org.rapidoid.worker.WorkerActivity Maven / Gradle / Ivy
package org.rapidoid.worker;
import org.rapidoid.activity.AbstractThreadActivity;
import org.rapidoid.lambda.Mapper;
import org.rapidoid.util.U;
/*
* #%L
* rapidoid-worker
* %%
* Copyright (C) 2014 Nikolche Mihajlovski
* %%
* 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.
* #L%
*/
public class WorkerActivity extends AbstractThreadActivity> implements Worker {
private final WorkerQueue input;
private final WorkerQueue output;
private final Mapper mapper;
public WorkerActivity(String id, WorkerQueue input, WorkerQueue output, Mapper mapper) {
super("worker-" + id);
this.input = input;
this.output = output;
this.mapper = mapper;
}
@Override
public boolean enqueue(IN task, boolean blocking) {
if (blocking) {
input.put(task);
return true;
} else {
return input.queue.offer(task);
}
}
@Override
public int pendingTasksCount() {
return input.queue.size();
}
@Override
public int pendingResultsCount() {
return output.queue.size();
}
@Override
public OUT nextResult(boolean blocking) {
if (blocking) {
return output.take();
} else {
return output.queue.poll();
}
}
@Override
protected void loop() {
IN task = input.take();
U.notNullAll(task);
OUT result = U.eval(mapper, task);
U.notNull(result, "worker mapper result");
output.put(result);
}
}