sprockets.mixins.metrics
========================
|Version| |Status| |Coverage| |License|
Adjust counter and timer metrics in `StatsD`_ using the same API.
The mix-in is configured through the ``tornado.web.Application`` settings
property using a key defined by the specific mix-in.
Deprecation Notice
------------------
This library is deprecated. It will not receive features or bug fixes.
Please switch to either `sprockets-influxdb`_ or `sprockets-statsd`_.
.. _sprockets-influxdb: https://github.com/sprockets/sprockets-influxdb
.. _sprockets-statsd: https://github.com/sprockets/sprockets-statsd
Documentation
-------------
https://sprocketsmixinsmetrics.readthedocs.io
Statsd Mixin
------------
The following snippet configures the StatsD mix-in from common environment
variables. This simple handler will emit a timer metric that identifies each
call to the ``get`` method as well as a separate metric for the database query.
.. code-block:: python
import os
from sprockets.mixins import mediatype
from sprockets.mixins.metrics import statsd
from tornado import web
import queries
def make_application():
application = web.Application([
web.url(r'/', MyHandler),
], **settings)
statsd.install({'namespace': 'my-application',
'host': os.environ.get('STATSD_HOST', '127.0.0.1'),
'port': os.environ.get('STATSD_PORT', '8125')})
return application
class MyHandler(statsd.StatsdMixin,
mediatype.ContentMixin,
web.RequestHandler):
def initialize(self):
super(MyHandler, self).initialize()
self.db = queries.TornadoSession(os.environ['MY_PGSQL_DSN'])
async def get(self, obj_id):
with self.execution_timer('dbquery', 'get'):
result = await self.db.query('SELECT * FROM foo WHERE id=%s',
obj_id)
self.send_response(result)
Settings
^^^^^^^^
:namespace: The namespace for the measurements
:host: The Statsd host
:port: The Statsd port
:prepend_metric_type: Optional flag to prepend bucket path with the StatsD
metric type
Development Quickstart
----------------------
.. code-block:: bash
$ python3.4 -mvenv env
$ . ./env/bin/activate
(env)$ env/bin/pip install -r requires/development.txt
(env)$ nosetests
test_metrics_with_buffer_not_flush (tests.InfluxDbTests) ... ok
test_that_cached_db_connection_is_used (tests.InfluxDbTests) ... ok
test_that_counter_is_tracked (tests.InfluxDbTests) ... ok
test_that_execution_timer_is_tracked (tests.InfluxDbTests) ... ok
test_that_http_method_call_details_are_recorded (tests.InfluxDbTests) ... ok
test_that_metric_tag_is_tracked (tests.InfluxDbTests) ... ok
test_that_add_metric_tag_is_ignored (tests.StatsdMethodTimingTests) ... ok
test_that_cached_socket_is_used (tests.StatsdMethodTimingTests) ... ok
test_that_counter_accepts_increment_value (tests.StatsdMethodTimingTests) ... ok
test_that_counter_increment_defaults_to_one (tests.StatsdMethodTimingTests) ... ok
test_that_default_prefix_is_stored (tests.StatsdMethodTimingTests) ... ok
test_that_execution_timer_records_time_spent (tests.StatsdMethodTimingTests) ... ok
test_that_http_method_call_is_recorded (tests.StatsdMethodTimingTests) ... ok
----------------------------------------------------------------------
Ran 13 tests in 3.572s
OK
(env)$ ./setup.py build_sphinx -q
running build_sphinx
(env)$ open build/sphinx/html/index.html
.. _StatsD: https://github.com/etsy/statsd
.. |Version| image:: https://img.shields.io/pypi/v/sprockets_mixins_metrics.svg
:target: https://pypi.python.org/pypi/sprockets_mixins_metrics
.. |Status| image:: https://img.shields.io/travis/sprockets/sprockets.mixins.metrics.svg
:target: https://travis-ci.org/sprockets/sprockets.mixins.metrics
.. |Coverage| image:: https://img.shields.io/codecov/c/github/sprockets/sprockets.mixins.metrics.svg
:target: https://codecov.io/github/sprockets/sprockets.mixins.metrics?branch=master
.. |License| image:: https://img.shields.io/pypi/l/sprockets_mixins_metrics.svg
:target: https://github.com/sprockets/sprockets.mixins.metrics/blob/master/LICENSE
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