Multi-credential file store with lock support.
 
This module implements a JSON credential store where multiple
credentials can be stored in one file.  That file supports locking
both in a single process and across processes.
 
The credential themselves are keyed off of:
* client_id
* user_agent
* scope
 
The format of the stored data is like so:
{
  'file_version': 1,
  'data': [
    {
      'key': {
        'clientId': '<client id>',
        'userAgent': '<user agent>',
        'scope': '<scope>'
      },
      'credential': {
        # JSON serialized Credentials.
      }
    }
  ]
}

Modules
		base64 errno fcntl logging os json threading

Classes
		exceptions.Exception(exceptions.BaseException) Error NewerCredentialStoreError   class Error(exceptions.Exception)     Base error for this module.     Method resolution order: Error exceptions.Exception exceptions.BaseException __builtin__.object Data descriptors defined here: __weakref__ list of weak references to the object (if defined) Methods inherited from exceptions.Exception: __init__(...) x.__init__(...) initializes x; see x.__class__.__doc__ for signature Data and other attributes inherited from exceptions.Exception: __new__ = <built-in method __new__ of type object> T.__new__(S, ...) -> a new object with type S, a subtype of T Methods inherited from exceptions.BaseException: __delattr__(...) x.__delattr__('name') <==> del x.name __getattribute__(...) x.__getattribute__('name') <==> x.name __getitem__(...) x.__getitem__(y) <==> x[y] __getslice__(...) x.__getslice__(i, j) <==> x[i:j]   Use of negative indices is not supported. __reduce__(...) __repr__(...) x.__repr__() <==> repr(x) __setattr__(...) x.__setattr__('name', value) <==> x.name = value __setstate__(...) __str__(...) x.__str__() <==> str(x) __unicode__(...) Data descriptors inherited from exceptions.BaseException: __dict__ args message   class NewerCredentialStoreError(Error)     The credential store is a newer version that supported.     Method resolution order: NewerCredentialStoreError Error exceptions.Exception exceptions.BaseException __builtin__.object Data descriptors inherited from Error: __weakref__ list of weak references to the object (if defined) Methods inherited from exceptions.Exception: __init__(...) x.__init__(...) initializes x; see x.__class__.__doc__ for signature Data and other attributes inherited from exceptions.Exception: __new__ = <built-in method __new__ of type object> T.__new__(S, ...) -> a new object with type S, a subtype of T Methods inherited from exceptions.BaseException: __delattr__(...) x.__delattr__('name') <==> del x.name __getattribute__(...) x.__getattribute__('name') <==> x.name __getitem__(...) x.__getitem__(y) <==> x[y] __getslice__(...) x.__getslice__(i, j) <==> x[i:j]   Use of negative indices is not supported. __reduce__(...) __repr__(...) x.__repr__() <==> repr(x) __setattr__(...) x.__setattr__('name', value) <==> x.name = value __setstate__(...) __str__(...) x.__str__() <==> str(x) __unicode__(...) Data descriptors inherited from exceptions.BaseException: __dict__ args message

Functions
		get_credential_storage(filename, client_id, user_agent, scope, warn_on_readonly=True) Get a Storage instance for a credential.   Args:   filename: The JSON file storing a set of credentials   client_id: The client_id for the credential   user_agent: The user agent for the credential   scope: string or list of strings, Scope(s) being requested   warn_on_readonly: if True, log a warning if the store is readonly   Returns:   An object derived from client.Storage for getting/setting the   credential.

Data
		__author__ = 'jbeda@google.com (Joe Beda)' logger = <logging.Logger instance>

Author
		jbeda@google.com (Joe Beda)