/*
* 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.adapter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import reactor.core.publisher.Mono;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.HttpHandler;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.util.Assert;
import org.springframework.web.server.WebHandler;
import org.springframework.web.server.handler.WebHandlerDecorator;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.server.session.DefaultWebSessionManager;
import org.springframework.web.server.session.WebSessionManager;
/**
* Default adapter of {@link WebHandler} to the {@link HttpHandler} contract.
*
* <p>By default creates and configures a {@link DefaultServerWebExchange} and
* then invokes the target {@code WebHandler}.
*
* @author Rossen Stoyanchev
*/
public class HttpWebHandlerAdapter extends WebHandlerDecorator implements HttpHandler {
private static Log logger = LogFactory.getLog(HttpWebHandlerAdapter.class);
private WebSessionManager sessionManager = new DefaultWebSessionManager();
public HttpWebHandlerAdapter(WebHandler delegate) {
super(delegate);
}
/**
* Configure a custom {@link WebSessionManager} to use for managing web
* sessions. The provided instance is set on each created
* {@link DefaultServerWebExchange}.
* <p>By default this is set to {@link DefaultWebSessionManager}.
* @param sessionManager the session manager to use
*/
public void setSessionManager(WebSessionManager sessionManager) {
Assert.notNull(sessionManager, "'sessionManager' must not be null.");
this.sessionManager = sessionManager;
}
/**
* Return the configured {@link WebSessionManager}.
*/
public WebSessionManager getSessionManager() {
return this.sessionManager;
}
@Override
public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
ServerWebExchange exchange = createExchange(request, response);
return getDelegate().handle(exchange)
.otherwise(ex -> {
if (logger.isDebugEnabled()) {
logger.debug("Could not complete request", ex);
}
response.setStatusCode(HttpStatus.INTERNAL_SERVER_ERROR);
return Mono.empty();
})
.then(response::setComplete);
}
protected ServerWebExchange createExchange(ServerHttpRequest request, ServerHttpResponse response) {
return new DefaultServerWebExchange(request, response, this.sessionManager);
}
}