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#ifndef QPID_BROKER_QUEUEDEPTH_H
#define QPID_BROKER_QUEUEDEPTH_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/broker/BrokerImportExport.h"
#include "qpid/sys/IntegerTypes.h"
#include <ostream>
namespace qpid {
namespace broker {
/**
* Represents a queue depth in message count and/or aggregate message
* size.
*/
class QueueDepth
{
public:
QPID_BROKER_EXTERN QueueDepth();
QPID_BROKER_EXTERN QueueDepth(uint32_t count, uint64_t size);
QPID_BROKER_EXTERN QueueDepth& operator+=(const QueueDepth&);
QPID_BROKER_EXTERN QueueDepth& operator-=(const QueueDepth&);
QPID_BROKER_EXTERN bool operator==(const QueueDepth&) const;
QPID_BROKER_EXTERN bool operator!=(const QueueDepth&) const;
QPID_BROKER_EXTERN bool operator<(const QueueDepth& other) const;
QPID_BROKER_EXTERN bool operator>(const QueueDepth& other) const;
QPID_BROKER_EXTERN operator bool() const;
QPID_BROKER_EXTERN bool hasCount() const;
QPID_BROKER_EXTERN uint32_t getCount() const;
QPID_BROKER_EXTERN void setCount(uint32_t);
QPID_BROKER_EXTERN bool hasSize() const;
QPID_BROKER_EXTERN uint64_t getSize() const;
QPID_BROKER_EXTERN void setSize(uint64_t);
friend QPID_BROKER_EXTERN QueueDepth operator-(const QueueDepth&, const QueueDepth&);
friend QPID_BROKER_EXTERN QueueDepth operator+(const QueueDepth&, const QueueDepth&);
template <typename T> struct Optional
{
T value;
bool valid;
Optional(T v) : value(v), valid(true) {}
Optional() : value(0), valid(false) {}
};
private:
Optional<uint32_t> count;
Optional<uint64_t> size;
};
QPID_BROKER_EXTERN QueueDepth operator-(const QueueDepth&, const QueueDepth&);
QPID_BROKER_EXTERN QueueDepth operator+(const QueueDepth&, const QueueDepth&);
std::ostream& operator<<(std::ostream&, const QueueDepth&);
}} // namespace qpid::broker
#endif /*!QPID_BROKER_QUEUEDEPTH_H*/
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