feat(MainDb):

- Allow only move constructor/assignment operator on DbSession
- Check thread id of AbstractDb in transaction
- Fix a copy session in MainDb::init

src/CMakeLists.txt

@@ -112,7 +112,7 @@ set(LINPHONE_CXX_OBJECTS_PRIVATE_HEADER_FILES
 	db/main-db-key.h
 	db/main-db-p.h
 	db/main-db.h
-	db/session/db-session-p.h
+	db/session/db-session.h
 	dial-plan/dial-plan-p.h
 	dial-plan/dial-plan.h
 	enums.h

src/db/abstract/abstract-db-p.h

@@ -20,6 +20,8 @@
 #ifndef _L_ABSTRACT_DB_P_H_
 #define _L_ABSTRACT_DB_P_H_
 
+#include <thread>
+
 #include "abstract-db.h"
 #include "db/session/db-session.h"
 #include "object/object-p.h"
@@ -34,6 +36,8 @@ public:
 
 	DbSession dbSession;
 
+	const std::thread::id threadId = std::this_thread::get_id();
+
 private:
 	AbstractDb::Backend backend;
 

src/db/internal/db-exception-handler.h

@@ -85,19 +85,24 @@ public:
 	>::type;
 
 	DbExceptionHandler (DbExceptionHandlerInfo &info, Function &&function) : mFunction(std::move(function)) {
+		MainDb *mainDb = info.mainDb;
+		L_ASSERT(mainDb->getPrivate()->threadId == std::this_thread::get_id());
+
 		const char *name = info.name;
+		soci::session *session = mainDb->getPrivate()->dbSession.getBackendSession();
+
 		try {
-			SmartTransaction tr(info.mainDb->getPrivate()->dbSession.getBackendSession(), name);
+			SmartTransaction tr(session, name);
 			mResult = exec<InternalReturnType>(tr);
 		} catch (const soci::soci_error &e) {
 			lWarning() << "Catched exception in MainDb::" << name << "(" << e.what() << ").";
 			soci::soci_error::error_category category = e.get_error_category();
 			if (
 				(category == soci::soci_error::connection_error || category == soci::soci_error::unknown) &&
-				info.mainDb->forceReconnect()
+				mainDb->forceReconnect()
 			) {
 				try {
-					SmartTransaction tr(info.mainDb->getPrivate()->dbSession.getBackendSession(), name);
+					SmartTransaction tr(session, name);
 					mResult = exec<InternalReturnType>(tr);
 				} catch (const std::exception &e) {
 					lError() << "Unable to execute query after reconnect in MainDb::" << name << "(" << e.what() << ").";

src/db/main-db.cpp

@@ -1386,10 +1386,10 @@ void MainDb::init () {
 	soci::session *session = d->dbSession.getBackendSession();
 
 	using namespace placeholders;
-	auto primaryKeyRefStr = bind(&DbSession::primaryKeyRefStr, d->dbSession, _1);
-	auto primaryKeyStr = bind(&DbSession::primaryKeyStr, d->dbSession, _1);
-	auto timestampType = bind(&DbSession::timestampType, d->dbSession);
-	auto varcharPrimaryKeyStr = bind(&DbSession::varcharPrimaryKeyStr, d->dbSession, _1);
+	auto primaryKeyRefStr = bind(&DbSession::primaryKeyRefStr, &d->dbSession, _1);
+	auto primaryKeyStr = bind(&DbSession::primaryKeyStr, &d->dbSession, _1);
+	auto timestampType = bind(&DbSession::timestampType, &d->dbSession);
+	auto varcharPrimaryKeyStr = bind(&DbSession::varcharPrimaryKeyStr, &d->dbSession, _1);
 
 	auto createTableSanitizer = [](const char *statement) {
 		// TODO.

src/db/session/db-session-p.h

-/*
- * db-session-p.h
- * Copyright (C) 2010-2018 Belledonne Communications SARL
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
-
-#ifndef _L_DB_SESSION_P_H_
-#define _L_DB_SESSION_P_H_
-
-#include "db-session.h"
-#include "object/clonable-object-p.h"
-
-// =============================================================================
-
-LINPHONE_BEGIN_NAMESPACE
-
-class DbSessionPrivate : public ClonableObjectPrivate {
-private:
-	enum class Backend {
-		None,
-		Mysql,
-		Sqlite3
-	} backend = Backend::None;
-
-	#ifdef SOCI_ENABLED
-		std::unique_ptr<soci::session> backendSession;
-	#endif // ifdef SOCI_ENABLED
-
-	L_DECLARE_PUBLIC(DbSession);
-};
-
-LINPHONE_END_NAMESPACE
-
-#endif // ifndef _L_DB_SESSION_P_H_

src/db/session/db-session.cpp

@@ -19,7 +19,7 @@
 
 #include "linphone/utils/utils.h"
 
-#include "db-session-p.h"
+#include "db-session.h"
 #include "logger/logger.h"
 
 // =============================================================================
@@ -28,7 +28,20 @@ using namespace std;
 
 LINPHONE_BEGIN_NAMESPACE
 
-DbSession::DbSession () : ClonableObject(*new DbSessionPrivate) {}
+class DbSessionPrivate {
+public:
+	enum class Backend {
+		None,
+		Mysql,
+		Sqlite3
+	} backend = Backend::None;
+
+	#ifdef SOCI_ENABLED
+		std::unique_ptr<soci::session> backendSession;
+	#endif // ifdef SOCI_ENABLED
+};
+
+DbSession::DbSession () : mPrivate(new DbSessionPrivate) {}
 
 DbSession::DbSession (const string &uri) : DbSession() {
 	#ifdef SOCI_ENABLED
@@ -44,13 +57,24 @@ DbSession::DbSession (const string &uri) : DbSession() {
 	#endif // ifdef SOCI_ENABLED
 }
 
+DbSession::DbSession (DbSession &&other) : mPrivate(other.mPrivate) {
+	other.mPrivate = nullptr;
+}
+
+DbSession::~DbSession () {
+	delete mPrivate;
+}
+
+DbSession &DbSession::operator= (DbSession &&other) {
+	std::swap(mPrivate, other.mPrivate);
+	return *this;
+}
+
 DbSession::operator bool () const {
 	L_D();
 	return d->backend != DbSessionPrivate::Backend::None;
 }
 
-L_USE_DEFAULT_CLONABLE_OBJECT_SHARED_IMPL(DbSession);
-
 soci::session *DbSession::getBackendSession () const {
 	#ifdef SOCI_ENABLED
 		L_D();

src/db/session/db-session.h

@@ -39,15 +39,16 @@ LINPHONE_BEGIN_NAMESPACE
 
 class DbSessionPrivate;
 
-class DbSession : public ClonableObject {
+class DbSession {
 	friend class DbSessionProvider;
 
 public:
 	DbSession ();
 	explicit DbSession (const std::string &uri);
-	DbSession (const DbSession &other);
+	DbSession (DbSession &&other);
+	~DbSession ();
 
-	DbSession &operator= (const DbSession &other);
+	DbSession &operator= (DbSession &&other);
 
 	operator bool () const;
 
@@ -70,6 +71,8 @@ public:
 	long long resolveId (const soci::row &row, int col) const;
 
 private:
+	DbSessionPrivate *mPrivate;
+
 	L_DECLARE_PRIVATE(DbSession);
 };