/*
* Copyright 2002-2016 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.web.server.session;
import java.time.Duration;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
import org.springframework.http.HttpCookie;
import org.springframework.http.ResponseCookie;
import org.springframework.util.Assert;
import org.springframework.util.MultiValueMap;
import org.springframework.util.StringUtils;
import org.springframework.web.server.ServerWebExchange;
/**
* Cookie-based {@link WebSessionIdResolver}.
*
* @author Rossen Stoyanchev
* @since 5.0
*/
public class CookieWebSessionIdResolver implements WebSessionIdResolver {
private String cookieName = "SESSION";
private Duration cookieMaxAge = Duration.ofSeconds(-1);
/**
* Set the name of the cookie to use for the session id.
* <p>By default set to "SESSION".
* @param cookieName the cookie name
*/
public void setCookieName(String cookieName) {
Assert.hasText(cookieName, "'cookieName' must not be empty.");
this.cookieName = cookieName;
}
/**
* Return the configured cookie name.
*/
public String getCookieName() {
return this.cookieName;
}
/**
* Set the value for the "Max-Age" attribute of the cookie that holds the
* session id. For the range of values see {@link ResponseCookie#getMaxAge()}.
* <p>By default set to -1.
* @param maxAge the maxAge duration value
*/
public void setCookieMaxAge(Duration maxAge) {
this.cookieMaxAge = maxAge;
}
/**
* Return the configured "Max-Age" attribute value for the session cookie.
*/
public Duration getCookieMaxAge() {
return this.cookieMaxAge;
}
@Override
public List<String> resolveSessionIds(ServerWebExchange exchange) {
MultiValueMap<String, HttpCookie> cookieMap = exchange.getRequest().getCookies();
List<HttpCookie> cookies = cookieMap.get(getCookieName());
if (cookies == null) {
return Collections.emptyList();
}
return cookies.stream().map(HttpCookie::getValue).collect(Collectors.toList());
}
@Override
public void setSessionId(ServerWebExchange exchange, String id) {
Duration maxAge = (StringUtils.hasText(id) ? getCookieMaxAge() : Duration.ofSeconds(0));
ResponseCookie cookie = ResponseCookie.from(getCookieName(), id).maxAge(maxAge).build();
MultiValueMap<String, ResponseCookie> cookieMap = exchange.getResponse().getCookies();
cookieMap.set(getCookieName(), cookie);
}
}