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#include "my-connection.h"
#include "my-error.h"
#include "my-selectcommand.h"
#include "my-modifycommand.h"
#include <nvpParse.h>
#include <runtimeContext.h>
#include <ucontext.h>
#include <optional>
#include <compileTimeFormatter.h>
NAMEDFACTORY("mysql", MySQL::Connection, DB::ConnectionFactory);
MySQL::ConnectionError::ConnectionError(MYSQL * m) :
MySQL::Error(m)
{
}
class Opts {
public:
Opts() { port = 3306; }
using OptString = std::optional<std::string>;
OptString server;
OptString user;
OptString password;
OptString database;
unsigned int port;
OptString unix_socket;
OptString options;
};
const char *
operator~(const Opts::OptString & os)
{
if (os) {
return os->c_str();
}
return nullptr;
}
namespace std {
template <typename T>
std::istream &
operator>>(std::istream & s, std::optional<T> & o)
{
o = T();
return (s >> *o);
}
}
using namespace AdHoc;
NvpTarget(Opts) OptsTargetMap {
NvpValue(Opts, server),
NvpValue(Opts, user),
NvpValue(Opts, password),
NvpValue(Opts, database),
NvpValue(Opts, unix_socket),
NvpValue(Opts, port),
NvpValue(Opts, options),
};
MySQL::Connection::Connection(const std::string & str) :
conn({})
{
std::stringstream i(str);
Opts o;
NvpParse::parse(i, OptsTargetMap, o);
mysql_init(&conn);
if (o.options) {
mysql_options(&conn, MYSQL_READ_DEFAULT_GROUP, ~o.options);
}
if (!mysql_real_connect(&conn, ~o.server, ~o.user, ~o.password, ~o.database,
// NOLINTNEXTLINE(hicpp-signed-bitwise)
o.port, ~o.unix_socket, CLIENT_LOCAL_FILES | CLIENT_MULTI_STATEMENTS)) {
throw ConnectionError(&conn);
}
if (mysql_set_character_set(&conn, "utf8")) {
throw ConnectionError(&conn);
}
}
MySQL::Connection::~Connection()
{
mysql_close(&conn);
}
void
MySQL::Connection::beginTxInt()
{
if (mysql_autocommit(&conn, 0)) {
throw Error(&conn);
}
}
void
MySQL::Connection::commitTxInt()
{
if (mysql_commit(&conn)) {
throw Error(&conn);
}
}
void
MySQL::Connection::rollbackTxInt()
{
if (mysql_rollback(&conn)) {
throw Error(&conn);
}
}
DB::BulkDeleteStyle
MySQL::Connection::bulkDeleteStyle() const
{
return DB::BulkDeleteUsingUsingAlias;
}
DB::BulkUpdateStyle
MySQL::Connection::bulkUpdateStyle() const
{
return DB::BulkUpdateUsingJoin;
}
void
MySQL::Connection::ping() const
{
if (mysql_ping(&conn)) {
throw Error(&conn);
}
}
DB::SelectCommandPtr
MySQL::Connection::select(const std::string & sql, const DB::CommandOptionsCPtr &)
{
return std::make_shared<SelectCommand>(this, sql);
}
DB::ModifyCommandPtr
MySQL::Connection::modify(const std::string & sql, const DB::CommandOptionsCPtr &)
{
return std::make_shared<ModifyCommand>(this, sql);
}
namespace MySQL {
class LoadContext : public AdHoc::System::RuntimeContext {
public:
explicit LoadContext(MYSQL * c) :
loadBuf(nullptr),
loadBufLen(0),
bufOff(0),
conn(c),
loadReturn(0)
{
}
static int local_infile_init(void ** ptr, const char *, void * ctx) {
*ptr = ctx;
return 0;
}
static int local_infile_read(void * obj, char * buf, unsigned int bufSize) {
auto ctx = static_cast<LoadContext *>(obj);
if (ctx->loadBufLen - ctx->bufOff == 0) {
ctx->swapContext();
if (ctx->loadBufLen - ctx->bufOff <= 0) {
// Nothing to do or error
return ctx->bufOff;
}
}
auto copy = std::min<size_t>(ctx->loadBufLen - ctx->bufOff, bufSize);
memcpy(buf, ctx->loadBuf + ctx->bufOff, copy);
ctx->bufOff += copy;
return copy;
}
static void local_infile_end(void *) {
}
static int local_infile_error(void *, char*, unsigned int) {
return 0;
}
void callback() override
{
loadReturn = mysql_read_query_result(conn);
}
const char * loadBuf;
size_t loadBufLen;
size_t bufOff;
MYSQL * conn;
int loadReturn;
};
}
AdHocFormatter(MySQLConnectionLoadData, "LOAD DATA LOCAL INFILE 'any' INTO TABLE %? %?");
void
MySQL::Connection::beginBulkUpload(const char * table, const char * extra)
{
auto sql = MySQLConnectionLoadData::get(table, extra);
mysql_send_query(&conn, sql.c_str(), sql.length());
ctx = std::make_unique<LoadContext>(&conn);
mysql_set_local_infile_handler(&conn, LoadContext::local_infile_init, LoadContext::local_infile_read,
LoadContext::local_infile_end, LoadContext::local_infile_error, ctx.get());
ctx->swapContext();
}
void
MySQL::Connection::endBulkUpload(const char * msg)
{
ctx->loadBuf = nullptr;
ctx->loadBufLen = 0;
ctx->bufOff = msg ? -1 : 0;
// switch context with empty buffer fires finished
ctx->swapContext();
// Check result
if (!msg) {
if (ctx->loadReturn) {
ctx.reset();
throw Error(&conn);
}
}
ctx.reset();
}
size_t
MySQL::Connection::bulkUploadData(const char * data, size_t len) const
{
ctx->loadBuf = data;
ctx->loadBufLen = len;
ctx->bufOff = 0;
// switch context to load the buffered data
ctx->swapContext();
return len;
}
int64_t
MySQL::Connection::insertId()
{
return mysql_insert_id(&conn);
}
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