package io.undertow.attribute;
import io.undertow.server.HttpServerExchange;
import io.undertow.server.handlers.Cookie;
import io.undertow.server.handlers.CookieImpl;
/**
* A cookie
*
* @author Stuart Douglas
*/
public class CookieAttribute implements ExchangeAttribute {
private final String cookieName;
public CookieAttribute(final String cookieName) {
this.cookieName = cookieName;
}
@Override
public String readAttribute(final HttpServerExchange exchange) {
Cookie cookie = exchange.getRequestCookies().get(cookieName);
if (cookie == null) {
return null;
}
return cookie.getValue();
}
@Override
public void writeAttribute(final HttpServerExchange exchange, final String newValue) throws ReadOnlyAttributeException {
exchange.setResponseCookie(new CookieImpl(cookieName, newValue));
}
public static final class Builder implements ExchangeAttributeBuilder {
@Override
public String name() {
return "Cookie";
}
@Override
public ExchangeAttribute build(final String token) {
if (token.startsWith("%{c,") && token.endsWith("}")) {
final String cookieName = token.substring(4, token.length() - 1);
return new CookieAttribute(cookieName);
}
return null;
}
}
}