Class ExternalAliasCommand

awscli/alias.py:395–428

class ExternalAliasCommand(BaseAliasCommand):
    def __init__(self, alias_name, alias_value, invoker=subprocess.call):
        """Command for external aliases

        Executes command external of CLI as opposed to being a proxy
        to another command.

        :type alias_name: string
        :param alias_name: The name of the alias

        :type alias_value: string
        :param alias_value: The parsed value of the alias. This can be
            retrieved from `AliasLoader.get_aliases()[alias_name]`

        :type invoker: callable
        :param invoker: Callable to run arguments of external alias. The
            signature should match that of ``subprocess.call``
        """
        super(ExternalAliasCommand, self).__init__(alias_name, alias_value)
        self._invoker = invoker

    def __call__(self, args, parsed_globals):
        command_components = [self._alias_value[1:]]
        command_components.extend(
            compat_shell_quote(a, shell=True) for a in args
        )
        command = ' '.join(command_components)
        LOG.debug(
            'Using external alias %r with value: %r to run: %r',
            self._alias_name,
            self._alias_value,
            command,
        )
        return self._invoker(command, shell=True)


class InternalAliasSubCommand(BaseInternalAliasCommand):