def insert_before(self, name, credential_provider):
"""
Inserts a new instance of ``CredentialProvider`` into the chain that
will be tried before an existing one.
:param name: The short name of the credentials you'd like to insert the
new credentials before. (ex. ``env`` or ``config``). Existing names
& ordering can be discovered via ``self.available_methods``.
:type name: string
:param cred_instance: An instance of the new ``Credentials`` object
you'd like to add to the chain.
:type cred_instance: A subclass of ``Credentials``
"""
try:
offset = [p.METHOD for p in self.providers].index(name)
except ValueError:
raise UnknownCredentialError(name=name)
self.providers.insert(offset, credential_provider)
credentials.py 文件源码
python
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