@Override
protected void processFilter(
HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
throws Exception {
request.setAttribute(SKIP_FILTER, Boolean.TRUE);
String key = getCacheKey(request);
long companyId = PortalInstances.getCompanyId(request);
CacheResponseData cacheResponseData = CacheUtil.getCacheResponseData(companyId, key);
if (cacheResponseData == null) {
if (!isCacheableData(companyId, request)) {
if (_log.isDebugEnabled()) {
_log.debug("Request is not cacheable " + key);
}
processFilter(CacheFilter.class, request, response, filterChain);
return;
}
if (_log.isInfoEnabled()) {
_log.info("Caching request " + key);
}
BufferCacheServletResponse bufferCacheServletResponse =
new BufferCacheServletResponse(response);
processFilter(CacheFilter.class, request, bufferCacheServletResponse, filterChain);
cacheResponseData = new CacheResponseData(bufferCacheServletResponse);
LastPath lastPath = (LastPath) request.getAttribute(WebKeys.LAST_PATH);
if (lastPath != null) {
cacheResponseData.setAttribute(WebKeys.LAST_PATH, lastPath);
}
// Cache the result if and only if there is a result and the request
// is cacheable. We have to test the cacheability of a request twice
// because the user could have been authenticated after the initial
// test.
String cacheControl =
GetterUtil.getString(bufferCacheServletResponse.getHeader(HttpHeaders.CACHE_CONTROL));
if ((bufferCacheServletResponse.getStatus() == HttpServletResponse.SC_OK)
&& !cacheControl.contains(HttpHeaders.PRAGMA_NO_CACHE_VALUE)
&& isCacheableRequest(request)
&& isCacheableResponse(bufferCacheServletResponse)) {
CacheUtil.putCacheResponseData(companyId, key, cacheResponseData);
}
} else {
LastPath lastPath = (LastPath) cacheResponseData.getAttribute(WebKeys.LAST_PATH);
if (lastPath != null) {
HttpSession session = request.getSession();
session.setAttribute(WebKeys.LAST_PATH, lastPath);
}
}
CacheResponseUtil.write(response, cacheResponseData);
}
