/*
 * 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.iceberg.io;

/**
 * Interface used to expose credentials held by a FileIO instance.
 *
 * <p>Tables supply a FileIO instance to use for file access that is configured with the credentials
 * needed to access the table's files. Systems that do not use FileIO can use this interface to get
 * the configured credential as a string, and use the credential for file access via other IO
 * libraries.
 *
 * @deprecated since 1.10.0, will be removed in 2.0.0
 */
@Deprecated
public interface CredentialSupplier {
  /** Returns the credential string */
  String getCredential();
}
