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#include "module.h"
#include "../extra/sql.h"
#include "../commands/os_session.h"
class DBMySQL : public Module, public Pipe
{
private:
Anope::string engine;
Anope::string prefix;
service_reference<SQLProvider> SQL;
time_t lastwarn;
bool ro;
bool init;
std::set<dynamic_reference<Serializable> > updated_items;
bool CheckSQL()
{
if (SQL)
{
if (readonly && this->ro)
{
readonly = this->ro = false;
const BotInfo *bi = findbot(Config->OperServ);
if (bi)
ircdproto->SendGlobops(bi, "Found SQL again, going out of readonly mode...");
}
return true;
}
else
{
if (Anope::CurTime - Config->UpdateTimeout > lastwarn)
{
const BotInfo *bi = findbot(Config->OperServ);
if (bi)
ircdproto->SendGlobops(bi, "Unable to locate SQL reference, going to readonly...");
readonly = this->ro = true;
this->lastwarn = Anope::CurTime;
}
return false;
}
}
bool CheckInit()
{
return init && SQL;
}
void RunQuery(const SQLQuery &query)
{
/* Can this be threaded? */
this->RunQueryResult(query);
}
SQLResult RunQueryResult(const SQLQuery &query)
{
if (this->CheckSQL())
{
SQLResult res = SQL->RunQuery(query);
if (!res.GetError().empty())
Log(LOG_DEBUG) << "SQL-live got error " << res.GetError() << " for " + res.finished_query;
else
Log(LOG_DEBUG) << "SQL-live got " << res.Rows() << " rows for " << res.finished_query;
return res;
}
throw SQLException("No SQL!");
}
public:
DBMySQL(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, DATABASE), SQL("", "")
{
this->lastwarn = 0;
this->ro = false;
this->init = false;
Implementation i[] = { I_OnReload, I_OnShutdown, I_OnLoadDatabase, I_OnSerializableConstruct, I_OnSerializableDestruct, I_OnSerializeCheck, I_OnSerializableUpdate };
ModuleManager::Attach(i, this, sizeof(i) / sizeof(Implementation));
OnReload();
}
void OnNotify() anope_override
{
if (!this->CheckInit())
return;
for (std::set<dynamic_reference<Serializable> >::iterator it = this->updated_items.begin(), it_end = this->updated_items.end(); it != it_end; ++it)
{
dynamic_reference<Serializable> obj = *it;
if (obj && this->SQL)
{
if (obj->IsCached())
continue;
obj->UpdateCache();
SerializeType *s_type = obj->GetSerializableType();
if (!s_type)
continue;
Serialize::Data data = obj->serialize();
std::vector<SQLQuery> create = this->SQL->CreateTable(this->prefix + s_type->GetName(), data);
for (unsigned i = 0; i < create.size(); ++i)
this->RunQueryResult(create[i]);
SQLResult res = this->RunQueryResult(this->SQL->BuildInsert(this->prefix + s_type->GetName(), obj->id, data));
if (res.GetID() > 0)
obj->id = res.GetID();
s_type->objects.erase(obj->id);
}
}
this->updated_items.clear();
}
EventReturn OnLoadDatabase() anope_override
{
init = true;
return EVENT_STOP;
}
void OnShutdown() anope_override
{
init = false;
}
void OnReload() anope_override
{
ConfigReader config;
this->engine = config.ReadValue("db_sql", "engine", "", 0);
this->SQL = service_reference<SQLProvider>("SQLProvider", this->engine);
this->prefix = config.ReadValue("db_sql", "prefix", "anope_db_", 0);
}
void OnSerializableConstruct(Serializable *obj) anope_override
{
if (!this->CheckInit())
return;
this->updated_items.insert(obj);
this->Notify();
}
void OnSerializableDestruct(Serializable *obj) anope_override
{
if (!this->CheckInit())
return;
SerializeType *s_type = obj->GetSerializableType();
if (!s_type)
return;
this->RunQuery("DELETE FROM `" + this->prefix + s_type->GetName() + "` WHERE `id` = " + stringify(obj->id));
s_type->objects.erase(obj->id);
}
void OnSerializeCheck(SerializeType *obj) anope_override
{
if (!this->CheckInit() || obj->GetTimestamp() == Anope::CurTime)
return;
SQLQuery query("SELECT * FROM `" + this->prefix + obj->GetName() + "` WHERE (`timestamp` > " + this->SQL->FromUnixtime(obj->GetTimestamp()) + " OR `timestamp` IS NULL)");
obj->UpdateTimestamp();
SQLResult res = this->RunQueryResult(query);
bool clear_null = false;
for (int i = 0; i < res.Rows(); ++i)
{
const std::map<Anope::string, Anope::string> &row = res.Row(i);
unsigned int id;
try
{
id = convertTo<unsigned int>(res.Get(i, "id"));
}
catch (const ConvertException &)
{
Log(LOG_DEBUG) << "Unable to convert id from " << obj->GetName();
continue;
}
if (res.Get(i, "timestamp").empty())
{
clear_null = true;
std::map<unsigned int, Serializable *>::iterator it = obj->objects.find(id);
if (it != obj->objects.end())
{
it->second->destroy();
obj->objects.erase(it);
}
}
else
{
Serialize::Data data;
for (std::map<Anope::string, Anope::string>::const_iterator it = row.begin(), it_end = row.end(); it != it_end; ++it)
data[it->first] << it->second;
Serializable *s = NULL;
std::map<unsigned int, Serializable *>::iterator it = obj->objects.find(id);
if (it != obj->objects.end())
s = it->second;
Serializable *new_s = obj->Unserialize(s, data);
if (new_s)
{
// If s == new_s then s->id == new_s->id
if (s != new_s)
{
new_s->id = id;
obj->objects[id] = new_s;
}
}
else
s->destroy();
}
}
if (clear_null)
{
query = "DELETE FROM `" + this->prefix + obj->GetName() + "` WHERE `timestamp` IS NULL";
this->RunQuery(query);
}
}
void OnSerializableUpdate(Serializable *obj) anope_override
{
if (obj->IsTSCached())
return;
obj->UpdateTS();
this->updated_items.insert(obj);
this->Notify();
}
};
MODULE_INIT(DBMySQL)
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