content: /*
   * 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 com.datastax.oss.driver.internal.core.config.map;
  
  import com.datastax.oss.driver.api.core.config.DriverConfig;
  import com.datastax.oss.driver.api.core.config.DriverExecutionProfile;
  import com.datastax.oss.driver.api.core.config.DriverOption;
  import edu.umd.cs.findbugs.annotations.NonNull;
  import java.util.Collections;
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  /** @see MapBasedDriverConfigLoader */
  public class MapBasedDriverConfig implements DriverConfig {
  
    private final Map<String, Map<DriverOption, Object>> optionsMap;
    private final Map<String, MapBasedDriverExecutionProfile> profiles = new ConcurrentHashMap<>();
  
    public MapBasedDriverConfig(Map<String, Map<DriverOption, Object>> optionsMap) {
      this.optionsMap = optionsMap;
      if (!optionsMap.containsKey(DriverExecutionProfile.DEFAULT_NAME)) {
        throw new IllegalArgumentException(
            "The options map must contain a profile named " + DriverExecutionProfile.DEFAULT_NAME);
      }
      createMissingProfiles();
    }
  
    @NonNull
    @Override
    public DriverExecutionProfile getProfile(@NonNull String profileName) {
      return profiles.computeIfAbsent(profileName, this::newProfile);
    }
  
    @NonNull
    @Override
    public Map<String, ? extends DriverExecutionProfile> getProfiles() {
      // Refresh in case profiles were added to the backing map
      createMissingProfiles();
      return Collections.unmodifiableMap(profiles);
    }
  
    private void createMissingProfiles() {
      for (Map.Entry<String, Map<DriverOption, Object>> entry : optionsMap.entrySet()) {
        String profileName = entry.getKey();
        if (!profiles.containsKey(profileName)) {
          profiles.put(profileName, newProfile(profileName));
        }
      }
    }
  
    private MapBasedDriverExecutionProfile newProfile(String profileName) {
      return new MapBasedDriverExecutionProfile(optionsMap, profileName);
    }
  }
  