/**
    * 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.hbase.client;
  
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.ipc.RpcCallContext;
  import org.apache.hadoop.hbase.ipc.RpcServer;
  import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
  
  
  /**
   * Class to help with parsing the version info.
   */
  @InterfaceAudience.Private
  public final class VersionInfoUtil {
  
    private VersionInfoUtil() {
      /* UTIL CLASS ONLY */
    }
  
    public static boolean currentClientHasMinimumVersion(int major, int minor) {
      RpcCallContext call = RpcServer.getCurrentCall();
      HBaseProtos.VersionInfo versionInfo = call != null ? call.getClientVersionInfo() : null;
      return hasMinimumVersion(versionInfo, major, minor);
    }
  
    public static boolean hasMinimumVersion(HBaseProtos.VersionInfo versionInfo,
                                            int major,
                                            int minor) {
      if (versionInfo != null) {
        if (versionInfo.hasVersionMajor() && versionInfo.hasVersionMinor()) {
          int clientMajor = versionInfo.getVersionMajor();
          if (clientMajor != major) {
            return clientMajor > major;
          }
          int clientMinor = versionInfo.getVersionMinor();
          return clientMinor >= minor;
        }
        try {
          String[] components = versionInfo.getVersion().split("\\.");
  
          int clientMajor = components.length > 0 ? Integer.parseInt(components[0]) : 0;
          if (clientMajor != major) {
            return clientMajor > major;
          }
  
          int clientMinor = components.length > 1 ? Integer.parseInt(components[1]) : 0;
          return clientMinor >= minor;
        } catch (NumberFormatException e) {
          return false;
        }
      }
      return false;
    }
  }