Make better use of vlogging.

frontends/ycdl_flask/backend/common.py

@@ -8,6 +8,9 @@ import time
 
 from voussoirkit import flasktools
 from voussoirkit import pathclass
+from voussoirkit import vlogging
+
+log = vlogging.getLogger(__name__)
 
 import ycdl
 
@@ -61,7 +64,7 @@ def init_ycdldb(*args, **kwargs):
 def refresher_thread(rate):
     while True:
         time.sleep(rate)
-        print('Starting refresh job.')
+        log.info('Starting refresh job.')
         thread_kwargs = {'force': False, 'skip_failures': True}
         refresh_job = threading.Thread(
             target=ycdldb.refresh_all_channels,
@@ -71,6 +74,6 @@ def refresher_thread(rate):
         refresh_job.start()
 
 def start_refresher_thread(rate):
-    print(f'Starting refresher thread, once per {rate} seconds.')
+    log.info('Starting refresher thread, once per %d seconds.', rate)
     refresher = threading.Thread(target=refresher_thread, args=[rate], daemon=True)
     refresher.start()

frontends/ycdl_flask/ycdl_flask_dev.py

@@ -6,12 +6,6 @@ python ycdl_flask_dev.py [port]
 '''
 import gevent.monkey; gevent.monkey.patch_all()
 
-import logging
-handler = logging.StreamHandler()
-log_format = '{levelname}:ycdl.{module}.{funcName}: {message}'
-handler.setFormatter(logging.Formatter(log_format, style='{'))
-logging.getLogger().addHandler(handler)
-
 import argparse
 import gevent.pywsgi
 import os
@@ -21,6 +15,8 @@ from voussoirkit import operatornotify
 from voussoirkit import pathclass
 from voussoirkit import vlogging
 
+log = vlogging.getLogger(__name__, 'ycdl_flask_dev')
+
 import ycdl
 import youtube_credentials
 import backend
@@ -33,7 +29,6 @@ site.debug = True
 site = backend.site
 
 HTTPS_DIR = pathclass.Path(__file__).parent.with_child('https')
-LOG_LEVEL = vlogging.NOTSET
 
 def ycdl_flask_launch(
         *,
@@ -63,21 +58,23 @@ def ycdl_flask_launch(
         site.localhost_only = True
 
     youtube_core = ycdl.ytapi.Youtube(youtube_credentials.get_youtube_key())
-    backend.common.init_ycdldb(youtube_core, create=create, log_level=LOG_LEVEL)
+    backend.common.init_ycdldb(youtube_core, create=create)
-    ycdl.ytrss.log.setLevel(LOG_LEVEL)
-
-    if refresh_rate is not None:
-        backend.common.start_refresher_thread(refresh_rate)
 
     message = f'Starting server on port {port}, pid={os.getpid()}.'
     if use_https:
         message += ' (https)'
-    print(message)
+    log.info(message)
+
+    if refresh_rate is None:
+        log.info('No background refresher thread because --refresh-rate was not passed.')
+    else:
+        backend.common.start_refresher_thread(refresh_rate)
 
     try:
         http.serve_forever()
     except KeyboardInterrupt:
-        pass
+        log.info('Goodbye')
+        return 0
 
 def ycdl_flask_launch_argparse(args):
     return ycdl_flask_launch(
@@ -88,11 +85,9 @@ def ycdl_flask_launch_argparse(args):
         use_https=args.use_https,
     )
 
+@vlogging.main_decorator
 @operatornotify.main_decorator(subject='YCDL', notify_every_line=True)
 def main(argv):
-    global LOG_LEVEL
-    (LOG_LEVEL, argv) = vlogging.get_level_by_argv(argv)
-
     parser = argparse.ArgumentParser(description=__doc__)
 
     parser.add_argument('port', nargs='?', type=int, default=5000)

ycdl/ycdldb.py

@@ -526,7 +526,6 @@ class YCDLDB(
             youtube,
             create=True,
             data_directory=None,
-            log_level=vlogging.NOTSET,
             skip_version_check=False,
         ):
         super().__init__()
@@ -543,8 +542,6 @@ class YCDLDB(
 
         # LOGGING
         self.log = vlogging.getLogger(f'{__name__}:{self.data_directory.absolute_path}')
-        self.log.setLevel(log_level)
-        self.youtube.log.setLevel(log_level)
 
         # DATABASE
         self.database_filepath = self.data_directory.with_child(constants.DEFAULT_DBNAME)