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Puts together an ActiveMQ OSGi bundle
/**
* 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;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import javax.jms.InvalidDestinationException;
import javax.jms.JMSException;
import org.apache.activemq.command.ActiveMQBytesMessage;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQMessage;
import org.apache.activemq.command.MessageId;
import org.apache.activemq.command.ProducerId;
import org.apache.activemq.command.ProducerInfo;
import org.apache.activemq.util.IOExceptionSupport;
import org.apache.activemq.util.IntrospectionSupport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Deprecated
public class ActiveMQOutputStream extends OutputStream implements Disposable {
private static final Logger LOG = LoggerFactory.getLogger(ActiveMQOutputStream.class);
protected int count;
final byte buffer[];
private final ActiveMQConnection connection;
private final Map properties;
private final ProducerInfo info;
private long messageSequence;
private boolean closed;
private final int deliveryMode;
private final int priority;
private final long timeToLive;
private boolean alwaysSyncSend = false;
private boolean addPropertiesOnFirstMsgOnly = false;
/**
* JMS Property which is used to specify the size (in kb) which is used as chunk size when splitting the stream. Default is 64kb
*/
public final static String AMQ_STREAM_CHUNK_SIZE = "AMQ_STREAM_CHUNK_SIZE";
public ActiveMQOutputStream(ActiveMQConnection connection, ProducerId producerId, ActiveMQDestination destination, Map properties, int deliveryMode, int priority,
long timeToLive) throws JMSException {
this.connection = connection;
this.deliveryMode = deliveryMode;
this.priority = priority;
this.timeToLive = timeToLive;
this.properties = properties == null ? null : new HashMap(properties);
Integer chunkSize = this.properties == null ? null : (Integer) this.properties.get(AMQ_STREAM_CHUNK_SIZE);
if (chunkSize == null) {
chunkSize = 64 * 1024;
} else {
if (chunkSize < 1) {
throw new IllegalArgumentException("Chunk size must be greater then 0");
} else {
chunkSize *= 1024;
}
}
buffer = new byte[chunkSize];
if (destination == null) {
throw new InvalidDestinationException("Don't understand null destinations");
}
this.info = new ProducerInfo(producerId);
// Allows the options on the destination to configure the stream
if (destination.getOptions() != null) {
Map options = new HashMap(destination.getOptions());
IntrospectionSupport.setProperties(this, options, "producer.");
IntrospectionSupport.setProperties(this.info, options, "producer.");
if (options.size() > 0) {
String msg = "There are " + options.size()
+ " producer options that couldn't be set on the producer."
+ " Check the options are spelled correctly."
+ " Unknown parameters=[" + options + "]."
+ " This producer cannot be started.";
LOG.warn(msg);
throw new ConfigurationException(msg);
}
}
this.info.setDestination(destination);
this.connection.addOutputStream(this);
this.connection.asyncSendPacket(info);
}
@Override
public void close() throws IOException {
if (!closed) {
flushBuffer();
try {
// Send an EOS style empty message to signal EOS.
send(new ActiveMQMessage(), true);
dispose();
this.connection.asyncSendPacket(info.createRemoveCommand());
} catch (JMSException e) {
IOExceptionSupport.create(e);
}
}
}
@Override
public void dispose() {
if (!closed) {
this.connection.removeOutputStream(this);
closed = true;
}
}
@Override
public synchronized void write(int b) throws IOException {
buffer[count++] = (byte) b;
if (count == buffer.length) {
flushBuffer();
}
}
@Override
public synchronized void write(byte b[], int off, int len) throws IOException {
while (len > 0) {
int max = Math.min(len, buffer.length - count);
System.arraycopy(b, off, buffer, count, max);
len -= max;
count += max;
off += max;
if (count == buffer.length) {
flushBuffer();
}
}
}
@Override
public synchronized void flush() throws IOException {
flushBuffer();
}
private void flushBuffer() throws IOException {
if (count != 0) {
try {
ActiveMQBytesMessage msg = new ActiveMQBytesMessage();
msg.writeBytes(buffer, 0, count);
send(msg, false);
} catch (JMSException e) {
throw IOExceptionSupport.create(e);
}
count = 0;
}
}
/**
* @param msg
* @throws JMSException
*/
private void send(ActiveMQMessage msg, boolean eosMessage) throws JMSException {
if (properties != null && (messageSequence == 0 || !addPropertiesOnFirstMsgOnly)) {
for (Iterator iter = properties.keySet().iterator(); iter.hasNext();) {
String key = iter.next();
Object value = properties.get(key);
msg.setObjectProperty(key, value);
}
}
msg.setType("org.apache.activemq.Stream");
msg.setGroupID(info.getProducerId().toString());
if (eosMessage) {
msg.setGroupSequence(-1);
} else {
msg.setGroupSequence((int) messageSequence);
}
MessageId id = new MessageId(info.getProducerId(), messageSequence++);
connection.send(info.getDestination(), msg, id, deliveryMode, priority, timeToLive, !eosMessage && !isAlwaysSyncSend());
}
@Override
public String toString() {
return "ActiveMQOutputStream { producerId=" + info.getProducerId() + " }";
}
public boolean isAlwaysSyncSend() {
return alwaysSyncSend;
}
public void setAlwaysSyncSend(boolean alwaysSyncSend) {
this.alwaysSyncSend = alwaysSyncSend;
}
public boolean isAddPropertiesOnFirstMsgOnly() {
return addPropertiesOnFirstMsgOnly;
}
public void setAddPropertiesOnFirstMsgOnly(boolean propertiesOnFirstMsgOnly) {
this.addPropertiesOnFirstMsgOnly = propertiesOnFirstMsgOnly;
}
}