The magnumclient.common.cliutils Module

exception magnumclient.common.cliutils.MissingArgs(missing)

Bases: exceptions.Exception

Supplied arguments are not sufficient for calling a function.

magnumclient.common.cliutils.add_arg(func, *args, **kwargs)

Bind CLI arguments to a shell.py do_foo function.

magnumclient.common.cliutils.arg(*args, **kwargs)

Decorator for CLI args.

Example:

>>> @arg("name", help="Name of the new entity")
... def entity_create(args):
...     pass
magnumclient.common.cliutils.deprecated(message)

Decorator for marking a call as deprecated by printing a given message.

Example: >>> @deprecated(“Bay functions are deprecated and should be replaced by ” ... “calls to cluster”) ... def bay_create(args): ... pass

magnumclient.common.cliutils.deprecation_map(dep_map)

Decorator for applying a map of deprecating arguments to a function.

The map connects deprecating arguments and their replacements. The shell.py script uses this map to create mutually exclusive argument groups in argparse and also prints a deprecation warning telling the user to switch to the updated argument.

NOTE: This decorator MUST be the outermost in the chain of argument decorators to work correctly.

Example usage: >>> @deprecation_map({ “old-argument”: “new-argument” }) ... @args(“old-argument”, required=True) ... @args(“new-argument”, required=True) ... def do_command_line_stuff(): ... pass

magnumclient.common.cliutils.deprecation_message(preamble, new_name)
magnumclient.common.cliutils.env(*args, **kwargs)

Returns the first environment variable set.

If all are empty, defaults to ‘’ or keyword arg default.

magnumclient.common.cliutils.exit(msg='')
magnumclient.common.cliutils.get_password(max_password_prompts=3)

Read password from TTY.

magnumclient.common.cliutils.get_service_type(f)

Retrieves service type from function.

magnumclient.common.cliutils.isunauthenticated(func)

Checks if the function does not require authentication.

Mark such functions with the @unauthenticated decorator.

Returns:bool
magnumclient.common.cliutils.keys_and_vals_to_strs(dictionary)

Recursively convert a dictionary’s keys and values to strings.

Parameters:dictionary – dictionary whose keys/vals are to be converted to strs
magnumclient.common.cliutils.make_field_formatter(attr, filters=None)

Given an object attribute.

Return a formatted field name and a formatter suitable for passing to print_list. Optionally pass a dict mapping attribute names to a function. The function will be passed the value of the attribute and should return the string to display.

magnumclient.common.cliutils.pretty_choice_list(l)
magnumclient.common.cliutils.print_dict(dct, dict_property='Property', wrap=0)

Print a dict as a table of two columns.

Parameters:
  • dct – dict to print
  • dict_property – name of the first column
  • wrap – wrapping for the second column
magnumclient.common.cliutils.print_list(objs, fields, formatters=None, sortby_index=0, mixed_case_fields=None, field_labels=None)

Print a list or objects as a table, one row per object.

Parameters:
  • objs – iterable of Resource
  • fields – attributes that correspond to columns, in order
  • formatters – dict of callables for field formatting
  • sortby_index – index of the field for sorting table rows
  • mixed_case_fields – fields corresponding to object attributes that have mixed case names (e.g., ‘serverId’)
  • field_labels – Labels to use in the heading of the table, default to fields.
magnumclient.common.cliutils.service_type(stype)

Adds ‘service_type’ attribute to decorated function.

Usage:

@service_type('volume')
def mymethod(f):
...
magnumclient.common.cliutils.unauthenticated(func)

Adds ‘unauthenticated’ attribute to decorated function.

Usage:

>>> @unauthenticated
... def mymethod(f):
...     pass
magnumclient.common.cliutils.validate_args(fn, *args, **kwargs)

Check that the supplied args are sufficient for calling a function.

>>> validate_args(lambda a: None)
Traceback (most recent call last):
    ...
MissingArgs: Missing argument(s): a
>>> validate_args(lambda a, b, c, d: None, 0, c=1)
Traceback (most recent call last):
    ...
MissingArgs: Missing argument(s): b, d
Parameters:
  • fn – the function to check
  • arg – the positional arguments supplied
  • kwargs – the keyword arguments supplied