/**
* Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright ownership. Apereo
* licenses this file to you 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 the
* following location:
*
* <p>http://www.apache.org/licenses/LICENSE-2.0
*
* <p>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.apereo.portal.portlet.container.cache;
import javax.portlet.CacheControl;
import org.apache.commons.lang.StringUtils;
import org.apereo.portal.portlet.rendering.PortletResourceOutputHandler;
/**
* CacheControl where calls to {@link #setExpirationTime(int)}, {@link #setPublicScope(boolean)},
* and {@link #setETag(String)} result setting headers Last-Modified, CacheControl and ETag
*
*/
public class HeaderSettingCacheControl implements CacheControl {
private final CacheControl cacheControl;
private final PortletResourceOutputHandler portletResourceOutputHandler;
private final long lastModified = System.currentTimeMillis();
public HeaderSettingCacheControl(
CacheControl cacheControl, PortletResourceOutputHandler portletResourceOutputHandler) {
this.cacheControl = cacheControl;
this.portletResourceOutputHandler = portletResourceOutputHandler;
}
private void setCacheHeaders(int time, boolean publicScope) {
PortletCachingHeaderUtils.setCachingHeaders(
time, publicScope, lastModified, this.portletResourceOutputHandler);
}
@Override
public int getExpirationTime() {
return this.cacheControl.getExpirationTime();
}
@Override
public void setExpirationTime(int time) {
this.cacheControl.setExpirationTime(time);
this.setCacheHeaders(time, this.isPublicScope());
}
@Override
public boolean isPublicScope() {
return this.cacheControl.isPublicScope();
}
@Override
public void setPublicScope(boolean publicScope) {
this.cacheControl.setPublicScope(publicScope);
this.setCacheHeaders(this.getExpirationTime(), publicScope);
}
@Override
public String getETag() {
return this.cacheControl.getETag();
}
@Override
public void setETag(String token) {
token = StringUtils.trimToNull(token);
this.cacheControl.setETag(token);
PortletCachingHeaderUtils.setETag(token, portletResourceOutputHandler);
}
@Override
public boolean useCachedContent() {
return this.cacheControl.useCachedContent();
}
@Override
public void setUseCachedContent(boolean useCachedContent) {
this.cacheControl.setUseCachedContent(useCachedContent);
}
}