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/**
* Copyright 2014 Netflix, Inc.
*
* 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 rx.internal.operators;
import rx.*;
import rx.Observable.Operator;
import rx.schedulers.TimeInterval;
/**
* Records the time interval between consecutive elements in an observable sequence.
* @param the value type
*/
public final class OperatorTimeInterval implements Operator, T> {
final Scheduler scheduler;
public OperatorTimeInterval(Scheduler scheduler) {
this.scheduler = scheduler;
}
@Override
public Subscriber call(final Subscriber> subscriber) {
return new Subscriber(subscriber) {
// The beginning time is the time when the observer subscribes.
private long lastTimestamp = scheduler.now();
@Override
public void onNext(T args) {
long nowTimestamp = scheduler.now();
subscriber.onNext(new TimeInterval(nowTimestamp - lastTimestamp, args));
lastTimestamp = nowTimestamp;
}
@Override
public void onCompleted() {
subscriber.onCompleted();
}
@Override
public void onError(Throwable e) {
subscriber.onError(e);
}
};
}
}