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/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/*
* Copyright (C) 2002,
*
* Hewlett-Packard Arjuna Labs,
* Newcastle upon Tyne,
* Tyne and Wear,
* UK.
*
* $Id: XATxConverter.java 2342 2006-03-30 13:06:17Z $
*/
package com.arjuna.ats.jta.xa;
import java.util.Arrays;
import javax.transaction.xa.Xid;
import com.arjuna.ats.arjuna.common.Uid;
import com.arjuna.ats.arjuna.coordinator.TxControl;
import com.arjuna.ats.internal.jta.resources.arjunacore.XAResourceRecordWrappingPlugin;
import com.arjuna.ats.internal.jta.xa.XID;
import com.arjuna.ats.jta.common.jtaPropertyManager;
/**
* @author Mark Little ([email protected])
* @version $Id: XATxConverter.java 2342 2006-03-30 13:06:17Z $
* @since JTS 1.0.
*/
public class XATxConverter
{
private static XAResourceRecordWrappingPlugin xaResourceRecordWrappingPlugin;
public static final int FORMAT_ID = 131077; // different from JTS ones.
static {
xaResourceRecordWrappingPlugin = jtaPropertyManager.getJTAEnvironmentBean().getXAResourceRecordWrappingPlugin();
}
static XID getXid (Uid uid, boolean branch, Integer eisName) throws IllegalStateException
{
if (branch)
return getXid(uid, new Uid(), FORMAT_ID, eisName);
else
return getXid(uid, Uid.nullUid(), FORMAT_ID, eisName);
}
public static Xid getXid (Uid uid, boolean branch, int formatId) throws IllegalStateException
{
XID xid;
if (branch)
xid = getXid(uid, new Uid(), formatId, null);
else
xid = getXid(uid, Uid.nullUid(), formatId, null);
return new XidImple(xid);
}
private static XID getXid(Uid uid, Uid branch, int formatId, Integer eisName) throws IllegalStateException
{
if (uid == null) {
throw new IllegalStateException();
}
XID xid = new XID();
xid.formatID = formatId;
// gtrid is uid byte form followed by as many chars of the node name as will fit.
byte[] gtridUid = uid.getBytes();
if (gtridUid.length > XID.MAXGTRIDSIZE) {
throw new IllegalStateException(); // Uid is too long!!!!
}
String nodeName = TxControl.getXANodeName();
int nodeNameLengthToUse = nodeName.getBytes().length;
xid.gtrid_length = gtridUid.length+nodeNameLengthToUse;
// src, srcPos, dest, destPos, length
System.arraycopy(gtridUid, 0, xid.data, 0, gtridUid.length);
System.arraycopy(nodeName.getBytes(), 0, xid.data, gtridUid.length, nodeNameLengthToUse);
if (branch.notEquals(Uid.nullUid()))
{
// bqual is uid byte form plus EIS name.
byte[] bqualUid = branch.getBytes();
if (bqualUid.length > XID.MAXBQUALSIZE) {
throw new IllegalStateException(); // Uid is too long!!!!
}
int spareBqualBytes = XID.MAXBQUALSIZE - (bqualUid.length + 4);
xid.bqual_length = bqualUid.length+4+4;
// src, srcPos, dest, destPos, length
int offset = xid.gtrid_length;
System.arraycopy (bqualUid, 0, xid.data, offset, bqualUid.length);
setEisName(xid, eisName);
}
else
{
/*
* Note: for some dbs we seem to be able to get
* away with setting the size field to the size
* of the actual branch. However, for Oracle,
* it appears as though it must always be 64.
* (At least for zero branches.)
*/
xid.data[xid.gtrid_length] = (byte) 0;
xid.bqual_length = 64;
}
return xid;
}
public static Uid getUid(XID xid)
{
if (xid == null || xid.formatID != FORMAT_ID) {
return Uid.nullUid();
}
// The Uid byte are the first in the data array, so we just pass
// in the whole thing and the additional trailing data is ignored.
Uid tx = new Uid(xid.data);
return tx;
}
public static String getNodeName(XID xid) {
// Arjuna.XID()
// don't check the formatId - it may differ e.g. JTA vs. JTS.
if (xid.formatID != FORMAT_ID && xid.formatID != 131072
&& xid.formatID != 131080) {
return null;
}
// the node name follows the Uid with no separator, so the only
// way to tell where it starts is to figure out how long the Uid is.
int offset = Uid.UID_SIZE;
return new String(Arrays.copyOfRange(xid.data, offset, xid.gtrid_length));
}
public static void setSubordinateNodeName(XID theXid, String xaNodeName) {
if (theXid == null || theXid.formatID != FORMAT_ID) {
return;
}
int length = 0;
if (xaNodeName != null) {
length = xaNodeName.length();
}
int offset = theXid.gtrid_length + Uid.UID_SIZE + 4;
theXid.data[offset++] = (byte) (length >>> 24);
theXid.data[offset++] = (byte) (length >>> 16);
theXid.data[offset++] = (byte) (length >>> 8);
theXid.data[offset++] = (byte) (length >>> 0);
if (length > 0) {
byte[] nameAsBytes = xaNodeName.getBytes();
System.arraycopy(nameAsBytes, 0, theXid.data, offset, length);
}
for (int i = offset+length; i < theXid.bqual_length; i++) {
theXid.data[i] = 0;
}
}
public static String getSubordinateNodeName(XID xid) {
// Arjuna.XID()
// don't check the formatId - it may differ e.g. JTA vs. JTS.
if (xid.formatID != FORMAT_ID) {
return null;
}
// the node name follows the Uid with no separator, so the only
// way to tell where it starts is to figure out how long the Uid is.
int offset = xid.gtrid_length + Uid.UID_SIZE + 4;
int length = (xid.data[offset++] << 24)
+ ((xid.data[offset++] & 0xFF) << 16)
+ ((xid.data[offset++] & 0xFF) << 8)
+ (xid.data[offset++] & 0xFF);
if (length > 0) {
return new String(Arrays.copyOfRange(xid.data, offset, offset+length));
} else {
return null;
}
}
public static void setBranchUID(XID xid, Uid uid) {
if (xid == null || xid.formatID != FORMAT_ID) {
return;
}
byte[] bqual = uid.getBytes();
System.arraycopy(bqual, 0, xid.data, xid.gtrid_length, Uid.UID_SIZE);
}
public static Uid getBranchUid(XID xid)
{
if (xid == null || xid.formatID != FORMAT_ID) {
return Uid.nullUid();
}
byte[] bqual = new byte[xid.bqual_length];
System.arraycopy(xid.data, xid.gtrid_length, bqual, 0, xid.bqual_length);
// The Uid byte are the first in the data array, so we just pass
// in the whole thing and the additional trailing data is ignored.
Uid tx = new Uid(bqual);
return tx;
}
public static void setEisName(XID theXid, Integer eisName) {
if (theXid == null || theXid.formatID != FORMAT_ID) {
return;
}
if (eisName == null) {
eisName = 0;
}
int offset = theXid.gtrid_length + Uid.UID_SIZE;
theXid.data[offset + 0] = (byte) (eisName >>> 24);
theXid.data[offset + 1] = (byte) (eisName >>> 16);
theXid.data[offset + 2] = (byte) (eisName >>> 8);
theXid.data[offset + 3] = (byte) (eisName >>> 0);
}
public static Integer getEISName(XID xid)
{
if(xid == null || xid.formatID != FORMAT_ID) {
return -1;
}
// the node name follows the Uid with no separator, so the only
// way to tell where it starts is to figure out how long the Uid is.
int offset = xid.gtrid_length + Uid.UID_SIZE;
return (xid.data[offset + 0] << 24)
+ ((xid.data[offset + 1] & 0xFF) << 16)
+ ((xid.data[offset + 2] & 0xFF) << 8)
+ (xid.data[offset + 3] & 0xFF);
}
public static String getXIDString(XID xid)
{
// companion method to XID.toString - try to keep them in sync.
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("< formatId=");
stringBuilder.append(xid.formatID);
stringBuilder.append(", gtrid_length=");
stringBuilder.append(xid.gtrid_length);
stringBuilder.append(", bqual_length=");
stringBuilder.append(xid.bqual_length);
stringBuilder.append(", tx_uid=");
stringBuilder.append(getUid(xid).stringForm());
stringBuilder.append(", node_name=");
stringBuilder.append(getNodeName(xid));
stringBuilder.append(", branch_uid=");
stringBuilder.append(getBranchUid(xid));;
stringBuilder.append(", subordinatenodename=");
stringBuilder.append(getSubordinateNodeName(xid));
stringBuilder.append(", eis_name=");
if (xaResourceRecordWrappingPlugin != null) {
stringBuilder.append(xaResourceRecordWrappingPlugin.getEISName(getEISName(xid)));
} else {
stringBuilder.append(getEISName(xid));
}
stringBuilder.append(" >");
return stringBuilder.toString();
}
}
