275 lines
10 KiB
Python
275 lines
10 KiB
Python
# -*- coding: utf-8 -*- #
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# Copyright 2014 Google LLC. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Command for deleting instances."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import unicode_literals
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from googlecloudsdk.api_lib.compute import base_classes
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from googlecloudsdk.api_lib.compute import utils
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from googlecloudsdk.calliope import base
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from googlecloudsdk.command_lib.compute import completers
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from googlecloudsdk.command_lib.compute import exceptions as compute_exceptions
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from googlecloudsdk.command_lib.compute.instances import flags
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from googlecloudsdk.core import resources as cloud_resources
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from googlecloudsdk.core.console import console_io
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from six.moves import zip
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_INSTANCE_DELETE_PROMPT = 'The following instances will be deleted.'
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_INSTANCE_DELETE_PROMPT_DISK_ADDENDUM = """\
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Any attached disks configured to be auto-deleted will be deleted unless they \
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are attached to any other instances or the `--keep-disks` flag is given and \
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specifies them for keeping. \
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Deleting a disk is irreversible and any data on the disk will be lost."""
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# During delete, graceful shutdown can take up to 60 minutes to complete, we
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# are setting timeout to `70` minutes to give some space for delete operation
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# to complete gracefully
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_TIMEOUT_IN_SEC = 60 * 70
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AUTO_DELETE_OVERRIDE_CHOICES = {
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'boot': 'The first partition is reserved for the root filesystem.',
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'data': 'A non-boot disk.',
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'all': 'All disk types.',
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}
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DETAILED_HELP = {
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'EXAMPLES': """
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To delete an instance called 'instance-1' in the zone 'us-central-2-a', run:
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$ {command} instance-1 --zone=us-central2-a
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"""
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}
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@base.UniverseCompatible
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class Delete(base.DeleteCommand):
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"""Delete Compute Engine virtual machine instances.
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*{command}* deletes one or more Compute Engine virtual machine
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instances.
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"""
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@classmethod
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def Args(cls, parser):
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auto_delete_override = parser.add_mutually_exclusive_group()
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auto_delete_override.add_argument(
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'--delete-disks',
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choices=AUTO_DELETE_OVERRIDE_CHOICES,
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metavar='DISK_TYPE',
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help="""\
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The types of disks to delete with instance deletion regardless
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of the disks' auto-delete configuration. When this flag is
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provided, the auto-delete bits on the attached disks are
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modified accordingly before the instance deletion requests are
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issued. For more information on disk auto-deletion, see
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[Set the auto-delete state of a zonal persistent disk](https://cloud.google.com/compute/docs/disks/modify-persistent-disk#updateautodelete)
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""")
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auto_delete_override.add_argument(
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'--keep-disks',
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choices=AUTO_DELETE_OVERRIDE_CHOICES,
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metavar='DISK_TYPE',
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help="""\
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The types of disks to not delete with instance deletion regardless
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of the disks' auto-delete configuration. When this flag is
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provided, the auto-delete bits on the attached disks are
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modified accordingly before the instance deletion requests are
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issued. For more information on disk auto-deletion, see
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[Set the auto-delete state of a zonal persistent disk](https://cloud.google.com/compute/docs/disks/modify-persistent-disk#updateautodelete)
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""")
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flags.INSTANCES_ARG.AddArgument(parser, operation_type='delete')
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if (
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cls.ReleaseTrack() == base.ReleaseTrack.ALPHA
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or cls.ReleaseTrack() == base.ReleaseTrack.BETA
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):
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parser.add_argument(
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'--no-graceful-shutdown',
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action='store_true',
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default=None,
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help=(
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'Deletes the instance immediately without gracefully shutting it'
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' down. If a graceful shutdown is in progress, then the instance'
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' is forcefully stopped and deleted.'
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),
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)
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parser.display_info.AddCacheUpdater(completers.InstancesCompleter)
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def GetInstances(self, refs, client):
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"""Fetches instance objects corresponding to the given references."""
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instance_get_requests = []
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for ref in refs:
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request_protobuf = client.messages.ComputeInstancesGetRequest(
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**ref.AsDict())
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instance_get_requests.append((client.apitools_client.instances, 'Get',
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request_protobuf))
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errors = []
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instances = client.MakeRequests(
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requests=instance_get_requests,
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errors_to_collect=errors)
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if errors:
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utils.RaiseToolException(
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errors,
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error_message='Failed to fetch some instances:')
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return instances
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def PromptIfDisksWithoutAutoDeleteWillBeDeleted(self, disks_to_warn_for):
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"""Prompts if disks with False autoDelete will be deleted.
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Args:
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disks_to_warn_for: list of tuple of (references to disk resources, disk
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type). disk_type(str)-> either 'zonalDisk' or 'regionalDisk'.
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"""
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if not disks_to_warn_for:
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return
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prompt_list = []
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for ref, disk_type in disks_to_warn_for:
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prompt_list.append(
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'[{0}] in [{1}]'.format(
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ref.Name(), ref.zone if disk_type == 'zonalDisk' else ref.region
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)
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)
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prompt_message = utils.ConstructList(
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'The following disks are not configured to be automatically deleted '
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'with instance deletion, but they will be deleted as a result of '
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'this operation if they are not attached to any other instances:',
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prompt_list,
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)
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if not console_io.PromptContinue(message=prompt_message):
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raise compute_exceptions.AbortedError('Deletion aborted by user.')
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def AutoDeleteMustBeChanged(self, args, disk_resource):
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"""Returns True if the autoDelete property of the disk must be changed."""
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if args.keep_disks == 'boot':
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return disk_resource.autoDelete and disk_resource.boot
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elif args.keep_disks == 'data':
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return disk_resource.autoDelete and not disk_resource.boot
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elif args.keep_disks == 'all':
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return disk_resource.autoDelete
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elif args.delete_disks == 'data':
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return not disk_resource.autoDelete and not disk_resource.boot
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elif args.delete_disks == 'all':
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return not disk_resource.autoDelete
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elif args.delete_disks == 'boot':
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return not disk_resource.autoDelete and disk_resource.boot
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return False
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def Run(self, args):
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holder = base_classes.ComputeApiHolder(self.ReleaseTrack())
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client = holder.client
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refs = flags.INSTANCES_ARG.ResolveAsResource(
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args, holder.resources,
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scope_lister=flags.GetInstanceZoneScopeLister(client))
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msg = _INSTANCE_DELETE_PROMPT
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if args.keep_disks != 'all':
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msg += ' ' + _INSTANCE_DELETE_PROMPT_DISK_ADDENDUM
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utils.PromptForDeletion(refs, scope_name='zone', prompt_title=msg)
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if args.delete_disks or args.keep_disks:
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instance_resources = self.GetInstances(refs, client)
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disks_to_warn_for = []
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set_auto_delete_requests = []
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for ref, resource in zip(refs, instance_resources):
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for disk in resource.disks:
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# Determines whether the current disk needs to have its
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# autoDelete parameter changed.
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if not self.AutoDeleteMustBeChanged(args, disk):
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continue
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# At this point, we know that the autoDelete property of the
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# disk must be changed. Since autoDelete is a boolean, we
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# just negate it!
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# Yay, computer science! :) :) :)
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new_auto_delete = not disk.autoDelete
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if new_auto_delete:
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# Parse the disk as zonal and if it fails, parse it as regional.
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try:
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disks_to_warn_for.append((
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holder.resources.Parse(
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disk.source,
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collection='compute.disks',
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params={'zone': ref.zone},
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),
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'zonalDisk',
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))
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except cloud_resources.WrongResourceCollectionException:
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disks_to_warn_for.append((
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holder.resources.Parse(
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disk.source,
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collection='compute.regionDisks',
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params={'zone': ref.zone},
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),
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'regionalDisk',
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))
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set_auto_delete_requests.append((
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client.apitools_client.instances,
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'SetDiskAutoDelete',
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client.messages.ComputeInstancesSetDiskAutoDeleteRequest(
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autoDelete=new_auto_delete,
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deviceName=disk.deviceName,
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instance=ref.Name(),
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project=ref.project,
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zone=ref.zone)))
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if set_auto_delete_requests:
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self.PromptIfDisksWithoutAutoDeleteWillBeDeleted(disks_to_warn_for)
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errors = []
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client.MakeRequests(
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requests=set_auto_delete_requests,
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errors_to_collect=errors,
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timeout=_TIMEOUT_IN_SEC,
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)
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if errors:
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utils.RaiseToolException(
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errors,
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error_message=('Some requests to change disk auto-delete '
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'behavior failed:'))
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delete_requests = []
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for ref in refs:
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if (
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self.ReleaseTrack() == base.ReleaseTrack.ALPHA
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or self.ReleaseTrack() == base.ReleaseTrack.BETA
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):
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request_protobuf = client.messages.ComputeInstancesDeleteRequest(
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**ref.AsDict(), noGracefulShutdown=args.no_graceful_shutdown
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)
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else:
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request_protobuf = client.messages.ComputeInstancesDeleteRequest(
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**ref.AsDict()
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)
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delete_requests.append((client.apitools_client.instances, 'Delete',
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request_protobuf))
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return client.MakeRequests(delete_requests, timeout=_TIMEOUT_IN_SEC)
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Delete.detailed_help = DETAILED_HELP
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