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path: root/src/vnet/gre/FEATURE.yaml
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---
name: Generic Routing Encapsulation
maintainer: Neale Ranns <nranns@cisco.com>
features:
  - L3 tunnels, all combinations of IPv4 and IPv6
  - Encap/Decap flags to control the copying of DSCP, ECN, DF from overlay to
    underlay and vice-versa.
  - L2 tunnels
missing:
  - GRE keys
description: "GRE"
state: production
properties: [API, CLI, MULTITHREAD]
n>, abstractmethod from six import moves class VppObject(object): """ Abstract vpp object """ __metaclass__ = ABCMeta @abstractmethod def add_vpp_config(self): """ Add the configuration for this object to vpp. """ pass @abstractmethod def query_vpp_config(self): """Query the vpp configuration. :return: True if the object is configured""" pass @abstractmethod def remove_vpp_config(self): """ Remove the configuration for this object from vpp. """ pass @abstractmethod def object_id(self): """ Return a unique string representing this object. """ pass class VppObjectRegistry(object): """ Class which handles automatic configuration cleanup. """ _shared_state = {} def __init__(self): self.__dict__ = self._shared_state if not hasattr(self, "_object_registry"): self._object_registry = [] if not hasattr(self, "_object_dict"): self._object_dict = dict() def register(self, obj, logger): """ Register an object in the registry. """ if obj.object_id() not in self._object_dict: self._object_registry.append(obj) self._object_dict[obj.object_id()] = obj logger.debug("REG: registering %s" % obj) else: logger.debug("REG: duplicate add, ignoring (%s)" % obj) def unregister_all(self, logger): """ Remove all object registrations from registry. """ logger.debug("REG: removing all object registrations") self._object_registry = [] self._object_dict = dict() def remove_vpp_config(self, logger): """ Remove configuration (if present) from vpp and then remove all objects from the registry. """ if not self._object_registry: logger.info("REG: No objects registered for auto-cleanup.") return logger.info("REG: Removing VPP configuration for registered objects") # remove the config in reverse order as there might be dependencies failed = [] for obj in reversed(self._object_registry): if obj.query_vpp_config(): logger.info("REG: Removing configuration for %s" % obj) obj.remove_vpp_config() if obj.query_vpp_config(): failed.append(obj) else: logger.info( "REG: Skipping removal for %s, configuration not present" % obj) self.unregister_all(logger) if failed: logger.error("REG: Couldn't remove configuration for object(s):") for obj in failed: logger.error(moves.reprlib.repr(obj)) raise Exception("Couldn't remove configuration for object(s): %s" % (", ".join(str(x) for x in failed)))