content: /*
   *                         Vortex OpenSplice
   *
   *   This software and documentation are Copyright 2006 to TO_YEAR ADLINK
   *   Technology Limited, its affiliated companies and licensors. 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.
   *
   */
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.HashSet;
  import java.util.List;
  
  import org.omg.dds.core.ServiceEnvironment;
  import org.omg.dds.core.policy.Durability;
  import org.omg.dds.core.policy.Partition;
  import org.omg.dds.core.policy.PolicyFactory;
  import org.omg.dds.core.policy.Reliability;
  import org.omg.dds.core.status.Status;
  import org.omg.dds.domain.DomainParticipant;
  import org.omg.dds.domain.DomainParticipantFactory;
  import org.omg.dds.sub.DataReader;
  import org.omg.dds.sub.DataReaderQos;
  import org.omg.dds.sub.Sample;
  import org.omg.dds.sub.Subscriber;
  import org.omg.dds.sub.SubscriberQos;
  import org.omg.dds.topic.Topic;
  import org.omg.dds.topic.TopicQos;
  
  import LifecycleData.*;
  
  
  public class LifecycleDataSubscriber {
  	static String sSampleState[] = { "READ_SAMPLE_STATE",
  			"NOT_READ_SAMPLE_STATE" };
  	static String sViewState[] = { "NEW_VIEW_STATE", "NOT_NEW_VIEW_STATE" };
  	static String sInstanceState[] = { "ALIVE_INSTANCE_STATE",
  			"NOT_ALIVE_DISPOSED_INSTANCE_STATE",
  			"NOT_ALIVE_NO_WRITERS_INSTANCE_STATE" };
  
  	static int index(int i) {
  		int j = (int) (Math.log10(i) / Math.log10(2));
  		return j;
  	}
  
  	static String partitionName = "Lifecycle example";
  
  	public static void main(String[] args) {
  
  	    try {
              System.setProperty(
                        ServiceEnvironment.IMPLEMENTATION_CLASS_NAME_PROPERTY,
                        "org.opensplice.dds.core.OsplServiceEnvironment");
              ServiceEnvironment env = ServiceEnvironment
                        .createInstance(LifecycleDataSubscriber.class.getClassLoader());
  
              DomainParticipantFactory dpf = DomainParticipantFactory.getInstance(env);
  
              // create Domain Participant
              DomainParticipant participant = dpf.createParticipant();
  
              // create Topic with reliable and transient qos
              PolicyFactory policyFactory = env.getSPI().getPolicyFactory();
              Reliability reliable = policyFactory.Reliability().withReliable();
              Durability durability = policyFactory.Durability().withTransient();
              TopicQos topicQos = participant.getDefaultTopicQos().withPolicies(reliable,durability);
              Collection<Class<? extends Status>> status = new HashSet<Class<? extends Status>>();
              Topic<Msg> topic = participant.createTopic("Lifecycle_Msg", Msg.class,topicQos, null, status);
  
              // create Subscriber with partition qos
              Partition partition = policyFactory.Partition().withName(partitionName);
              SubscriberQos subQos = participant.getDefaultSubscriberQos().withPolicy(partition);
              Subscriber sub = participant.createSubscriber(subQos);
  
              DataReaderQos drQos = sub.copyFromTopicQos(sub.getDefaultDataReaderQos(),topic.getQos());
              DataReader<Msg> reader = sub.createDataReader(topic, drQos);
  
      		boolean closed = false;
      		int nbIter = 1;
      		int nbIterMax = 100;
      		List<Sample<Msg>> samples = new ArrayList<Sample<Msg>>();
  
      		while ((!closed) && (nbIter < nbIterMax)){
      			reader.read(samples);
      			for (Sample<Msg> sample : samples) {
      			    Msg msg = sample.getData();
      			    if (msg != null) {
           				System.out.println('\n' + "Message : " + msg.message);
          				System.out.println("writerStates : " + msg.writerStates);
          				System.out.println("valid_data : 1");
          				System.out.println("sample_state:"+ sSampleState[index(sample.getSampleState().value)]
          						  + "-view_state:" + sViewState[index(sample.getViewState().value)]
          						  + "-instance_state:" + sInstanceState[index(sample.getInstanceState().value)]);
          				try {
          					Thread.sleep(200);
          				} catch (InterruptedException e) {
          					e.printStackTrace();
          				}
          				closed = (msg.writerStates.equals("STOPPING_SUBSCRIBER"));
      			    }
      			}
      			try {
      				Thread.sleep(20);
      			} catch (InterruptedException e) {
      				e.printStackTrace();
      			}
      			nbIter++;
      		}
      		System.out.println("=== [Subscriber] stopping after " + nbIter + "iterations - closed = " + closed);
      		if ( nbIter == nbIterMax) System.out.println("*** Error : max " + nbIterMax +   "iterations reached");
  
      		// cleanup
      		participant.close();
  	    } catch(Exception e) {
              System.out.println("Error occured: " + e.getMessage());
              e.printStackTrace();
          }
  	}
  }
  