package org.apache.hadoop.yarn.api.records.impl.pb;


import java.util.List;

import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ApplicationMaster;
import org.apache.hadoop.yarn.api.records.ApplicationState;
import org.apache.hadoop.yarn.api.records.ApplicationStatus;
import org.apache.hadoop.yarn.api.records.ProtoBase;
import org.apache.hadoop.yarn.proto.YarnProtos.ApplicationIdProto;
import org.apache.hadoop.yarn.proto.YarnProtos.ApplicationMasterProto;
import org.apache.hadoop.yarn.proto.YarnProtos.ApplicationMasterProtoOrBuilder;
import org.apache.hadoop.yarn.proto.YarnProtos.ApplicationStateProto;
import org.apache.hadoop.yarn.proto.YarnProtos.ApplicationStatusProto;
import org.apache.hadoop.yarn.util.ProtoUtils;


public class ApplicationMasterPBImpl extends ProtoBase<ApplicationMasterProto> implements ApplicationMaster {
  ApplicationMasterProto proto = ApplicationMasterProto.getDefaultInstance();
  ApplicationMasterProto.Builder builder = null;
  boolean viaProto = false;
  
  private ApplicationId applicationId = null;
  private ApplicationStatus applicationStatus = null;
  
  
  public ApplicationMasterPBImpl() {
    builder = ApplicationMasterProto.newBuilder();
  }

  public ApplicationMasterPBImpl(ApplicationMasterProto proto) {
    this.proto = proto;
    viaProto = true;
  }
  
  public ApplicationMasterProto getProto() {
  
      mergeLocalToProto();
    proto = viaProto ? proto : builder.build();
    viaProto = true;
    return proto;
  }

  private void mergeLocalToBuilder() {
    if (this.applicationId != null && !((ApplicationIdPBImpl)this.applicationId).getProto().equals(builder.getApplicationId())) {
      builder.setApplicationId(convertToProtoFormat(this.applicationId));
    }

    if (this.applicationStatus != null && !((ApplicationStatusPBImpl)this.applicationStatus).getProto().equals(builder.getStatus())) {
      builder.setStatus(convertToProtoFormat(this.applicationStatus));
    }
  }

  private void mergeLocalToProto() {
    if (viaProto) 
      maybeInitBuilder();
    mergeLocalToBuilder();
    proto = builder.build();
    
    viaProto = true;
  }
  
  private void maybeInitBuilder() {
    if (viaProto || builder == null) {
      builder = ApplicationMasterProto.newBuilder(proto);
    }
    viaProto = false;
  }
    
  
  @Override
  public ApplicationState getState() {
    ApplicationMasterProtoOrBuilder p = viaProto ? proto : builder;
    if (!p.hasState()) {
      return null;
    }
    return convertFromProtoFormat(p.getState());
  }

  @Override
  public void setState(ApplicationState state) {
    maybeInitBuilder();
    if (state == null) {
      builder.clearState();
      return;
    }
    builder.setState(convertToProtoFormat(state));
  }
  @Override
  public String getHost() {
    ApplicationMasterProtoOrBuilder p = viaProto ? proto : builder;
    if (!p.hasHost()) {
      return null;
    }
    return (p.getHost());
  }

  @Override
  public void setHost(String host) {
    maybeInitBuilder();
    if (host == null) {
      builder.clearHost();
      return;
    }
    builder.setHost((host));
  }
  
  @Override
  public ApplicationId getApplicationId() {
    ApplicationMasterProtoOrBuilder p = viaProto ? proto : builder;
    if (this.applicationId != null) {
      return applicationId;
    } // Else via proto
    if (!p.hasApplicationId()) {
      return null;
    }
    applicationId = convertFromProtoFormat(p.getApplicationId());
    
    return applicationId;
  }

  @Override
  public void setApplicationId(ApplicationId applicationId) {
    maybeInitBuilder();
    if (applicationId == null)
      builder.clearApplicationId();
    this.applicationId = applicationId;
    
  }
  @Override
  public int getRpcPort() {
    ApplicationMasterProtoOrBuilder p = viaProto ? proto : builder;
    return (p.getRpcPort());
  }

  @Override
  public void setRpcPort(int rpcPort) {
    maybeInitBuilder();
    builder.setRpcPort((rpcPort));
  }
  @Override
  public String getTrackingUrl() {
    ApplicationMasterProtoOrBuilder p = viaProto ? proto : builder;
    return (p.getTrackingUrl());
  }

  @Override
  public void setTrackingUrl(String url) {
    maybeInitBuilder();
    builder.setTrackingUrl(url);
  }
  @Override
  public ApplicationStatus getStatus() {
    ApplicationMasterProtoOrBuilder p = viaProto ? proto : builder;
    if (this.applicationStatus != null) {
      return this.applicationStatus;
    } // Else via proto
    if (!p.hasStatus()) {
      return null;
    }
    this.applicationStatus = convertFromProtoFormat(p.getStatus());
    
    return this.applicationStatus;
  }

  @Override
  public void setStatus(ApplicationStatus status) {
    maybeInitBuilder();
    if (status == null)
      builder.clearStatus();
    this.applicationStatus = status;
    
  }
  @Override
  public String getClientToken() {
    ApplicationMasterProtoOrBuilder p = viaProto ? proto : builder;
    if (!p.hasClientToken()) {
      return null;
    }
    return (p.getClientToken());
  }

  @Override
  public void setClientToken(String clientToken) {
    maybeInitBuilder();
    if (clientToken == null) {
      builder.clearClientToken();
      return;
    }
    builder.setClientToken((clientToken));
  }
  
  @Override
  public int getAMFailCount() {
    ApplicationMasterProtoOrBuilder p = viaProto ? proto : builder;
    return (p.getAmFailCount());
  }

  @Override
  public int getContainerCount() {
    ApplicationMasterProtoOrBuilder p = viaProto ? proto : builder;
    return (p.getContainerCount());
  }

  @Override
  public void setAMFailCount(int amFailCount) {
    maybeInitBuilder();
    builder.setAmFailCount(amFailCount);
  }

  @Override
  public void setContainerCount(int containerCount) {
    maybeInitBuilder();
    builder.setContainerCount(containerCount);
  }

  @Override
  public String getDiagnostics() {
    ApplicationMasterProtoOrBuilder p = viaProto ? proto : builder;
    return p.getDiagnostics();
  }

  @Override
  public void setDiagnostics(String diagnostics) {
    maybeInitBuilder();
    if (diagnostics == null) {
      builder.clearDiagnostics();
      return;
    }
    builder.setDiagnostics(diagnostics);
  }

  private ApplicationStateProto convertToProtoFormat(ApplicationState e) {
    return ProtoUtils.convertToProtoFormat(e);
  }

  private ApplicationState convertFromProtoFormat(ApplicationStateProto e) {
    return ProtoUtils.convertFromProtoFormat(e);
  }

  private ApplicationIdPBImpl convertFromProtoFormat(ApplicationIdProto p) {
    return new ApplicationIdPBImpl(p);
  }

  private ApplicationIdProto convertToProtoFormat(ApplicationId t) {
    return ((ApplicationIdPBImpl)t).getProto();
  }

  private ApplicationStatusPBImpl convertFromProtoFormat(ApplicationStatusProto p) {
    return new ApplicationStatusPBImpl(p);
  }

  private ApplicationStatusProto convertToProtoFormat(ApplicationStatus t) {
    return ((ApplicationStatusPBImpl)t).getProto();
  }

}