code: /*
   * Copyright © 2014-2017 EntIT Software LLC, a Micro Focus company (L.P.)
   *
   * 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 io.cloudslang.score.facade.entities;
  
  import io.cloudslang.score.api.ExecutionPlan;
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  
  import java.io.BufferedInputStream;
  import java.io.BufferedOutputStream;
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutputStream;
  import java.util.zip.GZIPInputStream;
  import java.util.zip.GZIPOutputStream;
  
  /**
   * Created by IntelliJ IDEA.
   * User: kravtsov
   * Date: 30/07/12
   * Time: 14:29
   */
  public class ExecutionPlanCompressUtil {
      private static final Logger logger = LogManager.getLogger(ExecutionPlanCompressUtil.class);
  
      /**
       * Gets byte[] that contains serialized object ExecutionPlan + zipped
       * and creates ExecutionPlan from it
       *
       * @param bytes - compressed serialized object of ExecutionPlan
       * @return ExecutionPlan
       */
      public static ExecutionPlan getExecutionPlanFromBytes(byte[] bytes) {
  
          try (ByteArrayInputStream is = new ByteArrayInputStream(bytes);
               BufferedInputStream bis = new BufferedInputStream(is);
               GZIPInputStream gis = new GZIPInputStream(bis);
               BufferedInputStream bis_2 = new BufferedInputStream(gis);
               ObjectInputStream ois = new ObjectInputStream(bis_2);
          ) {
  
              return (ExecutionPlan) ois.readObject();
  
          } catch (IOException | ClassNotFoundException ex) {
              logger.error("Failed to read execution plan from byte[]. Error: ", ex);
              throw new RuntimeException("Failed to read execution plan from byte[]. Error: ", ex);
          }
    }
  
      public static byte[] getBytesFromExecutionPlan(ExecutionPlan executionPlan) {
          ObjectOutputStream oos = null;
          try {
              ByteArrayOutputStream bout = new ByteArrayOutputStream();
              BufferedOutputStream bos = new BufferedOutputStream(bout);
              GZIPOutputStream gzipout = new GZIPOutputStream(bos);
              BufferedOutputStream bos_2 = new BufferedOutputStream(gzipout);
              oos = new ObjectOutputStream(bos_2);
  
              oos.writeObject(executionPlan);
              oos.close();
  
              @SuppressWarnings({"UnnecessaryLocalVariable"})
              byte[] bytes = bout.toByteArray();
              return bytes;
          } catch (IOException ex) {
              logger.error("Failed to serialize execution plan. Error: ", ex);
              throw new RuntimeException("Failed to serialize execution plan. Error: ", ex);
          }
      }
  }
  