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#
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# Copyright (c) 2020 Red Hat, Inc.
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#
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# This file is part of nmstate
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation, either version 2.1 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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# This file will hold the common code shared by linux bridge and ovs bridge.
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from operator import itemgetter
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from libnmstate.schema import Bridge
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from libnmstate.schema import LinuxBridge
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from ..state import merge_dict
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from .base_iface import BaseIface
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READ_ONLY_OPTIONS = [
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LinuxBridge.Options.HELLO_TIMER,
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LinuxBridge.Options.GC_TIMER,
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]
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class BridgeIface(BaseIface):
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BRPORT_OPTIONS_METADATA = "_brport_options"
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@property
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def is_master(self):
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return True
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@property
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def is_virtual(self):
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return True
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def sort_slaves(self):
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if self.slaves:
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self.raw[Bridge.CONFIG_SUBTREE][Bridge.PORT_SUBTREE].sort(
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key=itemgetter(Bridge.Port.NAME)
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)
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@property
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def _bridge_config(self):
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return self.raw.get(Bridge.CONFIG_SUBTREE, {})
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@property
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def port_configs(self):
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return self._bridge_config.get(Bridge.PORT_SUBTREE, [])
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def merge(self, other):
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super().merge(other)
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self._merge_bridge_ports(other)
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def _merge_bridge_ports(self, other):
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"""
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Given a bridge desired state, and it's current state, merges
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those together.
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This extension of the interface merging mechanism simplifies the user's
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life in scenarios where the user wants to partially update the bridge's
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configuration - e.g. update only the bridge's port STP configuration -
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since it enables the user to simply specify the updated values rather
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than the full current state + the updated value.
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"""
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if self._bridge_config.get(Bridge.PORT_SUBTREE) == []:
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# User explictly defined empty list for ports and expecting
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# removal of all ports.
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return
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other_indexed_ports = _index_port_configs(other.port_configs)
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self_indexed_ports = _index_port_configs(self.port_configs)
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# When defined, user need to specify the whole list of ports.
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for port_iface_name in (
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other_indexed_ports.keys() & self_indexed_ports.keys()
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):
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merge_dict(
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self_indexed_ports[port_iface_name],
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other_indexed_ports[port_iface_name],
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)
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self.raw[Bridge.CONFIG_SUBTREE][Bridge.PORT_SUBTREE] = list(
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self_indexed_ports.values()
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)
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def pre_edit_validation_and_cleanup(self):
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self.sort_slaves()
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super().pre_edit_validation_and_cleanup()
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def state_for_verify(self):
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self._normalize_linux_bridge_port_vlan()
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self._remove_read_only_bridge_options()
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state = super().state_for_verify()
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return state
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def config_changed_slaves(self, cur_iface):
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changed_slaves = []
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cur_indexed_ports = _index_port_configs(cur_iface.port_configs)
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for port_config in self.port_configs:
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port_name = port_config[Bridge.Port.NAME]
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cur_port_config = cur_indexed_ports.get(port_name)
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if cur_port_config != port_config:
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changed_slaves.append(port_name)
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return changed_slaves
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def _normalize_linux_bridge_port_vlan(self):
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"""
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Set LinuxBridge.Port.VLAN_SUBTREE as {} when not defined.
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"""
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for port_config in self.port_configs:
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if not port_config.get(Bridge.Port.VLAN_SUBTREE):
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port_config[Bridge.Port.VLAN_SUBTREE] = {}
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def _remove_read_only_bridge_options(self):
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for key in READ_ONLY_OPTIONS:
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self._bridge_config.get(LinuxBridge.OPTIONS_SUBTREE, {}).pop(
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key, None
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)
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def _index_port_configs(port_configs):
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return {port[Bridge.Port.NAME]: port for port in port_configs}
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