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// Copyright 2015 Google Inc. All rights reserved.
//
// 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.google.devtools.build.lib.worker;
import org.apache.commons.pool2.BaseKeyedPooledObjectFactory;
import org.apache.commons.pool2.PooledObject;
import org.apache.commons.pool2.impl.DefaultPooledObject;
/**
* Factory used by the pool to create / destroy / validate worker processes.
*/
final class WorkerFactory extends BaseKeyedPooledObjectFactory<WorkerKey, Worker> {
@Override
public Worker create(WorkerKey key) throws Exception {
return Worker.create(key);
}
/**
* Use the DefaultPooledObject implementation.
*/
@Override
public PooledObject<Worker> wrap(Worker worker) {
return new DefaultPooledObject<Worker>(worker);
}
/**
* When a worker process is discarded, destroy its process, too.
*/
@Override
public void destroyObject(WorkerKey key, PooledObject<Worker> p) throws Exception {
p.getObject().destroy();
}
/**
* The worker is considered to be valid when its process is still alive.
*/
@Override
public boolean validateObject(WorkerKey key, PooledObject<Worker> p) {
return p.getObject().isAlive();
}
}
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