Utils

pymco.utils

python-mcollective utils that don’t fit elsewhere.

pymco.utils.import_class(import_path)

Import a class based on given dotted import path string.

It just splits the import path in order to geth the module and class names, then it just calls to __import__() with the module name and getattr() with the module and the class name.

Parameters:import_path – dotted import path string. Returns:the class once imported. Raise:ImportError if the class can’t be imported.

pymco.utils.import_object(import_path, *args, **kwargs)

Import a class and instantiate it.

Uses import_class() in order to import the given class by its import path and instantiate it using given positional and keyword arguments.

Parameters:

• import_path – Same argument as import_class().
• *args – extra pPositional arguments for object instantiation.
• **kwargs – extra Keyword arguments for object instantiation.

Returns:

an object the imported class initialized with given arguments.

pymco.utils.load_rsa_key(filename)

Read filename and try to load its contents as an RSA key.

Wrapper over Crypto.PublicKey.RSA.importKey(), just getting the file content first and then just loading the key from it.

Parameters:filename – RSA key file name. Returns:loaded RSA key.

pymco.utils.pem_to_der(pem)

Convert an ascii-armored PEM certificate to a DER encoded certificate

See http://stackoverflow.com/a/12921889 for details. Python ssl module has it own method for this, but it shouldn’t work properly and this method is required.

Parameters:pem (str) – The PEM certificate as string.