BewareMyPower commented on code in PR #309:
URL:
https://github.com/apache/pulsar-client-node/pull/309#discussion_r1157505847
##########
src/Consumer.cc:
##########
@@ -82,9 +96,15 @@ void MessageListener(pulsar_consumer_t *rawConsumer,
pulsar_message_t *rawMessag
return;
}
- MessageListenerProxyData *dataPtr = new MessageListenerProxyData(cMessage,
consumer);
+ std::promise<void> promise;
+ std::future<void> future = promise.get_future();
+ MessageListenerProxyData *dataPtr =
+ new MessageListenerProxyData(cMessage, consumer, [&]() {
promise.set_value(); });
listenerCallback->callback.BlockingCall(dataPtr, MessageListenerProxy);
listenerCallback->callback.Release();
+
+ future.wait();
+ delete dataPtr;
Review Comment:
It's better not to use `delete` directly, use `std::unique_ptr`.
##########
src/Consumer.cc:
##########
@@ -55,21 +56,34 @@ void Consumer::Init(Napi::Env env, Napi::Object exports) {
struct MessageListenerProxyData {
std::shared_ptr<pulsar_message_t> cMessage;
Consumer *consumer;
+ std::function<void(void)> callback;
- MessageListenerProxyData(std::shared_ptr<pulsar_message_t> cMessage,
Consumer *consumer)
- : cMessage(cMessage), consumer(consumer) {}
+ MessageListenerProxyData(std::shared_ptr<pulsar_message_t> cMessage,
Consumer *consumer,
+ std::function<void(void)> callback)
+ : cMessage(cMessage), consumer(consumer), callback(callback) {}
};
void MessageListenerProxy(Napi::Env env, Napi::Function jsCallback,
MessageListenerProxyData *data) {
Napi::Object msg = Message::NewInstance({}, data->cMessage);
Consumer *consumer = data->consumer;
- delete data;
Review Comment:
I think we should still delete the data. Replace this line with
`std::unique_ptr<MessageListenerProxyData*> data_guard` is a common used RAII
solution.
##########
src/Consumer.cc:
##########
@@ -82,9 +96,15 @@ void MessageListener(pulsar_consumer_t *rawConsumer,
pulsar_message_t *rawMessag
return;
}
- MessageListenerProxyData *dataPtr = new MessageListenerProxyData(cMessage,
consumer);
+ std::promise<void> promise;
+ std::future<void> future = promise.get_future();
+ MessageListenerProxyData *dataPtr =
+ new MessageListenerProxyData(cMessage, consumer, [&]() {
promise.set_value(); });
Review Comment:
```suggestion
new MessageListenerProxyData(cMessage, consumer, [&promise]() {
promise.set_value(); });
```
Capture the specific value or reference instead of capturing all values or
references.
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