code: /*
   * 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.skywalking.oap.server.storage.plugin.jdbc.postgresql;
  
  import org.apache.skywalking.oap.server.core.storage.model.ModelInstaller;
  import org.apache.skywalking.oap.server.core.storage.query.IAggregationQueryDAO;
  import org.apache.skywalking.oap.server.core.storage.query.IMetricsQueryDAO;
  import org.apache.skywalking.oap.server.library.module.ModuleStartException;
  import org.apache.skywalking.oap.server.library.module.ServiceNotProvidedException;
  import org.apache.skywalking.oap.server.storage.plugin.jdbc.common.JDBCStorageProvider;
  import org.apache.skywalking.oap.server.storage.plugin.jdbc.postgresql.dao.PostgreSQLAggregationQueryDAO;
  import org.apache.skywalking.oap.server.storage.plugin.jdbc.postgresql.dao.PostgreSQLMetricsQueryDAO;
  
  /**
   * PostgreSQL storage enhanced and came from MySQLStorageProvider to support PostgreSQL.
   */
  public class PostgreSQLStorageProvider extends JDBCStorageProvider {
      @Override
      public String name() {
          return "postgresql";
      }
  
      @Override
      protected ModelInstaller createModelInstaller() {
          return new PostgreSQLTableInstaller(jdbcClient, getManager());
      }
  
      @Override
      public void prepare() throws ServiceNotProvidedException, ModuleStartException {
          super.prepare();
  
          // Override service implementations.
  
          this.registerServiceImplementation(
              IMetricsQueryDAO.class,
              new PostgreSQLMetricsQueryDAO(jdbcClient, tableHelper));
          this.registerServiceImplementation(
              IAggregationQueryDAO.class,
              new PostgreSQLAggregationQueryDAO(jdbcClient, tableHelper));
      }
  }
  