journal: do not convert extra args to string in JournalHandler

send() already does conversions in a type-specific way, and doing it
in journal handler would defeat those conversions. In particular, UUIDs
would be converted to early and have dashes.

Author: keszybz

systemd/journal.py

@@ -575,11 +575,10 @@ def emit(self, record):
         try:
             msg = self.format(record)
             pri = self.map_priority(record.levelno)
-            extras = {k: str(v) for k, v in self._extra.items()}
-            extras.update({
-                k: str(v) for k, v in record.__dict__.items()
-            })
+            # defaults
+            extras = self._extra.copy()
 
+            # higher priority
             if record.exc_text:
                 extras['EXCEPTION_TEXT'] = record.exc_text
 
@@ -589,6 +588,9 @@ def emit(self, record):
             if record.args:
                 extras['CODE_ARGS'] = str(record.args)
 
+            # explicit arguments — highest priority
+            extras.update(record.__dict__)
+
             self.send(msg,
                       PRIORITY=format(pri),
                       LOGGER=record.name,

systemd/test/test_journal.py

@@ -107,7 +107,6 @@ def test_journalhandler_no_message_id():
     assert all(not m.startswith('MESSAGE_ID=') for m in sender.buf[0])
 
 def test_journalhandler_message_id_on_handler():
-    pytest.xfail()
     record = logging.LogRecord('test-logger', logging.INFO, 'testpath', 1, 'test', None, None)
     sender = MockSender()
     handler = journal.JournalHandler(logging.INFO, sender_function=sender.send,
@@ -126,7 +125,6 @@ def test_journalhandler_message_id_on_handler_hex():
     assert 'MESSAGE_ID=' + TEST_MID.hex in sender.buf[0]
 
 def test_journalhandler_message_id_on_message():
-    pytest.xfail()
     record = logging.LogRecord('test-logger', logging.INFO, 'testpath', 1, 'test', None, None)
     record.__dict__['MESSAGE_ID'] = TEST_MID2
     sender = MockSender()