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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
import abc
import logging
import openstack.exceptions
from osc_lib.command import command
from osc_lib import exceptions
import six
from openstackclient.i18n import _
LOG = logging.getLogger(__name__)
@six.add_metaclass(abc.ABCMeta)
class NetworkAndComputeCommand(command.Command):
"""Network and Compute Command
Command class for commands that support implementation via
the network or compute endpoint. Such commands have different
implementations for take_action() and may even have different
arguments.
"""
def take_action(self, parsed_args):
if self.app.client_manager.is_network_endpoint_enabled():
return self.take_action_network(self.app.client_manager.network,
parsed_args)
else:
return self.take_action_compute(self.app.client_manager.compute,
parsed_args)
def get_parser(self, prog_name):
LOG.debug('get_parser(%s)', prog_name)
parser = super(NetworkAndComputeCommand, self).get_parser(prog_name)
parser = self.update_parser_common(parser)
LOG.debug('common parser: %s', parser)
if (
self.app is None or
self.app.client_manager.is_network_endpoint_enabled()
):
return self.update_parser_network(parser)
else:
return self.update_parser_compute(parser)
def update_parser_common(self, parser):
"""Default is no updates to parser."""
return parser
def update_parser_network(self, parser):
"""Default is no updates to parser."""
return parser
def update_parser_compute(self, parser):
"""Default is no updates to parser."""
return parser
@abc.abstractmethod
def take_action_network(self, client, parsed_args):
"""Override to do something useful."""
pass
@abc.abstractmethod
def take_action_compute(self, client, parsed_args):
"""Override to do something useful."""
pass
@six.add_metaclass(abc.ABCMeta)
class NetworkAndComputeDelete(NetworkAndComputeCommand):
"""Network and Compute Delete
Delete class for commands that support implementation via
the network or compute endpoint. Such commands have different
implementations for take_action() and may even have different
arguments. This class supports bulk deletion, and error handling
following the rules in doc/source/command-errors.rst.
"""
def take_action(self, parsed_args):
ret = 0
resources = getattr(parsed_args, self.resource, [])
for r in resources:
self.r = r
try:
if self.app.client_manager.is_network_endpoint_enabled():
self.take_action_network(self.app.client_manager.network,
parsed_args)
else:
self.take_action_compute(self.app.client_manager.compute,
parsed_args)
except Exception as e:
msg = _("Failed to delete %(resource)s with name or ID "
"'%(name_or_id)s': %(e)s") % {
"resource": self.resource,
"name_or_id": r,
"e": e,
}
LOG.error(msg)
ret += 1
if ret:
total = len(resources)
msg = _("%(num)s of %(total)s %(resource)ss failed to delete.") % {
"num": ret,
"total": total,
"resource": self.resource,
}
raise exceptions.CommandError(msg)
@six.add_metaclass(abc.ABCMeta)
class NetworkAndComputeLister(command.Lister):
"""Network and Compute Lister
Lister class for commands that support implementation via
the network or compute endpoint. Such commands have different
implementations for take_action() and may even have different
arguments.
"""
def take_action(self, parsed_args):
if self.app.client_manager.is_network_endpoint_enabled():
return self.take_action_network(self.app.client_manager.network,
parsed_args)
else:
return self.take_action_compute(self.app.client_manager.compute,
parsed_args)
def get_parser(self, prog_name):
LOG.debug('get_parser(%s)', prog_name)
parser = super(NetworkAndComputeLister, self).get_parser(prog_name)
parser = self.update_parser_common(parser)
LOG.debug('common parser: %s', parser)
if self.app.client_manager.is_network_endpoint_enabled():
return self.update_parser_network(parser)
else:
return self.update_parser_compute(parser)
def update_parser_common(self, parser):
"""Default is no updates to parser."""
return parser
def update_parser_network(self, parser):
"""Default is no updates to parser."""
return parser
def update_parser_compute(self, parser):
"""Default is no updates to parser."""
return parser
@abc.abstractmethod
def take_action_network(self, client, parsed_args):
"""Override to do something useful."""
pass
@abc.abstractmethod
def take_action_compute(self, client, parsed_args):
"""Override to do something useful."""
pass
@six.add_metaclass(abc.ABCMeta)
class NetworkAndComputeShowOne(command.ShowOne):
"""Network and Compute ShowOne
ShowOne class for commands that support implementation via
the network or compute endpoint. Such commands have different
implementations for take_action() and may even have different
arguments.
"""
def take_action(self, parsed_args):
try:
if self.app.client_manager.is_network_endpoint_enabled():
return self.take_action_network(
self.app.client_manager.network, parsed_args)
else:
return self.take_action_compute(
self.app.client_manager.compute, parsed_args)
except openstack.exceptions.HttpException as exc:
msg = _("Error while executing command: %s") % exc.message
if exc.details:
msg += ", " + six.text_type(exc.details)
raise exceptions.CommandError(msg)
def get_parser(self, prog_name):
LOG.debug('get_parser(%s)', prog_name)
parser = super(NetworkAndComputeShowOne, self).get_parser(prog_name)
parser = self.update_parser_common(parser)
LOG.debug('common parser: %s', parser)
if self.app.client_manager.is_network_endpoint_enabled():
return self.update_parser_network(parser)
else:
return self.update_parser_compute(parser)
def update_parser_common(self, parser):
"""Default is no updates to parser."""
return parser
def update_parser_network(self, parser):
"""Default is no updates to parser."""
return parser
def update_parser_compute(self, parser):
"""Default is no updates to parser."""
return parser
@abc.abstractmethod
def take_action_network(self, client, parsed_args):
"""Override to do something useful."""
pass
@abc.abstractmethod
def take_action_compute(self, client, parsed_args):
"""Override to do something useful."""
pass
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