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package org.postgresql.test.xa;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Arrays;
import java.util.Random;
import javax.sql.XAConnection;
import javax.sql.XADataSource;
import javax.transaction.xa.XAException;
import javax.transaction.xa.XAResource;
import javax.transaction.xa.Xid;
import org.postgresql.test.TestUtil;
import org.postgresql.xa.PGXADataSource;
import junit.framework.TestCase;
public class XADataSourceTest extends TestCase {
private XADataSource _ds;
private Connection _conn;
private XAConnection xaconn;
private XAResource xaRes;
private Connection conn;
public XADataSourceTest(String name) {
super(name);
_ds = new PGXADataSource();
((PGXADataSource)_ds).setServerName(TestUtil.getServer());
((PGXADataSource)_ds).setPortNumber(TestUtil.getPort());
((PGXADataSource)_ds).setUser(TestUtil.getUser());
((PGXADataSource)_ds).setPassword(TestUtil.getPassword());
((PGXADataSource)_ds).setDatabaseName(TestUtil.getDatabase());
((PGXADataSource)_ds).setPrepareThreshold(TestUtil.getPrepareThreshold());
}
protected void setUp() throws Exception {
_conn = TestUtil.openDB();
TestUtil.createTable(_conn, "testxa1", "foo int");
clearAllPrepared();
xaconn = _ds.getXAConnection();
xaRes = xaconn.getXAResource();
conn = xaconn.getConnection();
}
protected void tearDown() throws SQLException {
xaconn.close();
clearAllPrepared();
TestUtil.dropTable(_conn, "testxa1");
TestUtil.closeDB(_conn);
}
private void clearAllPrepared() throws SQLException
{
Statement st = _conn.createStatement();
try
{
ResultSet rs = st.executeQuery("SELECT gid FROM pg_prepared_xacts");
Statement st2 = _conn.createStatement();
while (rs.next())
{
st2.executeUpdate("ROLLBACK PREPARED '" + rs.getString(1) + "'");
}
st2.close();
}
finally
{
st.close();
}
}
static class CustomXid implements Xid {
private static Random rand = new Random(System.currentTimeMillis());
byte[] gtrid = new byte[Xid.MAXGTRIDSIZE];
byte[] bqual = new byte[Xid.MAXBQUALSIZE];
CustomXid(int i)
{
rand.nextBytes(gtrid);
gtrid[0] = (byte)i;
gtrid[1] = (byte)i;
gtrid[2] = (byte)i;
gtrid[3] = (byte)i;
gtrid[4] = (byte)i;
bqual[0] = 4;
bqual[1] = 5;
bqual[2] = 6;
}
public int getFormatId() {
return 0;
}
public byte[] getGlobalTransactionId() {
return gtrid;
}
public byte[] getBranchQualifier() {
return bqual;
}
public boolean equals(Object o) {
Xid other = (Xid)o;
if (other.getFormatId() != this.getFormatId())
return false;
if (!Arrays.equals(other.getBranchQualifier(), this.getBranchQualifier()))
return false;
if (!Arrays.equals(other.getGlobalTransactionId(), this.getGlobalTransactionId()))
return false;
return true;
}
}
public void testOnePhase() throws Exception {
Xid xid = new CustomXid(1);
xaRes.start(xid, XAResource.TMNOFLAGS);
conn.createStatement().executeQuery("SELECT * FROM testxa1");
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.commit(xid, true);
}
public void testTwoPhaseCommit() throws Exception {
Xid xid = new CustomXid(1);
xaRes.start(xid, XAResource.TMNOFLAGS);
conn.createStatement().executeQuery("SELECT * FROM testxa1");
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.prepare(xid);
xaRes.commit(xid, false);
}
public void testCloseBeforeCommit() throws Exception {
Xid xid = new CustomXid(5);
xaRes.start(xid, XAResource.TMNOFLAGS);
assertEquals(1, conn.createStatement().executeUpdate("INSERT INTO testxa1 VALUES (1)"));
conn.close();
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.commit(xid, true);
ResultSet rs = _conn.createStatement().executeQuery("SELECT foo FROM testxa1");
assertTrue(rs.next());
assertEquals(1, rs.getInt(1));
}
public void testRecover() throws Exception {
Xid xid = new CustomXid(12345);
xaRes.start(xid, XAResource.TMNOFLAGS);
conn.createStatement().executeQuery("SELECT * FROM testxa1");
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.prepare(xid);
{
Xid[] recoveredXidArray = xaRes.recover(XAResource.TMSTARTRSCAN);
boolean recoveredXid = false;
for (int i = 0; i < recoveredXidArray.length; i++)
{
if (xid.equals(recoveredXidArray[i]))
{
recoveredXid = true;
break;
}
}
assertTrue("Did not recover prepared xid", recoveredXid);
assertEquals(0, xaRes.recover(XAResource.TMNOFLAGS).length);
}
xaRes.rollback(xid);
{
Xid[] recoveredXidArray = xaRes.recover(XAResource.TMSTARTRSCAN);
boolean recoveredXid = false;
for (int c = 0; c < recoveredXidArray.length; c++)
{
if (xaRes.equals(recoveredXidArray[c]))
{
recoveredXid = true;
break;
}
}
assertFalse("Recovered rolled back xid", recoveredXid);
}
}
public void testRollback() throws XAException {
Xid xid = new CustomXid(3);
xaRes.start(xid, XAResource.TMNOFLAGS);
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.prepare(xid);
xaRes.rollback(xid);
}
public void testRollbackWithoutPrepare() throws XAException {
Xid xid = new CustomXid(4);
xaRes.start(xid, XAResource.TMNOFLAGS);
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.rollback(xid);
}
public void testAutoCommit() throws Exception {
Xid xid = new CustomXid(6);
// When not in an XA transaction, autocommit should be true
// per normal JDBC rules.
assertTrue(conn.getAutoCommit());
// When in an XA transaction, autocommit should be false
xaRes.start(xid, XAResource.TMNOFLAGS);
assertFalse(conn.getAutoCommit());
xaRes.end(xid, XAResource.TMSUCCESS);
assertFalse(conn.getAutoCommit());
xaRes.commit(xid, true);
assertTrue(conn.getAutoCommit());
xaRes.start(xid, XAResource.TMNOFLAGS);
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.prepare(xid);
assertTrue(conn.getAutoCommit());
xaRes.commit(xid, false);
assertTrue(conn.getAutoCommit());
// Check that autocommit is reset to true after a 1-phase rollback
xaRes.start(xid, XAResource.TMNOFLAGS);
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.rollback(xid);
assertTrue(conn.getAutoCommit());
// Check that autocommit is reset to true after a 2-phase rollback
xaRes.start(xid, XAResource.TMNOFLAGS);
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.prepare(xid);
xaRes.rollback(xid);
assertTrue(conn.getAutoCommit());
// Check that autoCommit is set correctly after a getConnection-call
conn = xaconn.getConnection();
assertTrue(conn.getAutoCommit());
xaRes.start(xid, XAResource.TMNOFLAGS);
conn.createStatement().executeQuery("SELECT * FROM testxa1");
java.sql.Timestamp ts1 = getTransactionTimestamp(conn);
conn.close();
conn = xaconn.getConnection();
assertFalse(conn.getAutoCommit());
java.sql.Timestamp ts2 = getTransactionTimestamp(conn);
/* Check that we're still in the same transaction.
* close+getConnection() should not rollback the XA-transaction
* implicitly.
*/
assertEquals(ts1, ts2);
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.prepare(xid);
xaRes.rollback(xid);
assertTrue(conn.getAutoCommit());
}
/**
* Get the time the current transaction was started from the server.
*
* This can be used to check that transaction doesn't get committed/
* rolled back inadvertently, by calling this once before and after the
* suspected piece of code, and check that they match. It's a bit iffy,
* conceivably you might get the same timestamp anyway if the
* suspected piece of code runs fast enough, and/or the server clock
* is very coarse grained. But it'll do for testing purposes.
*/
private static java.sql.Timestamp getTransactionTimestamp(Connection conn) throws SQLException
{
ResultSet rs = conn.createStatement().executeQuery("SELECT now()");
rs.next();
return rs.getTimestamp(1);
}
public void testEndThenJoin() throws XAException {
Xid xid = new CustomXid(5);
xaRes.start(xid, XAResource.TMNOFLAGS);
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.start(xid, XAResource.TMJOIN);
xaRes.end(xid, XAResource.TMSUCCESS);
xaRes.commit(xid, true);
}
/* We don't support transaction interleaving.
public void testInterleaving1() throws Exception {
Xid xid1 = new CustomXid(1);
Xid xid2 = new CustomXid(2);
xaRes.start(xid1, XAResource.TMNOFLAGS);
conn.createStatement().executeUpdate("UPDATE testxa1 SET foo = 'ccc'");
xaRes.end(xid1, XAResource.TMSUCCESS);
xaRes.start(xid2, XAResource.TMNOFLAGS);
conn.createStatement().executeUpdate("UPDATE testxa2 SET foo = 'bbb'");
xaRes.commit(xid1, true);
xaRes.end(xid2, XAResource.TMSUCCESS);
xaRes.commit(xid2, true);
}
public void testInterleaving2() throws Exception {
Xid xid1 = new CustomXid(1);
Xid xid2 = new CustomXid(2);
Xid xid3 = new CustomXid(3);
xaRes.start(xid1, XAResource.TMNOFLAGS);
conn.createStatement().executeUpdate("UPDATE testxa1 SET foo = 'aa'");
xaRes.end(xid1, XAResource.TMSUCCESS);
xaRes.start(xid2, XAResource.TMNOFLAGS);
conn.createStatement().executeUpdate("UPDATE testxa2 SET foo = 'bb'");
xaRes.end(xid2, XAResource.TMSUCCESS);
xaRes.start(xid3, XAResource.TMNOFLAGS);
conn.createStatement().executeUpdate("UPDATE testxa3 SET foo = 'cc'");
xaRes.end(xid3, XAResource.TMSUCCESS);
xaRes.commit(xid1, true);
xaRes.commit(xid2, true);
xaRes.commit(xid3, true);
}
*/
}
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