@Override
protected void doRequest(long n) {
if (BackpressureUtils.getAndAdd(PENDING_UPDATER, this, n) == 0) {
super.doRequest(n);
if (!tryDrain()) {
requestMissing();
}
} else if (terminated == 1) {
if (tryDrain() && TERMINATED.compareAndSet(this, 1, 2)) {
super.doComplete();
}
}
}
@Override
protected void doCancel() {
if (cancelConsumer != null) {
cancelConsumer.accept(null);
}
super.doCancel();
}
@Override
protected void doError(Throwable throwable) {
if (TERMINATED.compareAndSet(this, 0, 1)) {
tryDrain();
super.doError(throwable);
}
}
@Override
protected void doOnSubscribe(Subscription subscription) {
if ((options & ON_SUBSCRIBE) == ON_SUBSCRIBE && log.isInfoEnabled()) {
log.info("⇩ " + concatId() + "onSubscribe({})", this.subscription);
}
super.doOnSubscribe(subscription);
}
@Override
protected void doCancel() {
if ((options & CANCEL) == CANCEL && log.isInfoEnabled()) {
log.info("↥ " + concatId() + "cancel()");
}
super.doCancel();
}
@Override
protected void doRequest(long n) {
if ((options & REQUEST) == REQUEST && log.isInfoEnabled()) {
log.info("⇡ " + concatId() + "request({})", Long.MAX_VALUE == n ? "unbounded" : n);
}
super.doRequest(n);
}
@Override
protected void doComplete() {
if ((options & ON_COMPLETE) == ON_COMPLETE && log.isInfoEnabled()) {
log.info("↧ " + concatId() + "onComplete()");
}
super.doComplete();
}
@Override
protected void doError(Throwable throwable) {
if ((options & ON_ERROR) == ON_ERROR && log.isErrorEnabled()) {
log.error("↯ " + concatId() + "onError({})", throwable);
}
super.doError(throwable);
}
@Override
protected void doNext(IN in) {
if ((options & ON_NEXT) == ON_NEXT && log.isInfoEnabled()) {
log.info("↓ " + concatId() + "onNext({})", in);
}
super.doNext(in);
}
@Override
protected void doComplete() {
if (TERMINATED.compareAndSet(this, 0, 1)) {
if (tryDrain()) {
super.doComplete();
}
}
}
private void requestMissing() {
if (pendingDemand != Long.MAX_VALUE) {
super.doRequest(1L);
}
}