175 lines
7.3 KiB
Python
175 lines
7.3 KiB
Python
# -*- coding: utf-8 -*- #
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# Copyright 2016 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 updating health checks."""
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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 health_checks_utils
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from googlecloudsdk.calliope import base
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from googlecloudsdk.command_lib.compute.health_checks import exceptions
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from googlecloudsdk.command_lib.compute.health_checks import flags
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from googlecloudsdk.core import exceptions as core_exceptions
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from googlecloudsdk.core import log
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@base.Hidden
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@base.ReleaseTracks(base.ReleaseTrack.ALPHA)
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class Update(base.UpdateCommand):
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"""Update a UDP health check.
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*{command}* is used to update an existing UDP health check. Only
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arguments passed in will be updated on the health check. Other
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attributes will remain unaffected.
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"""
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HEALTH_CHECK_ARG = None
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@classmethod
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def Args(cls, parser):
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cls.HEALTH_CHECK_ARG = flags.HealthCheckArgument('UDP')
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cls.HEALTH_CHECK_ARG.AddArgument(parser, operation_type='update')
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health_checks_utils.AddUdpRelatedArgs(
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parser, request_and_response_required=False)
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health_checks_utils.AddProtocolAgnosticUpdateArgs(parser, 'UDP')
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def _GetGetRequest(self, client, health_check_ref):
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"""Returns a request for fetching the existing health check."""
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return (client.apitools_client.healthChecks, 'Get',
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client.messages.ComputeHealthChecksGetRequest(
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healthCheck=health_check_ref.Name(),
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project=health_check_ref.project))
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def _GetSetRequest(self, client, health_check_ref, replacement):
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"""Returns a request for updating the health check."""
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return (client.apitools_client.healthChecks, 'Update',
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client.messages.ComputeHealthChecksUpdateRequest(
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healthCheck=health_check_ref.Name(),
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healthCheckResource=replacement,
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project=health_check_ref.project))
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def _GetRegionalGetRequest(self, client, health_check_ref):
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"""Returns a request for fetching the existing health check."""
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return (client.apitools_client.regionHealthChecks, 'Get',
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client.messages.ComputeRegionHealthChecksGetRequest(
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healthCheck=health_check_ref.Name(),
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project=health_check_ref.project,
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region=health_check_ref.region))
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def _GetRegionalSetRequest(self, client, health_check_ref, replacement):
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"""Returns a request for updating the health check."""
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return (client.apitools_client.regionHealthChecks, 'Update',
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client.messages.ComputeRegionHealthChecksUpdateRequest(
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healthCheck=health_check_ref.Name(),
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healthCheckResource=replacement,
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project=health_check_ref.project,
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region=health_check_ref.region))
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def Modify(self, client, args, existing_check):
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"""Returns a modified HealthCheck message."""
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# We do not support using 'update udp' with a health check of a
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# different protocol.
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if (existing_check.type !=
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client.messages.HealthCheck.TypeValueValuesEnum.UDP):
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raise core_exceptions.Error(
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'update udp subcommand applied to health check with protocol ' +
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existing_check.type.name)
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# Description and PortName are the only attributes that can be cleared by
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# passing in an empty string (but we don't want to set it to empty string).
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if args.description:
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description = args.description
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elif args.description is None:
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description = existing_check.description
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else:
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description = None
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if args.port_name:
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port_name = args.port_name
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elif args.port_name is None:
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port_name = existing_check.udpHealthCheck.portName
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else:
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port_name = None
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new_health_check = client.messages.HealthCheck(
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name=existing_check.name,
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description=description,
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type=client.messages.HealthCheck.TypeValueValuesEnum.UDP,
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udpHealthCheck=client.messages.UDPHealthCheck(
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request=args.request or existing_check.udpHealthCheck.request,
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response=args.response or existing_check.udpHealthCheck.response,
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port=args.port or existing_check.udpHealthCheck.port,
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portName=port_name),
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checkIntervalSec=(args.check_interval or
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existing_check.checkIntervalSec),
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timeoutSec=args.timeout or existing_check.timeoutSec,
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healthyThreshold=(args.healthy_threshold or
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existing_check.healthyThreshold),
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unhealthyThreshold=(args.unhealthy_threshold or
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existing_check.unhealthyThreshold),
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)
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return new_health_check
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def Run(self, args):
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"""Issues requests necessary to update UDP Health Checks."""
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holder = base_classes.ComputeApiHolder(self.ReleaseTrack())
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client = holder.client
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health_checks_utils.CheckProtocolAgnosticArgs(args)
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args_unset = not (args.port or args.check_interval or args.timeout or
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args.healthy_threshold or args.unhealthy_threshold or
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args.request or args.response)
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if args.description is None and args.port_name is None and args_unset:
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raise exceptions.ArgumentError('At least one property must be modified.')
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# Check that request and response are not empty. It is acceptable for it to
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# be None.
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if args.request is not None and not args.request:
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raise exceptions.ArgumentError(
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'"request" field for UDP can not be empty.')
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if args.response is not None and not args.response:
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raise exceptions.ArgumentError(
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'"response" field for UDP can not be empty.')
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health_check_ref = self.HEALTH_CHECK_ARG.ResolveAsResource(
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args, holder.resources)
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if health_checks_utils.IsRegionalHealthCheckRef(health_check_ref):
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get_request = self._GetRegionalGetRequest(client, health_check_ref)
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else:
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get_request = self._GetGetRequest(client, health_check_ref)
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objects = client.MakeRequests([get_request])
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new_object = self.Modify(client, args, objects[0])
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# If existing object is equal to the proposed object or if
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# Modify() returns None, then there is no work to be done, so we
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# print the resource and return.
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if objects[0] == new_object:
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log.status.Print('No change requested; skipping update for [{0}].'.format(
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objects[0].name))
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return objects
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if health_checks_utils.IsRegionalHealthCheckRef(health_check_ref):
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set_request = self._GetRegionalSetRequest(client, health_check_ref,
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new_object)
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else:
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set_request = self._GetSetRequest(client, health_check_ref, new_object)
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return client.MakeRequests([set_request])
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