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Filename :
transactions.py
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""" Copied from raven-python. Used for `DjangoIntegration(transaction_fron="raven_legacy")`. """ from __future__ import absolute_import import re if False: from django.urls.resolvers import URLResolver # type: ignore from typing import Dict from typing import List from typing import Optional from django.urls.resolvers import URLPattern # type: ignore from typing import Tuple from typing import Union from re import Pattern # type: ignore try: from django.urls import get_resolver # type: ignore except ImportError: from django.core.urlresolvers import get_resolver # type: ignore def get_regex(resolver_or_pattern): # type: (Union[URLPattern, URLResolver]) -> Pattern """Utility method for django's deprecated resolver.regex""" try: regex = resolver_or_pattern.regex except AttributeError: regex = resolver_or_pattern.pattern.regex return regex class RavenResolver(object): _optional_group_matcher = re.compile(r"\(\?\:([^\)]+)\)") _named_group_matcher = re.compile(r"\(\?P<(\w+)>[^\)]+\)") _non_named_group_matcher = re.compile(r"\([^\)]+\)") # [foo|bar|baz] _either_option_matcher = re.compile(r"\[([^\]]+)\|([^\]]+)\]") _camel_re = re.compile(r"([A-Z]+)([a-z])") _cache = {} # type: Dict[URLPattern, str] def _simplify(self, pattern): # type: (str) -> str r""" Clean up urlpattern regexes into something readable by humans: From: > "^(?P<sport_slug>\w+)/athletes/(?P<athlete_slug>\w+)/$" To: > "{sport_slug}/athletes/{athlete_slug}/" """ # remove optional params # TODO(dcramer): it'd be nice to change these into [%s] but it currently # conflicts with the other rules because we're doing regexp matches # rather than parsing tokens result = self._optional_group_matcher.sub(lambda m: "%s" % m.group(1), pattern) # handle named groups first result = self._named_group_matcher.sub(lambda m: "{%s}" % m.group(1), result) # handle non-named groups result = self._non_named_group_matcher.sub("{var}", result) # handle optional params result = self._either_option_matcher.sub(lambda m: m.group(1), result) # clean up any outstanding regex-y characters. result = ( result.replace("^", "") .replace("$", "") .replace("?", "") .replace("//", "/") .replace("\\", "") ) return result def _resolve(self, resolver, path, parents=None): # type: (URLResolver, str, Optional[List[URLResolver]]) -> Optional[str] match = get_regex(resolver).search(path) # Django < 2.0 if not match: return None if parents is None: parents = [resolver] elif resolver not in parents: parents = parents + [resolver] new_path = path[match.end() :] for pattern in resolver.url_patterns: # this is an include() if not pattern.callback: match = self._resolve(pattern, new_path, parents) if match: return match continue elif not get_regex(pattern).search(new_path): continue try: return self._cache[pattern] except KeyError: pass prefix = "".join(self._simplify(get_regex(p).pattern) for p in parents) result = prefix + self._simplify(get_regex(pattern).pattern) if not result.startswith("/"): result = "/" + result self._cache[pattern] = result return result return None def resolve( self, path, # type: str urlconf=None, # type: Union[None, Tuple[URLPattern, URLPattern, URLResolver], Tuple[URLPattern]] ): # type: (...) -> str resolver = get_resolver(urlconf) match = self._resolve(resolver, path) return match or path LEGACY_RESOLVER = RavenResolver()