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ActiveMQ example source code file (LocalTransaction.java)

This example ActiveMQ source code file (LocalTransaction.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

commit, commit, failed, failed, io, ioexception, localtransaction, logger, override, override, post, throwable, transaction, xaexception, xaexception

The ActiveMQ LocalTransaction.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.activemq.transaction;

import java.io.IOException;
import javax.transaction.xa.XAException;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.command.LocalTransactionId;
import org.apache.activemq.command.TransactionId;
import org.apache.activemq.store.TransactionStore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 
 */
public class LocalTransaction extends Transaction {

    private static final Logger LOG = LoggerFactory.getLogger(LocalTransaction.class);

    private final TransactionStore transactionStore;
    private final LocalTransactionId xid;
    private final ConnectionContext context;

    public LocalTransaction(TransactionStore transactionStore, LocalTransactionId xid, ConnectionContext context) {
        this.transactionStore = transactionStore;
        this.xid = xid;
        this.context = context;
    }

    @Override
    public void commit(boolean onePhase) throws XAException, IOException {
        if (LOG.isDebugEnabled()) {
            LOG.debug("commit: "  + xid
                    + " syncCount: " + size());
        }
        
        // Get ready for commit.
        try {
            prePrepare();
        } catch (XAException e) {
            throw e;
        } catch (Throwable e) {
            LOG.warn("COMMIT FAILED: ", e);
            rollback();
            // Let them know we rolled back.
            XAException xae = new XAException("COMMIT FAILED: Transaction rolled back.");
            xae.errorCode = XAException.XA_RBOTHER;
            xae.initCause(e);
            throw xae;
        }

        setState(Transaction.FINISHED_STATE);
        context.getTransactions().remove(xid);
        // Sync on transaction store to avoid out of order messages in the cursor
        // https://issues.apache.org/activemq/browse/AMQ-2594
        try {
            transactionStore.commit(getTransactionId(), false,preCommitTask, postCommitTask);
            this.waitPostCommitDone(postCommitTask);
        } catch (Throwable t) {
            LOG.warn("Store COMMIT FAILED: ", t);
            rollback();
            XAException xae = new XAException("STORE COMMIT FAILED: Transaction rolled back.");
            xae.errorCode = XAException.XA_RBOTHER;
            xae.initCause(t);
            throw xae;
        }
    }

    @Override
    public void rollback() throws XAException, IOException {

        if (LOG.isDebugEnabled()) {
            LOG.debug("rollback: "  + xid
                    + " syncCount: " + size());
        }
        setState(Transaction.FINISHED_STATE);
        context.getTransactions().remove(xid);
        // Sync on transaction store to avoid out of order messages in the cursor
        // https://issues.apache.org/activemq/browse/AMQ-2594
        synchronized (transactionStore) {
           transactionStore.rollback(getTransactionId());

            try {
                fireAfterRollback();
            } catch (Throwable e) {
                LOG.warn("POST ROLLBACK FAILED: ", e);
                XAException xae = new XAException("POST ROLLBACK FAILED");
                xae.errorCode = XAException.XAER_RMERR;
                xae.initCause(e);
                throw xae;
            }
        }
    }

    @Override
    public int prepare() throws XAException {
        XAException xae = new XAException("Prepare not implemented on Local Transactions.");
        xae.errorCode = XAException.XAER_RMERR;
        throw xae;
    }

    @Override
    public TransactionId getTransactionId() {
        return xid;
    }
    
    @Override
    public Logger getLog() {
        return LOG;
    }
}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ LocalTransaction.java source code file:

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