/*
* Copyright 2015 LinkedIn, 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 com.linkedin.parseq;
import static com.linkedin.parseq.function.Tuples.tuple;
import com.linkedin.parseq.function.Tuple3;
import com.linkedin.parseq.internal.InternalUtil;
import com.linkedin.parseq.promise.Promise;
import com.linkedin.parseq.promise.Promises;
import com.linkedin.parseq.promise.SettablePromise;
public class Par3Task<T1, T2, T3> extends BaseTask<Tuple3<T1, T2, T3>> implements Tuple3Task<T1, T2, T3> {
private final Tuple3<Task<T1>, Task<T2>, Task<T3>> _tasks;
public Par3Task(final String name, Task<T1> task1, Task<T2> task2, Task<T3> task3) {
super(name);
_tasks = tuple(task1, task2, task3);
}
@Override
protected Promise<Tuple3<T1, T2, T3>> run(final Context context) throws Exception {
final SettablePromise<Tuple3<T1, T2, T3>> result = Promises.settable();
InternalUtil.fastFailAfter(p -> {
if (p.isFailed()) {
result.fail(p.getError());
} else {
result.done(tuple(_tasks._1().get(),
_tasks._2().get(),
_tasks._3().get()));
}
},
_tasks._1(),
_tasks._2(),
_tasks._3());
_tasks.forEach(t -> context.run((Task<?>)t));
return result;
}
}