DarkflameServer/dDatabase/Database.cpp
Jonathan Romano 2f48981801
Address socket issues with MariaDB
Use a new method of determining how to send the connection information to the database
2022-11-07 01:26:15 -08:00

119 lines
3.9 KiB
C++

#include "Database.h"
#include "Game.h"
#include "dConfig.h"
#include "dLogger.h"
using namespace std;
#pragma warning (disable:4251) //Disables SQL warnings
sql::Driver* Database::driver;
sql::Connection* Database::con;
sql::Properties Database::props;
std::string Database::database;
void Database::Connect(const string& host, const string& database, const string& username, const string& password) {
//To bypass debug issues:
const char* szDatabase = database.c_str();
const char* szUsername = username.c_str();
const char* szPassword = password.c_str();
driver = sql::mariadb::get_driver_instance();
sql::Properties properties;
// The mariadb connector is *supposed* to handle unix:// and pipe:// prefixes to hostName, but there are bugs where
// 1) it tries to parse a database from the connection string (like in tcp://localhost:3001/darkflame) based on the
// presence of a /
// 2) even avoiding that, the connector still assumes you're connecting with a tcp socket
// So, what we do in the presence of a unix socket or pipe is to set the hostname to the protocol and localhost,
// which avoids parsing errors while still ensuring the correct connection type is used, and then setting the appropriate
// property manually (which the URL parsing fails to do)
const std::string UNIX_PROTO = "unix://";
const std::string PIPE_PROTO = "pipe://";
if (host.find(UNIX_PROTO) == 0) {
properties["hostName"] = "unix://localhost";
properties["localSocket"] = host.substr(UNIX_PROTO.length()).c_str();
} else if (host.find(PIPE_PROTO) == 0) {
properties["hostName"] = "pipe://localhost";
properties["pipe"] = host.substr(PIPE_PROTO.length()).c_str();
} else {
properties["hostName"] = host.c_str();
}
properties["user"] = szUsername;
properties["password"] = szPassword;
properties["autoReconnect"] = "true";
Database::props = properties;
Database::database = database;
Database::Connect();
}
void Database::Connect() {
// `connect(const Properties& props)` segfaults in windows debug, but
// `connect(const SQLString& host, const SQLString& user, const SQLString& pwd)` doesn't handle pipes/unix sockets correctly
if (Database::props.find("localSocket") != Database::props.end() || Database::props.find("pipe") != Database::props.end()) {
con = driver->connect(Database::props);
} else {
con = driver->connect(Database::props["hostName"].c_str(), Database::props["user"].c_str(), Database::props["password"].c_str());
}
con->setSchema(Database::database.c_str());
}
void Database::Destroy(std::string source, bool log) {
if (!con) return;
if (log) {
if (source != "") Game::logger->Log("Database", "Destroying MySQL connection from %s!", source.c_str());
else Game::logger->Log("Database", "Destroying MySQL connection!");
}
con->close();
delete con;
} //Destroy
sql::Statement* Database::CreateStmt() {
sql::Statement* toReturn = con->createStatement();
return toReturn;
} //CreateStmt
sql::PreparedStatement* Database::CreatePreppedStmt(const std::string& query) {
const char* test = query.c_str();
size_t size = query.length();
sql::SQLString str(test, size);
if (!con) {
Connect();
Game::logger->Log("Database", "Trying to reconnect to MySQL");
}
if (!con->isValid() || con->isClosed()) {
delete con;
con = nullptr;
Connect();
Game::logger->Log("Database", "Trying to reconnect to MySQL from invalid or closed connection");
}
auto* stmt = con->prepareStatement(str);
return stmt;
} //CreatePreppedStmt
void Database::Commit() {
Database::con->commit();
}
bool Database::GetAutoCommit() {
// TODO This should not just access a pointer. A future PR should update this
// to check for null and throw an error if the connection is not valid.
return con->getAutoCommit();
}
void Database::SetAutoCommit(bool value) {
// TODO This should not just access a pointer. A future PR should update this
// to check for null and throw an error if the connection is not valid.
Database::con->setAutoCommit(value);
}