mirror of
https://github.com/alibaba/druid.git
synced 2023-03-04 19:17:16 +00:00
619 lines
19 KiB
Java
619 lines
19 KiB
Java
package com.alibaba.druid.pool.xa;
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import java.sql.CallableStatement;
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import java.sql.Connection;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Statement;
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import java.util.ArrayList;
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import javax.transaction.xa.XAException;
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import javax.transaction.xa.XAResource;
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import javax.transaction.xa.Xid;
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import oracle.jdbc.internal.OracleConnection;
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import oracle.jdbc.xa.OracleXAException;
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import oracle.jdbc.xa.OracleXAResource;
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import oracle.jdbc.xa.OracleXid;
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import com.alibaba.druid.util.OracleUtils;
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public class DruidXAOracleResource extends DruidXAResource {
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private static String xa_start_post_816 = "begin ? := JAVA_XA.xa_start_new(?,?,?,?,?); end;";
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private static String xa_forget_post_816 = "begin ? := JAVA_XA.xa_forget_new (?,?,?); end;";
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private static String xa_prepare_post_816 = "begin ? := JAVA_XA.xa_prepare_new (?,?,?); end;";
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private static String xa_rollback_post_816 = "begin ? := JAVA_XA.xa_rollback_new (?,?,?); end;";
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private static String xa_commit_post_816 = "begin ? := JAVA_XA.xa_commit_new (?,?,?,?); end;";
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private static String xa_end_post_816 = "begin ? := JAVA_XA.xa_end_new(?,?,?,?); end;";
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private String synchronizeBeforeRecoverNewCall = "BEGIN sys.dbms_xa.dist_txn_sync \n; END;";
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private String synchronizeBeforeRecoverOldCall = "BEGIN sys.dbms_system.dist_txn_sync(0) \n; END;";
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private String recoverySqlRows = "SELECT formatid, globalid, branchid FROM SYS.DBA_PENDING_TRANSACTIONS";
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private int version;
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private boolean needStackingForCommitRollbackPrepare = false;
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boolean isTransLoose = false;
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public DruidXAOracleResource(DruidXAPooledConnection conn) throws SQLException, XAException{
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this.version = OracleUtils.getVersionNumber(conn);
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this.needStackingForCommitRollbackPrepare = (this.version < 9000);
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if (this.version < 8170) {
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throw new XAException(XAException.XAER_PROTO);
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}
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}
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@Override
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public void commit(Xid xid, boolean onePhase) throws XAException {
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synchronized (this.connection) {
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if (xid == null) {
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throw new XAException(-5);
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}
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Xid stackedXid = null;
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if (this.needStackingForCommitRollbackPrepare) {
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stackedXid = super.suspendStacked(xid);
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} else {
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removeXidFromList(xid);
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if (this.activeXid == null) {
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exitGlobalTxnMode();
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}
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}
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try {
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try {
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doCommit(xid, onePhase);
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} catch (SQLException sqle) {
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checkError(sqle, -3);
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}
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} catch (XAException xae) {
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if (xae.errorCode == -7) {
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try {
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this.connection.close();
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} catch (SQLException ea) {
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}
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} else if (this.needStackingForCommitRollbackPrepare) {
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super.resumeStacked(stackedXid);
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}
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throw xae;
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}
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if (this.needStackingForCommitRollbackPrepare) {
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super.resumeStacked(stackedXid);
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}
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}
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}
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protected void doCommit(Xid xid, boolean onePhase) throws XAException, SQLException {
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CallableStatement cstmt = null;
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try {
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cstmt = this.connection.prepareCall(xa_commit_post_816);
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cstmt.registerOutParameter(1, 2);
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cstmt.setInt(2, xid.getFormatId());
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cstmt.setBytes(3, xid.getGlobalTransactionId());
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cstmt.setBytes(4, xid.getBranchQualifier());
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cstmt.setInt(5, onePhase ? 1 : 0);
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cstmt.execute();
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int returnVal = cstmt.getInt(1);
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checkError(returnVal, -7);
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} catch (SQLException s) {
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int returnVal = s.getErrorCode();
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if (returnVal == 0) {
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throw new XAException(-6);
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}
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throw s;
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} finally {
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try {
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if (cstmt != null) cstmt.close();
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} catch (SQLException s) {
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}
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cstmt = null;
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}
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}
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@Override
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public void end(Xid xid, int flag) throws XAException {
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synchronized (this.connection) {
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int returnVal = -1;
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boolean isTMSUCCESS = false;
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boolean isTMFAIL = false;
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try {
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if (xid == null) {
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throw new XAException(-5);
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}
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int validFlags = 638582786;
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if ((flag & validFlags) != flag) {
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throw new XAException(-5);
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}
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Xid stackedXid = null;
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isTMSUCCESS = (flag & 0x4000000) != 0;
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isTMFAIL = (flag & 0x20000000) != 0;
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if ((isTMSUCCESS) || (isTMFAIL)) {
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stackedXid = super.suspendStacked(xid);
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}
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try {
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boolean isLocallySuspended = false;
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boolean i = false;
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if ((isTMSUCCESS) || (isTMFAIL)) {
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isLocallySuspended = isXidSuspended(xid);
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if (isLocallySuspended) {
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super.resumeStacked(xid);
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}
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removeXidFromList(xid);
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} else if (flag == 33554432) {
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boolean[] flags = { false };
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super.createOrUpdateXid(xid, true, flags);
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i = flags[0];
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}
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returnVal = doEnd(xid, flag, i);
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} catch (SQLException sqle) {
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checkError(sqle, -3);
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}
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if (stackedXid != null) {
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super.resumeStacked(stackedXid);
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} else if (isXidListEmpty()) {
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exitGlobalTxnMode();
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this.activeXid = null;
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}
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checkError(returnVal);
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if (((isTMSUCCESS) && (flag != 67108864)) || ((isTMFAIL) && (flag != 536870912))) {
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throw new XAException(-5);
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}
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} finally {
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restoreAutoCommitModeForGlobalTransaction();
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}
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}
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}
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protected int doEnd(Xid xid, int flag, boolean isLocallySuspended) throws XAException, SQLException {
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CallableStatement cstmt = null;
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int returnVal = -1;
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try {
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cstmt = this.connection.prepareCall(xa_end_post_816);
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cstmt.registerOutParameter(1, 2);
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cstmt.setInt(2, xid.getFormatId());
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cstmt.setBytes(3, xid.getGlobalTransactionId());
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cstmt.setBytes(4, xid.getBranchQualifier());
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cstmt.setInt(5, flag);
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cstmt.execute();
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returnVal = cstmt.getInt(1);
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} catch (SQLException s) {
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returnVal = s.getErrorCode();
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throw s;
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} finally {
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try {
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if (cstmt != null) cstmt.close();
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} catch (SQLException s) {
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}
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cstmt = null;
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}
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return returnVal;
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}
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public void forget(Xid xid) throws XAException {
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synchronized (this.connection) {
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int returnVal = 0;
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if (xid == null) {
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throw new XAException(-5);
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}
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removeXidFromList(xid);
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try {
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returnVal = doForget(xid);
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} catch (SQLException sqle) {
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checkError(sqle, -3);
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}
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checkError(returnVal);
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}
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}
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protected int doForget(Xid xid) throws XAException, SQLException {
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int returnVal = 0;
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CallableStatement cstmt = null;
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try {
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cstmt = this.connection.prepareCall(xa_forget_post_816);
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cstmt.registerOutParameter(1, 2);
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cstmt.setInt(2, xid.getFormatId());
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cstmt.setBytes(3, xid.getGlobalTransactionId());
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cstmt.setBytes(4, xid.getBranchQualifier());
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cstmt.execute();
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returnVal = cstmt.getInt(1);
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} catch (SQLException s) {
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returnVal = s.getErrorCode();
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if (returnVal == 0) {
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throw new XAException(-6);
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}
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throw s;
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} finally {
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try {
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if (cstmt != null) cstmt.close();
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} catch (SQLException s) {
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}
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cstmt = null;
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}
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return returnVal;
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}
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@Override
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public boolean isSameRM(XAResource xares) throws XAException {
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Connection conn1 = null;
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if ((xares instanceof OracleXAResource)) {
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conn1 = ((OracleXAResource) xares).getConnection();
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} else {
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return false;
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}
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try {
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if ((this.connection == null) || (((OracleConnection) this.connection).isClosed())) {
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return false;
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}
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String l_url = ((OracleConnection) this.connection).getURL();
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String l_prt = ((OracleConnection) this.connection).getProtocolType();
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if (conn1 != null) {
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return (conn1.equals(this.connection)) || (((OracleConnection) conn1).getURL().equals(l_url))
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|| ((((OracleConnection) conn1).getProtocolType().equals(l_prt)) && (l_prt.equals("kprb")));
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}
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} catch (SQLException sqe) {
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throw new XAException(-3);
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}
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return false;
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}
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@Override
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public int prepare(Xid xid) throws XAException {
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synchronized (this.connection) {
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int returnVal = 0;
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if (xid == null) {
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throw new XAException(-5);
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}
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Xid stackedXid = null;
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if (this.needStackingForCommitRollbackPrepare) {
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stackedXid = super.suspendStacked(xid);
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}
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try {
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try {
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returnVal = doPrepare(xid);
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if ((returnVal != 0) && (returnVal != 3)) {
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int x_e = OracleXAException.errorConvert(returnVal);
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if ((x_e != 0) && (x_e != 3)) {
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XAException ex = DruidXAOracleException.newXAException(getConnectionDuringExceptionHandling(),
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returnVal);
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ex.fillInStackTrace();
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throw ex;
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}
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returnVal = x_e;
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}
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} catch (SQLException sqle) {
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checkError(sqle, -3);
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}
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} catch (XAException xaex) {
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if (xaex.errorCode == -7) {
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try {
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this.connection.close();
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} catch (SQLException ea) {
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//
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}
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} else if (this.needStackingForCommitRollbackPrepare) {
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super.resumeStacked(stackedXid);
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}
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throw xaex;
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}
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if (this.needStackingForCommitRollbackPrepare) {
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super.resumeStacked(stackedXid);
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}
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return returnVal;
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}
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}
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protected int doPrepare(Xid xid) throws XAException, SQLException {
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int returnVal = 0;
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CallableStatement cstmt = null;
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try {
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cstmt = this.connection.prepareCall(xa_prepare_post_816);
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cstmt.registerOutParameter(1, 2);
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cstmt.setInt(2, xid.getFormatId());
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cstmt.setBytes(3, xid.getGlobalTransactionId());
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cstmt.setBytes(4, xid.getBranchQualifier());
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cstmt.execute();
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returnVal = cstmt.getInt(1);
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} catch (SQLException s) {
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int errorCode = s.getErrorCode();
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if (errorCode == 0) {
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throw new XAException(-6);
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}
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throw s;
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} finally {
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try {
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if (cstmt != null) cstmt.close();
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} catch (SQLException s) {
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}
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cstmt = null;
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}
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return returnVal;
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}
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protected OracleConnection getConnectionDuringExceptionHandling() {
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return (OracleConnection) this.connection;
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}
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@Override
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public Xid[] recover(int flag) throws XAException {
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synchronized (this.connection) {
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if ((flag & 0x1800000) != flag) {
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throw new XAException(-5);
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}
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if (flag == 16777216) {
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this.isTMRScanStarted = true;
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} else {
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Xid[] arrayOfXid1;
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if ((this.isTMRScanStarted) && (flag == 8388608)) {
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this.isTMRScanStarted = false;
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arrayOfXid1 = NO_XID;
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return arrayOfXid1;
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}
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if ((this.isTMRScanStarted) && (flag == 0)) {
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arrayOfXid1 = NO_XID;
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return arrayOfXid1;
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}
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}
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Statement stmt = null;
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ResultSet rset = null;
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ArrayList xidCollection = new ArrayList(50);
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try {
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stmt = this.connection.createStatement();
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try {
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stmt.execute(this.synchronizeBeforeRecoverNewCall);
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} catch (Exception exc) {
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stmt.execute(this.synchronizeBeforeRecoverOldCall);
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}
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rset = stmt.executeQuery(this.recoverySqlRows);
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while (rset.next()) {
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xidCollection.add(new OracleXid(rset.getInt(1), rset.getBytes(2), rset.getBytes(3)));
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}
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} catch (SQLException sqe) {
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throw new XAException(-3);
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} finally {
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try {
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if (stmt != null) {
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stmt.close();
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}
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if (rset != null) rset.close();
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} catch (Exception ignore) {
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}
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}
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int xidSize = xidCollection.size();
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Xid[] xids = new Xid[xidSize];
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System.arraycopy(xidCollection.toArray(), 0, xids, 0, xidSize);
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Xid[] arrayOfXid2 = xids;
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return arrayOfXid2;
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}
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}
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@Override
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public void rollback(Xid xid) throws XAException {
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synchronized (this.connection) {
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int returnVal = 0;
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if (xid == null) {
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throw new XAException(-5);
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}
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Xid stackedXid = null;
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if (this.needStackingForCommitRollbackPrepare) {
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stackedXid = super.suspendStacked(xid);
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} else {
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removeXidFromList(xid);
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if (this.activeXid == null) exitGlobalTxnMode();
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}
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try {
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doRollback(xid);
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} catch (SQLException sqle) {
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checkError(sqle, -3);
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}
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if (this.needStackingForCommitRollbackPrepare) {
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super.resumeStacked(stackedXid);
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}
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checkError(returnVal);
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}
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}
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protected void doRollback(Xid xid) throws XAException, SQLException {
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CallableStatement cstmt = null;
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try {
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cstmt = this.connection.prepareCall(xa_rollback_post_816);
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cstmt.registerOutParameter(1, 2);
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cstmt.setInt(2, xid.getFormatId());
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cstmt.setBytes(3, xid.getGlobalTransactionId());
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cstmt.setBytes(4, xid.getBranchQualifier());
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cstmt.execute();
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int returnVal = cstmt.getInt(1);
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checkError(returnVal, -7);
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} catch (SQLException s) {
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int errorCode = s.getErrorCode();
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if (errorCode == 0) {
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throw new XAException(-6);
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}
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throw s;
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} finally {
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try {
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if (cstmt != null) cstmt.close();
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} catch (SQLException s) {
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}
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cstmt = null;
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}
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}
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@Override
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public void start(Xid xid, int flag) throws XAException {
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synchronized (this.connection) {
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int returnVal = -1;
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try {
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if (xid == null) {
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throw new XAException(-5);
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}
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int isolFlag = flag & 0xFF00;
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flag &= -65281;
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int otherFlag = flag & 0x10000 | (this.isTransLoose ? 65536 : 0);
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flag &= -65537;
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if (((flag & 0x8200002) != flag) || ((otherFlag != 0) && ((otherFlag & 0x10000) != 65536))) {
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throw new XAException(-5);
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}
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if (((isolFlag & 0xFF00) != 0) && (isolFlag != 256) && (isolFlag != 512) && (isolFlag != 1024)) {
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throw new XAException(-5);
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}
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if (((flag & 0x8200000) != 0) && (((isolFlag & 0xFF00) != 0) || ((otherFlag & 0x10000) != 0))) {
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throw new XAException(-5);
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}
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flag |= isolFlag | otherFlag;
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saveAndAlterAutoCommitModeForGlobalTransaction();
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try {
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returnVal = doStart(xid, flag);
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} catch (SQLException sqle) {
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checkError(sqle, -3);
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}
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|
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checkError(returnVal);
|
|
|
|
boolean[] isLocallySuspended = { false };
|
|
createOrUpdateXid(xid, false, isLocallySuspended);
|
|
} catch (XAException ea) {
|
|
restoreAutoCommitModeForGlobalTransaction();
|
|
|
|
throw ea;
|
|
}
|
|
}
|
|
}
|
|
|
|
protected void enterGlobalTxnMode() {
|
|
((OracleConnection) this.connection).setTxnMode(1);
|
|
}
|
|
|
|
protected void exitGlobalTxnMode() {
|
|
((OracleConnection) this.connection).setTxnMode(0);
|
|
}
|
|
|
|
protected int doStart(Xid xid, int flag) throws XAException, SQLException {
|
|
|
|
int returnVal = -1;
|
|
CallableStatement cstmt = null;
|
|
try {
|
|
cstmt = this.connection.prepareCall(xa_start_post_816);
|
|
|
|
cstmt.registerOutParameter(1, 2);
|
|
cstmt.setInt(2, xid.getFormatId());
|
|
cstmt.setBytes(3, xid.getGlobalTransactionId());
|
|
cstmt.setBytes(4, xid.getBranchQualifier());
|
|
cstmt.setInt(5, this.timeout);
|
|
cstmt.setInt(6, flag);
|
|
|
|
cstmt.execute();
|
|
|
|
returnVal = cstmt.getInt(1);
|
|
} catch (SQLException s) {
|
|
returnVal = s.getErrorCode();
|
|
|
|
if (returnVal == 0) {
|
|
throw new XAException(-6);
|
|
}
|
|
|
|
throw s;
|
|
} finally {
|
|
try {
|
|
if (cstmt != null) cstmt.close();
|
|
} catch (SQLException s) {
|
|
}
|
|
cstmt = null;
|
|
}
|
|
|
|
return returnVal;
|
|
}
|
|
|
|
}
|