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.kafka.common.security.token.delegation;
  
  import java.security.MessageDigest;
  import java.util.Arrays;
  import java.util.Base64;
  import java.util.Objects;
  
  /**
   * A class representing a delegation token.
   *
   */
  public class DelegationToken {
      private final TokenInformation tokenInformation;
      private final byte[] hmac;
  
      public DelegationToken(TokenInformation tokenInformation, byte[] hmac) {
          this.tokenInformation = tokenInformation;
          this.hmac = hmac;
      }
  
      public TokenInformation tokenInfo() {
          return tokenInformation;
      }
  
      public byte[] hmac() {
          return hmac;
      }
  
      public String hmacAsBase64String() {
          return Base64.getEncoder().encodeToString(hmac);
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
  
          DelegationToken token = (DelegationToken) o;
  
          return Objects.equals(tokenInformation, token.tokenInformation) && MessageDigest.isEqual(hmac, token.hmac);
      }
  
      @Override
      public int hashCode() {
          int result = tokenInformation != null ? tokenInformation.hashCode() : 0;
          result = 31 * result + Arrays.hashCode(hmac);
          return result;
      }
  
      @Override
      public String toString() {
          return "DelegationToken{" +
              "tokenInformation=" + tokenInformation +
              ", hmac=[*******]" +
              '}';
      }
  }
  