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/**
 * 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.hadoop.yarn.api.records;

import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceAudience.Public;
import org.apache.hadoop.classification.InterfaceStability.Stable;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.yarn.api.ApplicationClientProtocol;
import org.apache.hadoop.yarn.util.Records;

/**
 * NodeReport is a summary of runtime information of a 
 * node in the cluster.
 * 
 * It includes details such as:
 *   

 *     {@link NodeId} of the node.
 *     HTTP Tracking URL of the node.
 *     Rack name for the node.
 *     Used {@link Resource} on the node.
 *     Total available {@link Resource} of the node.
 *     Number of running containers on the node.
 *   
 * 
 *
 * @see ApplicationClientProtocol#getClusterNodes(org.apache.hadoop.yarn.api.protocolrecords.GetClusterNodesRequest)
 */
@Public
@Stable
public abstract class NodeReport {

  @Private
  @Unstable
  public static NodeReport newInstance(NodeId nodeId, NodeState nodeState,
      String httpAddress, String rackName, Resource used, Resource capability,
      int numContainers, String healthReport, long lastHealthReportTime) {
    NodeReport nodeReport = Records.newRecord(NodeReport.class);
    nodeReport.setNodeId(nodeId);
    nodeReport.setNodeState(nodeState);
    nodeReport.setHttpAddress(httpAddress);
    nodeReport.setRackName(rackName);
    nodeReport.setUsed(used);
    nodeReport.setCapability(capability);
    nodeReport.setNumContainers(numContainers);
    nodeReport.setHealthReport(healthReport);
    nodeReport.setLastHealthReportTime(lastHealthReportTime);
    return nodeReport;
  }

  /**
   * Get the NodeId of the node.
   * @return NodeId of the node
   */
  @Public
  @Stable
  public abstract NodeId getNodeId();
  
  @Private
  @Unstable
  public abstract void setNodeId(NodeId nodeId);
  
  /**
   * Get the NodeState of the node.
   * @return NodeState of the node
   */
  @Public
  @Stable
  public abstract NodeState getNodeState();
  
  @Private
  @Unstable
  public abstract void setNodeState(NodeState nodeState);
  
  /**
   * Get the http address of the node.
   * @return http address of the node
   */
  @Public
  @Stable
  public abstract String getHttpAddress();
  
  @Private
  @Unstable
  public abstract void setHttpAddress(String httpAddress);
  
  /**
   * Get the rack name for the node.
   * @return rack name for the node
   */
  @Public
  @Stable
  public abstract String getRackName();
  
  @Private
  @Unstable
  public abstract void setRackName(String rackName);
  
  /**
   * Get used Resource on the node.
   * @return used Resource on the node
   */
  @Public
  @Stable
  public abstract Resource getUsed();
  
  @Private
  @Unstable
  public abstract void setUsed(Resource used);
  
  /**
   * Get the total Resource on the node.
   * @return total Resource on the node
   */
  @Public
  @Stable
  public abstract Resource getCapability();
  
  @Private
  @Unstable
  public abstract void setCapability(Resource capability);
  
  /**
   * Get the number of allocated containers on the node.
   * @return number of allocated containers on the node
   */
  @Private
  @Unstable
  public abstract int getNumContainers();
  
  @Private
  @Unstable
  public abstract void setNumContainers(int numContainers);
  

  /** 
   * Get the diagnostic health report of the node.
   * @return diagnostic health report of the node
   */
  @Public
  @Stable
  public abstract String getHealthReport();

  @Private
  @Unstable
  public abstract void setHealthReport(String healthReport);

  /**
   * Get the last timestamp at which the health report was received.
   * @return last timestamp at which the health report was received
   */
  @Public
  @Stable
  public abstract long getLastHealthReportTime();

  @Private
  @Unstable
  public abstract void setLastHealthReportTime(long lastHealthReport);
}