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HandlerFeedGenerator: Add caching

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This commit is contained in:
Albert S. 2022-03-27 21:22:00 +02:00
parent f5eb36e7bb
commit 7bb7600d39
4 changed files with 23 additions and 11 deletions
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30
handlers/handlerfeedgenerator.cpp
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@ -43,8 +43,8 @@ std::vector<HandlerFeedGenerator::EntryRevisionPair> HandlerFeedGenerator::fetch
return result; return result;
} }
Response HandlerFeedGenerator::generateAtom(const std::vector<HandlerFeedGenerator::EntryRevisionPair> &entries, std::string HandlerFeedGenerator::generateAtom(const std::vector<HandlerFeedGenerator::EntryRevisionPair> &entries,
std::string filter) std::string filter)
{ {
std::stringstream stream; std::stringstream stream;
@ -89,11 +89,7 @@ Response HandlerFeedGenerator::generateAtom(const std::vector<HandlerFeedGenerat
atomheader.setVar("atomfeeduniqueid", utils::html_xss(this->urlProvider->atomFeed(filter))); atomheader.setVar("atomfeeduniqueid", utils::html_xss(this->urlProvider->atomFeed(filter)));
atomheader.setVar("atomfeedupdate", utils::formatLocalDate(newestPublished, dateformat) + "Z"); atomheader.setVar("atomfeedupdate", utils::formatLocalDate(newestPublished, dateformat) + "Z");
Response result; return atomheader.render() + stream.str();
result.setStatus(200);
result.setContentType("application/atom+xml");
result.setBody(atomheader.render() + stream.str());
return result;
} }
Response HandlerFeedGenerator::handleRequest(const Request &r) Response HandlerFeedGenerator::handleRequest(const Request &r)
@ -103,12 +99,26 @@ Response HandlerFeedGenerator::handleRequest(const Request &r)
{ {
std::string type = r.get("type"); std::string type = r.get("type");
std::string categories = r.get("cats"); std::string categories = r.get("cats");
auto entries = fetchEntries(utils::split(categories, ','));
if(type == "atom") if(type == "atom")
{ {
std::string filter = categories; std::string filter = categories;
response = generateAtom(entries, filter); Response result;
result.setStatus(200);
result.setContentType("application/atom+xml");
std::string cacheKey = "feed:atom:" + filter;
auto cached = this->cache->get(cacheKey);
if(cached)
{
result.setBody(cached.value());
}
else
{
auto entries = fetchEntries(utils::split(categories, ','));
std::string feed = generateAtom(entries, filter);
result.setBody(feed);
this->cache->put(cacheKey, feed);
}
response = result;
} }
else else
{ {

2
handlers/handlerfeedgenerator.h
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@ -9,7 +9,7 @@ class HandlerFeedGenerator : public Handler
protected: protected:
std::vector<EntryRevisionPair> fetchEntries(std::vector<std::string> categories); std::vector<EntryRevisionPair> fetchEntries(std::vector<std::string> categories);
Response generateAtom(const std::vector<EntryRevisionPair> &entries, std::string atomtitle); std::string generateAtom(const std::vector<EntryRevisionPair> &entries, std::string atomtitle);
Response generateRss(const std::vector<EntryRevisionPair> &entries); Response generateRss(const std::vector<EntryRevisionPair> &entries);
public: public:

1
handlers/handlerpagedelete.cpp
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@ -45,6 +45,7 @@ Response HandlerPageDelete::handleRequest(PageDao &pageDao, std::string pagename
{ {
pageDao.deletePage(pagename); pageDao.deletePage(pagename);
this->cache->removePrefix("page:"); // TODO: overkill? this->cache->removePrefix("page:"); // TODO: overkill?
this->cache->removePrefix("feed:");
return Response::redirectTemporarily(this->urlProvider->index()); return Response::redirectTemporarily(this->urlProvider->index());
} }
TemplatePage delPage = this->templ->getPage("page_deletion"); TemplatePage delPage = this->templ->getPage("page_deletion");

1
handlers/handlerpageedit.cpp
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@ -101,6 +101,7 @@ Response HandlerPageEdit::handleRequest(PageDao &pageDao, std::string pagename,
pageDao.setCategories(pagename, cats); pageDao.setCategories(pagename, cats);
this->database->commitTransaction(); this->database->commitTransaction();
this->cache->removePrefix("page:"); // TODO: overkill? this->cache->removePrefix("page:"); // TODO: overkill?
this->cache->removePrefix("feed:");
} }
catch(const DatabaseException &e) catch(const DatabaseException &e)
{ {