/**
* @warn javadoc description missing
* @warn param producer not described
* @param producer
*/
public void setProducer(Producer producer) {
long toRequest;
boolean setProducer = false;
synchronized (this) {
toRequest = requested;
p = producer;
if (op != null) {
// middle operator ... we pass thru unless a request has been made
if (toRequest == Long.MIN_VALUE) {
// we pass-thru to the next producer as nothing has been requested
setProducer = true;
}
}
}
// do after releasing lock
if (setProducer) {
op.setProducer(p);
} else {
// we execute the request with whatever has been requested (or Long.MAX_VALUE)
if (toRequest == Long.MIN_VALUE) {
p.request(Long.MAX_VALUE);
} else {
p.request(toRequest);
}
}
}
@Test
public void testRequestFromDecoupledOperatorThatRequestsN() {
Subscriber<String> s = new TestSubscriber<String>();
final AtomicLong innerR = new AtomicLong();
Operator<String, String> o =
new Operator<String, String>() {
@Override
public Subscriber<? super String> call(Subscriber<? super String> child) {
// we want to decouple the chain so set our own Producer on the child instead of it
// coming from the parent
child.setProducer(
new Producer() {
@Override
public void request(long n) {
innerR.set(n);
}
});
Subscriber<String> as =
new Subscriber<String>() {
@Override
public void onCompleted() {}
@Override
public void onError(Throwable e) {}
@Override
public void onNext(String t) {}
};
// we request 99 up to the parent
as.request(99);
return as;
}
};
s.request(10);
Subscriber<? super String> ns = o.call(s);
final AtomicLong r = new AtomicLong();
// set set the producer at the top of the chain (ns) and it should flow through the operator to
// the (s) subscriber
// and then it should request up with the value set on the final Subscriber (s)
ns.setProducer(
new Producer() {
@Override
public void request(long n) {
r.set(n);
}
});
assertEquals(99, r.get());
assertEquals(10, innerR.get());
}
@Override
public Subscriber<? super Observable<? extends T>> call(Subscriber<? super T> child) {
final SerializedSubscriber<T> s = new SerializedSubscriber<T>(child);
final CompositeSubscription csub = new CompositeSubscription();
child.add(csub);
SourceSubscriber<T> ssub = new SourceSubscriber<T>(maxConcurrency, s, csub);
child.setProducer(new MergeMaxConcurrentProducer<T>(ssub));
return ssub;
}
/** Should request -1 for infinite */
@Test
public void testRequestFromFinalSubscribeWithoutRequestValue() {
Subscriber<String> s = new TestSubscriber<String>();
final AtomicLong r = new AtomicLong();
s.setProducer(
new Producer() {
@Override
public void request(long n) {
r.set(n);
}
});
assertEquals(Long.MAX_VALUE, r.get());
}
@Override
public Subscriber<? super T> call(final Subscriber<? super T> child) {
final ParentSubscriber parent = new ParentSubscriber(child);
child.add(parent); // don't unsubscribe downstream
child.setProducer(
new Producer() {
@Override
public void request(long n) {
parent.downstreamRequest(n);
}
});
return parent;
}
SwitchSubscriber(Subscriber<? super T> child) {
serializedChild = new SerializedSubscriber<T>(child);
arbiter = new ProducerArbiter();
ssub = new SerialSubscription();
child.add(ssub);
child.setProducer(
new Producer() {
@Override
public void request(long n) {
if (n > 0) {
arbiter.request(n);
}
}
});
}
@Test
public void testRequestFromDecoupledOperator() {
Subscriber<String> s = new TestSubscriber<String>();
Operator<String, String> o =
new Operator<String, String>() {
@Override
public Subscriber<? super String> call(Subscriber<? super String> s) {
return new Subscriber<String>() {
@Override
public void onCompleted() {}
@Override
public void onError(Throwable e) {}
@Override
public void onNext(String t) {}
};
}
};
s.request(10);
Subscriber<? super String> ns = o.call(s);
final AtomicLong r = new AtomicLong();
// set set the producer at the top of the chain (ns) and it should flow through the operator to
// the (s) subscriber
// and then it should request up with the value set on the final Subscriber (s)
ns.setProducer(
new Producer() {
@Override
public void request(long n) {
r.set(n);
}
});
// this will be Long.MAX_VALUE because it is decoupled and nothing requested on the Operator
// subscriber
assertEquals(Long.MAX_VALUE, r.get());
}
@Override
public void call(Subscriber<? super T> s) {
s.setProducer(new ScalarAsyncProducer<T>(s, value, onSchedule));
}