/*
* Copyright 2002-2015 the original author or authors.
*
* Licensed 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.springframework.web.server;
import java.util.Map;
import java.util.Optional;
import reactor.core.publisher.Mono;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
/**
* Contract for an HTTP request-response interaction. Provides access to the HTTP
* request and response and also exposes additional server-side processing
* related properties and features such as request attributes.
*
* @author Rossen Stoyanchev
*/
public interface ServerWebExchange {
/**
* Return the current HTTP request.
*/
ServerHttpRequest getRequest();
/**
* Return the current HTTP response.
*/
ServerHttpResponse getResponse();
/**
* Return a mutable map of request attributes for the current exchange.
*/
Map<String, Object> getAttributes();
/**
* Return the request attribute value if present.
* @param name the attribute name
* @param <T> the attribute type
* @return the attribute value
*/
<T> Optional<T> getAttribute(String name);
/**
* Return the web session for the current request. Always guaranteed to
* return an instance either matching to the session id requested by the
* client, or with a new session id either because the client did not
* specify one or because the underlying session had expired. Use of this
* method does not automatically create a session. See {@link WebSession}
* for more details.
*/
Mono<WebSession> getSession();
}