/*
    * 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.metadata;
  
  import com.google.common.base.Strings;
  import org.apache.shardingsphere.data.pipeline.core.context.PipelineContextKey;
  import org.apache.shardingsphere.data.pipeline.core.job.api.PipelineAPIFactory;
  import org.apache.shardingsphere.infra.datasource.pool.props.domain.DataSourcePoolProperties;
  import org.apache.shardingsphere.infra.util.yaml.YamlEngine;
  import org.apache.shardingsphere.infra.yaml.config.swapper.resource.YamlDataSourceConfigurationSwapper;
  
  import java.util.Collections;
  import java.util.LinkedHashMap;
  import java.util.Map;
  import java.util.Map.Entry;
  
  /**
   * Pipeline data source persist service.
   */
  public final class PipelineDataSourcePersistService implements PipelineMetaDataPersistService<Map<String, DataSourcePoolProperties>> {
      
      private final YamlDataSourceConfigurationSwapper swapper = new YamlDataSourceConfigurationSwapper();
      
      @Override
      @SuppressWarnings("unchecked")
      public Map<String, DataSourcePoolProperties> load(final PipelineContextKey contextKey, final String jobType) {
          String dataSourcesProps = PipelineAPIFactory.getPipelineGovernanceFacade(contextKey).getMetaDataFacade().getDataSource().load(jobType);
          if (Strings.isNullOrEmpty(dataSourcesProps)) {
              return Collections.emptyMap();
          }
          Map<String, Map<String, Object>> yamlDataSources = YamlEngine.unmarshal(dataSourcesProps, Map.class);
          Map<String, DataSourcePoolProperties> result = new LinkedHashMap<>(yamlDataSources.size(), 1F);
          yamlDataSources.forEach((key, value) -> result.put(key, swapper.swapToDataSourcePoolProperties(value)));
          return result;
      }
      
      @Override
      public void persist(final PipelineContextKey contextKey, final String jobType, final Map<String, DataSourcePoolProperties> propsMap) {
          Map<String, Map<String, Object>> dataSourceMap = new LinkedHashMap<>(propsMap.size(), 1F);
          for (Entry<String, DataSourcePoolProperties> entry : propsMap.entrySet()) {
              dataSourceMap.put(entry.getKey(), swapper.swapToMap(entry.getValue()));
          }
          PipelineAPIFactory.getPipelineGovernanceFacade(contextKey).getMetaDataFacade().getDataSource().persist(jobType, YamlEngine.marshal(dataSourceMap));
      }
  }