Support server.compression with reactive servers
This commit adds support for HTTP compression with reactive servers, with the following exceptions: * `server.compression.mime-types` and `server.compression.exclude-user-agents` are not supported by Reactor Netty at the moment * `server.compression.min-response-size` is only supported by Reactor Netty right now, since other implementations rely on the `"Content-Length"` HTTP response header to measure the response size and most reactive responses are using `"Transfer-Encoding: chunked"`. Closes gh-10782pull/11652/head
Brian Clozel
7 years ago
parent
bf88073f7e
commit
381d759ef1
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/*
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* Copyright 2012-2018 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.web.embedded.jetty;
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import java.io.IOException;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.eclipse.jetty.http.HttpMethod;
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import org.eclipse.jetty.server.Request;
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import org.eclipse.jetty.server.handler.HandlerWrapper;
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import org.eclipse.jetty.server.handler.gzip.GzipHandler;
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import org.springframework.boot.web.server.Compression;
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/**
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* Jetty {@code HandlerWrapper} static factory.
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*
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* @author Brian Clozel
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*/
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final class JettyHandlerWrappers {
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private JettyHandlerWrappers() {
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}
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static HandlerWrapper createGzipHandlerWrapper(Compression compression) {
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GzipHandler handler = new GzipHandler();
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handler.setMinGzipSize(compression.getMinResponseSize());
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handler.setIncludedMimeTypes(compression.getMimeTypes());
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for (HttpMethod httpMethod : HttpMethod.values()) {
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handler.addIncludedMethods(httpMethod.name());
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}
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if (compression.getExcludedUserAgents() != null) {
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handler.setExcludedAgentPatterns(compression.getExcludedUserAgents());
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}
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return handler;
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}
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static HandlerWrapper createServerHeaderHandlerWrapper(String header) {
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return new ServerHeaderHandler(header);
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}
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/**
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* {@link HandlerWrapper} to add a custom {@code server} header.
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*/
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private static class ServerHeaderHandler extends HandlerWrapper {
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private static final String SERVER_HEADER = "server";
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private final String value;
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ServerHeaderHandler(String value) {
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this.value = value;
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}
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@Override
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public void handle(String target, Request baseRequest, HttpServletRequest request,
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HttpServletResponse response) throws IOException, ServletException {
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if (!response.getHeaderNames().contains(SERVER_HEADER)) {
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response.setHeader(SERVER_HEADER, this.value);
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}
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super.handle(target, baseRequest, request, response);
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}
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}
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}
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