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.view;
  
  import java.io.UnsupportedEncodingException;
  
  import org.apache.ambari.view.MaskException;
  import org.apache.ambari.view.Masker;
  import org.apache.commons.codec.binary.Base64;
  
  /**
   * Provides simple masking of view parameters.
   */
  public class DefaultMasker implements Masker {
  
    @Override
    public String mask(String value) throws MaskException {
      try {
        return Base64.encodeBase64String(value.getBytes("UTF-8"));
      } catch (UnsupportedEncodingException e) {
        throw new MaskException("UTF-8 is not supported", e);
      }
    }
  
    @Override
    public String unmask(String value) throws MaskException {
      try {
        return new String(Base64.decodeBase64(value), "UTF-8");
      } catch (UnsupportedEncodingException e) {
        throw new MaskException("UTF-8 is not supported", e);
      }
    }
  }
  