I'm trying to work out how to call to an endpoint that accepts a @Body parameter of Flowable<Integer>, to subscribe it to process the incoming stream (using Micronaut and the RxJava framework). I have this controller in Micronaut:
@Post(uri = "inner")
@ExecuteOn(TaskExecutors.IO)
HttpResponse inner(@Body Flowable<Integer> template){
template.subscribe(new Subscriber<Integer>() {
Subscription subscription
@Override
void onSubscribe(Subscription s) {
subscription = s
subscription.request(1l)
}
@Override
void onNext(Integer integer) {
log.info("inner:onNext called")
log.info("${integer.toString()} - ${System.currentTimeMillis()}")
subscription.request(1l)
}
@Override
void onError(Throwable t) {
log.info("inner:onError called")
t.printStackTrace()
}
@Override
void onComplete() {
log.info("inner:onComplete called")
}
})
ok()
}
Which I'm calling from another endpoint called /outer using the code:
rxStreamingHttpClient.exchangeStream(HttpRequest.POST("/inner", Flowable.fromIterable([1,2,3,4,5]))).subscribe()
So what I'm expecting is that I call the /outer endpoint, which in turn calls the /inner endpoint and feeds it the Integer stream to process. This seems to work, but only intermittently - the /inner endpoint always gets called, but it will often get somewhat through processing the stream and then call OnError an exception of com.fasterxml.jackson.core.io.JsonEOFException: Unexpected end-of-input. However it does sometimes complete successfully. I can't find an example of how to do this - can anyone advise on what I'm doing wrong?
