273 lines
9.9 KiB
Python
273 lines
9.9 KiB
Python
# Copyright 2017 Intel Corporation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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from osc_lib.command import command
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from osc_lib import exceptions
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from osc_lib import utils
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from osc_lib.utils import columns as column_util
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from neutronclient._i18n import _
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LOG = logging.getLogger(__name__)
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resource = 'service_graph'
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_attr_map = (
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('id', 'ID', column_util.LIST_BOTH),
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('name', 'Name', column_util.LIST_BOTH),
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('port_chains', 'Branching Points', column_util.LIST_BOTH),
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('description', 'Description', column_util.LIST_LONG_ONLY),
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('project_id', 'Project', column_util.LIST_LONG_ONLY),
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)
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_attr_map_dict = {
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'id': 'ID',
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'name': 'Name',
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'description': 'Description',
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'port_chains': 'Branching Points',
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'tenant_id': 'Project',
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'project_id': 'Project',
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}
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class CreateSfcServiceGraph(command.ShowOne):
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"""Create a service graph."""
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def get_parser(self, prog_name):
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parser = super(CreateSfcServiceGraph, self).get_parser(prog_name)
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parser.add_argument(
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'name',
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metavar='<name>',
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help=_('Name of the service graph.'))
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parser.add_argument(
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'--description',
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help=_('Description for the service graph.'))
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parser.add_argument(
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'--branching-point',
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metavar='SRC_CHAIN:DST_CHAIN_1,DST_CHAIN_2,DST_CHAIN_N',
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dest='branching_points',
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action='append',
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default=[], required=True,
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help=_('Service graph branching point: the key is the source '
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'Port Chain while the value is a list of destination '
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'Port Chains. This option can be repeated.'))
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return parser
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def take_action(self, parsed_args):
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client = self.app.client_manager.network
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attrs = _get_common_attrs(self.app.client_manager, parsed_args)
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try:
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obj = client.create_sfc_service_graph(**attrs)
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display_columns, columns = \
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utils.get_osc_show_columns_for_sdk_resource(
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obj, _attr_map_dict, ['location', 'tenant_id'])
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data = utils.get_dict_properties(obj, columns)
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return display_columns, data
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except Exception as e:
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msg = (_("Failed to create service graph using '%(pcs)s': %(e)s")
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% {'pcs': parsed_args.branching_points, 'e': e})
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raise exceptions.CommandError(msg)
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class SetSfcServiceGraph(command.Command):
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_description = _("Set service graph properties")
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def get_parser(self, prog_name):
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parser = super(SetSfcServiceGraph, self).get_parser(prog_name)
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parser.add_argument(
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'--name',
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metavar='<name>',
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help=_('Name of the service graph'))
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parser.add_argument(
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'--description',
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metavar='<description>',
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help=_('Description for the service graph'))
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parser.add_argument(
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'service_graph',
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metavar='<service-graph>',
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help=_("Service graph to modify (name or ID)")
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)
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return parser
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def take_action(self, parsed_args):
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client = self.app.client_manager.network
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service_graph_id = client.find_sfc_service_graph(
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parsed_args.service_graph, ignore_missing=False)['id']
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attrs = _get_common_attrs(self.app.client_manager, parsed_args,
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is_create=False)
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try:
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client.update_sfc_service_graph(service_graph_id, **attrs)
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except Exception as e:
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msg = (_("Failed to update service graph "
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"'%(service_graph)s': %(e)s")
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% {'service_graph': parsed_args.service_graph, 'e': e})
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raise exceptions.CommandError(msg)
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class DeleteSfcServiceGraph(command.Command):
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"""Delete a given service graph."""
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def get_parser(self, prog_name):
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parser = super(DeleteSfcServiceGraph, self).get_parser(prog_name)
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parser.add_argument(
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'service_graph',
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metavar="<service-graph>",
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nargs='+',
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help=_("ID or name of the service graph(s) to delete.")
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)
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return parser
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def take_action(self, parsed_args):
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client = self.app.client_manager.network
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result = 0
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for sg in parsed_args.service_graph:
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try:
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sg_id = client.find_sfc_service_graph(
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sg, ignore_missing=False)['id']
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client.delete_sfc_service_graph(sg_id)
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except Exception as e:
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result += 1
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LOG.error(_("Failed to delete service graph with name "
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"or ID '%(sg)s': %(e)s"),
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{'sg': sg, 'e': e})
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if result > 0:
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total = len(parsed_args.service_graph)
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msg = (_("%(result)s of %(total)s service graph(s) "
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"failed to delete.") % {'result': result,
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'total': total})
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raise exceptions.CommandError(msg)
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class ListSfcServiceGraph(command.Lister):
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_description = _("List service graphs")
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def get_parser(self, prog_name):
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parser = super(ListSfcServiceGraph, self).get_parser(prog_name)
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parser.add_argument(
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'--long',
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action='store_true',
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default=False,
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help=_("List additional fields in output")
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)
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return parser
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def take_action(self, parsed_args):
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client = self.app.client_manager.network
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data = client.sfc_service_graphs()
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headers, columns = column_util.get_column_definitions(
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_attr_map, long_listing=parsed_args.long)
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return (headers,
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(utils.get_dict_properties(s, columns)
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for s in data))
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class ShowSfcServiceGraph(command.ShowOne):
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"""Show information of a given service graph."""
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def get_parser(self, prog_name):
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parser = super(ShowSfcServiceGraph, self).get_parser(prog_name)
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parser.add_argument(
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'service_graph',
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metavar="<service-graph>",
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help=_("ID or name of the service graph to display.")
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)
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return parser
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def take_action(self, parsed_args):
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client = self.app.client_manager.network
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sg_id = client.find_sfc_service_graph(parsed_args.service_graph,
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ignore_missing=False)['id']
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obj = client.get_sfc_service_graph(sg_id)
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display_columns, columns = utils.get_osc_show_columns_for_sdk_resource(
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obj, _attr_map_dict, ['location', 'tenant_id'])
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data = utils.get_dict_properties(obj, columns)
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return display_columns, data
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def _get_common_attrs(client_manager, parsed_args, is_create=True):
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attrs = {}
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if parsed_args.name is not None:
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attrs['name'] = str(parsed_args.name)
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if parsed_args.description is not None:
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attrs['description'] = str(parsed_args.description)
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if is_create:
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_get_attrs_for_create(client_manager, attrs, parsed_args)
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return attrs
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def _validate_destination_chains(comma_split, attrs, client, sc_):
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for e in comma_split:
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if e != "":
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dc_ = client.find_sfc_port_chain(e, ignore_missing=False)['id']
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attrs['port_chains'][sc_].append(dc_)
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if _check_cycle(attrs['port_chains'], sc_, dc_):
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raise(exceptions.CommandError(
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"Error: Service graph contains a cycle"))
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else:
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raise exceptions.CommandError(
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"Error: you must specify at least one "
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"destination chain for each source chain")
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return attrs
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def _check_cycle(graph, new_src, new_dest):
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for src in graph:
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if src == new_dest:
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if _visit(graph, src, new_dest, new_src):
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return True
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return False
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def _visit(graph, src, new_dest, new_src):
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if src in graph:
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found_cycle = False
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for dest in graph[src]:
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if new_src == dest or found_cycle:
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return True
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else:
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found_cycle = _visit(graph, dest, new_dest, new_src)
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return False
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def _get_attrs_for_create(client_manager, attrs, parsed_args):
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client = client_manager.network
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if parsed_args.branching_points:
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attrs['port_chains'] = {}
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src_chain = None
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for c in parsed_args.branching_points:
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if ':' not in c:
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raise exceptions.CommandError(
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"Error: You must specify at least one "
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"destination chain for each source chain.")
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colon_split = c.split(':')
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src_chain = colon_split.pop(0)
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sc_ = client.find_sfc_port_chain(src_chain,
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ignore_missing=False)['id']
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for i in colon_split:
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comma_split = i.split(',')
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unique = set(comma_split)
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if len(unique) != len(comma_split):
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raise exceptions.CommandError(
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"Error: Duplicate "
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"destination chains from "
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"source chain {}".format(src_chain))
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if sc_ in attrs['port_chains']:
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raise exceptions.CommandError(
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"Error: Source chain {} is in "
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"use already ".format(src_chain))
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attrs['port_chains'][sc_] = []
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_validate_destination_chains(
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comma_split, attrs, client, sc_)
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