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This commit is contained in:
Mikhail Filimonov
2020-05-22 17:24:19 +02:00
parent 3b67ba072a
commit 244726c251
2 changed files with 8 additions and 25 deletions
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27
include/cppkafka/kafka_handle_base.h
View File

@@ -343,23 +343,11 @@ public:
#if RD_KAFKA_VERSION >= RD_KAFKA_DESTROY_FLAGS_SUPPORT_VERSION
/**
* \brief Sets flags for rd_kafka_destroy_flags()
*
* 0 (default) - calls consumer_close() during handle destruction
* to leave group and commit final offsets.
*
* RD_KAFKA_DESTROY_F_NO_CONSUMER_CLOSE - don't call consumer_close()
*
* Details: see https://github.com/edenhill/librdkafka/blob/8fc678518738c6b80380326dad86ef62228f87f0/src/rdkafka.h#L2612-L2651
*
* With default value some termination sequences can lead to hang
* during destruction, see: https://github.com/edenhill/librdkafka/issues/2077
*
*/
void set_destroy_flags(int destroy_flags);
/**
* \brief Returns destroy_flags
*
* \brief Returns flags for rd_kafka_destroy_flags()
*/
int get_destroy_flags() const;
@@ -381,20 +369,14 @@ protected:
private:
static const std::chrono::milliseconds DEFAULT_TIMEOUT;
// It seems that destroy_flags maybe RD_KAFKA_DESTROY_F_NO_CONSUMER_CLOSE by default.
//
// All the consumer objects created by cppkafka call rd_kafka_consumer_close during destruction.
// So we don't want it to be called once again during handle destruction.
int destroy_flags_ = 0;
struct handle_deleter {
handle_deleter(const KafkaHandleBase * handle_base_ptr) : handle_base_ptr_{handle_base_ptr} {}
struct HandleDeleter {
explicit HandleDeleter(const KafkaHandleBase* handle_base_ptr) : handle_base_ptr_{handle_base_ptr} {}
void operator()(rd_kafka_t* handle);
private:
const KafkaHandleBase * handle_base_ptr_;
};
using HandlePtr = std::unique_ptr<rd_kafka_t, handle_deleter>;
using HandlePtr = std::unique_ptr<rd_kafka_t, HandleDeleter>;
using TopicConfigurationMap = std::unordered_map<std::string, TopicConfiguration>;
Topic get_topic(const std::string& name, rd_kafka_topic_conf_t* conf);
@@ -410,6 +392,7 @@ private:
TopicConfigurationMap topic_configurations_;
std::mutex topic_configurations_mutex_;
HandlePtr handle_;
int destroy_flags_;
};
} // cppkafka

6
src/kafka_handle_base.cpp
View File

@@ -48,7 +48,7 @@ namespace cppkafka {
const milliseconds KafkaHandleBase::DEFAULT_TIMEOUT{1000};
KafkaHandleBase::KafkaHandleBase(Configuration config)
: timeout_ms_(DEFAULT_TIMEOUT), config_(move(config)), handle_(nullptr, handle_deleter(this)) {
: timeout_ms_(DEFAULT_TIMEOUT), config_(move(config)), handle_(nullptr, HandleDeleter(this)), destroy_flags_(0) {
auto& maybe_config = config_.get_default_topic_configuration();
if (maybe_config) {
maybe_config->set_as_opaque();
@@ -213,7 +213,7 @@ void KafkaHandleBase::yield() const {
}
void KafkaHandleBase::set_handle(rd_kafka_t* handle) {
handle_ = HandlePtr(handle, handle_deleter(this));
handle_ = HandlePtr(handle, HandleDeleter(this));
}
Topic KafkaHandleBase::get_topic(const string& name, rd_kafka_topic_conf_t* conf) {
@@ -298,7 +298,7 @@ int KafkaHandleBase::get_destroy_flags() const {
#endif
void KafkaHandleBase::handle_deleter::operator()(rd_kafka_t* handle) {
void KafkaHandleBase::HandleDeleter::operator()(rd_kafka_t* handle) {
#if RD_KAFKA_VERSION >= RD_KAFKA_DESTROY_FLAGS_SUPPORT_VERSION
rd_kafka_destroy_flags(handle, handle_base_ptr_->get_destroy_flags());
#else