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    • com.github.netty.protocol.nrpc.RpcClientRxjava3Observable Maven / Gradle / Ivy

    package com.github.netty.protocol.nrpc;

import io.reactivex.rxjava3.annotations.NonNull;
import io.reactivex.rxjava3.core.Observable;
import io.reactivex.rxjava3.core.Observer;
import io.reactivex.rxjava3.disposables.Disposable;
import org.reactivestreams.Subscriber;
import org.reactivestreams.Subscription;

/**
 * support rxjava3 Observable async response.
 *
 * @author wangzihao
 * 2020/05/17/019
 */
public class RpcClientRxjava3Observable extends Observable {
    private static final Disposable EMPTY_DISPOSABLE = new Disposable() {
        @Override
        public void dispose() {
            // deliberately no-op
        }

        @Override
        public boolean isDisposed() {
            return true;
        }
    };
    private final RpcClientReactivePublisher source;

    RpcClientRxjava3Observable(RpcClientReactivePublisher source) {
        this.source = source;
    }

    @Override
    protected void subscribeActual(@NonNull Observer observer) {
        source.subscribe(new SubscriberAdapter(observer, EMPTY_DISPOSABLE));
    }

    private static class SubscriberAdapter implements Subscriber {
        private final Observer observer;
        private final Disposable disposable;

        private SubscriberAdapter(Observer observer, Disposable disposable) {
            this.observer = observer;
            this.disposable = disposable;
        }

        @Override
        public void onSubscribe(Subscription s) {
            s.request(1);
            observer.onSubscribe(disposable);
        }

        @Override
        public void onNext(Object o) {
            observer.onNext(o);
        }

        @Override
        public void onError(Throwable t) {
            observer.onError(t);
        }

        @Override
        public void onComplete() {
            observer.onComplete();
        }
    }
}
    
    
    
    

    




    
    
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