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https://github.com/Telecominfraproject/wlan-cloud-lib-cppkafka.git
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133 lines
3.4 KiB
C++
133 lines
3.4 KiB
C++
/*
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* Copyright (c) 2016, Matias Fontanini
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef CPPKAFKA_TOPIC_PARTITION_H
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#define CPPKAFKA_TOPIC_PARTITION_H
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#include <string>
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#include <iosfwd>
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#include <cstdint>
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#include "macros.h"
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namespace cppkafka {
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/**
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* Represents a topic/partition
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*/
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class CPPKAFKA_API TopicPartition {
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public:
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/**
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* Special offsets enum
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*/
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enum Offset {
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OFFSET_BEGINNING = -2,
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OFFSET_END = -1,
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OFFSET_STORED = -1000,
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OFFSET_INVALID = -1001
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};
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/**
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* Default constructs a topic/partition
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*/
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TopicPartition();
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/**
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* \brief Constructs a topic/partition
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*
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* The partition value will be RD_KAFKA_OFFSET_INVALID
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*
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* \param topic The topic name
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*/
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TopicPartition(const char* topic);
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/**
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* \brief Constructs a topic/partition
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*
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* The partition value will be RD_KAFKA_OFFSET_INVALID
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*
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* \param topic The topic name
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*/
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TopicPartition(std::string topic);
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/**
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* Constructs a topic/partition
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*
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* \param topic The topic name
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* \param partition The partition to be used
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*/
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TopicPartition(std::string topic, int partition);
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/**
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* Constructs a topic/partition
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*
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* \param topic The topic name
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* \param partition The partition to be used
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* \param offset The offset to be used
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*/
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TopicPartition(std::string topic, int partition, int64_t offset);
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/**
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* Gets the topic name
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*/
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const std::string& get_topic() const;
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/**
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* Gets the partition
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*/
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int get_partition() const;
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/**
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* Gets the offset
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*/
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int64_t get_offset() const;
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/**
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* Sets the offset
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*/
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void set_offset(int64_t offset);
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/**
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* Compare the (topic, partition) for less-than equality
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*/
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bool operator<(const TopicPartition& rhs) const;
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/**
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* Print to a stream
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*/
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friend std::ostream& operator<<(std::ostream& output, const TopicPartition& rhs);
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private:
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std::string topic_;
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int partition_;
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int64_t offset_;
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};
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} // cppkafka
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#endif // CPPKAFKA_TOPIC_PARTITION_H
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