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package com.sun.xml.ws.tx.at.runtime;
import com.sun.xml.ws.tx.at.WSATHelper;
import com.sun.xml.ws.tx.at.internal.XidImpl;
import java.security.NoSuchAlgorithmException;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.StringTokenizer;
import javax.transaction.xa.Xid;
/**
*
* @author paulparkinson
*/
class TransactionIdHelperImpl extends TransactionIdHelper {
private static final int FFID = 0xFF1D;
// private final DebugLogger debugWSAT = DebugLogger.getDebugLogger("DebugWSAT");
private Map<String, Xid> tids2xids;
private Map<Xid, String> xids2tids;
public TransactionIdHelperImpl() throws NoSuchAlgorithmException {
tids2xids = new HashMap<String, Xid>();
xids2tids = new HashMap<Xid, String>();
}
public String xid2wsatid(Xid xid) {
return xidToString(xid, true);
// return xid.toString();
}
//XAResourceHelper.xidToString(Xid xid, true)
static String xidToString(Xid xid, boolean includeBranchQualifier) {
if (xid == null) return "";
StringBuffer sb = new StringBuffer()
.append(Integer.toHexString(xid.getFormatId()).toUpperCase(Locale.ENGLISH)).append("-")
.append(byteArrayToString(xid.getGlobalTransactionId()));
if (includeBranchQualifier) {
String bqual = byteArrayToString(xid.getBranchQualifier());
if (!bqual.equals("")) {
sb.append("-").append(byteArrayToString(xid.getBranchQualifier()));
}
}
return sb.toString();
}
private static final char DIGITS[] = {
'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
private static String byteArrayToString(byte[] barray) {
if (barray == null) return "";
char[] res = new char[barray.length * 2]; // Two chars per byte
int j = 0;
for( int i = 0; i < barray.length; i++) {
res[j++] = DIGITS[(barray[i] & 0xF0) >>> 4];
res[j++] = DIGITS[barray[i] & 0x0F];
}
return new String(res);
}
public Xid wsatid2xid(String wsatid) {
return create(wsatid);
}
public static XidImpl create(String xid) {
StringTokenizer tok = new StringTokenizer(xid, "-");
if (tok.countTokens() < 2) return null;
String formatIdString = tok.nextToken();
String gtridString = tok.nextToken();
String bqualString = null;
if (tok.hasMoreElements()) {
bqualString = tok.nextToken();
}
return new XidImpl(Integer.parseInt(formatIdString, 16),
stringToByteArray(gtridString),
(bqualString != null) ? stringToByteArray(bqualString) : new byte[]{});
}
static private byte[] stringToByteArray(String str) {
if (str == null) return new byte[0];
byte[] bytes = new byte[str.length()/2];
for (int i = 0, j = 0; i < str.length(); i++, j++) {
bytes[j] = (byte) ((Byte.parseByte(str.substring(i,++i), 16) << 4) |
Byte.parseByte(str.substring(i,i+1), 16));
}
return bytes;
}
public synchronized Xid getOrCreateXid(byte[] tid) {
Xid xid = getXid(tid);
if (xid != null) return xid;
byte[] gtrid = WSATHelper.assignUUID().getBytes();
// xid = XIDFactory.createXID(FFID, gtrid, null);
xid = new XidImpl(FFID, gtrid, null);
String stid = new String(tid);
tids2xids.put(stid, xid);
xids2tids.put(xid, stid);
// if (debugWSAT.isDebugEnabled()) {
// debugWSAT.debug("created mapping foreign Transaction Id " + stid + " to local Xid " + xid);
// }
return xid;
}
public synchronized byte[] getTid(Xid xid) {
String stid = xids2tids.get(xid);
if (stid == null) return null;
return stid.getBytes();
}
public synchronized Xid getXid(byte[] tid) {
return tids2xids.get(new String(tid));
}
public synchronized Xid remove(byte[] tid) {
if (getXid(tid) == null)
return null;
Xid xid = tids2xids.remove(tid);
xids2tids.remove(xid);
return xid;
}
public synchronized byte[] remove(Xid xid) {
if (getTid(xid) == null)
return null;
String stid = xids2tids.remove(xid);
tids2xids.remove(stid);
return stid.getBytes();
}
public String toString() {
return tids2xids.toString();
}
}