/*
* Copyright 2002-2016 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.http.server.reactive;
import io.undertow.server.HttpServerExchange;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.reactivestreams.Subscriber;
import org.reactivestreams.Subscription;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.util.Assert;
/**
* @author Marek Hawrylczak
* @author Rossen Stoyanchev
* @author Arjen Poutsma
*/
public class UndertowHttpHandlerAdapter implements io.undertow.server.HttpHandler {
private static Log logger = LogFactory.getLog(UndertowHttpHandlerAdapter.class);
private final HttpHandler delegate;
private final DataBufferFactory dataBufferFactory;
public UndertowHttpHandlerAdapter(HttpHandler delegate,
DataBufferFactory dataBufferFactory) {
Assert.notNull(delegate, "'delegate' is required");
Assert.notNull(dataBufferFactory, "'dataBufferFactory' must not be null");
this.delegate = delegate;
this.dataBufferFactory = dataBufferFactory;
}
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
ServerHttpRequest request =
new UndertowServerHttpRequest(exchange, this.dataBufferFactory);
ServerHttpResponse response =
new UndertowServerHttpResponse(exchange, this.dataBufferFactory);
this.delegate.handle(request, response).subscribe(new Subscriber<Void>() {
@Override
public void onSubscribe(Subscription subscription) {
subscription.request(Long.MAX_VALUE);
}
@Override
public void onNext(Void aVoid) {
// no op
}
@Override
public void onError(Throwable ex) {
logger.error("Error from request handling. Completing the request.", ex);
if (!exchange.isResponseStarted() && exchange.getStatusCode() <= 500) {
exchange.setStatusCode(500);
}
exchange.endExchange();
}
@Override
public void onComplete() {
exchange.endExchange();
}
});
}
}