exception decorator and mail send for errors and changes to rec state checker

backend/recorder_adapters/extron_smp.py

@@ -2,8 +2,9 @@ import logging
 
 from backend import LrcException
 from backend.recorder_adapters import telnetlib, TelnetAdapter, RecorderAdapter
+from backend.tools.exception_decorator import exception_decorator
 
-logger = logging.getLogger()
+logger = logging.getLogger("lrc.recorder_adapters.extron_smp")
 
 RECORDER_MODEL_NAME = "SMP 351 / 352"
 VERSION = "0.9.0"
@@ -28,11 +29,13 @@ class SMP(TelnetAdapter, RecorderAdapter):
             self._login()
 
     def _login(self):
-        print("Connecting to {} ...".format(self.address))
+        logger.info("Connecting to {} ...".format(self.address))
         try:
             self.tn = telnetlib.Telnet(self.address)
         except TimeoutError as e:
             raise LrcException(str(e))
+        except ConnectionRefusedError as e:
+            raise LrcException(str(e))
         self.tn.read_until("\r\nPassword:")
         # password = getpass.getpass()
         password = self.admin_pw
@@ -371,6 +374,7 @@ class SMP(TelnetAdapter, RecorderAdapter):
         self.tn.write("{}Y2RCDR\n".format(self.esc_char))
         return TelnetAdapter._get_response_str(self.tn.read_until_non_empty_line())
 
+    @exception_decorator(ConnectionError)
     def get_recording_status(self):
         """
         Status may be one of: