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wlan-cloud-lib-cppkafka/include/cppkafka/topic_configuration.h
2016-06-05 18:19:23 -07:00

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/*
* Copyright (c) 2016, Matias Fontanini
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef CPPKAFKA_TOPIC_CONFIGURATION_H
#define CPPKAFKA_TOPIC_CONFIGURATION_H
#include <string>
#include <functional>
#include <librdkafka/rdkafka.h>
#include "clonable_ptr.h"
#include "configuration_base.h"
namespace cppkafka {
class Topic;
class Buffer;
class TopicConfiguration : public ConfigurationBase<TopicConfiguration> {
public:
using PartitionerCallback = std::function<int32_t(const Topic&, const Buffer& key,
int32_t partition_count)>;
using ConfigurationBase<TopicConfiguration>::set;
TopicConfiguration();
void set(const std::string& name, const std::string& value);
void set_partitioner_callback(PartitionerCallback callback);
void set_as_opaque();
const PartitionerCallback& get_partitioner_callback() const;
rd_kafka_topic_conf_t* get_handle() const;
std::string get(const std::string& name) const;
private:
using HandlePtr = ClonablePtr<rd_kafka_topic_conf_t,
decltype(&rd_kafka_topic_conf_destroy),
decltype(&rd_kafka_topic_conf_dup)>;
TopicConfiguration(rd_kafka_topic_conf_t* ptr);
static HandlePtr make_handle(rd_kafka_topic_conf_t* ptr);
HandlePtr handle_;
PartitionerCallback partitioner_callback_;
};
} // cppkafka
#endif // CPPKAFKA_TOPIC_CONFIGURATION_H