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Wait until the ack is received without timing out.

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wait_for_acks() should default to infinite timeout since the
original implementation was never timing out.
This commit is contained in:
Alexander Damian
2020-02-15 16:59:55 -05:00
parent ffcf8956bd
commit 5a057e4c99
1 changed files with 37 additions and 9 deletions
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46
include/cppkafka/utils/buffered_producer.h
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@@ -208,8 +208,14 @@ public:
/**
* \brief Same as sync_produce but waits up to 'timeout' for acks to be received.
*
* If retries are enabled, the timeout will limit the amount of time to wait
* before all retries are completed.
*
* \returns True if succeeded, false otherwise. If retries are enabled, false
* indicates there are still retries left.
*/
void sync_produce(const MessageBuilder& builder, std::chrono::milliseconds timeout);
bool sync_produce(const MessageBuilder& builder, std::chrono::milliseconds timeout);
/**
* \brief Produces a message asynchronously without buffering it
@@ -592,6 +598,10 @@ private:
void async_produce(BuilderType&& message, bool throw_on_error);
static void swap_queues(QueueType & queue1, QueueType & queue2, std::mutex & mutex);
// Static members
static const std::chrono::milliseconds infinite_timeout;
static const std::chrono::milliseconds no_timeout;
// Members
Producer producer_;
QueueType messages_;
@@ -618,6 +628,14 @@ private:
#endif
};
// Full blocking wait as per RdKafka
template <typename BufferType, typename Allocator>
const std::chrono::milliseconds
BufferedProducer<BufferType, Allocator>::infinite_timeout = std::chrono::milliseconds(-1);
template <typename BufferType, typename Allocator>
const std::chrono::milliseconds
BufferedProducer<BufferType, Allocator>::no_timeout = std::chrono::milliseconds::zero();
template <typename BufferType>
Producer::PayloadPolicy get_default_payload_policy() {
return Producer::PayloadPolicy::COPY_PAYLOAD;
@@ -669,11 +687,11 @@ void BufferedProducer<BufferType, Allocator>::produce(const MessageBuilder& buil
template <typename BufferType, typename Allocator>
void BufferedProducer<BufferType, Allocator>::sync_produce(const MessageBuilder& builder) {
sync_produce(builder, producer_.get_timeout());
sync_produce(builder, infinite_timeout);
}
template <typename BufferType, typename Allocator>
void BufferedProducer<BufferType, Allocator>::sync_produce(const MessageBuilder& builder,
bool BufferedProducer<BufferType, Allocator>::sync_produce(const MessageBuilder& builder,
std::chrono::milliseconds timeout) {
if (enable_message_retries_) {
//Adding a retry tracker requires copying the builder since
@@ -682,17 +700,25 @@ void BufferedProducer<BufferType, Allocator>::sync_produce(const MessageBuilder&
MessageBuilder builder_clone(builder.clone());
TrackerPtr tracker = add_tracker(SenderType::Sync, builder_clone);
// produce until we succeed or we reach max retry limit
auto endTime = std::chrono::steady_clock::now() + timeout;
do {
tracker->prepare_to_retry();
produce_message(builder_clone);
wait_for_acks(timeout);
//Wait w/o timeout since we must get the ack to avoid a race condition.
//Otherwise retry_again() will block as the producer won't get flushed
//and the delivery callback will never be invoked.
wait_for_acks();
}
while (tracker->retry_again());
while (tracker->retry_again() &&
((timeout == infinite_timeout) ||
(std::chrono::steady_clock::now() >= endTime)));
return !tracker->has_retries_left();
}
else {
// produce once
produce_message(builder);
wait_for_acks(timeout);
return (pending_acks_ == 0);
}
}
@@ -703,12 +729,12 @@ void BufferedProducer<BufferType, Allocator>::produce(const Message& message) {
template <typename BufferType, typename Allocator>
void BufferedProducer<BufferType, Allocator>::async_flush() {
flush(std::chrono::milliseconds::zero(), false);
flush(no_timeout, false);
}
template <typename BufferType, typename Allocator>
void BufferedProducer<BufferType, Allocator>::flush(bool preserve_order) {
flush(producer_.get_timeout(), preserve_order);
flush(infinite_timeout, preserve_order);
}
template <typename BufferType, typename Allocator>
@@ -749,7 +775,8 @@ bool BufferedProducer<BufferType, Allocator>::flush(std::chrono::milliseconds ti
template <typename BufferType, typename Allocator>
void BufferedProducer<BufferType, Allocator>::wait_for_acks() {
wait_for_acks(producer_.get_timeout());
//block until all acks have been received
wait_for_acks(infinite_timeout);
}
template <typename BufferType, typename Allocator>
@@ -773,7 +800,8 @@ bool BufferedProducer<BufferType, Allocator>::wait_for_acks(std::chrono::millise
// calculate remaining time
remaining = timeout - std::chrono::duration_cast<std::chrono::milliseconds>
(std::chrono::high_resolution_clock::now() - start_time);
} while ((pending_acks_ > 0) && (remaining.count() > 0));
} while ((pending_acks_ > 0) &&
((remaining.count() > 0) || (timeout == infinite_timeout)));
return (pending_acks_ == 0);
}