A common WSGI stack
Project description
Talisker is a runtime for your wsgi app that aims to provide a common platform for your python services.
tl;dr
Simply run your wsgi app with talisker as if it was gunicorn.:
talisker app:wsgi -c config.py ...
Talisker will wrap your app in a some simple WSGI middleware, and configure logging to output structured logging like so:
logger = logging.getLogger('app')
logger.info('something happened', extra={'context': 'I haz it'})
will output:
2016-01-13 10:24:07.357Z INFO app "something happened" svc.context="I haz it" request_id=...
It also exposes some status endpoints you can use, go to the /_status/ url on your app to see them.
This all works out of the box by using the talisker runner instead of gunicorn’s, and there are many more features you can use too.
Elevator Pitch
Talisker is based on a number of standard python tools:
stdlib logging for logs
gunicorn for a wsgi runner
requests for http requests
statsd for metrics (and optionally, prometheus_client)
sentry for errors
werkzeug for thread locals and wsgi utilities
It also supports additionaly optional tools:
celery for async tasks
prometheus as an alternate metrics tool
It’s main job is to integrate and configure all the above in a single tool, for use in both dev and production, which provides a standard set of features out of the box:
drop-in replacement for gunicorn as a wsgi runner
standardised structured logging on top of python stdlib logging
request id tracing
standard set of status endpoints for your app
easier configuration via env vars
metrics for everything
deep sentry integration (WIP)
All the above are available by just using the talisker entry point script, rather than gunicorn.
In addition, with a small amount of effort, your app can benefit from additional features:
add structured logging tags to your application logs
simple deeper nagios checks - just implement a /_status/check url in your app
per-thread requests connection pool management
Additionally, talisker provides additional tools for integrating with your infrastructure:
grok filters for log parsing
rsyslog templates and config for log shipping (TODO)
Talisker is opinionated, and derived directly from the authors’ needs and as such not currently very configurable. However, PR’s are very welcome!
For more information, see The Documentation, which should be found at:
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