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.agent;
  
  import java.util.List;
  import java.util.Map;
  
  import org.apache.ambari.server.AmbariException;
  import org.apache.ambari.server.state.Cluster;
  import org.apache.ambari.server.state.ConfigHelper;
  import org.apache.ambari.server.state.alert.AlertDefinition;
  import org.apache.ambari.server.state.alert.AlertDefinitionHash;
  
  import com.fasterxml.jackson.annotation.JsonProperty;
  import com.google.gson.annotations.SerializedName;
  
  /**
   * The {@link AlertDefinitionCommand} class is used to encapsulate the
   * {@link AlertDefinition}s that will be returned to an agent given a requested
   * hash.
   * <p/>
   * Commands must have {@link #addConfigs(ConfigHelper, Cluster)} invoked before
   * being sent to the agent so that the definitions will have the required
   * configuration data when they run. Failure to do this will cause the alerts to
   * be scheduled and run, but the result will always be a failure since the
   * parameterized properties they depend on will not be available.
   */
  public class AlertDefinitionCommand extends AgentCommand {
    @SerializedName("clusterName")
    private final String m_clusterName;
  
    @SerializedName("hostName")
    private final String m_hostName;
  
    @SerializedName("publicHostName")
    private final String m_publicHostName;
  
    @SerializedName("hash")
    private final String m_hash;
  
    @SerializedName("alertDefinitions")
    @JsonProperty("alertDefinitions")
    private final List<AlertDefinition> m_definitions;
  
    @SerializedName("configurations")
    @JsonProperty("configurations")
    private Map<String, Map<String, String>> m_configurations;
  
    /**
     * Constructor.
     *
     * @param clusterName
     *          the name of the cluster this response is for (
     * @param hostName
     * @param publicHostName
     * @param hash
     * @param definitions
     *
     * @see AlertDefinitionHash
     */
    public AlertDefinitionCommand(String clusterName, String hostName, String publicHostName,
        String hash, List<AlertDefinition> definitions) {
      super(AgentCommandType.ALERT_DEFINITION_COMMAND);
  
      m_clusterName = clusterName;
      m_hostName = hostName;
      m_publicHostName = publicHostName;
      m_hash = hash;
      m_definitions = definitions;
    }
  
    /**
     *
     */
    @Override
    public AgentCommandType getCommandType() {
      return AgentCommandType.ALERT_DEFINITION_COMMAND;
    }
  
    /**
     * Gets the global hash for all alert definitions for a given host.
     *
     * @return the hash (never {@code null}).
     */
    public String getHash() {
      return m_hash;
    }
  
    /**
     * Gets the alert definitions
     *
     * @return
     */
    public List<AlertDefinition> getAlertDefinitions() {
      return m_definitions;
    }
  
    /**
     * Gets the name of the cluster.
     *
     * @return the cluster name (not {@code null}).
     */
    @JsonProperty("clusterName")
    public String getClusterName() {
      return m_clusterName;
    }
  
    /**
     * Gets the host name.
     *
     * @return the host name (not {@code null}).
     */
    @JsonProperty("hostName")
    public String getHostName() {
      return m_hostName;
    }
  
    /**
     * Adds cluster configuration properties as required by commands sent to agent.
     *
     * @param configHelper the helper
     * @param cluster the cluster, matching the cluster name specified by the command
     */
    public void addConfigs(ConfigHelper configHelper, Cluster cluster)
      throws AmbariException {
      Map<String, Map<String, String>> configTags = configHelper.getEffectiveDesiredTags(cluster, m_hostName);
      Map<String, Map<String, String>> configurations = configHelper.getEffectiveConfigProperties(cluster, configTags);
      m_configurations = configurations;
    }
  }
  