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Update docs, revert tornado-app.py example, add new one
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3 changed files with 101 additions and 11 deletions
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@ -17,3 +17,16 @@ the custom filter and format string into the logging infrastructure and
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insert context easily with :class:`logging.LoggerAdapter`.
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.. literalinclude:: ../examples/tornado-app.py
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Tornado Application JSON Logging
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--------------------------------
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If you're looking to log Tornado requests as JSON, the
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:class:`sprockets.logging.JSONRequestFormatter` class works in conjunction with
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the :method:`tornado_log_function` method to output all Tornado log entries as
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JSON objects. In the following example, the dictionary-based configuration is
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expanded upon to include specify the :class:`sprockets.logging.JSONRequestFormatter`
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as the formatter and passes :method:`tornado_log_function` in as the ``log_function``
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when creating the Tornado application.
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.. literalinclude:: ../examples/tornado-json-logger.py
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@ -13,30 +13,31 @@ LOG_CONFIG = {
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'class': 'logging.StreamHandler',
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'stream': 'ext://sys.stdout',
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'formatter': 'simple',
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'filters': ['context']
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}
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'filters': ['context'],
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},
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},
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'formatters': {
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'simple': {
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'()': sprockets.logging.JSONRequestFormatter
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}
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'class': 'logging.Formatter',
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'format': '%(levelname)s %(name)s: %(message)s [%(context)s]',
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},
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},
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'filters': {
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'context': {
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'()': 'sprockets.logging.ContextFilter',
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'properties': ['context']
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}
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'properties': ['context'],
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},
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},
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'loggers': {
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'tornado': {
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'level': 'DEBUG'
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}
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'level': 'DEBUG',
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},
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},
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'root': {
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'handlers': ['console'],
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'level': 'DEBUG'
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'level': 'DEBUG',
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},
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'incremental': False
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'incremental': False,
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}
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@ -68,7 +69,7 @@ if __name__ == '__main__':
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app = web.Application([
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web.url('/(?P<object_id>\w+)', RequestHandler,
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kwargs={'parent_log': logger}),
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], log_function=sprockets.logging.tornado_log_function)
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])
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app.listen(8000)
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signal.signal(signal.SIGINT, sig_handler)
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signal.signal(signal.SIGTERM, sig_handler)
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76
examples/tornado-json-logger.py
Normal file
76
examples/tornado-json-logger.py
Normal file
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@ -0,0 +1,76 @@
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import logging.config
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import signal
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import uuid
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from tornado import ioloop, web
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import sprockets.logging
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LOG_CONFIG = {
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'version': 1,
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'handlers': {
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'console': {
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'class': 'logging.StreamHandler',
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'stream': 'ext://sys.stdout',
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'formatter': 'simple',
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'filters': ['context']
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}
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},
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'formatters': {
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'simple': {
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'()': sprockets.logging.JSONRequestFormatter
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}
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},
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'filters': {
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'context': {
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'()': 'sprockets.logging.ContextFilter',
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'properties': ['context']
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}
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},
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'loggers': {
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'tornado': {
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'level': 'DEBUG'
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}
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},
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'root': {
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'handlers': ['console'],
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'level': 'DEBUG'
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},
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'incremental': False
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}
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class RequestHandler(web.RequestHandler):
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def __init__(self, *args, **kwargs):
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self.parent_log = kwargs.pop('parent_log')
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super(RequestHandler, self).__init__(*args, **kwargs)
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def prepare(self):
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uniq_id = self.request.headers.get('X-UniqID', uuid.uuid4().hex)
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self.logger = logging.LoggerAdapter(
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self.parent_log.getChild('RequestHandler'),
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extra={'context': uniq_id})
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def get(self, object_id):
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self.logger.debug('fetchin %s', object_id)
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self.set_status(200)
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return self.finish()
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def sig_handler(signo, frame):
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logging.info('caught signal %d, stopping IO loop', signo)
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iol = ioloop.IOLoop.instance()
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iol.add_callback_from_signal(iol.stop)
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if __name__ == '__main__':
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logging.config.dictConfig(LOG_CONFIG)
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logger = logging.getLogger('app')
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app = web.Application([
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web.url('/(?P<object_id>\w+)', RequestHandler,
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kwargs={'parent_log': logger}),
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], log_function=sprockets.logging.tornado_log_function)
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app.listen(8000)
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signal.signal(signal.SIGINT, sig_handler)
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signal.signal(signal.SIGTERM, sig_handler)
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ioloop.IOLoop.instance().start()
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logger.info('IO loop stopped, exiting')
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