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/*
* librdkafka - Apache Kafka C/C++ library
*
* Copyright (c) 2014-2022, Magnus Edenhill
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. 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.
*/
#include "rdkafkacpp_int.h"
using namespace RdKafka;
BrokerMetadata::~BrokerMetadata() {
}
PartitionMetadata::~PartitionMetadata() {
}
TopicMetadata::~TopicMetadata() {
}
Metadata::~Metadata() {
}
/**
* Metadata: Broker information handler implementation
*/
class BrokerMetadataImpl : public BrokerMetadata {
public:
BrokerMetadataImpl(const rd_kafka_metadata_broker_t *broker_metadata) :
broker_metadata_(broker_metadata), host_(broker_metadata->host) {
}
int32_t id() const {
return broker_metadata_->id;
}
std::string host() const {
return host_;
}
int port() const {
return broker_metadata_->port;
}
virtual ~BrokerMetadataImpl() {
}
private:
const rd_kafka_metadata_broker_t *broker_metadata_;
const std::string host_;
};
/**
* Metadata: Partition information handler
*/
class PartitionMetadataImpl : public PartitionMetadata {
public:
// @TODO too much memory copy? maybe we should create a new vector class that
// read directly from C arrays?
// @TODO use auto_ptr?
PartitionMetadataImpl(
const rd_kafka_metadata_partition_t *partition_metadata) :
partition_metadata_(partition_metadata) {
replicas_.reserve(partition_metadata->replica_cnt);
for (int i = 0; i < partition_metadata->replica_cnt; ++i)
replicas_.push_back(partition_metadata->replicas[i]);
isrs_.reserve(partition_metadata->isr_cnt);
for (int i = 0; i < partition_metadata->isr_cnt; ++i)
isrs_.push_back(partition_metadata->isrs[i]);
}
int32_t id() const {
return partition_metadata_->id;
}
int32_t leader() const {
return partition_metadata_->leader;
}
ErrorCode err() const {
return static_cast<ErrorCode>(partition_metadata_->err);
}
const std::vector<int32_t> *replicas() const {
return &replicas_;
}
const std::vector<int32_t> *isrs() const {
return &isrs_;
}
~PartitionMetadataImpl() {
}
private:
const rd_kafka_metadata_partition_t *partition_metadata_;
std::vector<int32_t> replicas_, isrs_;
};
/**
* Metadata: Topic information handler
*/
class TopicMetadataImpl : public TopicMetadata {
public:
TopicMetadataImpl(const rd_kafka_metadata_topic_t *topic_metadata) :
topic_metadata_(topic_metadata), topic_(topic_metadata->topic) {
partitions_.reserve(topic_metadata->partition_cnt);
for (int i = 0; i < topic_metadata->partition_cnt; ++i)
partitions_.push_back(
new PartitionMetadataImpl(&topic_metadata->partitions[i]));
}
~TopicMetadataImpl() {
for (size_t i = 0; i < partitions_.size(); ++i)
delete partitions_[i];
}
std::string topic() const {
return topic_;
}
const std::vector<const PartitionMetadata *> *partitions() const {
return &partitions_;
}
ErrorCode err() const {
return static_cast<ErrorCode>(topic_metadata_->err);
}
private:
const rd_kafka_metadata_topic_t *topic_metadata_;
const std::string topic_;
std::vector<const PartitionMetadata *> partitions_;
};
MetadataImpl::MetadataImpl(const rd_kafka_metadata_t *metadata) :
metadata_(metadata) {
brokers_.reserve(metadata->broker_cnt);
for (int i = 0; i < metadata->broker_cnt; ++i)
brokers_.push_back(new BrokerMetadataImpl(&metadata->brokers[i]));
topics_.reserve(metadata->topic_cnt);
for (int i = 0; i < metadata->topic_cnt; ++i)
topics_.push_back(new TopicMetadataImpl(&metadata->topics[i]));
}
MetadataImpl::~MetadataImpl() {
for (size_t i = 0; i < brokers_.size(); ++i)
delete brokers_[i];
for (size_t i = 0; i < topics_.size(); ++i)
delete topics_[i];
if (metadata_)
rd_kafka_metadata_destroy(metadata_);
}
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