spring security ServerWebExchangeDelegatingServerHttpHeadersWriter 源码
spring security ServerWebExchangeDelegatingServerHttpHeadersWriter 代码
文件路径：/web/src/main/java/org/springframework/security/web/server/header/ServerWebExchangeDelegatingServerHttpHeadersWriter.java
/*
* Copyright 2002-2022 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.security.web.server.header;
import reactor.core.publisher.Mono;
import org.springframework.security.web.server.util.matcher.ServerWebExchangeMatcher;
import org.springframework.security.web.server.util.matcher.ServerWebExchangeMatcherEntry;
import org.springframework.util.Assert;
import org.springframework.web.server.ServerWebExchange;
/**
* Delegates to a provided {@link ServerHttpHeadersWriter} if
* {@link ServerWebExchangeMatcher#matches(ServerWebExchange)} returns a match.
*
* @author David Herberth
* @since 5.8
*/
public final class ServerWebExchangeDelegatingServerHttpHeadersWriter implements ServerHttpHeadersWriter {
private final ServerWebExchangeMatcherEntry<ServerHttpHeadersWriter> headersWriter;
/**
* Creates a new instance
* @param headersWriter the {@link ServerWebExchangeMatcherEntry} holding a
* {@link ServerWebExchangeMatcher} and the {@link ServerHttpHeadersWriter} to invoke
* if the matcher returns a match.
*/
public ServerWebExchangeDelegatingServerHttpHeadersWriter(
ServerWebExchangeMatcherEntry<ServerHttpHeadersWriter> headersWriter) {
Assert.notNull(headersWriter, "headersWriter cannot be null");
Assert.notNull(headersWriter.getMatcher(), "webExchangeMatcher cannot be null");
Assert.notNull(headersWriter.getEntry(), "delegateHeadersWriter cannot be null");
this.headersWriter = headersWriter;
}
/**
* Creates a new instance
* @param webExchangeMatcher the {@link ServerWebExchangeMatcher} to use. If it
* returns a match, the delegateHeadersWriter is invoked.
* @param delegateHeadersWriter the {@link ServerHttpHeadersWriter} to invoke if the
* {@link ServerWebExchangeMatcher} returns a match.
*/
public ServerWebExchangeDelegatingServerHttpHeadersWriter(ServerWebExchangeMatcher webExchangeMatcher,
ServerHttpHeadersWriter delegateHeadersWriter) {
this(new ServerWebExchangeMatcherEntry<>(webExchangeMatcher, delegateHeadersWriter));
}
@Override
public Mono<Void> writeHttpHeaders(ServerWebExchange exchange) {
return this.headersWriter.getMatcher().matches(exchange).filter(ServerWebExchangeMatcher.MatchResult::isMatch)
.flatMap((matchResult) -> this.headersWriter.getEntry().writeHttpHeaders(exchange));
}
}
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