/*
 * 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.drill.common.logical.security;

import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Map;

/**
 * Provider of authentication credentials.
 */
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME,
    property = "credentialsProviderType",
    defaultImpl = PlainCredentialsProvider.class)
public interface CredentialsProvider {
  /**
   * Returns map with authentication credentials. Key is the credential name, for example {@code "username"}
   * and map value is corresponding credential value.
   */
  Logger logger = LoggerFactory.getLogger(CredentialsProvider.class);

  @JsonIgnore
  Map<String, String> getCredentials();
}
