gergely/flask-logging-extras
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Allow the logger to be configured without an active app

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Gergely Polonkai
2018-01-31 14:13:59 +01:00
parent 07dc35cec2
commit e2e2937615
1 changed files with 44 additions and 18 deletions
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62
flask_logging_extras/__init__.py
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@@ -128,6 +128,10 @@ class FlaskExtraLogger(logging.getLoggerClass()):
super(FlaskExtraLogger, self).__init__(*args, **kwargs)
if hasattr(self.__class__, '__default_config__'):
self.config = self.__class__.__default_config__
self.init_from_config()
def _log(self, *args, **kwargs):
if has_app_context() and self.app is None:
self.init_app(current_app)
@@ -158,6 +162,42 @@ class FlaskExtraLogger(logging.getLoggerClass()):
'reserved for internal use.'
.format(keyword=word))
def init_from_config(self):
"""Intialize the logger class from a Flask config dict
The class reads its necessary configuration from the config provided.
If the application doesn’t call this, or doesn’t have the `FLASK_LOGGING_EXTRAS_KEYWORDS`
in its config, no extra functionality will be added.
:raises ValueError: if the app tries to register a keyword that is
reserved for internal use
"""
if not isinstance(self.config, dict):
self.config = {
'FLASK_LOGGING_EXTRAS_KEYWORDS': getattr(self.config, 'FLASK_LOGGING_EXTRAS_KEYWORDS', {}),
'FLASK_LOGGING_EXTRAS_BLUEPRINT': getattr(self.config, 'FLASK_LOGGING_EXTRAS_BLUEPRINT', (None, '<app>', '<not a request>',)),
}
self.config.setdefault('FLASK_LOGGING_EXTRAS_KEYWORDS', {})
self.config.setdefault('FLASK_LOGGING_EXTRAS_BLUEPRINT',
(None, '<app>', '<not a request>'))
for kw in self.config['FLASK_LOGGING_EXTRAS_KEYWORDS']:
self._check_reserved_word(kw)
self._check_reserved_word(
self.config['FLASK_LOGGING_EXTRAS_BLUEPRINT'][0])
self._valid_keywords = self.config['FLASK_LOGGING_EXTRAS_KEYWORDS']
(
self._blueprint_var,
self._blueprint_app,
self._blueprint_norequest,
) = self.config['FLASK_LOGGING_EXTRAS_BLUEPRINT']
def init_app(self, app):
"""
Intialize the logger class with a Flask application
@@ -176,26 +216,11 @@ class FlaskExtraLogger(logging.getLoggerClass()):
"""
self.app = app
app.config.setdefault('FLASK_LOGGING_EXTRAS_KEYWORDS', {})
app.config.setdefault('FLASK_LOGGING_EXTRAS_BLUEPRINT',
(None, '<app>', '<not a request>'))
for kw in app.config['FLASK_LOGGING_EXTRAS_KEYWORDS']:
self._check_reserved_word(kw)
self._check_reserved_word(
app.config['FLASK_LOGGING_EXTRAS_BLUEPRINT'][0])
self._valid_keywords = app.config['FLASK_LOGGING_EXTRAS_KEYWORDS']
(
self._blueprint_var,
self._blueprint_app,
self._blueprint_norequest,
) = app.config['FLASK_LOGGING_EXTRAS_BLUEPRINT']
self.config = app.config
self.init_from_config()
def register_logger_class(cls=FlaskExtraLogger):
def register_logger_class(cls=FlaskExtraLogger, config=None):
"""
Register a new logger class
@@ -224,5 +249,6 @@ def register_logger_class(cls=FlaskExtraLogger):
old_class = logging.getLoggerClass()
logging.setLoggerClass(cls)
cls.__default_config__ = config
return old_class