text: /*
   * Copyright © 2014 Cask Data, Inc.
   *
   * Licensed 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 io.cdap.cdap.security.auth;
  
  import io.cdap.cdap.common.conf.CConfiguration;
  
  import java.io.IOException;
  
  /**
   * Maintains secret keys in memory and uses them to sign and validate authentication tokens.
   */
  public class InMemoryKeyManager extends MapBackedKeyManager {
  
    /**
     * Create an InMemoryKeyManager that stores keys in memory only.
     * @param conf
     */
    public InMemoryKeyManager(CConfiguration conf) {
      super(conf);
    }
  
    @Override
    public void doInit() throws IOException {
      generateKey();
    }
  
    @Override
    public void shutDown() {
      // nothing to do
    }
  }
  