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/* 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.engine.impl.asyncexecutor;

import org.activiti.engine.api.internal.Internal;
import org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl;
import org.activiti.engine.impl.persistence.entity.JobEntity;
import org.activiti.engine.runtime.Job;

/**
 *
 */
@Internal
public interface AsyncExecutor {

  /**
   * Starts the Async Executor: jobs will be acquired and executed.
   */
  void start();
  
  /**
   * Stops executing jobs.
   */
  void shutdown();

  /**
   * Offers the provided {@link JobEntity} to this {@link AsyncExecutor} instance
   * to execute. If the offering does not work for some reason, false 
   * will be returned (For example when the job queue is full in the {@link DefaultAsyncJobExecutor}). 
   */
  boolean executeAsyncJob(Job job);
  
  
  /* Getters and Setters */
  
  void setProcessEngineConfiguration(ProcessEngineConfigurationImpl processEngineConfiguration);
  
  ProcessEngineConfigurationImpl getProcessEngineConfiguration();
  
  boolean isAutoActivate();

  void setAutoActivate(boolean isAutoActivate);
  
  boolean isActive();
  
  String getLockOwner();
  
  int getTimerLockTimeInMillis();
  
  void setTimerLockTimeInMillis(int lockTimeInMillis);
  
  int getAsyncJobLockTimeInMillis();
  
  void setAsyncJobLockTimeInMillis(int lockTimeInMillis);
  
  int getDefaultTimerJobAcquireWaitTimeInMillis();
  
  void setDefaultTimerJobAcquireWaitTimeInMillis(int waitTimeInMillis);
  
  int getDefaultAsyncJobAcquireWaitTimeInMillis();
  
  void setDefaultAsyncJobAcquireWaitTimeInMillis(int waitTimeInMillis);
  
  public int getDefaultQueueSizeFullWaitTimeInMillis();

  public void setDefaultQueueSizeFullWaitTimeInMillis(int defaultQueueSizeFullWaitTimeInMillis);
  
  int getMaxAsyncJobsDuePerAcquisition();
  
  void setMaxAsyncJobsDuePerAcquisition(int maxJobs);
  
  int getMaxTimerJobsPerAcquisition();
  
  void setMaxTimerJobsPerAcquisition(int maxJobs);
  
  int getRetryWaitTimeInMillis();
  
  void setRetryWaitTimeInMillis(int retryWaitTimeInMillis);
  
  int getResetExpiredJobsInterval();

  void setResetExpiredJobsInterval(int resetExpiredJobsInterval);
  
  int getResetExpiredJobsPageSize();
  
  void setResetExpiredJobsPageSize(int resetExpiredJobsPageSize);
  
}