diff options
Diffstat (limited to 'Final/cpp/lib/broker/BrokerMessage.h')
-rw-r--r-- | Final/cpp/lib/broker/BrokerMessage.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/Final/cpp/lib/broker/BrokerMessage.h b/Final/cpp/lib/broker/BrokerMessage.h new file mode 100644 index 0000000000..1f68e1004a --- /dev/null +++ b/Final/cpp/lib/broker/BrokerMessage.h @@ -0,0 +1,145 @@ +/* + * + * 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. + * + */ +#ifndef _Message_ +#define _Message_ + +#include <memory> +#include <boost/shared_ptr.hpp> +#include <AMQContentBody.h> +#include <AMQHeaderBody.h> +#include <ProtocolVersion.h> +#include <BasicHeaderProperties.h> +#include <ConnectionToken.h> +#include <Content.h> +#include <OutputHandler.h> +#include <Mutex.h> +#include <TxBuffer.h> + +namespace qpid { + namespace broker { + + class MessageStore; + using qpid::framing::string; + + /** + * Represents an AMQP message, i.e. a header body, a list of + * content bodies and some details about the publication + * request. + */ + class Message{ + const ConnectionToken* const publisher; + string exchange; + string routingKey; + const bool mandatory; + const bool immediate; + bool redelivered; + qpid::framing::AMQHeaderBody::shared_ptr header; + std::auto_ptr<Content> content; + u_int64_t size; + u_int64_t persistenceId; + qpid::sys::Mutex contentLock; + + void sendContent(qpid::framing::OutputHandler* out, + int channel, u_int32_t framesize, qpid::framing::ProtocolVersion* version); + + public: + typedef boost::shared_ptr<Message> shared_ptr; + + Message(const ConnectionToken* const publisher, + const string& exchange, const string& routingKey, + bool mandatory, bool immediate); + Message(qpid::framing::Buffer& buffer, bool headersOnly = false, u_int32_t contentChunkSize = 0); + Message(); + ~Message(); + void setHeader(qpid::framing::AMQHeaderBody::shared_ptr header); + void addContent(qpid::framing::AMQContentBody::shared_ptr data); + bool isComplete(); + const ConnectionToken* const getPublisher(); + + void deliver(qpid::framing::OutputHandler* out, + int channel, + const string& consumerTag, + u_int64_t deliveryTag, + u_int32_t framesize, + qpid::framing::ProtocolVersion* version); + void sendGetOk(qpid::framing::OutputHandler* out, + int channel, + u_int32_t messageCount, + u_int64_t deliveryTag, + u_int32_t framesize, + qpid::framing::ProtocolVersion* version); + void redeliver(); + + qpid::framing::BasicHeaderProperties* getHeaderProperties(); + bool isPersistent(); + const string& getRoutingKey() const { return routingKey; } + const string& getExchange() const { return exchange; } + u_int64_t contentSize() const { return size; } + u_int64_t getPersistenceId() const { return persistenceId; } + void setPersistenceId(u_int64_t _persistenceId) { persistenceId = _persistenceId; } + + void decode(qpid::framing::Buffer& buffer, bool headersOnly = false, u_int32_t contentChunkSize = 0); + void decodeHeader(qpid::framing::Buffer& buffer); + void decodeContent(qpid::framing::Buffer& buffer, u_int32_t contentChunkSize = 0); + + void encode(qpid::framing::Buffer& buffer); + void encodeHeader(qpid::framing::Buffer& buffer); + void encodeContent(qpid::framing::Buffer& buffer); + /** + * @returns the size of the buffer needed to encode this + * message in its entirety + */ + u_int32_t encodedSize(); + /** + * @returns the size of the buffer needed to encode the + * 'header' of this message (not just the header frame, + * but other meta data e.g.routing key and exchange) + */ + u_int32_t encodedHeaderSize(); + /** + * @returns the size of the buffer needed to encode the + * (possibly partial) content held by this message + */ + u_int32_t encodedContentSize(); + /** + * Releases the in-memory content data held by this + * message. Must pass in a store from which the data can + * be reloaded. + */ + void releaseContent(MessageStore* store); + /** + * If headers have been received, returns the expected + * content size else returns 0. + */ + u_int64_t expectedContentSize(); + /** + * Sets the 'content' implementation of this message (the + * message controls the lifecycle of the content instance + * it uses). + */ + void setContent(std::auto_ptr<Content>& content); + }; + + } +} + + +#endif |