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.orchestrator.services;
  
  import io.cloudslang.orchestrator.entities.SuspendedExecution;
  import io.cloudslang.orchestrator.repositories.FinishedBranchRepository;
  import io.cloudslang.orchestrator.repositories.SuspendedExecutionsRepository;
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.data.domain.PageRequest;
  import org.springframework.stereotype.Component;
  import org.springframework.transaction.annotation.Propagation;
  import org.springframework.transaction.annotation.Transactional;
  
  import java.util.List;
  
  
  import static io.cloudslang.orchestrator.enums.SuspendedExecutionReason.MULTI_INSTANCE;
  import static io.cloudslang.orchestrator.enums.SuspendedExecutionReason.NON_BLOCKING;
  import static io.cloudslang.orchestrator.enums.SuspendedExecutionReason.PARALLEL;
  import static io.cloudslang.orchestrator.enums.SuspendedExecutionReason.PARALLEL_LOOP;
  import static java.util.EnumSet.of;
  import static org.springframework.util.CollectionUtils.isEmpty;
  import static java.util.stream.Collectors.toSet;
  
  
  @Component
  public class SuspendedExecutionCleanerServiceImpl implements SuspendedExecutionCleanerService {
  
      private final int MAX_BULK_SIZE = Integer.getInteger("suspendedexecution.job.bulk.size", 200);
      private final int SPLIT_SIZE = 200;
  
      @Autowired
      private SuspendedExecutionsRepository suspendedExecutionsRepository;
  
      @Autowired
      private FinishedBranchRepository finishedBranchRepository;
  
      private static final Logger logger = LogManager.getLogger(SuspendedExecutionCleanerServiceImpl.class);
  
      @Override
      @Transactional(propagation = Propagation.REQUIRES_NEW)
      public void cleanupSuspendedExecutions() {
          try {
              cleanupSuspendedExecutions(MAX_BULK_SIZE);
          } catch (Exception e) {
              logger.error("suspended execution cleaner job failed!", e);
          }
      }
  
      private void cleanupSuspendedExecutions(Integer bulkSize) {
          for (int i = 1; i <= bulkSize / SPLIT_SIZE; i++) {
              PageRequest pageRequest = PageRequest.of(0, SPLIT_SIZE);
              List<SuspendedExecution> toBeDeleted = suspendedExecutionsRepository.findFinishedSuspendedExecutions(
                      of(PARALLEL, NON_BLOCKING, PARALLEL_LOOP, MULTI_INSTANCE), pageRequest);
              if (!isEmpty(toBeDeleted)) {
                  suspendedExecutionsRepository.deleteByIds(toBeDeleted.stream().map(SuspendedExecution::getExecutionId)
                          .collect(toSet()));
                  finishedBranchRepository.deleteByIds(toBeDeleted.stream().map(x -> Long.valueOf(x.getExecutionId()))
                          .collect(toSet()));
              }
          }
      }
  }
  
  