Better handling of unknown UIDs

brmdoor_nfc.config.sample

@@ -1,9 +1,12 @@
 # auth_db_filename - sqlite filename of authorized UIDs, create with create_authenticator_db.py
 # lock_opened_secs - how long lock should be held open in seconds, default 5
+# unknown_uid_timeout_secs - how long to wait after scanning unknown UID - 
+#       prevents too many messages
 # log_file - logs read UIDs and when was lock opened, use - for stderr
 # log_level - minimum log level - one of debug, info, warn, error, fatal, default info
 [brmdoor]
 auth_db_filename = test_uids_db.sqlite
 #lock_opened_secs = 5
+#unknown_uid_timeout_secs = 5
 log_file = -
 #log_level = info

brmdoor_nfc_daemon.py

@@ -24,6 +24,7 @@ class BrmdoorConfig(object):
 	
 	_defaults = {
 		"lock_opened_secs": "5",
+		"unknown_uid_timeout_secs": "5",
 		"log_level": "info"
 	}
 	
@@ -39,6 +40,7 @@ class BrmdoorConfig(object):
 		
 		self.authDbFilename = self.config.get("brmdoor", "auth_db_filename")
 		self.lockOpenedSecs = self.config.getint("brmdoor", "lock_opened_secs")
+		self.unknownUidTimeoutSecs = self.config.getint("brmdoor", "unknown_uid_timeout_secs")
 		self.logFile = self.config.get("brmdoor", "log_file")
 		self.logLevel = self.convertLoglevel(self.config.get("brmdoor", "log_level"))
 	
@@ -60,6 +62,7 @@ class NFCUnlocker(object):
 		"""Create worker reading UIDs from PN53x reader.
 		"""
 		self.authenticator = UidAuthenticator(config.authDbFilename)
+		self.unknownUidTimeoutSecs = config.unknownUidTimeoutSecs
 		self.lockOpenedSecs = config.lockOpenedSecs
 
 	def run(self):
@@ -99,8 +102,8 @@ class NFCUnlocker(object):
 		
 		#no match
 		if record is None:
-			logging.info("Unknown UID")
-			time.sleep(0.3)
+			logging.info("Unknown UID %s", uid_hex)
+			time.sleep(self.unknownUidTimeoutSecs)
 			return
 		
 		logging.info("Unlocking for UID %s", record)