Wrap Kodi DB transactions explicitly

resources/lib/itemtypes/common.py

@@ -56,10 +56,11 @@ class ItemBase(object):
         """
         self.plexconn = utils.kodi_sql('plex')
         self.plexcursor = self.plexconn.cursor()
-        self.kodiconn = utils.kodi_sql('video')
-        self.kodicursor = self.kodiconn.cursor()
         self.artconn = utils.kodi_sql('texture')
         self.artcursor = self.artconn.cursor()
+        self.kodiconn = utils.kodi_sql('video', writer=True)
+        self.kodicursor = self.kodiconn.cursor()
+        self.kodicursor.execute('BEGIN')
         self.plexdb = PlexDB(self.plexcursor)
         self.kodidb = KodiVideoDB(texture_db=True,
                                   cursor=self.kodicursor,
@@ -71,13 +72,20 @@ class ItemBase(object):
         Make sure DB changes are committed and connection to DB is closed.
         """
         self.plexconn.commit()
-        self.kodiconn.commit()
-        self.artconn.commit()
         self.plexconn.close()
-        self.kodiconn.close()
+        self.artconn.commit()
         self.artconn.close()
+        self.kodicursor.execute('END TRANSACTION')
+        self.kodiconn.close()
         return self
 
+    def commit(self):
+        self.plexconn.commit()
+        self.artconn.commit()
+        self.kodicursor.execute('END TRANSACTION')
+        self.kodicursor.execute('PRAGMA wal_checkpoint(FULL);')
+        self.kodicursor.execute('BEGIN TRANSACTION')
+
     def set_fanart(self, artworks, kodi_id, kodi_type):
         """
         Writes artworks [dict containing only set artworks] to the Kodi art DB

resources/lib/library_sync/process_metadata.py

@@ -123,12 +123,12 @@ class ProcessMetadata(backgroundthread.KillableThread, common.libsync_mixin):
                             self.processed += 1
                         self.update_progressbar()
                         self.current += 1
-                        if self.processed == 500:
+                        if self.processed == 200:
                             self.processed = 0
-                            context.kodiconn.commit()
-                            context.artconn.commit()
-                            context.plexconn.commit()
+                            context.commit()
                         self.queue.task_done()
+                        if section.plex_type == 'episode' and self.current == 1000:
+                            break
                 profile.disable()
                 string_io = StringIO()
                 stats = Stats(profile, stream=string_io).sort_stats('cumulative')

resources/lib/utils.py

@@ -475,7 +475,7 @@ def unix_timestamp(seconds_into_the_future=None):
     return int((future - EPOCH).total_seconds())
 
 
-def kodi_sql(media_type=None):
+def kodi_sql(media_type=None, writer=False):
     """
     Open a connection to the Kodi database.
         media_type: 'video' (standard if not passed), 'plex', 'music', 'texture'
@@ -488,6 +488,11 @@ def kodi_sql(media_type=None):
         db_path = v.DB_TEXTURE_PATH
     else:
         db_path = v.DB_VIDEO_PATH
+    if writer:
+        conn = connect(db_path, timeout=5.0, isolation_level=None)
+        conn.execute('PRAGMA journal_mode=WAL')
+        # conn.execute('BEGIN TRANSACTION')
+    else:
         conn = connect(db_path, timeout=5.0)
         conn.execute('PRAGMA journal_mode=WAL')
     return conn