org.springframework.http.server.reactive.JettyHttpHandlerAdapter Maven / Gradle / Ivy
/*
* Copyright 2002-2024 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
*
* https://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.io.OutputStream;
import java.nio.ByteBuffer;
import jakarta.servlet.AsyncContext;
import jakarta.servlet.http.HttpServletResponse;
import org.eclipse.jetty.ee10.servlet.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
* @author Brian Clozel
* @author Juergen Hoeller
* @since 5.0
* @see org.springframework.web.server.adapter.AbstractReactiveWebInitializer
*/
public class JettyHttpHandlerAdapter extends ServletHttpHandlerAdapter {
public JettyHttpHandlerAdapter(HttpHandler httpHandler) {
super(httpHandler);
}
@Override
protected ServletServerHttpResponse createResponse(HttpServletResponse response,
AsyncContext context, ServletServerHttpRequest request) throws IOException {
return new Jetty12ServerHttpResponse(
response, context, getDataBufferFactory(), getBufferSize(), request);
}
private static final class Jetty12ServerHttpResponse extends ServletServerHttpResponse {
Jetty12ServerHttpResponse(HttpServletResponse response, AsyncContext asyncContext,
DataBufferFactory bufferFactory, int bufferSize, ServletServerHttpRequest request)
throws IOException {
super(response, asyncContext, bufferFactory, bufferSize, request);
}
@Override
protected int writeToOutputStream(DataBuffer dataBuffer) throws IOException {
OutputStream output = getOutputStream();
if (output instanceof HttpOutput httpOutput) {
int len = 0;
try (DataBuffer.ByteBufferIterator iterator = dataBuffer.readableByteBuffers()) {
while (iterator.hasNext() && httpOutput.isReady()) {
ByteBuffer byteBuffer = iterator.next();
len += byteBuffer.remaining();
httpOutput.write(byteBuffer);
}
}
return len;
}
return super.writeToOutputStream(dataBuffer);
}
}
}