Changed purge to async_flush

include/cppkafka/utils/buffered_producer.h

@@ -86,8 +86,8 @@ namespace cppkafka {
 template <typename BufferType>
 class CPPKAFKA_API BufferedProducer {
 public:
-    enum class EmptyBufferMethod { Flush,   ///< Empty the buffer and wait for acks from the broker
-                                   Purge }; ///< Empty the buffer and don't wait for acks
+    enum class FlushMethod { Sync,    ///< Empty the buffer and wait for acks from the broker
+                             Async }; ///< Empty the buffer and don't wait for acks
     /**
      * Concrete builder
      */
@@ -177,7 +177,7 @@ public:
      *
      * Similar to flush, it will send all messages but will not wait for acks to complete.
      */
-    void purge();
+    void async_flush();
 
     /**
      * \brief Flushes the buffered messages.
@@ -230,18 +230,19 @@ public:
     ssize_t get_max_buffer_size() const;
     
     /**
-     * \brief Sets the method used to empty the internal buffer when 'max_buffer_size' is reached. Default is 'Flush'
+     * \brief Sets the method used to flush the internal buffer when 'max_buffer_size' is reached.
+     *        Default is 'Sync'
      *
      * \param method The method
      */
-    void set_buffer_empty_method(EmptyBufferMethod method);
+    void set_flush_method(FlushMethod method);
     
     /**
-     * \brief Gets the method used to empty the internal buffer.
+     * \brief Gets the method used to flush the internal buffer.
      *
      * \return The method
      */
-    EmptyBufferMethod get_buffer_empty_method() const;
+    FlushMethod get_flush_method() const;
     
     /**
      * \brief Get the number of messages not yet acked by the broker
@@ -398,7 +399,7 @@ private:
         return nullptr;
     }
     template <typename BuilderType>
-    void do_add_message(BuilderType&& builder, MessagePriority priority, bool do_empty_buffer);
+    void do_add_message(BuilderType&& builder, MessagePriority priority, bool do_flush);
     template <typename BuilderType>
     void produce_message(BuilderType&& builder);
     Configuration prepare_configuration(Configuration config);
@@ -414,7 +415,7 @@ private:
     ProduceFailureCallback produce_failure_callback_;
     FlushFailureCallback flush_failure_callback_;
     ssize_t max_buffer_size_{-1};
-    EmptyBufferMethod empty_buffer_method_{EmptyBufferMethod::Flush};
+    FlushMethod flush_method_{FlushMethod::Sync};
     std::atomic<size_t> pending_acks_{0};
     std::atomic<size_t> flushes_in_progress_{0};
     std::atomic<size_t> total_messages_produced_{0};
@@ -495,7 +496,7 @@ void BufferedProducer<BufferType>::produce(const Message& message) {
 }
 
 template <typename BufferType>
-void BufferedProducer<BufferType>::purge() {
+void BufferedProducer<BufferType>::async_flush() {
     CounterGuard<size_t> counter_guard(flushes_in_progress_);
     QueueType flush_queue; // flush from temporary queue
     {
@@ -510,7 +511,7 @@ void BufferedProducer<BufferType>::purge() {
 
 template <typename BufferType>
 void BufferedProducer<BufferType>::flush() {
-    purge();
+    async_flush();
     wait_for_acks();
 }
 
@@ -558,21 +559,21 @@ ssize_t BufferedProducer<BufferType>::get_max_buffer_size() const {
 }
 
 template <typename BufferType>
-void BufferedProducer<BufferType>::set_buffer_empty_method(EmptyBufferMethod method) {
-    empty_buffer_method_ = method;
+void BufferedProducer<BufferType>::set_flush_method(FlushMethod method) {
+    flush_method_ = method;
 }
 
 template <typename BufferType>
-typename BufferedProducer<BufferType>::EmptyBufferMethod
-BufferedProducer<BufferType>::get_buffer_empty_method() const {
-    return empty_buffer_method_;
+typename BufferedProducer<BufferType>::FlushMethod
+BufferedProducer<BufferType>::get_flush_method() const {
+    return flush_method_;
 }
 
 template <typename BufferType>
 template <typename BuilderType>
 void BufferedProducer<BufferType>::do_add_message(BuilderType&& builder,
                                                   MessagePriority priority,
-                                                  bool do_empty_buffer) {
+                                                  bool do_flush) {
     {
         std::lock_guard<std::mutex> lock(mutex_);
         if (priority == MessagePriority::High) {
@@ -582,12 +583,12 @@ void BufferedProducer<BufferType>::do_add_message(BuilderType&& builder,
             messages_.emplace_back(std::forward<BuilderType>(builder));
         }
     }
-    if (do_empty_buffer && (max_buffer_size_ >= 0) && (max_buffer_size_ <= (ssize_t)messages_.size())) {
-        if (empty_buffer_method_ == EmptyBufferMethod::Flush) {
+    if (do_flush && (max_buffer_size_ >= 0) && (max_buffer_size_ <= (ssize_t)messages_.size())) {
+        if (flush_method_ == FlushMethod::Sync) {
             flush();
         }
         else {
-            purge();
+            async_flush();
         }
     }
 }