shibd commented on code in PR #309:
URL:
https://github.com/apache/pulsar-client-node/pull/309#discussion_r1160741629
##########
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;
// `consumer` might be null in certain cases, segmentation fault might
happend without this null check. We
// need to handle this rare case in future.
if (consumer) {
- jsCallback.Call({msg, consumer->Value()});
+ Napi::Value ret = jsCallback.Call({msg, consumer->Value()});
Review Comment:
> The root cause is that the message listener calls the user callback in an
asynchronous way. It will not wait for the result from the user callback
I have a question, How did you know that this function returned
`Napi::Promise`?
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