105 lines
3.3 KiB
Python
105 lines
3.3 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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from itertools import chain
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from django.utils.itercompat import is_iterable
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class Tags(object):
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"""
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Built-in tags for internal checks.
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"""
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admin = 'admin'
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caches = 'caches'
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compatibility = 'compatibility'
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database = 'database'
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models = 'models'
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security = 'security'
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signals = 'signals'
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templates = 'templates'
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urls = 'urls'
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class CheckRegistry(object):
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def __init__(self):
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self.registered_checks = []
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self.deployment_checks = []
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def register(self, check=None, *tags, **kwargs):
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"""
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Can be used as a function or a decorator. Register given function
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`f` labeled with given `tags`. The function should receive **kwargs
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and return list of Errors and Warnings.
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Example::
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registry = CheckRegistry()
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@registry.register('mytag', 'anothertag')
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def my_check(apps, **kwargs):
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# ... perform checks and collect `errors` ...
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return errors
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# or
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registry.register(my_check, 'mytag', 'anothertag')
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"""
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kwargs.setdefault('deploy', False)
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def inner(check):
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check.tags = tags
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if kwargs['deploy']:
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if check not in self.deployment_checks:
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self.deployment_checks.append(check)
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elif check not in self.registered_checks:
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self.registered_checks.append(check)
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return check
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if callable(check):
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return inner(check)
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else:
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if check:
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tags += (check, )
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return inner
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def run_checks(self, app_configs=None, tags=None, include_deployment_checks=False):
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"""
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Run all registered checks and return list of Errors and Warnings.
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"""
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errors = []
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checks = self.get_checks(include_deployment_checks)
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if tags is not None:
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checks = [check for check in checks
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if hasattr(check, 'tags') and set(check.tags) & set(tags)]
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else:
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# By default, 'database'-tagged checks are not run as they do more
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# than mere static code analysis.
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checks = [check for check in checks
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if not hasattr(check, 'tags') or Tags.database not in check.tags]
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for check in checks:
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new_errors = check(app_configs=app_configs)
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assert is_iterable(new_errors), (
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"The function %r did not return a list. All functions registered "
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"with the checks registry must return a list." % check)
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errors.extend(new_errors)
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return errors
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def tag_exists(self, tag, include_deployment_checks=False):
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return tag in self.tags_available(include_deployment_checks)
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def tags_available(self, deployment_checks=False):
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return set(chain(*[check.tags for check in self.get_checks(deployment_checks) if hasattr(check, 'tags')]))
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def get_checks(self, include_deployment_checks=False):
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checks = list(self.registered_checks)
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if include_deployment_checks:
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checks.extend(self.deployment_checks)
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return checks
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registry = CheckRegistry()
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register = registry.register
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run_checks = registry.run_checks
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tag_exists = registry.tag_exists
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