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#ifndef NODE_SQLITE3_SRC_DATABASE_H
#define NODE_SQLITE3_SRC_DATABASE_H
#include <assert.h>
#include <string>
#include <queue>
#include <sqlite3.h>
#include <napi.h>
#include "async.h"
using namespace Napi;
namespace node_sqlite3 {
class Database;
class Database : public Napi::ObjectWrap<Database> {
public:
#if NAPI_VERSION < 6
static Napi::FunctionReference constructor;
#endif
static Napi::Object Init(Napi::Env env, Napi::Object exports);
static inline bool HasInstance(Napi::Value val) {
auto env = val.Env();
Napi::HandleScope scope(env);
if (!val.IsObject()) return false;
auto obj = val.As<Napi::Object>();
#if NAPI_VERSION < 6
return obj.InstanceOf(constructor.Value());
#else
auto constructor =
env.GetInstanceData<Napi::FunctionReference>();
return obj.InstanceOf(constructor->Value());
#endif
}
struct Baton {
napi_async_work request = NULL;
Database* db;
Napi::FunctionReference callback;
int status;
std::string message;
Baton(Database* db_, Napi::Function cb_) :
db(db_), status(SQLITE_OK) {
db->Ref();
if (!cb_.IsUndefined() && cb_.IsFunction()) {
callback.Reset(cb_, 1);
}
}
virtual ~Baton() {
if (request) napi_delete_async_work(db->Env(), request);
db->Unref();
callback.Reset();
}
};
struct OpenBaton : Baton {
std::string filename;
int mode;
OpenBaton(Database* db_, Napi::Function cb_, const char* filename_, int mode_) :
Baton(db_, cb_), filename(filename_), mode(mode_) {}
virtual ~OpenBaton() override = default;
};
struct ExecBaton : Baton {
std::string sql;
ExecBaton(Database* db_, Napi::Function cb_, const char* sql_) :
Baton(db_, cb_), sql(sql_) {}
virtual ~ExecBaton() override = default;
};
struct LoadExtensionBaton : Baton {
std::string filename;
LoadExtensionBaton(Database* db_, Napi::Function cb_, const char* filename_) :
Baton(db_, cb_), filename(filename_) {}
virtual ~LoadExtensionBaton() override = default;
};
struct LimitBaton : Baton {
int id;
int value;
LimitBaton(Database* db_, Napi::Function cb_, int id_, int value_) :
Baton(db_, cb_), id(id_), value(value_) {}
virtual ~LimitBaton() override = default;
};
typedef void (*Work_Callback)(Baton* baton);
struct Call {
Call(Work_Callback cb_, Baton* baton_, bool exclusive_ = false) :
callback(cb_), exclusive(exclusive_), baton(baton_) {};
Work_Callback callback;
bool exclusive;
Baton* baton;
};
struct ProfileInfo {
std::string sql;
sqlite3_int64 nsecs;
};
struct UpdateInfo {
int type;
std::string database;
std::string table;
sqlite3_int64 rowid;
};
bool IsOpen() { return open; }
bool IsLocked() { return locked; }
typedef Async<std::string, Database> AsyncTrace;
typedef Async<ProfileInfo, Database> AsyncProfile;
typedef Async<UpdateInfo, Database> AsyncUpdate;
friend class Statement;
friend class Backup;
Database(const Napi::CallbackInfo& info);
~Database() {
RemoveCallbacks();
sqlite3_close(_handle);
_handle = NULL;
open = false;
}
protected:
WORK_DEFINITION(Open);
WORK_DEFINITION(Exec);
WORK_DEFINITION(Close);
WORK_DEFINITION(LoadExtension);
void Schedule(Work_Callback callback, Baton* baton, bool exclusive = false);
void Process();
Napi::Value Wait(const Napi::CallbackInfo& info);
static void Work_Wait(Baton* baton);
Napi::Value Serialize(const Napi::CallbackInfo& info);
Napi::Value Parallelize(const Napi::CallbackInfo& info);
Napi::Value Configure(const Napi::CallbackInfo& info);
Napi::Value Interrupt(const Napi::CallbackInfo& info);
static void SetBusyTimeout(Baton* baton);
static void SetLimit(Baton* baton);
static void RegisterTraceCallback(Baton* baton);
static void TraceCallback(void* db, const char* sql);
static void TraceCallback(Database* db, std::string* sql);
static void RegisterProfileCallback(Baton* baton);
static void ProfileCallback(void* db, const char* sql, sqlite3_uint64 nsecs);
static void ProfileCallback(Database* db, ProfileInfo* info);
static void RegisterUpdateCallback(Baton* baton);
static void UpdateCallback(void* db, int type, const char* database, const char* table, sqlite3_int64 rowid);
static void UpdateCallback(Database* db, UpdateInfo* info);
void RemoveCallbacks();
protected:
sqlite3* _handle = NULL;
bool open = false;
bool closing = false;
bool locked = false;
unsigned int pending = 0;
bool serialize = false;
std::queue<Call*> queue;
AsyncTrace* debug_trace = NULL;
AsyncProfile* debug_profile = NULL;
AsyncUpdate* update_event = NULL;
};
}
#endif
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