/*
*
* 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.qpid.server.protocol.v1_0;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import org.apache.qpid.amqp_1_0.messaging.SectionDecoderImpl;
import org.apache.qpid.amqp_1_0.type.AmqpErrorException;
import org.apache.qpid.amqp_1_0.type.Binary;
import org.apache.qpid.amqp_1_0.type.Section;
import org.apache.qpid.amqp_1_0.type.Symbol;
import org.apache.qpid.amqp_1_0.type.UnsignedByte;
import org.apache.qpid.amqp_1_0.type.UnsignedInteger;
import org.apache.qpid.amqp_1_0.type.UnsignedLong;
import org.apache.qpid.amqp_1_0.type.UnsignedShort;
import org.apache.qpid.amqp_1_0.type.messaging.AmqpSequence;
import org.apache.qpid.amqp_1_0.type.messaging.AmqpValue;
import org.apache.qpid.amqp_1_0.type.messaging.Data;
import org.apache.qpid.server.util.ConnectionScopedRuntimeException;
import org.apache.qpid.transport.codec.BBEncoder;
import org.apache.qpid.typedmessage.TypedBytesContentWriter;
import org.apache.qpid.typedmessage.TypedBytesFormatException;
public class MessageConverter_from_1_0
{
private static final Charset UTF_8 = Charset.forName("UTF-8");
public static Object convertBodyToObject(final Message_1_0 serverMessage)
{
byte[] data = new byte[(int) serverMessage.getSize()];
serverMessage.getStoredMessage().getContent(0, ByteBuffer.wrap(data));
SectionDecoderImpl sectionDecoder = new SectionDecoderImpl(MessageConverter_v1_0_to_Internal.TYPE_REGISTRY);
Object bodyObject;
try
{
List<Section> sections = sectionDecoder.parseAll(ByteBuffer.wrap(data));
ListIterator<Section> iterator = sections.listIterator();
Section previousSection = null;
while(iterator.hasNext())
{
Section section = iterator.next();
if(!(section instanceof AmqpValue || section instanceof Data || section instanceof AmqpSequence))
{
iterator.remove();
}
else
{
if(previousSection != null && (previousSection.getClass() != section.getClass() || section instanceof AmqpValue))
{
throw new ConnectionScopedRuntimeException("Message is badly formed and has multiple body section which are not all Data or not all AmqpSequence");
}
else
{
previousSection = section;
}
}
}
if(sections.isEmpty())
{
// should actually be illegal
bodyObject = new byte[0];
}
else
{
Section firstBodySection = sections.get(0);
if(firstBodySection instanceof AmqpValue)
{
bodyObject = convertValue(((AmqpValue)firstBodySection).getValue());
}
else if(firstBodySection instanceof Data)
{
int totalSize = 0;
for(Section section : sections)
{
totalSize += ((Data)section).getValue().getLength();
}
byte[] bodyData = new byte[totalSize];
ByteBuffer buf = ByteBuffer.wrap(bodyData);
for(Section section : sections)
{
buf.put(((Data)section).getValue().asByteBuffer());
}
bodyObject = bodyData;
}
else
{
ArrayList totalSequence = new ArrayList();
for(Section section : sections)
{
totalSequence.addAll(((AmqpSequence)section).getValue());
}
bodyObject = convertValue(totalSequence);
}
}
}
catch (AmqpErrorException e)
{
throw new ConnectionScopedRuntimeException(e);
}
return bodyObject;
}
private static final Set<Class> STANDARD_TYPES = new HashSet<>(Arrays.<Class>asList(Boolean.class,
Byte.class,
Short.class,
Integer.class,
Long.class,
Float.class,
Double.class,
Character.class,
String.class,
byte[].class,
UUID.class));
private static Map convertMap(final Map map)
{
Map resultMap = new LinkedHashMap();
Iterator<Map.Entry> iterator = map.entrySet().iterator();
while(iterator.hasNext())
{
Map.Entry entry = iterator.next();
resultMap.put(convertValue(entry.getKey()), convertValue(entry.getValue()));
}
return resultMap;
}
public static Object convertValue(final Object value)
{
if(value != null && !STANDARD_TYPES.contains(value))
{
if(value instanceof Map)
{
return convertMap((Map)value);
}
else if(value instanceof List)
{
return convertList((List)value);
}
else if(value instanceof UnsignedByte)
{
return ((UnsignedByte)value).shortValue();
}
else if(value instanceof UnsignedShort)
{
return ((UnsignedShort)value).intValue();
}
else if(value instanceof UnsignedInteger)
{
return ((UnsignedInteger)value).longValue();
}
else if(value instanceof UnsignedLong)
{
return ((UnsignedLong)value).longValue();
}
else if(value instanceof Symbol)
{
return value.toString();
}
else if(value instanceof Date)
{
return ((Date)value).getTime();
}
else if(value instanceof Binary)
{
Binary binary = (Binary)value;
byte[] data = new byte[binary.getLength()];
binary.asByteBuffer().get(data);
return data;
}
else
{
// Throw exception instead?
return value.toString();
}
}
else
{
return value;
}
}
private static List convertList(final List list)
{
List result = new ArrayList(list.size());
for(Object entry : list)
{
result.add(convertValue(entry));
}
return result;
}
public static byte[] convertToBody(Object object)
{
if(object instanceof String)
{
return ((String)object).getBytes(UTF_8);
}
else if(object instanceof byte[])
{
return (byte[]) object;
}
else if(object instanceof Map)
{
BBEncoder encoder = new BBEncoder(1024);
encoder.writeMap((Map)object);
ByteBuffer buf = encoder.segment();
int remaining = buf.remaining();
byte[] data = new byte[remaining];
buf.get(data);
return data;
}
else if(object instanceof List)
{
try
{
ByteBuffer buf;
if(onlyPrimitiveTypes((List)object))
{
TypedBytesContentWriter writer = new TypedBytesContentWriter();
for(Object value : (List)object)
{
writer.writeObject(value);
}
buf = writer.getData();
}
else
{
BBEncoder encoder = new BBEncoder(1024);
encoder.writeList((List) object);
buf = encoder.segment();
}
int remaining = buf.remaining();
byte[] data = new byte[remaining];
buf.get(data);
return data;
}
catch (TypedBytesFormatException e)
{
throw new ConnectionScopedRuntimeException(e);
}
}
else
{
ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
try
{
ObjectOutputStream os = new ObjectOutputStream(bytesOut);
os.writeObject(object);
return bytesOut.toByteArray();
}
catch (IOException e)
{
throw new ConnectionScopedRuntimeException(e);
}
}
}
public static boolean onlyPrimitiveTypes(final List list)
{
for(Object value : list)
{
if(!(value instanceof String
|| value instanceof Integer
|| value instanceof Long
|| value instanceof Double
|| value instanceof Float
|| value instanceof Byte
|| value instanceof Short
|| value instanceof Character
|| value instanceof Boolean
|| value instanceof byte[]))
{
return false;
}
}
return true;
}
public static String getBodyMimeType(Object object)
{
if(object instanceof String)
{
return "text/plain";
}
else if(object instanceof byte[])
{
return "application/octet-stream";
}
else if(object instanceof Map)
{
return "amqp/map";
}
else if(object instanceof List)
{
return onlyPrimitiveTypes((List)object) ? "jms/stream-message" : "amqp/list";
}
else
{
return "application/java-object-stream";
}
}
}