io.undertow.attribute.CookieAttribute Maven / Gradle / Ivy
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* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 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;
}
@Override
public int priority() {
return 0;
}
}
}