/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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.apache.shardingsphere.data.pipeline.core.listener;
  
  import lombok.extern.slf4j.Slf4j;
  import org.apache.shardingsphere.elasticjob.infra.listener.ElasticJobListener;
  import org.apache.shardingsphere.elasticjob.infra.listener.ShardingContexts;
  
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  /**
   * Pipeline elastic job listener.
   */
  @Slf4j
  public final class PipelineElasticJobListener implements ElasticJobListener {
      
      // TODO ElasticJobListenerFactory.createListener return new class instance, it's the reason why static variables
      private static final Map<String, Long> RUNNING_JOBS = new ConcurrentHashMap<>();
      
      @Override
      public void beforeJobExecuted(final ShardingContexts shardingContexts) {
          if (RUNNING_JOBS.containsKey(shardingContexts.getJobName())) {
              log.warn("{} already exists", shardingContexts.getJobName());
          }
          RUNNING_JOBS.put(shardingContexts.getJobName(), System.currentTimeMillis());
      }
      
      @Override
      public void afterJobExecuted(final ShardingContexts shardingContexts) {
          log.info("After {} job execute ", shardingContexts.getJobName());
          RUNNING_JOBS.remove(shardingContexts.getJobName());
      }
      
      /**
       * Is job running.
       *
       * @param jobId job id
       * @return true if job is running otherwise false
       */
      public boolean isJobRunning(final String jobId) {
          return RUNNING_JOBS.containsKey(jobId);
      }
      
      @Override
      public String getType() {
          return PipelineElasticJobListener.class.getName();
      }
  }