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 org.apache.ambari.server.metadata;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.ambari.server.Role;
  import org.apache.ambari.server.state.Service;
  
  import com.google.inject.Singleton;
  
  /**
   * Contains metadata about actions supported by services
   */
  @Singleton
  public class ActionMetadata {
    private final Map<String, List<String>> serviceActions = new HashMap<>();
    private final Map<String, String> serviceClients = new HashMap<>();
    private final Map<String, String> serviceCheckActions =
      new HashMap<>();
    private final List<String> defaultHostComponentCommands = new ArrayList<>();
    public final static String SERVICE_CHECK_POSTFIX = "_SERVICE_CHECK";
  
    private static final Map<String, String> SERVICE_CHECKS;
    static {
        Map<String, String> serviceChecks = new HashMap<>();
  
        serviceChecks.put(Service.Type.ZOOKEEPER.toString(), "ZOOKEEPER_QUORUM_SERVICE_CHECK");
  
        SERVICE_CHECKS = Collections.unmodifiableMap(serviceChecks);
    }
  
    public ActionMetadata() {
      fillServiceClients();
      fillHostComponentCommands();
    }
  
    private void fillHostComponentCommands() {
      //Standart commands for any host component
      defaultHostComponentCommands.add("RESTART");
      defaultHostComponentCommands.add("START");
      defaultHostComponentCommands.add("STOP");
      defaultHostComponentCommands.add("INSTALL");
      defaultHostComponentCommands.add("CONFIGURE");
      defaultHostComponentCommands.add("CONFIGURE_FUNCTION");
      defaultHostComponentCommands.add("DISABLE_SECURITY");
      defaultHostComponentCommands.add("RECONFIGURE");
    }
  
    private void fillServiceClients() {
      serviceClients.put("hdfs", Role.HDFS_CLIENT.toString());
      serviceClients.put("glusterfs", Role.GLUSTERFS_CLIENT.toString());
      serviceClients.put("hbase", Role.HBASE_CLIENT.toString());
      serviceClients.put("mapreduce", Role.MAPREDUCE_CLIENT.toString());
      serviceClients.put("zookeeper", Role.ZOOKEEPER_CLIENT.toString());
      serviceClients.put("hive", Role.HIVE_CLIENT.toString());
      serviceClients.put("hcat", Role.HCAT.toString());
      serviceClients.put("oozie", Role.OOZIE_CLIENT.toString());
      serviceClients.put("pig", Role.PIG.toString());
      serviceClients.put("mahout", Role.MAHOUT.toString());
      serviceClients.put("sqoop", Role.SQOOP.toString());
      serviceClients.put("yarn", Role.YARN_CLIENT.toString());
      serviceClients.put("kerberos", Role.KERBEROS_CLIENT.toString());
      serviceClients.put("accumulo", Role.ACCUMULO_CLIENT.toString());
    }
  
    public List<String> getActions(String serviceName) {
      List<String> result = serviceActions.get(serviceName.toLowerCase());
      if (result != null) {
        return result;
      } else {
        return Collections.emptyList();
      }
    }
  
    public String getClient(String serviceName) {
      return serviceClients.get(serviceName.toLowerCase());
    }
  
    public String getServiceCheckAction(String serviceName) {
      return serviceCheckActions.get(serviceName.toLowerCase());
    }
  
    /**
     * Get service name by service check action name
     * @param serviceCheckAction service check action name like ZOOKEEPER_QUORUM_SERVICE_CHECK
     * @return service name (capitalized) or null if not found
     */
    public String getServiceNameByServiceCheckAction(String serviceCheckAction) {
      for (Map.Entry<String, String> entry : serviceCheckActions.entrySet()) {
        if (entry.getValue().equals(serviceCheckAction)) {
          return entry.getKey().toUpperCase();
        }
      }
      return null;
    }
  
    public void addServiceCheckAction(String serviceName) {
      String actionName = serviceName + SERVICE_CHECK_POSTFIX;
  
      if(SERVICE_CHECKS.containsKey(serviceName)) {
        actionName = SERVICE_CHECKS.get(serviceName);
      }
  
      serviceCheckActions.put(serviceName.toLowerCase(), actionName);
      serviceActions.put(serviceName.toLowerCase(), Arrays.asList(actionName));
    }
  
    public boolean isDefaultHostComponentCommand(String command) {
      if (command != null && defaultHostComponentCommands.contains(command)) {
        return true;
      }
      return false;
    }
  }
  