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.security;
  
  import org.apache.kafka.clients.admin.ScramMechanism;
  import org.apache.kafka.common.security.authenticator.CredentialCache;
  import org.apache.kafka.common.security.scram.ScramCredential;
  import org.apache.kafka.common.security.scram.internals.ScramCredentialUtils;
  import org.apache.kafka.common.security.token.delegation.internals.DelegationTokenCache;
  
  import java.util.Collection;
  
  public class CredentialProvider {
      public final DelegationTokenCache tokenCache;
      public final CredentialCache credentialCache = new CredentialCache();
  
      public CredentialProvider(Collection<String> scramMechanisms, DelegationTokenCache tokenCache) {
          this.tokenCache = tokenCache;
          ScramCredentialUtils.createCache(credentialCache, scramMechanisms);
      }
  
      public void updateCredential(
          ScramMechanism mechanism,
          String name,
          ScramCredential credential
      ) {
          CredentialCache.Cache<ScramCredential> cache = credentialCache.cache(mechanism.mechanismName(), ScramCredential.class);
          cache.put(name, credential);
      }
  
      public void removeCredentials(
          ScramMechanism mechanism,
          String name
      ) {
          CredentialCache.Cache<ScramCredential> cache = credentialCache.cache(mechanism.mechanismName(), ScramCredential.class);
          if (cache != null) {
              cache.remove(name);
          }
      }
  }
  