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Add MessageBuilder and use it on producer classes

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This commit is contained in:
Matias Fontanini
2017-04-15 16:46:37 -07:00
parent c8154ac6cb
commit e26d7e7db2
10 changed files with 224 additions and 127 deletions
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91
include/cppkafka/utils/buffered_producer.h
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@@ -29,24 +29,9 @@ public:
*
* The message won't be sent until flush is called.
*
* \param topic The topic in which this message should be written to
* \param partition The partition in which this message should be written to
* \param payload The message's payload
* \param builder The builder that contains the message to be added
*/
void add_message(const std::string& topic, const Partition& partition, BufferType payload);
/**
* \brief Adds a message to the producer's buffer.
*
* The message won't be sent until flush is called.
*
* \param topic The topic in which this message should be written to
* \param partition The partition in which this message should be written to
* \param key The message's key
* \param payload The message's payload
*/
void add_message(const std::string& topic, const Partition& partition, BufferType key,
BufferType payload);
void add_message(const MessageBuilder& builder);
/**
* \brief Flushes the buffered messages.
@@ -68,34 +53,13 @@ private:
// Pick the most appropriate index type depending on the platform we're using
using IndexType = std::conditional<sizeof(void*) == 8, uint64_t, uint32_t>::type;
struct BufferedMessage {
BufferedMessage(unsigned topic_index, Partition partition, BufferType key,
BufferType payload)
: key(std::move(key)), payload(std::move(payload)), topic_index(topic_index),
partition(partition) {
}
BufferedMessage(unsigned topic_index, Partition partition, BufferType payload)
: payload(std::move(payload)), topic_index(topic_index), partition(partition) {
}
boost::optional<BufferType> key;
BufferType payload;
unsigned topic_index;
Partition partition;
};
template <typename... Args>
void buffer_message(const std::string& topic, Args&&... args);
unsigned get_topic_index(const std::string& topic);
void produce_message(IndexType index, const BufferedMessage& message);
const Topic& get_topic(const std::string& topic);
void produce_message(IndexType index, MessageBuilder& message);
Configuration prepare_configuration(Configuration config);
void on_delivery_report(const Message& message);
Producer producer_;
std::map<IndexType, BufferedMessage> messages_;
std::map<IndexType, MessageBuilder> messages_;
std::vector<IndexType> failed_indexes_;
IndexType current_index_{0};
std::vector<Topic> topics_;
@@ -109,15 +73,19 @@ BufferedProducer<BufferType>::BufferedProducer(Configuration config)
}
template <typename BufferType>
void BufferedProducer<BufferType>::add_message(const std::string& topic,
const Partition& partition,
BufferType payload) {
buffer_message(topic, partition, payload);
void BufferedProducer<BufferType>::add_message(const MessageBuilder& builder) {
MessageBuilder local_builder(get_topic(builder.topic().get_name()));
local_builder.partition(builder.partition());
local_builder.key(builder.key());
local_builder.payload(builder.payload());
IndexType index = messages_.size();
messages_.emplace(index, std::move(local_builder));
}
template <typename BufferType>
void BufferedProducer<BufferType>::flush() {
for (const auto& message_pair : messages_) {
for (auto& message_pair : messages_) {
produce_message(message_pair.first, message_pair.second);
}
@@ -143,45 +111,24 @@ const Producer& BufferedProducer<BufferType>::get_producer() const {
}
template <typename BufferType>
void BufferedProducer<BufferType>::add_message(const std::string& topic,
const Partition& partition,
BufferType key, BufferType payload) {
buffer_message(topic, partition, key, payload);
}
template <typename BufferType>
template <typename... Args>
void BufferedProducer<BufferType>::buffer_message(const std::string& topic, Args&&... args) {
IndexType index = messages_.size();
BufferedMessage message{get_topic_index(topic), std::forward<Args>(args)...};
messages_.emplace(index, std::move(message));
}
template <typename BufferType>
unsigned BufferedProducer<BufferType>::get_topic_index(const std::string& topic) {
const Topic& BufferedProducer<BufferType>::get_topic(const std::string& topic) {
auto iter = topic_mapping_.find(topic);
if (iter == topic_mapping_.end()) {
unsigned index = topics_.size();
topics_.push_back(producer_.get_topic(topic));
iter = topic_mapping_.emplace(topic, index).first;
}
return iter->second;
return topics_[iter->second];
}
template <typename BufferType>
void BufferedProducer<BufferType>::produce_message(IndexType index,
const BufferedMessage& message) {
MessageBuilder& builder) {
bool sent = false;
builder.user_data(reinterpret_cast<void*>(index));
while (!sent) {
try {
if (message.key) {
producer_.produce(topics_[message.topic_index], message.partition, *message.key,
message.payload, reinterpret_cast<void*>(index));
}
else {
producer_.produce(topics_[message.topic_index], message.partition, {} /*key*/,
message.payload, reinterpret_cast<void*>(index));
}
producer_.produce(builder);
sent = true;
}
catch (const HandleException& ex) {