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#include <pch.hpp>
#include "curlHelper.h"
#include "safeMapFind.h"
#include "exceptions.h"
#include "../libmisc/buffer.h"
#include "../libmisc/curlsup.h"
#include <scriptLoader.h>
#include <sessionContainer.h>
#include <boost/bind.hpp>
#include <boost/foreach.hpp>
#include "json.h"
#include "safeMapFind.h"
#include "conversion.h"
#include "options.h"
class CouchDBFailure : public std::exception { };
class CouchSessionContainer : public SessionContainer {
public:
CouchSessionContainer() {
}
virtual SessionPtr getSession(const UUID & uuid) const {
try {
json::Object obj = getSessionFromServer(uuid);
if (boost::get<json::Number>(*safeMapLookup<Session::VariableNotFound>(obj, ExpiryKey)) > time(NULL)) {
SessionPtr s = new Session(uuid);
BOOST_FOREACH(const json::Object::value_type & v, obj) {
s->SetValue(v.first, boost::apply_visitor(JsonToProject2(), *v.second));
}
return s;
}
}
catch (...) {
}
return NULL;
}
virtual void SaveSession(SessionPtr s) const {
CurlPtr c = new Curl();
c->setopt(CURLOPT_UPLOAD, 1L);
c->setopt(CURLOPT_FAILONERROR, 1);
json::Object obj;
s->ForeachValue(boost::bind(&CouchSessionContainer::addToObject, &obj, _1, _2));
obj[ExpiryKey] = json::ValuePtr(new json::Value((json::Number)s->ExpiryTime()));
Glib::ustring out = json::serializeObject(obj);
c->setopt(CURLOPT_INFILESIZE_LARGE, (curl_off_t)out.size());
unsigned int off = 0;
BOOST_FOREACH(const std::string & b, baseUrls) {
c->setopt(CURLOPT_URL, (b + s->ID.str()).c_str());
try {
c->performSend(boost::bind(send, &out, &off, _1, _2));
return;
}
catch (...) {
}
}
throw CouchDBFailure();
}
json::Object getSessionFromServer(const UUID & uuid) const {
CurlPtr c = new Curl();
c->setopt(CURLOPT_FAILONERROR, 1);
Glib::ustring msg;
BOOST_FOREACH(const std::string & b, baseUrls) {
try {
c->setopt(CURLOPT_URL, (b + uuid.str()).c_str());
c->performRead(boost::bind(append, &msg, _1, _2));
json::Object o = json::parseObject(msg);
return o;
}
catch (...) {
}
}
throw CouchDBFailure();
}
private:
static void addToObject(json::Object * obj, const Glib::ustring & name, const VariableType & value) {
(*obj)[name] = json::ValuePtr(new json::Value(boost::apply_visitor(Project2ToJson(), value)));
}
static size_t send(Glib::ustring * buf, unsigned int * off, char * str, size_t l) {
size_t len = std::min(buf->size() - *off, l);
memcpy(str, buf->c_str() + *off, len);
return len;
}
static size_t append(Glib::ustring * buf, const char * str, size_t l) {
buf->append(str, l);
return l;
}
void setopt_s(CurlHandle::Ptr c, CURLoption o, const char * v) {
c->setopt(o, v);
}
void setopt_l(CurlHandle::Ptr c, CURLoption o, int64_t v) {
c->setopt(o, (long)v);
}
static std::vector<std::string> baseUrls;
static const Glib::ustring ExpiryKey;
friend class CustomCouchSessionLoader;
};
std::vector<std::string> CouchSessionContainer::baseUrls;
const Glib::ustring CouchSessionContainer::ExpiryKey("project2:expires");
class CustomCouchSessionLoader : public SessionContainerLoaderImpl<CouchSessionContainer> {
public:
CustomCouchSessionLoader() :
opts("Session CouchDB options")
{
opts
("session.couchdb.baseUrl", Options::value(&CouchSessionContainer::baseUrls),
"Base URL to store sessions in")
;
}
const Options *
options() const
{
return &opts;
}
void onPeriodic() {
deleteSessions();
compactDB();
}
private:
static size_t discard(size_t l) {
return l;
}
void compactDB() {
CurlPtr c = new Curl();
c->setopt(CURLOPT_POST, 1);
c->appendHeader("Content-Type: application/json");
BOOST_FOREACH(const std::string & b, CouchSessionContainer::baseUrls) {
c->setopt(CURLOPT_URL, (b + "_compact").c_str());
c->performRead(boost::bind(discard, _2));
}
}
void deleteSessions() {
// Create the server side search map
json::Object map;
Buffer mapBuf;
mapBuf.appendf("function(doc) { var exp = doc['%s']; if (exp < %u) { emit(exp, doc._rev); } }",
CouchSessionContainer::ExpiryKey.c_str(), (unsigned int)time(NULL));
map["map"] = json::ValuePtr(new json::Value(mapBuf.str()));
Glib::ustring mapStr(json::serializeObject(map));
// Create the CURL handle
CurlPtr c = new Curl();
c->setopt(CURLOPT_FAILONERROR, 1);
c->appendHeader("Content-Type: application/json");
c->setopt(CURLOPT_POST, 1);
c->setopt(CURLOPT_POSTFIELDS, mapStr.c_str());
c->setopt(CURLOPT_POSTFIELDSIZE, mapStr.bytes());
BOOST_FOREACH(const std::string & b, CouchSessionContainer::baseUrls) {
Glib::ustring msg;
try {
c->setopt(CURLOPT_URL, (b + "_temp_view").c_str());
c->performRead(boost::bind(CouchSessionContainer::append, &msg, _1, _2));
json::Object o = json::parseObject(msg);
BOOST_FOREACH(const json::Array::value_type & v, boost::get<json::Array>(*safeMapLookup<ParamNotFound>(o, "rows"))) {
json::Object rec = boost::get<json::Object>(*v);
UUID u = boost::get<json::String>(*safeMapLookup<ParamNotFound>(rec, "id")).raw();
Glib::ustring & rev = boost::get<json::String>(*safeMapLookup<ParamNotFound>(rec, "value"));
deleteSession(u, rev);
}
return;
}
catch (...) {
}
}
}
void deleteSession(const UUID & sid, const Glib::ustring & rev) const {
CurlPtr c = new Curl();
c->setopt(CURLOPT_CUSTOMREQUEST, "DELETE");
BOOST_FOREACH(const std::string & b, CouchSessionContainer::baseUrls) {
c->setopt(CURLOPT_URL, (b + sid.str() + "?rev=" + rev).c_str());
c->performRead(boost::bind(discard, _2));
return;
}
}
Options opts;
};
DECLARE_CUSTOM_COMPONENT_LOADER("couchsession", CouchSessionContainer, CustomCouchSessionLoader, SessionContainerLoader);
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