/*
* Copyright 2012 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.example.common;
import com.linkedin.parseq.Engine;
import com.linkedin.parseq.EngineBuilder;
import com.linkedin.parseq.batching.BatchingSupport;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
/**
* @author Chris Pettitt (cpettitt@linkedin.com)
* @author Jaroslaw Odzga (jodzga@linkedin.com)
*/
public abstract class AbstractExample {
private volatile ScheduledExecutorService _serviceScheduler;
private final BatchingSupport _batchingSupport = new BatchingSupport();
public void runExample() throws Exception {
_serviceScheduler = Executors.newScheduledThreadPool(2);
final int numCores = Runtime.getRuntime().availableProcessors();
final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(numCores + 1);
final EngineBuilder builder = new EngineBuilder().setTaskExecutor(scheduler).setTimerScheduler(scheduler);
customizeEngine(builder);
final Engine engine = builder.build();
try {
doRunExample(engine);
} finally {
engine.shutdown();
scheduler.shutdownNow();
_serviceScheduler.shutdown();
_serviceScheduler = null;
}
}
protected abstract void doRunExample(Engine engine) throws Exception;
protected void customizeEngine(EngineBuilder engineBuilder) {
engineBuilder.setPlanDeactivationListener(_batchingSupport);
}
protected <T> MockService<T> getService() {
return new MockService<T>(_serviceScheduler);
}
protected <T> BatchableMockService<T> getBatchableService() {
BatchableMockService<T> service = new BatchableMockService<>(_serviceScheduler);
_batchingSupport.registerStrategy(service.getStrategy());
return service;
}
}