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.celeborn.common.network.sasl;
  
  /** Interface for getting a secret key associated with some application. */
  public interface SecretRegistry {
  
    /** Gets an appropriate SASL secret key for the given appId. */
    String getSecretKey(String appId);
  
    boolean isRegistered(String appId);
  
    void register(String appId, String secret);
  
    void unregister(String appId);
  
    /** Checks if the SecretRegistry can register the application. */
    default boolean registrationEnabled() {
      return true;
    }
  }
  