100 lines
2.3 KiB
Python
100 lines
2.3 KiB
Python
"""
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Module that tracks analytics events by sending them to different
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configurable backends.
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The backends can be configured using Django settings as the example
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below::
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TRACKING_BACKENDS = {
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'tracker_name': {
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'ENGINE': 'class.name.for.backend',
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'OPTIONS': {
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'host': ... ,
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'port': ... ,
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...
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}
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}
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}
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"""
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import inspect
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from importlib import import_module
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from dogapi import dog_stats_api
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from django.conf import settings
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from track.backends import BaseBackend
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__all__ = ['send']
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backends = {}
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def _initialize_backends_from_django_settings():
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"""
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Initialize the event tracking backends according to the
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configuration in django settings
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"""
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backends.clear()
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config = getattr(settings, 'TRACKING_BACKENDS', {})
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for name, values in config.iteritems():
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# Ignore empty values to turn-off default tracker backends
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if values:
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engine = values['ENGINE']
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options = values.get('OPTIONS', {})
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backends[name] = _instantiate_backend_from_name(engine, options)
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def _instantiate_backend_from_name(name, options):
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"""
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Instantiate an event tracker backend from the full module path to
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the backend class. Useful when setting backends from configuration
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files.
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"""
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# Parse backend name
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try:
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parts = name.split('.')
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module_name = '.'.join(parts[:-1])
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class_name = parts[-1]
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except IndexError:
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raise ValueError('Invalid event track backend %s' % name)
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# Get and verify the backend class
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try:
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module = import_module(module_name)
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cls = getattr(module, class_name)
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if not inspect.isclass(cls) or not issubclass(cls, BaseBackend):
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raise TypeError
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except (ValueError, AttributeError, TypeError, ImportError):
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raise ValueError('Cannot find event track backend %s' % name)
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backend = cls(**options)
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return backend
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@dog_stats_api.timed('track.send')
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def send(event):
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"""
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Send an event object to all the initialized backends.
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"""
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dog_stats_api.increment('track.send.count')
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for name, backend in backends.iteritems():
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with dog_stats_api.timer('track.send.backend.{0}'.format(name)):
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backend.send(event)
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_initialize_backends_from_django_settings()
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