/*
*
* * 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.security.web.server.header;
import java.util.Arrays;
import java.util.Collections;
import org.springframework.http.HttpHeaders;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
/**
* @author Rob Winch
* @since 5.0
*/
public class StaticHttpHeadersWriter implements HttpHeadersWriter {
private final HttpHeaders headersToAdd;
public StaticHttpHeadersWriter(HttpHeaders headersToAdd) {
this.headersToAdd = headersToAdd;
}
/* (non-Javadoc)
* @see org.springframework.security.web.server.HttpHeadersWriter#writeHttpHeaders(org.springframework.web.server.ServerWebExchange)
*/
@Override
public Mono<Void> writeHttpHeaders(ServerWebExchange exchange) {
HttpHeaders headers = exchange.getResponse().getHeaders();
boolean containsOneHeaderToAdd = Collections.disjoint(headers.keySet(), this.headersToAdd.keySet());
if(containsOneHeaderToAdd) {
this.headersToAdd.forEach((name, values) -> {
headers.put(name, values);
});
}
return Mono.empty();
}
public static Builder builder() {
return new Builder();
}
public static class Builder {
private HttpHeaders headers = new HttpHeaders();
public Builder header(String headerName, String...values) {
headers.put(headerName, Arrays.asList(values));
return this;
}
public StaticHttpHeadersWriter build() {
return new StaticHttpHeadersWriter(headers);
}
}
}