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#pragma once
#include "morpheus/messages/meta.hpp"
#include <cudf/io/types.hpp>
#include <librdkafka/rdkafkacpp.h>
#include <mrc/channel/status.hpp>// for Status
#include <mrc/node/source_properties.hpp>// for SourceProperties<>::source_type_t
#include <mrc/segment/builder.hpp>
#include <mrc/segment/object.hpp>// for Object
#include <pymrc/node.hpp>
#include <rxcpp/rx.hpp>// for apply, make_subscriber, observable_member, is_on_error<>::not_void, is_on_next_of<>::not_void, trace_activity
#include <cstddef>// for size_t
#include <cstdint>// for int32_t, uint32_t
#include <map>
#include <memory>
#include <string>
#include <vector>
namespace morpheus {
/****** Component public implementations *******************/
/****** KafkaSourceStage************************************/
#pragma GCC visibility push(default)
class KafkaSourceStage : public mrc::pymrc::PythonSource<std::shared_ptr<MessageMeta>>
{
public:
using base_t = mrc::pymrc::PythonSource<std::shared_ptr<MessageMeta>>;
using typename base_t::source_type_t;
using typename base_t::subscriber_fn_t;
KafkaSourceStage(size_t max_batch_size,
std::string topic,
int32_t batch_timeout_ms,
std::map<std::string, std::string> config,
bool disable_commit = false,
bool disable_pre_filtering = false,
size_t stop_after = 0,
bool async_commits = true);
~KafkaSourceStage() override = default;
std::size_t max_batch_size();
int32_t batch_timeout_ms();
private:
subscriber_fn_t build();
std::unique_ptr<RdKafka::Conf> build_kafka_conf(const std::map<std::string, std::string> &config_in);
std::unique_ptr<RdKafka::KafkaConsumer> create_consumer(RdKafka::RebalanceCb &rebalancer);
cudf::io::table_with_metadata load_table(const std::string &buffer);
std::shared_ptr<morpheus::MessageMeta> process_batch(
std::vector<std::unique_ptr<RdKafka::Message>> &&message_batch);
size_t m_max_batch_size{128};
uint32_t m_batch_timeout_ms{100};
std::string m_topic;
std::map<std::string, std::string> m_config;
bool m_disable_commit{false};
bool m_disable_pre_filtering{false};
bool m_requires_commit{false}; // Whether or not manual committing is required
bool m_async_commits{true};
size_t m_stop_after{0};
void *m_rebalancer;
};
/****** KafkaSourceStageInferenceProxy**********************/
struct KafkaSourceStageInterfaceProxy
{
static std::shared_ptr<mrc::segment::Object<KafkaSourceStage>> init(mrc::segment::Builder& builder,
const std::string& name,
size_t max_batch_size,
std::string topic,
int32_t batch_timeout_ms,
std::map<std::string, std::string> config,
bool disable_commit,
bool disable_pre_filtering,
size_t stop_after = 0,
bool async_commits = true);
};
#pragma GCC visibility pop// end of group
} // namespace morpheus