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#ifndef _broker_Message_h
#define _broker_Message_h
/*
*
* 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.
*
*/
#include "qpid/RefCounted.h"
#include "qpid/broker/PersistableMessage.h"
//TODO: move the following out of framing or replace it
#include "qpid/framing/SequenceNumber.h"
#include "qpid/sys/Time.h"
#include "qpid/types/Variant.h"
#include "qpid/broker/BrokerImportExport.h"
#include <string>
#include <vector>
#include <boost/intrusive_ptr.hpp>
#include <boost/scoped_ptr.hpp>
namespace qpid {
namespace amqp {
class MapHandler;
struct MessageId;
}
namespace management {
class ObjectId;
class Manageable;
}
namespace broker {
class OwnershipToken;
class Connection;
enum MessageState
{
AVAILABLE=1,
ACQUIRED=2,
DELETED=4,
UNAVAILABLE=8
};
class Message {
public:
class Encoding : public IngressCompletion
{
public:
virtual ~Encoding() {}
virtual std::string getRoutingKey() const = 0;
virtual bool isPersistent() const = 0;
virtual uint8_t getPriority() const = 0;
virtual uint64_t getMessageSize() const = 0;
virtual qpid::amqp::MessageId getMessageId() const = 0;
virtual qpid::amqp::MessageId getCorrelationId() const = 0;
virtual std::string getPropertyAsString(const std::string& key) const = 0;
virtual std::string getAnnotationAsString(const std::string& key) const = 0;
virtual bool getTtl(uint64_t&) const = 0;
virtual std::string getContent() const = 0;
virtual void processProperties(qpid::amqp::MapHandler&) const = 0;
virtual std::string getUserId() const = 0;
virtual uint64_t getTimestamp() const = 0;
};
class SharedState : public Encoding
{
public:
virtual ~SharedState() {}
virtual const Connection* getPublisher() const = 0;
virtual void setPublisher(const Connection* p) = 0;
virtual void setExpiration(sys::AbsTime e) = 0;
virtual sys::AbsTime getExpiration() const = 0;
virtual sys::Duration getTimeToExpiration() const = 0;
virtual void computeExpiration() = 0;
virtual bool getIsManagementMessage() const = 0;
virtual void setIsManagementMessage(bool b) = 0;
};
class SharedStateImpl : public SharedState
{
const Connection* publisher;
qpid::sys::AbsTime expiration;
bool isManagementMessage;
public:
QPID_BROKER_EXTERN SharedStateImpl();
virtual ~SharedStateImpl() {}
QPID_BROKER_EXTERN const Connection* getPublisher() const;
QPID_BROKER_EXTERN void setPublisher(const Connection* p);
QPID_BROKER_EXTERN void setExpiration(sys::AbsTime e);
QPID_BROKER_EXTERN sys::AbsTime getExpiration() const;
QPID_BROKER_EXTERN sys::Duration getTimeToExpiration() const;
QPID_BROKER_EXTERN void computeExpiration();
QPID_BROKER_EXTERN bool getIsManagementMessage() const;
QPID_BROKER_EXTERN void setIsManagementMessage(bool b);
};
QPID_BROKER_EXTERN Message(boost::intrusive_ptr<SharedState>, boost::intrusive_ptr<PersistableMessage>);
QPID_BROKER_EXTERN Message();
QPID_BROKER_EXTERN ~Message();
bool isRedelivered() const { return deliveryCount > 0; }
bool hasBeenAcquired() const { return alreadyAcquired; }
void deliver() { ++deliveryCount; alreadyAcquired |= (deliveryCount>0); }
void undeliver() { --deliveryCount; }
int getDeliveryCount() const { return deliveryCount; }
void resetDeliveryCount() { deliveryCount = -1; alreadyAcquired = false; }
const Connection* getPublisher() const;
bool isLocalTo(const OwnershipToken*) const;
QPID_BROKER_EXTERN std::string getRoutingKey() const;
QPID_BROKER_EXTERN bool isPersistent() const;
QPID_BROKER_EXTERN sys::AbsTime getExpiration() const;
uint64_t getTtl() const;
QPID_BROKER_EXTERN bool getTtl(uint64_t&) const;
QPID_BROKER_EXTERN uint64_t getTimestamp() const;
QPID_BROKER_EXTERN void addAnnotation(const std::string& key, const qpid::types::Variant& value);
QPID_BROKER_EXTERN bool isExcluded(const std::vector<std::string>& excludes) const;
QPID_BROKER_EXTERN void addTraceId(const std::string& id);
QPID_BROKER_EXTERN void clearTrace();
QPID_BROKER_EXTERN uint8_t getPriority() const;
QPID_BROKER_EXTERN std::string getPropertyAsString(const std::string& key) const;
QPID_BROKER_EXTERN qpid::types::Variant getProperty(const std::string& key) const;
void processProperties(qpid::amqp::MapHandler&) const;
QPID_BROKER_EXTERN uint64_t getMessageSize() const;
QPID_BROKER_EXTERN const Encoding& getEncoding() const;
QPID_BROKER_EXTERN operator bool() const;
QPID_BROKER_EXTERN SharedState& getSharedState();
bool getIsManagementMessage() const;
QPID_BROKER_EXTERN qpid::framing::SequenceNumber getSequence() const;
QPID_BROKER_EXTERN void setSequence(const qpid::framing::SequenceNumber&);
MessageState getState() const;
void setState(MessageState);
QPID_BROKER_EXTERN qpid::types::Variant getAnnotation(const std::string& key) const;
QPID_BROKER_EXTERN const qpid::types::Variant::Map& getAnnotations() const;
QPID_BROKER_EXTERN std::string getUserId() const;
QPID_BROKER_EXTERN std::string getContent() const;//Used for ha, management, when content needs to be decoded
QPID_BROKER_EXTERN boost::intrusive_ptr<AsyncCompletion> getIngressCompletion() const;
QPID_BROKER_EXTERN boost::intrusive_ptr<PersistableMessage> getPersistentContext() const;
QPID_BROKER_EXTERN bool hasReplicationId() const;
QPID_BROKER_EXTERN uint64_t getReplicationId() const;
QPID_BROKER_EXTERN void setReplicationId(framing::SequenceNumber id);
private:
/**
* Template for optional members that are only constructed when
* if/when needed, to conserve memory. (Boost::optional doesn't
* help here).
*/
template <typename T> class Optional
{
boost::scoped_ptr<T> value;
public:
Optional() : value(0) {}
Optional(const Optional<T>& o) : value(o.value ? new T(*o.value) : 0) {}
T& get()
{
if (!value) value.reset(new T);
return *value;
}
const T& operator*() const
{
return *value;
}
Optional<T>& operator=(const Optional<T>& o)
{
if (o.value) {
if (!value) value.reset(new T(*o.value));
}
return *this;
}
operator bool() const
{
return !!value;
}
};
boost::intrusive_ptr<SharedState> sharedState;
boost::intrusive_ptr<PersistableMessage> persistentContext;
int deliveryCount;
bool alreadyAcquired;
Optional<qpid::types::Variant::Map> annotations;
MessageState state;
qpid::framing::SequenceNumber sequence;
framing::SequenceNumber replicationId;
bool isReplicationIdSet:1;
void annotationsChanged();
bool getTtl(uint64_t&, uint64_t expiredValue) const;
};
}}
#endif
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