/* 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 org.activiti.standalone.idgenerator;

import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

import org.activiti.engine.impl.test.ResourceActivitiTestCase;
import org.activiti.engine.task.Task;
import org.activiti.engine.test.Deployment;

/**
 * @author Joram Barrez
 */
public class UuidGeneratorTest extends ResourceActivitiTestCase {
  
  public UuidGeneratorTest() throws Exception {
    super("org/activiti/standalone/idgenerator/uuidgenerator.test.activiti.cfg.xml");
  }
  
  @Deployment
  public void testUuidGeneratorUsage() {
    
    ExecutorService executorService = Executors.newFixedThreadPool(10);
    
    // Start processes
    for (int i=0; i<50; i++) {
      executorService.execute(new Runnable() {
        public void run() {
          try {
            runtimeService.startProcessInstanceByKey("simpleProcess");
          } catch (Exception e) {
            e.printStackTrace();
            fail();
          }
        }
      });
    }
    
    // Complete tasks
    executorService.execute(new Runnable() {
      
      public void run() {
        boolean tasksFound = true;
        while (tasksFound) {
          
          List<Task> tasks = taskService.createTaskQuery().list();
          for (Task task : tasks) {
            taskService.complete(task.getId());
          }
          
          tasksFound = taskService.createTaskQuery().count() > 0;
          
          if (!tasksFound) {
            try {
              Thread.sleep(1500L); // just to be sure
            } catch (InterruptedException e) {
              e.printStackTrace();
            }
            tasksFound = taskService.createTaskQuery().count() > 0;
          }
        }
      }
    });
    
    try {
      executorService.shutdown();
      executorService.awaitTermination(1, TimeUnit.MINUTES);
    } catch (InterruptedException e) {
      e.printStackTrace();
      fail();
    }
    
    assertEquals(50, historyService.createHistoricProcessInstanceQuery().count());
  }
  
}