From 84f7aba5d1c3a74326e7af35955e92eb1450a66a Mon Sep 17 00:00:00 2001
From: tomkat83 <kathriner.thomas@gmail.com>
Date: Sun, 26 Feb 2017 18:04:54 +0100
Subject: [PATCH] Try to skip new PMS items we've already processed

---
 resources/lib/librarysync.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/resources/lib/librarysync.py b/resources/lib/librarysync.py
index 6c95b56d..8de3a96a 100644
--- a/resources/lib/librarysync.py
+++ b/resources/lib/librarysync.py
@@ -321,6 +321,11 @@ class LibrarySync(Thread):
     def __init__(self, callback=None):
         self.mgr = callback
 
+        # Dict of items we just processed in order to prevent a reprocessing
+        # caused by websocket
+        self.just_processed = {}
+        # How long do we wait until we start re-processing? (in seconds)
+        self.ignore_just_processed = 10*60
         self.itemsToProcess = []
         self.sessionKeys = []
         self.fanartqueue = Queue.Queue()
@@ -532,6 +537,9 @@ class LibrarySync(Thread):
         # True: we're syncing only the delta, e.g. different checksum
         self.compare = not repair
 
+        # Empty our list of item's we've just processed in the past
+        self.just_processed = {}
+
         self.new_items_only = True
         # This will also update playstates and userratings!
         log.info('Running fullsync for NEW PMS items with repair=%s' % repair)
@@ -884,6 +892,7 @@ class LibrarySync(Thread):
             self.allPlexElementsId      APPENDED(!!) dict
                 = {itemid: checksum}
         """
+        now = getUnixTimestamp()
         if self.new_items_only is True:
             # Only process Plex items that Kodi does not already have in lib
             for item in xml:
@@ -903,6 +912,7 @@ class LibrarySync(Thread):
                         'title': item.attrib.get('title', 'Missing Title'),
                         'mediaType': item.attrib.get('type')
                     })
+                    self.just_processed[itemId] = now
             return
 
         if self.compare:
@@ -928,6 +938,7 @@ class LibrarySync(Thread):
                         'title': item.attrib.get('title', 'Missing Title'),
                         'mediaType': item.attrib.get('type')
                     })
+                    self.just_processed[itemId] = now
         else:
             # Initial or repair sync: get all Plex movies
             for item in xml:
@@ -946,6 +957,7 @@ class LibrarySync(Thread):
                     'title': item.attrib.get('title', 'Missing Title'),
                     'mediaType': item.attrib.get('type')
                 })
+                self.just_processed[itemId] = now
 
     def GetAndProcessXMLs(self, itemType):
         """
@@ -1450,6 +1462,8 @@ class LibrarySync(Thread):
                 continue
             else:
                 successful = self.process_newitems(item)
+                if successful:
+                    self.just_processed[str(item['ratingKey'])] = now
                 if successful and settings('FanartTV') == 'true':
                     plex_type = v.PLEX_TYPE_FROM_WEBSOCKET[item['type']]
                     if plex_type in (v.PLEX_TYPE_MOVIE, v.PLEX_TYPE_SHOW):
@@ -1534,6 +1548,7 @@ class LibrarySync(Thread):
         PMS is messing with the library items, e.g. new or changed. Put in our
         "processing queue" for later
         """
+        now = getUnixTimestamp()
         for item in data:
             if 'tv.plex' in item.get('identifier', ''):
                 # Ommit Plex DVR messages - the Plex IDs are not corresponding
@@ -1548,6 +1563,14 @@ class LibrarySync(Thread):
                 if plex_id == '0':
                     log.error('Received malformed PMS message: %s' % item)
                     continue
+                try:
+                    if (now - self.just_processed[plex_id] <
+                            self.ignore_just_processed and state != 9):
+                        log.debug('We just processed %s: ignoring' % plex_id)
+                        continue
+                except KeyError:
+                    # Item has NOT just been processed
+                    pass
                 # Have we already added this element?
                 for existingItem in self.itemsToProcess:
                     if existingItem['ratingKey'] == plex_id: