/**
* Copyright 2016 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 java.util.concurrent.
TimeUnit;
import rx.*;
import rx.
Scheduler.
Worker;
import rx.
Single.
OnSubscribe;
import rx.functions.
Action0;
/**
* Signal the success or error value on the Scheduler's thread.
*
* @param <T> the value type
*/
public final class
SingleDelay<T> implements
Single.
OnSubscribe<T> {
final
Single.
OnSubscribe<T>
source;
final long
delay;
final
TimeUnit unit;
final
Scheduler scheduler;
public
SingleDelay(
OnSubscribe<T>
source, long
delay,
TimeUnit unit,
Scheduler scheduler) {
this.
source =
source;
this.
scheduler =
scheduler;
this.
delay =
delay;
this.
unit =
unit;
}
@
Override
public void
call(
SingleSubscriber<? super T>
t) {
Worker w =
scheduler.
createWorker();
ObserveOnSingleSubscriber<T>
parent = new
ObserveOnSingleSubscriber<T>(
t,
w,
delay,
unit);
t.
add(
w);
t.
add(
parent);
source.
call(
parent);
}
static final class
ObserveOnSingleSubscriber<T> extends
SingleSubscriber<T>
implements
Action0 {
final
SingleSubscriber<? super T>
actual;
final
Worker w;
final long
delay;
final
TimeUnit unit;
T
value;
Throwable error;
public
ObserveOnSingleSubscriber(
SingleSubscriber<? super T>
actual,
Worker w, long
delay,
TimeUnit unit) {
this.
actual =
actual;
this.
w =
w;
this.
delay =
delay;
this.
unit =
unit;
}
@
Override
public void
onSuccess(T
value) {
this.
value =
value;
w.
schedule(this,
delay,
unit);
}
@
Override
public void
onError(
Throwable error) {
this.
error =
error;
w.
schedule(this,
delay,
unit);
}
@
Override
public void
call() {
try {
Throwable ex =
error;
if (
ex != null) {
error = null;
actual.
onError(
ex);
} else {
T
v =
value;
value = null;
actual.
onSuccess(
v);
}
} finally {
w.
unsubscribe();
}
}
}
}