Add updated event if it's a remove

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/0.7@3047 b32b6428-25c9-4566-ad07-03861ab6144f

core/metadb/xaal/metadb/app.py

@@ -102,6 +102,11 @@ class MetaDB(object):
     def update_keys_values(self,_device,_map):
         dev = self.get_device(_device)
         updated = {}
+
+        #tmp = tools.get_uuid('35dd8ce8-beab-11e8-aaf3-82ed25e6aa00')
+        #if _device == tmp:
+        #    import pdb;pdb.set_trace()
+        
         if dev:
             # if _map is empty, remove the device
             if _map == None:
@@ -113,12 +118,13 @@ class MetaDB(object):
                 # remove item if empty
                 if _map[k] == None:
                     dev.pop(k)
+                    updated.update({k: None})
                     self.dirty = True
                 else:
                     dev.update({k:_map[k]})
                     updated.update({k:_map[k]})
                     self.dirty = True
-        else:
+        elif _map != None:
             self.cfg['devices'][str(_device)]=_map
             updated = _map
             self.dirty = True
@@ -129,7 +135,12 @@ class MetaDB(object):
             
     def periodic_save(self):
         if self.dirty:
-            self.cfg['devices'] = {key: val for key, val in sorted(self.cfg['devices'].items(), key = lambda ele: ele[0])}
+            devices = copy.copy(self.cfg['devices'])
+            for key,val in devices.items():
+                if val == None:
+                    devices.pop(key)
+            devices = {key: val for key, val in sorted(devices.items(), key = lambda ele: ele[0])}
+            self.cfg['devices'] = devices
             logger.info("Saving configuration file")
             self.cfg.write()
             self.dirty = False