Add initial config classes

src/CMakeLists.txt

@@ -0,0 +1,7 @@
+set(SOURCES
+    configuration.cpp
+    topic_configuration.cpp
+    exceptions.cpp
+)
+
+add_library(cppkafka ${SOURCES})

src/configuration.cpp

@@ -0,0 +1,42 @@
+#include "configuration.h"
+#include <librdkafka/rdkafka.h>
+#include "exceptions.h"
+
+using std::string;
+
+namespace cppkafka {
+
+Configuration::Configuration() 
+: handle_(make_handle(rd_kafka_conf_new())) {
+
+}
+
+Configuration::Configuration(rd_kafka_conf_t* ptr) 
+: handle_(make_handle(ptr)) {
+
+}
+
+Configuration::Configuration(const Configuration& rhs) 
+: handle_(make_handle(rd_kafka_conf_dup(rhs.handle_.get()))) {
+
+}
+
+Configuration& Configuration::operator=(const Configuration& rhs) {
+    handle_.reset(rd_kafka_conf_dup(rhs.handle_.get()));
+}
+
+void Configuration::set(const string& name, const string& value) {
+    char error_buffer[512];
+    rd_kafka_conf_res_t result;
+    result = rd_kafka_conf_set(handle_.get(), name.data(), value.data(), error_buffer,
+                               sizeof(error_buffer));
+    if (result != RD_KAFKA_CONF_OK) {
+        throw KafkaConfigException(name, error_buffer);
+    }
+}
+
+Configuration::HandlePtr Configuration::make_handle(rd_kafka_conf_t* ptr) {
+    return HandlePtr(ptr, &rd_kafka_conf_destroy);
+}     
+
+} // cppkafka

src/exceptions.cpp

@@ -0,0 +1,16 @@
+#include "exceptions.h"
+
+using std::string;
+
+namespace cppkafka {
+
+KafkaConfigException::KafkaConfigException(const string& config_name,
+                                           const string& error)
+: message_("Failed to set " + config_name + ": " + error) {
+}
+
+const char* KafkaConfigException::what() const noexcept {
+    return message_.data();
+}
+
+} // cppkafka

src/topic_configuration.cpp

@@ -0,0 +1,42 @@
+#include "topic_configuration.h"
+#include <librdkafka/rdkafka.h>
+#include "exceptions.h"
+
+using std::string;
+
+namespace cppkafka {
+
+TopicConfiguration::TopicConfiguration() 
+: handle_(make_handle(rd_kafka_topic_conf_new())) {
+
+}
+
+TopicConfiguration::TopicConfiguration(rd_kafka_topic_conf_t* ptr) 
+: handle_(make_handle(ptr)) {
+
+}
+
+TopicConfiguration::TopicConfiguration(const TopicConfiguration& rhs) 
+: handle_(make_handle(rd_kafka_topic_conf_dup(rhs.handle_.get()))) {
+
+}
+
+TopicConfiguration& TopicConfiguration::operator=(const TopicConfiguration& rhs) {
+    handle_.reset(rd_kafka_topic_conf_dup(rhs.handle_.get()));
+}
+
+void TopicConfiguration::set(const string& name, const string& value) {
+    char error_buffer[512];
+    rd_kafka_conf_res_t result;
+    result = rd_kafka_topic_conf_set(handle_.get(), name.data(), value.data(), error_buffer,
+                                     sizeof(error_buffer));
+    if (result != RD_KAFKA_CONF_OK) {
+        throw KafkaConfigException(name, error_buffer);
+    }
+}
+
+TopicConfiguration::HandlePtr TopicConfiguration::make_handle(rd_kafka_topic_conf_t* ptr) {
+    return HandlePtr(ptr, &rd_kafka_topic_conf_destroy);
+}     
+
+} // cppkafka