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ActiveMQ example source code file (WireFormatInfo.java)

This example ActiveMQ source code file (WireFormatInfo.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

bytesequence, endpoint, integer, io, ioexception, ioexception, long, long, magic, map, map, max_property_size, object, object, stacktraceenabled, util

The ActiveMQ WireFormatInfo.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.command;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.apache.activemq.state.CommandVisitor;
import org.apache.activemq.util.ByteArrayInputStream;
import org.apache.activemq.util.ByteArrayOutputStream;
import org.apache.activemq.util.ByteSequence;
import org.apache.activemq.util.MarshallingSupport;
import org.apache.activemq.wireformat.WireFormat;

/**
 * @openwire:marshaller code="1"
 * 
 */
public class WireFormatInfo implements Command, MarshallAware {

    public static final byte DATA_STRUCTURE_TYPE = CommandTypes.WIREFORMAT_INFO;
    private static final int MAX_PROPERTY_SIZE = 1024 * 4;
    private static final byte MAGIC[] = new byte[] {'A', 'c', 't', 'i', 'v', 'e', 'M', 'Q'};

    protected byte magic[] = MAGIC;
    protected int version;
    protected ByteSequence marshalledProperties;

    protected transient Map<String, Object> properties;
    private transient Endpoint from;
    private transient Endpoint to;

    public byte getDataStructureType() {
        return DATA_STRUCTURE_TYPE;
    }

    public boolean isWireFormatInfo() {
        return true;
    }

    public boolean isMarshallAware() {
        return true;
    }

    /**
     * @openwire:property version=1 size=8 testSize=-1
     */
    public byte[] getMagic() {
        return magic;
    }

    public void setMagic(byte[] magic) {
        this.magic = magic;
    }

    /**
     * @openwire:property version=1
     */
    public int getVersion() {
        return version;
    }

    public void setVersion(int version) {
        this.version = version;
    }

    /**
     * @openwire:property version=1
     */
    public ByteSequence getMarshalledProperties() {
        return marshalledProperties;
    }

    public void setMarshalledProperties(ByteSequence marshalledProperties) {
        this.marshalledProperties = marshalledProperties;
    }

    /**
     * The endpoint within the transport where this message came from.
     */
    public Endpoint getFrom() {
        return from;
    }

    public void setFrom(Endpoint from) {
        this.from = from;
    }

    /**
     * The endpoint within the transport where this message is going to - null
     * means all endpoints.
     */
    public Endpoint getTo() {
        return to;
    }

    public void setTo(Endpoint to) {
        this.to = to;
    }

    // ////////////////////
    // 
    // Implementation Methods.
    //
    // ////////////////////

    public Object getProperty(String name) throws IOException {
        if (properties == null) {
            if (marshalledProperties == null) {
                return null;
            }
            properties = unmarsallProperties(marshalledProperties);
        }
        return properties.get(name);
    }

    @SuppressWarnings("unchecked")
    public Map<String, Object> getProperties() throws IOException {
        if (properties == null) {
            if (marshalledProperties == null) {
                return Collections.EMPTY_MAP;
            }
            properties = unmarsallProperties(marshalledProperties);
        }
        return Collections.unmodifiableMap(properties);
    }

    public void clearProperties() {
        marshalledProperties = null;
        properties = null;
    }

    public void setProperty(String name, Object value) throws IOException {
        lazyCreateProperties();
        properties.put(name, value);
    }

    protected void lazyCreateProperties() throws IOException {
        if (properties == null) {
            if (marshalledProperties == null) {
                properties = new HashMap<String, Object>();
            } else {
                properties = unmarsallProperties(marshalledProperties);
                marshalledProperties = null;
            }
        }
    }

    private Map<String, Object> unmarsallProperties(ByteSequence marshalledProperties) throws IOException {
        return MarshallingSupport.unmarshalPrimitiveMap(new DataInputStream(new ByteArrayInputStream(marshalledProperties)), MAX_PROPERTY_SIZE);
    }

    public void beforeMarshall(WireFormat wireFormat) throws IOException {
        // Need to marshal the properties.
        if (marshalledProperties == null && properties != null) {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            DataOutputStream os = new DataOutputStream(baos);
            MarshallingSupport.marshalPrimitiveMap(properties, os);
            os.close();
            marshalledProperties = baos.toByteSequence();
        }
    }

    public void afterMarshall(WireFormat wireFormat) throws IOException {
    }

    public void beforeUnmarshall(WireFormat wireFormat) throws IOException {
    }

    public void afterUnmarshall(WireFormat wireFormat) throws IOException {
    }

    public boolean isValid() {
        return magic != null && Arrays.equals(magic, MAGIC);
    }

    public void setResponseRequired(boolean responseRequired) {
    }

    /**
     * @throws IOException
     */
    public boolean isCacheEnabled() throws IOException {
        return Boolean.TRUE == getProperty("CacheEnabled");
    }

    public void setCacheEnabled(boolean cacheEnabled) throws IOException {
        setProperty("CacheEnabled", cacheEnabled ? Boolean.TRUE : Boolean.FALSE);
    }

    /**
     * @throws IOException
     */
    public boolean isStackTraceEnabled() throws IOException {
        return Boolean.TRUE == getProperty("StackTraceEnabled");
    }

    public void setStackTraceEnabled(boolean stackTraceEnabled) throws IOException {
        setProperty("StackTraceEnabled", stackTraceEnabled ? Boolean.TRUE : Boolean.FALSE);
    }

    /**
     * @throws IOException
     */
    public boolean isTcpNoDelayEnabled() throws IOException {
        return Boolean.TRUE == getProperty("TcpNoDelayEnabled");
    }

    public void setTcpNoDelayEnabled(boolean tcpNoDelayEnabled) throws IOException {
        setProperty("TcpNoDelayEnabled", tcpNoDelayEnabled ? Boolean.TRUE : Boolean.FALSE);
    }

    /**
     * @throws IOException
     */
    public boolean isSizePrefixDisabled() throws IOException {
        return Boolean.TRUE == getProperty("SizePrefixDisabled");
    }

    public void setSizePrefixDisabled(boolean prefixPacketSize) throws IOException {
        setProperty("SizePrefixDisabled", prefixPacketSize ? Boolean.TRUE : Boolean.FALSE);
    }

    /**
     * @throws IOException
     */
    public boolean isTightEncodingEnabled() throws IOException {
        return Boolean.TRUE == getProperty("TightEncodingEnabled");
    }

    public void setTightEncodingEnabled(boolean tightEncodingEnabled) throws IOException {
        setProperty("TightEncodingEnabled", tightEncodingEnabled ? Boolean.TRUE : Boolean.FALSE);
    }

    /**
     * @throws IOException
     */
    public long getMaxInactivityDuration() throws IOException {
        Long l = (Long)getProperty("MaxInactivityDuration");
        return l == null ? 0 : l.longValue();
    }

    public void setMaxInactivityDuration(long maxInactivityDuration) throws IOException {
        setProperty("MaxInactivityDuration", new Long(maxInactivityDuration));
    }
    
    public long getMaxInactivityDurationInitalDelay() throws IOException {
        Long l = (Long)getProperty("MaxInactivityDurationInitalDelay");
        return l == null ? 0 : l.longValue();
    }

    public void setMaxInactivityDurationInitalDelay(long maxInactivityDurationInitalDelay) throws IOException {
        setProperty("MaxInactivityDurationInitalDelay", new Long(maxInactivityDurationInitalDelay));
    }
    
   

    /**
     * @throws IOException
     */
    public int getCacheSize() throws IOException {
        Integer i = (Integer)getProperty("CacheSize");
        return i == null ? 0 : i.intValue();
    }

    public void setCacheSize(int cacheSize) throws IOException {
        setProperty("CacheSize", new Integer(cacheSize));
    }

    public Response visit(CommandVisitor visitor) throws Exception {
        return visitor.processWireFormat(this);
    }

    @Override
    public String toString() {
        Map<String, Object> p = null;
        try {
            p = getProperties();
        } catch (IOException ignore) {
        }
        return "WireFormatInfo { version=" + version + ", properties=" + p + ", magic=" + toString(magic) + "}";
    }

    private String toString(byte[] data) {
        StringBuffer sb = new StringBuffer();
        sb.append('[');
        for (int i = 0; i < data.length; i++) {
            if (i != 0) {
                sb.append(',');
            }
            sb.append((char)data[i]);
        }
        sb.append(']');
        return sb.toString();
    }

    // /////////////////////////////////////////////////////////////
    //
    // This are not implemented.
    //
    // /////////////////////////////////////////////////////////////

    public void setCommandId(int value) {
    }

    public int getCommandId() {
        return 0;
    }

    public boolean isResponseRequired() {
        return false;
    }

    public boolean isResponse() {
        return false;
    }

    public boolean isBrokerInfo() {
        return false;
    }

    public boolean isMessageDispatch() {
        return false;
    }

    public boolean isMessage() {
        return false;
    }

    public boolean isMessageAck() {
        return false;
    }

    public boolean isMessageDispatchNotification() {
        return false;
    }

    public boolean isShutdownInfo() {
        return false;
    }
    
    public boolean isConnectionControl() {
        return false;
    }

    public void setCachedMarshalledForm(WireFormat wireFormat, ByteSequence data) {
    }

    public ByteSequence getCachedMarshalledForm(WireFormat wireFormat) {
        return null;
    }

}

Other ActiveMQ examples (source code examples)

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

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