StackStorm /
st2
| Conditions | 15 |
| Total Lines | 93 |
| Lines | 0 |
| Ratio | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
Complex classes like TokenController._handle_standalone_auth() often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
| 1 | # Licensed to the StackStorm, Inc ('StackStorm') under one or more |
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| 92 | def _handle_standalone_auth(self, request, **kwargs): |
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| 93 | authorization = pecan.request.authorization |
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| 94 | |||
| 95 | auth_backend = self._auth_backend.__class__.__name__ |
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| 96 | remote_addr = pecan.request.remote_addr |
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| 97 | extra = {'auth_backend': auth_backend, 'remote_addr': remote_addr} |
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| 98 | |||
| 99 | if not authorization: |
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| 100 | LOG.audit('Authorization header not provided', extra=extra) |
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| 101 | self._abort_request() |
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| 102 | return |
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| 103 | |||
| 104 | auth_type, auth_value = authorization |
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| 105 | if auth_type.lower() not in ['basic']: |
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| 106 | extra['auth_type'] = auth_type |
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| 107 | LOG.audit('Unsupported authorization type: %s' % (auth_type), extra=extra) |
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| 108 | self._abort_request() |
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| 109 | return |
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| 110 | |||
| 111 | try: |
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| 112 | auth_value = base64.b64decode(auth_value) |
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| 113 | except Exception: |
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| 114 | LOG.audit('Invalid authorization header', extra=extra) |
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| 115 | self._abort_request() |
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| 116 | return |
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| 117 | |||
| 118 | split = auth_value.split(':') |
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| 119 | if len(split) != 2: |
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| 120 | LOG.audit('Invalid authorization header', extra=extra) |
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| 121 | self._abort_request() |
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| 122 | return |
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| 123 | |||
| 124 | username, password = split |
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| 125 | result = self._auth_backend |
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| 126 | |||
| 127 | result = self._auth_backend.authenticate(username=username, password=password) |
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| 128 | if result is True: |
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| 129 | ttl = getattr(request, 'ttl', None) |
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| 130 | impersonate_user = getattr(request, 'user', None) |
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| 131 | |||
| 132 | if impersonate_user is not None: |
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| 133 | # check this is a service account |
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| 134 | if not User.get_by_name(username).is_service: |
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| 135 | message = "Current user is not a service and cannot " \ |
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| 136 | "request impersonated tokens" |
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| 137 | self._abort_request(status_code=http_client.BAD_REQUEST, |
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| 138 | message=message) |
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| 139 | return |
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| 140 | username = impersonate_user |
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| 141 | else: |
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| 142 | impersonate_user = getattr(request, 'impersonate_user', None) |
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| 143 | nickname_origin = getattr(request, 'nickname_origin', None) |
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| 144 | if impersonate_user is not None: |
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| 145 | try: |
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| 146 | # check this is a service account |
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| 147 | if not User.get_by_name(username).is_service: |
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| 148 | raise NotServiceUserError() |
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| 149 | username = User.get_by_nickname(impersonate_user, |
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| 150 | nickname_origin).name |
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| 151 | except NotServiceUserError: |
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| 152 | message = "Current user is not a service and cannot " \ |
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| 153 | "request impersonated tokens" |
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| 154 | self._abort_request(status_code=http_client.BAD_REQUEST, |
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| 155 | message=message) |
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| 156 | return |
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| 157 | except UserNotFoundError: |
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| 158 | message = "Could not locate user %s@%s" % \ |
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| 159 | (impersonate_user, nickname_origin) |
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| 160 | self._abort_request(status_code=http_client.BAD_REQUEST, |
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| 161 | message=message) |
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| 162 | return |
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| 163 | except NoNicknameOriginProvidedError: |
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| 164 | message = "Nickname origin is not provided for nickname '%s'" % \ |
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| 165 | impersonate_user |
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| 166 | self._abort_request(status_code=http_client.BAD_REQUEST, |
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| 167 | message=message) |
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| 168 | return |
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| 169 | except AmbiguousUserError: |
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| 170 | message = "%s@%s matched more than one username" % \ |
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| 171 | (impersonate_user, nickname_origin) |
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| 172 | self._abort_request(status_code=http_client.BAD_REQUEST, |
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| 173 | message=message) |
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| 174 | return |
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| 175 | try: |
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| 176 | token = self._create_token_for_user(username=username, ttl=ttl) |
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| 177 | return self._process_successful_response(token=token) |
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| 178 | except TTLTooLargeException as e: |
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| 179 | self._abort_request(status_code=http_client.BAD_REQUEST, |
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| 180 | message=e.message) |
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| 181 | return |
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| 182 | |||
| 183 | LOG.audit('Invalid credentials provided', extra=extra) |
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| 184 | self._abort_request() |
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| 185 | |||
| 198 |
