gns3-server/gns3server/compute/builtin/builtin_node_factory.py

#
# Copyright (C) 2016 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


from ..error import NodeError
from .nodes.cloud import Cloud
from .nodes.nat import Nat
from .nodes.ethernet_hub import EthernetHub
from .nodes.ethernet_switch import EthernetSwitch

import logging

log = logging.getLogger(__name__)

BUILTIN_NODES = {"cloud": Cloud, "nat": Nat, "ethernet_hub": EthernetHub, "ethernet_switch": EthernetSwitch}


class BuiltinNodeFactory:

    """
    Factory to create an builtin object based on the node type.
    """

    def __new__(cls, name, node_id, project, manager, node_type, **kwargs):

        if node_type not in BUILTIN_NODES:
            raise NodeError(f"Unknown node type: {node_type}")

        return BUILTIN_NODES[node_type](name, node_id, project, manager, **kwargs)