| /* |
| * |
| * 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.v0_8; |
| |
| import java.nio.BufferUnderflowException; |
| import java.util.List; |
| |
| import org.apache.qpid.server.bytebuffer.QpidByteBuffer; |
| import org.apache.qpid.server.plugin.MessageFormat; |
| import org.apache.qpid.server.plugin.PluggableService; |
| import org.apache.qpid.server.protocol.v0_8.transport.ContentHeaderBody; |
| import org.apache.qpid.server.protocol.v0_8.transport.MessagePublishInfo; |
| import org.apache.qpid.server.store.MessageHandle; |
| import org.apache.qpid.server.store.MessageStore; |
| import org.apache.qpid.server.store.StoredMessage; |
| import org.apache.qpid.server.util.ConnectionScopedRuntimeException; |
| |
| @PluggableService |
| public class MessageFormat_0_9_1 implements MessageFormat<AMQMessage> |
| { |
| |
| public static final int AMQP_MESSAGE_FORMAT_0_9_1 = 91; |
| private static final byte MANDATORY_MASK = (byte)1; |
| private static final byte IMMEDIATE_MASK = (byte)2; |
| |
| |
| @Override |
| public String getType() |
| { |
| return "AMQP_0_9_1"; |
| } |
| |
| @Override |
| public int getSupportedFormat() |
| { |
| return AMQP_MESSAGE_FORMAT_0_9_1; |
| } |
| |
| @Override |
| public Class<AMQMessage> getMessageClass() |
| { |
| return AMQMessage.class; |
| } |
| |
| @Override |
| public QpidByteBuffer convertToMessageFormat(final AMQMessage message) |
| { |
| final MessagePublishInfo messagePublishInfo = message.getMessagePublishInfo(); |
| final ContentHeaderBody contentHeaderBody = message.getContentHeaderBody(); |
| AMQShortString exchange = messagePublishInfo.getExchange(); |
| AMQShortString routingKey = messagePublishInfo.getRoutingKey(); |
| int length = contentHeaderBody.getSize() + (exchange == null ? 0 : exchange.length()) + (routingKey == null ? 0 : routingKey.length()) + 3; |
| try (QpidByteBuffer headerBuf = QpidByteBuffer.allocateDirect(length); |
| QpidByteBuffer content = message.getContent()) |
| { |
| EncodingUtils.writeShortStringBytes(headerBuf, exchange); |
| EncodingUtils.writeShortStringBytes(headerBuf, routingKey); |
| byte flags = messagePublishInfo.isMandatory() ? (byte) 0 : MANDATORY_MASK; |
| if (messagePublishInfo.isImmediate()) |
| { |
| flags |= IMMEDIATE_MASK; |
| } |
| headerBuf.put(flags); |
| headerBuf.flip(); |
| |
| contentHeaderBody.writePayload(headerBuf); |
| |
| return QpidByteBuffer.concatenate(headerBuf, content); |
| } |
| } |
| |
| @Override |
| public AMQMessage createMessage(final QpidByteBuffer payload, |
| final MessageStore store, |
| final Object connectionReference) |
| { |
| try |
| { |
| AMQShortString exchange = readShortString(payload); |
| AMQShortString routingKey = readShortString(payload); |
| byte flags = payload.get(); |
| final MessagePublishInfo publishBody = new MessagePublishInfo(exchange, |
| (flags & IMMEDIATE_MASK) != 0, |
| (flags & MANDATORY_MASK) != 0, |
| routingKey); |
| final ContentHeaderBody contentHeaderBody = readContentBody(payload); |
| MessageMetaData mmd = new MessageMetaData(publishBody, contentHeaderBody); |
| |
| final MessageHandle<MessageMetaData> handle = store.addMessage(mmd); |
| handle.addContent(payload); |
| final StoredMessage<MessageMetaData> storedMessage = handle.allContentAdded(); |
| |
| return new AMQMessage(storedMessage, connectionReference); |
| } |
| catch (AMQFrameDecodingException | BufferUnderflowException e ) |
| { |
| throw new ConnectionScopedRuntimeException("Error parsing AMQP 0-9-1 message format", e); |
| } |
| } |
| |
| private ContentHeaderBody readContentBody(final QpidByteBuffer buf) throws AMQFrameDecodingException |
| { |
| long size = buf.getUnsignedInt(); |
| try (QpidByteBuffer buffer = readByteBuffer(buf, size)) |
| { |
| final long newPosition = buf.position() + size; |
| if (newPosition > Integer.MAX_VALUE) |
| { |
| throw new IllegalStateException(String.format("trying to advance QBB to %d which is larger than MAX_INT", |
| newPosition)); |
| } |
| buf.position((int) newPosition); |
| return new ContentHeaderBody(buffer, size); |
| } |
| } |
| |
| private QpidByteBuffer readByteBuffer(final QpidByteBuffer data, final long size) |
| { |
| return data.view(0, (int)size); |
| } |
| |
| private int readInt(final List<QpidByteBuffer> data) |
| { |
| int required = 4; |
| int result = 0; |
| for(QpidByteBuffer buf : data) |
| { |
| if(required == 4 && buf.remaining() >= 4) |
| { |
| return buf.getInt(); |
| } |
| else |
| { |
| while(buf.remaining() > 0) |
| { |
| result <<= 8; |
| result |= ((int)buf.get()) & 0xff; |
| if(--required == 0) |
| { |
| return result; |
| } |
| } |
| } |
| } |
| throw new BufferUnderflowException(); |
| } |
| |
| private AMQShortString readShortString(final QpidByteBuffer data) |
| { |
| return AMQShortString.readAMQShortString(data); |
| } |
| } |