org.springframework.http.server.reactive.JettyHttpHandlerAdapter Maven / Gradle / Ivy
/*
* Copyright 2002-2017 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 java.io.IOException;
import java.nio.ByteBuffer;
import javax.servlet.AsyncContext;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.server.HttpOutput;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferFactory;
/**
* {@link ServletHttpHandlerAdapter} extension that uses Jetty APIs for writing
* to the response with {@link ByteBuffer}.
*
* @author Violeta Georgieva
* @since 5.0
*/
@WebServlet(asyncSupported = true)
public class JettyHttpHandlerAdapter extends ServletHttpHandlerAdapter {
public JettyHttpHandlerAdapter(HttpHandler httpHandler) {
super(httpHandler);
}
@Override
protected ServerHttpResponse createResponse(HttpServletResponse response,
AsyncContext context) throws IOException {
return new JettyServerHttpResponse(response, context, getDataBufferFactory(), getBufferSize());
}
private static final class JettyServerHttpResponse extends ServletServerHttpResponse {
public JettyServerHttpResponse(HttpServletResponse response, AsyncContext context,
DataBufferFactory factory, int bufferSize) throws IOException {
super(response, context, factory, bufferSize);
}
@Override
protected int writeToOutputStream(DataBuffer dataBuffer) throws IOException {
ByteBuffer input = dataBuffer.asByteBuffer();
int len = input.remaining();
ServletResponse response = getNativeResponse();
((HttpOutput) response.getOutputStream()).write(input);
return len;
}
}
}