dev.ikm.tinkar.provider.executor.ExecutorProviderController Maven / Gradle / Ivy
/*
* Copyright © 2015 Integrated Knowledge Management ([email protected])
*
* 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 dev.ikm.tinkar.provider.executor;
import com.google.auto.service.AutoService;
import dev.ikm.tinkar.common.service.CachingService;
import dev.ikm.tinkar.common.service.ExecutorController;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.atomic.AtomicReference;
@AutoService({ExecutorController.class})
public class ExecutorProviderController implements ExecutorController {
private static final Logger LOG = LoggerFactory.getLogger(ExecutorProviderController.class);
private static AtomicReference providerReference = new AtomicReference<>();
@Override
public ExecutorProvider create() {
if (providerReference.get() == null) {
providerReference.updateAndGet(executorProvider -> {
if (executorProvider != null) {
return executorProvider;
}
return new ExecutorProvider();
});
providerReference.get().start();
}
return providerReference.get();
}
@Override
public void stop() {
providerReference.updateAndGet(executorProvider -> {
if (executorProvider != null) {
executorProvider.stop();
}
return null;
});
}
@AutoService(CachingService.class)
public static class CacheProvider implements CachingService {
@Override
public void reset() {
providerReference.updateAndGet(executorProvider -> {
if (executorProvider != null) {
executorProvider.stop();
}
return null;
});
}
}
}