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https://github.com/Telecominfraproject/wlan-cloud-lib-cppkafka.git
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98 lines
3.6 KiB
C++
98 lines
3.6 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 CPP_KAFKA_CONSUMER_H
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#define CPP_KAFKA_CONSUMER_H
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#include <vector>
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#include <string>
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#include <chrono>
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#include <functional>
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#include "kafka_handle_base.h"
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#include "message.h"
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namespace cppkafka {
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class TopicConfiguration;
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class Consumer : public KafkaHandleBase {
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public:
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using AssignmentCallback = std::function<void(TopicPartitionList&)>;
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using RevocationCallback = std::function<void(const TopicPartitionList&)>;
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using RebalanceErrorCallback = std::function<void(rd_kafka_resp_err_t)>;
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Consumer(Configuration config);
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Consumer(const Consumer&) = delete;
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Consumer(Consumer&) = delete;
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Consumer& operator=(const Consumer&) = delete;
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Consumer& operator=(Consumer&&) = delete;
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~Consumer();
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void set_assignment_callback(AssignmentCallback callback);
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void set_revocation_callback(RevocationCallback callback);
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void set_rebalance_error_callback(RebalanceErrorCallback callback);
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void subscribe(const std::vector<std::string>& topics);
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void unsubscribe();
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void assign(const TopicPartitionList& topic_partitions);
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void unassign();
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void close();
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void commit(const Message& msg);
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void async_commit(const Message& msg);
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void commit(const TopicPartitionList& topic_partitions);
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void async_commit(const TopicPartitionList& topic_partitions);
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OffsetTuple get_offsets(const std::string& topic, int partition) const;
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TopicPartitionList get_offsets_committed(const TopicPartitionList& topic_partitions) const;
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TopicPartitionList get_offsets_position(const TopicPartitionList& topic_partitions) const;
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TopicPartitionList get_subscription() const;
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TopicPartitionList get_assignment() const;
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std::string get_member_id() const;
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Message poll();
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private:
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static void rebalance_proxy(rd_kafka_t *handle, rd_kafka_resp_err_t error,
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rd_kafka_topic_partition_list_t *partitions, void *opaque);
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void commit(const Message& msg, bool async);
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void commit(const TopicPartitionList& topic_partitions, bool async);
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void handle_rebalance(rd_kafka_resp_err_t err, TopicPartitionList& topic_partitions);
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AssignmentCallback assignment_callback_;
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RevocationCallback revocation_callback_;
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RebalanceErrorCallback rebalance_error_callback_;
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};
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} // cppkafka
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#endif // CPP_KAFKA_CONSUMER_H
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