Package com.linkedin.parseq.example.composite.classifier

Source Code of com.linkedin.parseq.example.composite.classifier.ClassifierDriver

/*
* 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.composite.classifier;

import com.linkedin.parseq.Engine;
import com.linkedin.parseq.EngineBuilder;
import com.linkedin.parseq.Task;
import com.linkedin.parseq.example.common.ExampleUtil;
import com.linkedin.parseq.example.composite.classifier.client.Client;
import com.linkedin.parseq.example.composite.classifier.client.impl.ClientImpl;

import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;

/**
* @author Chris Pettitt (cpettitt@linkedin.com)
*/
public class ClassifierDriver
{
  public static void main(String[] args) throws InterruptedException
  {
    final long viewerId = 0;

    final Set<Long> unclassified = new HashSet<Long>();
    for (long i = 0; i < 20; i++) {
      unclassified.add(i);
    }

    final ScheduledExecutorService serviceScheduler = Executors.newSingleThreadScheduledExecutor();
    final Client restLiClient = new ClientImpl(serviceScheduler);

    final int numCores = Runtime.getRuntime().availableProcessors();
    final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(numCores + 1);
    final Engine engine = new EngineBuilder()
        .setTaskExecutor(scheduler)
        .setTimerScheduler(scheduler)
        .build();

    final ClassifierPlanFactory classifier = new ClassifierPlanFactory(restLiClient);
    try
    {
      final Task<Map<Long, Classification>> classifications = classifier.classify(viewerId, unclassified);
      engine.run(classifications);
      classifications.await();
      System.out.println(classifications.get());

      ExampleUtil.printTracingResults(classifications);
    }
    finally
    {
      serviceScheduler.shutdownNow();
      engine.shutdown();
      scheduler.shutdownNow();
    }
  }
}
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