/*
* Copyright 2013-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.cloud.netflix.rx;
import org.springframework.web.context.request.async.DeferredResult;
import rx.Observable;
import rx.Subscriber;
import rx.Subscription;
/**
* A subscriber that sets the single value produced by the {@link Observable} on the {@link DeferredResult}.
*
* @author Jakub Narloch
* @see DeferredResult
*/
class DeferredResultSubscriber<T> extends Subscriber<T> implements Runnable {
private final DeferredResult<T> deferredResult;
private final Subscription subscription;
private boolean completed;
public DeferredResultSubscriber(Observable<T> observable, DeferredResult<T> deferredResult) {
this.deferredResult = deferredResult;
this.deferredResult.onTimeout(this);
this.deferredResult.onCompletion(this);
this.subscription = observable.subscribe(this);
}
@Override
public void onNext(T value) {
if (!completed) {
deferredResult.setResult(value);
}
}
@Override
public void onError(Throwable e) {
deferredResult.setErrorResult(e);
}
@Override
public void onCompleted() {
completed = true;
}
@Override
public void run() {
this.subscription.unsubscribe();
}
}