte[] data = _store.getTMLogRecord(key, _jmsbridge, _logger);
if (data == null) return null;
ObjectInputStream ois = new ObjectInputStream(
new ByteArrayInputStream(data));
LogRecord lr = (LogRecord)ois.readObject();
ois.close();
return lr;
} finally {
super.setInProgress(false);
}
}
public List getAllLogRecords() throws Exception {
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "jdbcTxLog: get all log records");
}
ArrayList<LogRecord> list = new ArrayList<LogRecord>();
super.checkClosedAndSetInProgress();
try {
List abytes = _store.getTMLogRecordsByName(_jmsbridge, _logger);
if (abytes == null) return list;
byte[] data = null;
Iterator<byte[]> itr = abytes.iterator();
while (itr.hasNext()) {
data = itr.next();
ObjectInputStream ois = new ObjectInputStream(
new ByteArrayInputStream(data));
LogRecord lr = (LogRecord)ois.readObject();
ois.close();
list.add(lr);
}
return list;
} finally {
super.setInProgress(false);
}
}
/**
*/
public void close() throws Exception {
_logger.log(Level.INFO, _jbr.getString(_jbr.I_JDBCTXNLOG_CLOSE));
super.setClosedAndWait();
super.close();
}
}