feat(MainDb): add an `events` module with 1.0.0 version

include/linphone/utils/general.h

@@ -82,6 +82,9 @@ void l_assert (const char *condition, const char *file, int line);
 	#define L_UNLIKELY(EXPRESSION) EXPRESSION
 #endif
 
+// Define an integer version like: 0xXXYYZZ, XX=MAJOR, YY=MINOR, and ZZ=PATCH.
+#define L_VERSION(MAJOR, MINOR, PATCH) (((MAJOR) << 16) | ((MINOR) << 8) | (PATCH))
+
 class BaseObject;
 class BaseObjectPrivate;
 class ClonableObject;

src/db/main-db-p.h

@@ -147,6 +147,13 @@ private:
 
 	void invalidConferenceEventsFromQuery (const std::string &query, long long chatRoomId);
 
+	// ---------------------------------------------------------------------------
+	// Versions.
+	// ---------------------------------------------------------------------------
+
+	unsigned int getModuleVersion (const std::string &name);
+	void updateModuleVersion (const std::string &name, unsigned int version);
+
 	L_DECLARE_PUBLIC(MainDb);
 };
 

src/db/main-db.cpp

@@ -41,6 +41,8 @@
 #include "main-db-key-p.h"
 #include "main-db-p.h"
 
+#define DB_MODULE_VERSION_EVENTS L_VERSION(1, 0, 0)
+
 // =============================================================================
 
 // See: http://soci.sourceforge.net/doc/3.2/exchange.html
@@ -1019,6 +1021,22 @@ static constexpr string &blobToString (string &in) {
 		}
 	}
 
+// -----------------------------------------------------------------------------
+
+	unsigned int MainDbPrivate::getModuleVersion (const string &name) {
+		soci::session *session = dbSession.getBackendSession<soci::session>();
+
+		unsigned int version;
+		*session << "SELECT version FROM db_module_version WHERE name = :name", soci::into(version), soci::use(name);
+		return session->got_data() ? version : 0;
+	}
+
+	void MainDbPrivate::updateModuleVersion (const string &name, unsigned int version) {
+		soci::session *session = dbSession.getBackendSession<soci::session>();
+		*session << "REPLACE INTO db_module_version (name, version) VALUES (:name, :version)",
+			soci::use(name), soci::use(version);
+	}
+
 // -----------------------------------------------------------------------------
 
 	void MainDb::init () {
@@ -1310,6 +1328,8 @@ static constexpr string &blobToString (string &in) {
 			"  name" + varcharPrimaryKeyStr(16) + ","
 			"  version INT UNSIGNED NOT NULL"
 			") " + charset;
+
+		d->updateModuleVersion("events", DB_MODULE_VERSION_EVENTS);
 	}
 
 	bool MainDb::addEvent (const shared_ptr<EventLog> &eventLog) {