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Header support implementation (#115)

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* header support implementation

* Fixed issue when ptr is null and doesn't have a cloner function

* Code complete with test cases

updated travis file with v0.11.5

* Added compile time check for rdkafka header support version

* Changes per last code review

* Using brace list initializers
This commit is contained in:
Alex Damian
2018-10-16 13:58:05 -04:00
committed by Matias Fontanini
parent 9af4330c6d
commit fbe3759fed
20 changed files with 1316 additions and 51 deletions
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55
include/cppkafka/message.h
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@@ -39,6 +39,7 @@
#include "buffer.h"
#include "macros.h"
#include "error.h"
#include "header_list.h"
namespace cppkafka {
@@ -59,6 +60,10 @@ class CPPKAFKA_API Message {
public:
friend class MessageInternal;
using InternalPtr = std::shared_ptr<Internal>;
#if (RD_KAFKA_VERSION >= RD_KAFKA_HEADERS_SUPPORT_VERSION)
using HeaderType = Header<Buffer>;
using HeaderListType = HeaderList<HeaderType>;
#endif
/**
* Constructs a message that won't take ownership of the given pointer
*/
@@ -84,7 +89,7 @@ public:
Message& operator=(Message&& rhs) = default;
/**
* Gets the error attribute
* \brief Gets the error attribute
*/
Error get_error() const {
assert(handle_);
@@ -92,14 +97,14 @@ public:
}
/**
* Utility function to check for get_error() == RD_KAFKA_RESP_ERR__PARTITION_EOF
* \brief Utility function to check for get_error() == RD_KAFKA_RESP_ERR__PARTITION_EOF
*/
bool is_eof() const {
return get_error() == RD_KAFKA_RESP_ERR__PARTITION_EOF;
}
/**
* Gets the topic that this message belongs to
* \brief Gets the topic that this message belongs to
*/
std::string get_topic() const {
assert(handle_);
@@ -107,7 +112,7 @@ public:
}
/**
* Gets the partition that this message belongs to
* \brief Gets the partition that this message belongs to
*/
int get_partition() const {
assert(handle_);
@@ -115,21 +120,40 @@ public:
}
/**
* Gets the message's payload
* \brief Gets the message's payload
*/
const Buffer& get_payload() const {
return payload_;
}
#if (RD_KAFKA_VERSION >= RD_KAFKA_HEADERS_SUPPORT_VERSION)
/**
* \brief Gets the message's header list
*/
const HeaderListType& get_header_list() const {
return header_list_;
}
/**
* \brief Detaches the message's header list
*/
template <typename HeaderType>
HeaderList<HeaderType> detach_header_list() {
rd_kafka_headers_t* headers_handle;
Error error = rd_kafka_message_detach_headers(handle_.get(), &headers_handle);
return error ? HeaderList<HeaderType>() : HeaderList<HeaderType>(headers_handle);
}
#endif
/**
* Gets the message's key
* \brief Gets the message's key
*/
const Buffer& get_key() const {
return key_;
}
/**
* Gets the message offset
* \brief Gets the message offset
*/
int64_t get_offset() const {
assert(handle_);
@@ -152,23 +176,31 @@ public:
* If calling rd_kafka_message_timestamp returns -1, then boost::none_t will be returned.
*/
inline boost::optional<MessageTimestamp> get_timestamp() const;
/**
* \brief Gets the message latency in microseconds as measured from the produce() call.
*/
std::chrono::microseconds get_latency() const {
assert(handle_);
return std::chrono::microseconds(rd_kafka_message_latency(handle_.get()));
}
/**
* Indicates whether this message is valid (not null)
* \brief Indicates whether this message is valid (not null)
*/
explicit operator bool() const {
return handle_ != nullptr;
}
/**
* Gets the rdkafka message handle
* \brief Gets the rdkafka message handle
*/
rd_kafka_message_t* get_handle() const {
return handle_.get();
}
/**
* Internal private const data accessor (internal use only)
* \brief Internal private const data accessor (internal use only)
*/
InternalPtr internal() const {
return internal_;
@@ -185,6 +217,9 @@ private:
HandlePtr handle_;
Buffer payload_;
Buffer key_;
#if (RD_KAFKA_VERSION >= RD_KAFKA_HEADERS_SUPPORT_VERSION)
HeaderListType header_list_;
#endif
void* user_data_;
InternalPtr internal_;
};