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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.http.filter;
import com.google.common.collect.Iterables;
import com.yahoo.jdisc.http.Cookie;
import com.yahoo.jdisc.http.HttpHeaders;
import com.yahoo.jdisc.http.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;
import java.util.Collection;
import java.util.List;
/**
* Servlet implementation for JDisc filter responses.
*
* @since 5.27
*/
class ServletFilterResponse extends DiscFilterResponse {
private final ServletResponse parent;
public ServletFilterResponse(ServletResponse parent) {
super(parent);
this.parent = parent;
}
ServletResponse getServletResponse() {
return parent;
}
public void setStatus(int status) {
parent.setStatus(status);
}
@Override
public void setHeader(String name, String value) {
parent.setHeader(name, value);
}
@Override
public void removeHeaders(String name) {
HttpServletResponse parentResponse = parent.getResponse();
if (parentResponse instanceof org.eclipse.jetty.server.Response) {
org.eclipse.jetty.server.Response jettyResponse = (org.eclipse.jetty.server.Response)parentResponse;
jettyResponse.getHttpFields().remove(name);
} else {
throw new UnsupportedOperationException(
"Cannot remove headers for response of type " + parentResponse.getClass().getName());
}
}
// Why have a setHeaders that takes a single string?
@Override
public void setHeaders(String name, String value) {
parent.setHeader(name, value);
}
@Override
public void setHeaders(String name, List<String> values) {
for (String value : values)
parent.addHeader(name, value);
}
@Override
public void addHeader(String name, String value) {
parent.addHeader(name, value);
}
@Override
public String getHeader(String name) {
Collection<String> headers = parent.getHeaders(name);
return headers.isEmpty()
? null
: Iterables.getLast(headers);
}
@Override
public void setCookies(List<Cookie> cookies) {
removeHeaders(HttpHeaders.Names.SET_COOKIE);
List<String> setCookieHeaders = Cookie.toSetCookieHeaderAll(cookies);
setCookieHeaders.forEach(cookie -> addHeader(HttpHeaders.Names.SET_COOKIE, cookie));
}
}
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