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.metadata;
  
  import org.apache.kafka.clients.admin.ScramMechanism;
  import org.apache.kafka.common.metadata.UserScramCredentialRecord;
  import org.apache.kafka.common.security.scram.ScramCredential;
  
  import java.util.Arrays;
  import java.util.Objects;
  
  /**
   * Represents the ACLs in the metadata image.
   *
   * This class is thread-safe.
   */
  public final class ScramCredentialData {
      private final byte[] salt;
      private final byte[] storedKey;
      private final byte[] serverKey;
      private final int iterations;
  
      public static ScramCredentialData fromRecord(
          UserScramCredentialRecord record
      ) {
          return new ScramCredentialData(
                  record.salt(),
                  record.storedKey(),
                  record.serverKey(),
                  record.iterations());
      }
  
      public ScramCredentialData(
          byte[] salt,
          byte[] storedKey,
          byte[] serverKey,
          int iterations
      ) {
          this.salt = salt;
          this.storedKey = storedKey;
          this.serverKey = serverKey;
          this.iterations = iterations;
      }
  
      public byte[] salt() {
          return salt;
      }
  
      public byte[] storedKey() {
          return storedKey;
      }
  
      public byte[] serverKey() {
          return serverKey;
      }
  
      public int iterations() {
          return iterations;
      }
  
      public UserScramCredentialRecord toRecord(
          String userName,
          ScramMechanism mechanism
      ) {
          return new UserScramCredentialRecord().
                  setName(userName).
                  setMechanism(mechanism.type()).
                  setSalt(salt).
                  setStoredKey(storedKey).
                  setServerKey(serverKey).
                  setIterations(iterations);
      }
  
      public ScramCredential toCredential() {
          return new ScramCredential(salt, storedKey, serverKey, iterations);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(
              Arrays.hashCode(salt),
              Arrays.hashCode(storedKey),
              Arrays.hashCode(serverKey),
              iterations
          );
      }
  
      @Override
      public boolean equals(Object o) {
          if (o == null) return false;
          if (!o.getClass().equals(ScramCredentialData.class)) return false;
          ScramCredentialData other = (ScramCredentialData) o;
          return Arrays.equals(salt, other.salt) &&
                  Arrays.equals(storedKey, other.storedKey) &&
                  Arrays.equals(serverKey, other.serverKey) &&
                  iterations == other.iterations;
      }
  
      @Override
      public String toString() {
          return "ScramCredentialData" +
              "(salt=" + "[hidden]" +
              ", storedKey=" + "[hidden]" +
              ", serverKey=" + "[hidden]" +
              ", iterations=" + "[hidden]" +
              ")";
      }
  }
  