/*
    * 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.sharding.route.engine.type.broadcast;
  
  import lombok.RequiredArgsConstructor;
  import org.apache.shardingsphere.infra.metadata.database.resource.ResourceMetaData;
  import org.apache.shardingsphere.infra.route.context.RouteContext;
  import org.apache.shardingsphere.infra.route.context.RouteMapper;
  import org.apache.shardingsphere.infra.route.context.RouteUnit;
  import org.apache.shardingsphere.sharding.route.engine.type.ShardingRouteEngine;
  import org.apache.shardingsphere.sharding.rule.ShardingRule;
  
  import java.util.Collections;
  
  /**
   * Sharding broadcast routing engine for database instance.
   */
  @RequiredArgsConstructor
  public final class ShardingInstanceBroadcastRoutingEngine implements ShardingRouteEngine {
      
      private final ResourceMetaData resourceMetaData;
      
      @Override
      public RouteContext route(final ShardingRule shardingRule) {
          RouteContext result = new RouteContext();
          for (String each : shardingRule.getDataSourceNames()) {
              if (resourceMetaData.getAllInstanceDataSourceNames().contains(each)) {
                  result.getRouteUnits().add(new RouteUnit(new RouteMapper(each, each), Collections.emptyList()));
              }
          }
          return result;
      }
  }