controllers.py 文件源码

def add(self, fail_on_error=True, fail_on_invalid_params=True, **kwargs):
        """Add new Cloud to the database

        This is the only cloud controller subclass that overrides the `add`
        method of `BaseMainController`.

        This is only expected to be called by `Cloud.add` classmethod to create
        a cloud. Fields `owner` and `title` are already populated in
        `self.cloud`. The `self.cloud` model is not yet saved.

        If appropriate kwargs are passed, this can currently also act as a
        shortcut to also add the first machine on this dummy cloud.

        """
        # Attempt to save.
        try:
            self.cloud.save()
        except me.ValidationError as exc:
            raise BadRequestError({'msg': exc.message,
                                   'errors': exc.to_dict()})
        except me.NotUniqueError:
            raise CloudExistsError("Cloud with name %s already exists"
                                   % self.cloud.title)

        # Add machine.
        if kwargs:
            try:
                self.add_machine_wrapper(
                    self.cloud.title, fail_on_error=fail_on_error,
                    fail_on_invalid_params=fail_on_invalid_params, **kwargs
                )
            except Exception as exc:
                if fail_on_error:
                    self.cloud.delete()
                raise