/**
 * 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.impl.pb;


import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.yarn.api.records.YarnClusterMetrics;
import org.apache.hadoop.yarn.proto.YarnProtos.YarnClusterMetricsProto;
import org.apache.hadoop.yarn.proto.YarnProtos.YarnClusterMetricsProtoOrBuilder;

import org.apache.hadoop.thirdparty.protobuf.TextFormat;

@Private
@Unstable
public class YarnClusterMetricsPBImpl extends YarnClusterMetrics {
  YarnClusterMetricsProto proto = YarnClusterMetricsProto.getDefaultInstance();
  YarnClusterMetricsProto.Builder builder = null;
  boolean viaProto = false;
  
  public YarnClusterMetricsPBImpl() {
    builder = YarnClusterMetricsProto.newBuilder();
  }

  public YarnClusterMetricsPBImpl(YarnClusterMetricsProto proto) {
    this.proto = proto;
    viaProto = true;
  }
  
  public YarnClusterMetricsProto getProto() {
    proto = viaProto ? proto : builder.build();
    viaProto = true;
    return proto;
  }

  @Override
  public int hashCode() {
    return getProto().hashCode();
  }

  @Override
  public boolean equals(Object other) {
    if (other == null)
      return false;
    if (other.getClass().isAssignableFrom(this.getClass())) {
      return this.getProto().equals(this.getClass().cast(other).getProto());
    }
    return false;
  }

  @Override
  public String toString() {
    return TextFormat.shortDebugString(getProto());
  }

  private void maybeInitBuilder() {
    if (viaProto || builder == null) {
      builder = YarnClusterMetricsProto.newBuilder(proto);
    }
    viaProto = false;
  }
    
  
  @Override
  public int getNumNodeManagers() {
    YarnClusterMetricsProtoOrBuilder p = viaProto ? proto : builder;
    return (p.getNumNodeManagers());
  }

  @Override
  public void setNumNodeManagers(int numNodeManagers) {
    maybeInitBuilder();
    builder.setNumNodeManagers((numNodeManagers));
  }

  @Override
  public int getNumDecommissioningNodeManagers() {
    YarnClusterMetricsProtoOrBuilder p = viaProto ? proto : builder;
    if (p.hasNumDecommissioningNms()) {
      return (p.getNumDecommissioningNms());
    }
    return 0;
  }

  @Override
  public void
      setNumDecommissioningNodeManagers(int numDecommissioningNodeManagers) {
    maybeInitBuilder();
    builder.setNumDecommissioningNms(numDecommissioningNodeManagers);
  }

  @Override
  public int getNumDecommissionedNodeManagers() {
    YarnClusterMetricsProtoOrBuilder p = viaProto ? proto : builder;
    if (p.hasNumDecommissionedNms()) {
      return (p.getNumDecommissionedNms());
    }
    return 0;
  }

  @Override
  public void
      setNumDecommissionedNodeManagers(int numDecommissionedNodeManagers) {
    maybeInitBuilder();
    builder.setNumDecommissionedNms((numDecommissionedNodeManagers));
  }

  @Override
  public int getNumActiveNodeManagers() {
    YarnClusterMetricsProtoOrBuilder p = viaProto ? proto : builder;
    if (p.hasNumActiveNms()) {
      return (p.getNumActiveNms());
    }
    return 0;
  }

  @Override
  public void setNumActiveNodeManagers(int numActiveNodeManagers) {
    maybeInitBuilder();
    builder.setNumActiveNms((numActiveNodeManagers));
  }

  @Override
  public int getNumLostNodeManagers() {
    YarnClusterMetricsProtoOrBuilder p = viaProto ? proto : builder;
    if (p.hasNumLostNms()) {
      return (p.getNumLostNms());
    }
    return 0;
  }

  @Override
  public void setNumLostNodeManagers(int numLostNodeManagers) {
    maybeInitBuilder();
    builder.setNumLostNms((numLostNodeManagers));
  }

  @Override
  public int getNumUnhealthyNodeManagers() {
    YarnClusterMetricsProtoOrBuilder p = viaProto ? proto : builder;
    if (p.hasNumUnhealthyNms()) {
      return (p.getNumUnhealthyNms());
    }
    return 0;

  }

  @Override
  public void setNumUnhealthyNodeManagers(int numUnhealthyNodeManagers) {
    maybeInitBuilder();
    builder.setNumUnhealthyNms((numUnhealthyNodeManagers));
  }

  @Override
  public int getNumRebootedNodeManagers() {
    YarnClusterMetricsProtoOrBuilder p = viaProto ? proto : builder;
    if (p.hasNumRebootedNms()) {
      return (p.getNumRebootedNms());
    }
    return 0;
  }

  @Override
  public void setNumRebootedNodeManagers(int numRebootedNodeManagers) {
    maybeInitBuilder();
    builder.setNumRebootedNms((numRebootedNodeManagers));
  }

  @Override
  public int getNumShutdownNodeManagers() {
    YarnClusterMetricsProtoOrBuilder p = viaProto ? proto : builder;
    if (p.hasNumShutdownNms()) {
      return (p.getNumShutdownNms());
    }
    return 0;
  }

  @Override
  public void setNumShutdownNodeManagers(int numShutdownNodeManagers) {
    maybeInitBuilder();
    builder.setNumShutdownNms(numShutdownNodeManagers);
  }
}
