com.facebook.presto.jdbc.internal.apache.http.client.UserTokenHandler Maven / Gradle / Ivy
/*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package com.facebook.presto.jdbc.internal.apache.http.client;
import com.facebook.presto.jdbc.internal.apache.http.protocol.HttpContext;
/**
* A handler for determining if the given execution context is user specific
* or not. The token object returned by this handler is expected to uniquely
* identify the current user if the context is user specific or to be
* {@code null} if the context does not contain any resources or details
* specific to the current user.
*
* The user token will be used to ensure that user specific resources will not
* be shared with or reused by other users.
*
*
* @since 4.0
*/
public interface UserTokenHandler {
/**
* The token object returned by this method is expected to uniquely
* identify the current user if the context is user specific or to be
* {@code null} if it is not.
*
* @param context the execution context
*
* @return user token that uniquely identifies the user or
* {@code null} if the context is not user specific.
*/
Object getUserToken(HttpContext context);
}
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