Add python based force cleanup script
Change-Id: I5e9ce75d2773e83cbb94ae36b708d2b68b9008bc
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# Copyright 2016 Cisco Systems, Inc. All rights reserved.
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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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#
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###############################################################################
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# #
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# This is a helper script which will delete all resources created by #
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# KloudBuster. #
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# #
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# Normally, KloudBuster will clean up automatically when it is done. However, #
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# sometimes errors or timeouts happen during the resource creation stage, #
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# which will cause KloudBuster out of sync with the real environment. If that #
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# happens, a force cleanup may be needed. #
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# #
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# It is safe to use the script with the resource list generated by #
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# KloudBuster, usage: #
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# $ python force_cleanup.py --file kb_20150807_183001_svr.log #
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# #
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# Note: If running under single-tenant or tenant/user reusing mode, you have #
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# to cleanup the server resources first, then client resources. #
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# #
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# When there is no resource list provided, the script will simply grep the #
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# resource name with "KB" and delete them. If running on a production #
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# network, please double and triple check all resources names are *NOT* #
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# containing "KB", otherwise they will be deleted by the script. #
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# #
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###############################################################################
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# ======================================================
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# WARNING
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# ======================================================
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# IMPORTANT FOR RUNNING KLOUDBUSTER ON PRODUCTION CLOUDS
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#
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# DOUBLE CHECK THE NAMES OF ALL RESOURCES THAT DO NOT
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# BELONG TO KLOUDBUSTER ARE *NOT* CONTAINING "KB".
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# ======================================================
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from abc import ABCMeta
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from abc import abstractmethod
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import argparse
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import sys
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import time
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# openstack python clients
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import cinderclient
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import keystoneauth1
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from keystoneclient.v2_0 import client as keystoneclient
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import neutronclient
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from novaclient.client import Client as novaclient
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from novaclient.exceptions import NotFound
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from tabulate import tabulate
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# kloudbuster base code
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import credentials
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def prompt_to_run():
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print "Warning: You didn't specify a resource list file as the input. "\
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"The script will delete all above resources"
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answer = raw_input("Are you sure? (y/n) ")
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if answer.lower() != 'y':
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sys.exit(0)
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def fetch_resources(fetcher, options=None):
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if options:
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res_list = fetcher(search_opts=options)
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else:
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res_list = fetcher()
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resources = {}
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for res in res_list:
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# some objects provide direct access some
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# require access by key
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try:
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resname = res.name
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resid = res.id
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except AttributeError:
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resname = res['name']
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resid = res['id']
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if resname.startswith('KB'):
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resources[resid] = resname
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return resources
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class AbstractCleaner(object):
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__metaclass__ = ABCMeta
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def __init__(self, res_category, res_desc, resources, dryrun):
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self.dryrun = dryrun
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self.category = res_category
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self.resources = {}
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if not resources:
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print 'Discovering %s resources...' % (res_category)
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for rtype, fetch_args in res_desc.iteritems():
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if resources:
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if rtype in resources:
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self.resources[rtype] = resources[rtype]
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else:
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self.resources[rtype] = fetch_resources(*fetch_args)
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def report_deletion(self, rtype, name):
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if self.dryrun:
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print ' + ' + rtype + ' ' + name + ' should be deleted (but is not deleted: dry run)'
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else:
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print ' + ' + rtype + ' ' + name + ' successfully deleted'
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def report_not_found(self, rtype, name):
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print ' ? ' + rtype + ' ' + name + ' not found (already deleted?)'
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def report_error(self, rtype, name, reason):
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print ' - ' + rtype + ' ' + name + ' ERROR:' + reason
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def get_resource_list(self):
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result = []
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for rtype, rdict in self.resources.iteritems():
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for resid, resname in rdict.iteritems():
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result.append([rtype, resname, resid])
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return result
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@abstractmethod
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def clean(self):
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pass
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class StorageCleaner(AbstractCleaner):
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def __init__(self, creds, resources, dryrun):
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from cinderclient import client
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crd = creds.get_credentials()
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self.cinder = client.Client('2', crd['username'], crd['password'],
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crd['tenant_name'], crd['auth_url'])
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res_desc = {'volumes': [self.cinder.volumes.list, {"all_tenants": 1}]}
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super(StorageCleaner, self).__init__('Storage', res_desc, resources, dryrun)
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def clean(self):
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print '*** STORAGE cleanup'
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try:
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kb_volumes = []
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kb_detaching_volumes = []
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for id, name in self.resources['volumes'].iteritems():
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try:
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vol = self.cinder.volumes.get(id)
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if vol.attachments:
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# detach the volume
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if not self.dryrun:
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vol.detach()
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print ' . VOLUME ' + vol.name + ' detaching...'
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kb_detaching_volumes.append(vol)
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else:
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# no attachments
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kb_volumes.append(vol)
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except cinderclient.exceptions.NotFound:
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self.report_not_found('VOLUME', name)
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# check that the volumes are no longer attached
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if kb_detaching_volumes:
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print ' . Waiting for %d volumes to be fully detached...' % \
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(len(kb_detaching_volumes))
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retry_count = 2
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while True:
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retry_count -= 1
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for vol in list(kb_detaching_volumes):
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if not self.dryrun:
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latest_vol = self.cinder.volumes.get(kb_detaching_volumes[0].id)
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if self.dryrun or not latest_vol.attachments:
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if not self.dryrun:
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print ' + VOLUME ' + vol.name + ' detach complete'
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kb_detaching_volumes.remove(vol)
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kb_volumes.append(vol)
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if kb_detaching_volumes and not self.dryrun:
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if retry_count:
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print ' . VOLUME %d left to be detached, retries left=%d...' % \
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(len(kb_detaching_volumes), retry_count)
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time.sleep(1)
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else:
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print ' - VOLUME detach timeout, %d volumes left:' % \
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(len(kb_detaching_volumes))
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for vol in kb_detaching_volumes:
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print ' ', vol.name, vol.status, vol.id, vol.attachments
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break
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else:
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break
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# finally delete the volumes
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for vol in kb_volumes:
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if not self.dryrun:
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vol.force_delete()
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self.report_deletion('VOLUME', vol.name)
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except KeyError:
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pass
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class ComputeCleaner(AbstractCleaner):
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def __init__(self, creds, resources, dryrun):
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creden_nova = creds.get_nova_credentials_v2()
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self.nova_client = novaclient(**creden_nova)
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res_desc = {
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'instances': [self.nova_client.servers.list, {"all_tenants": 1}],
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'flavors': [self.nova_client.flavors.list],
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'keypairs': [self.nova_client.keypairs.list],
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'sec_groups': [self.nova_client.security_groups.list]
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}
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super(ComputeCleaner, self).__init__('Compute', res_desc, resources, dryrun)
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def clean(self):
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print '*** COMPUTE cleanup'
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try:
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for id, name in self.resources['instances'].iteritems():
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try:
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if self.dryrun:
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self.nova_client.servers.get(id)
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else:
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self.nova_client.servers.delete(id)
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self.report_deletion('INSTANCE', name)
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except NotFound:
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self.report_not_found('INSTANCE', name)
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except KeyError:
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pass
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try:
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for id, name in self.resources['flavors'].iteritems():
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try:
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flavor = self.nova_client.flavors.find(name=name)
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if not self.dryrun:
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flavor.delete()
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self.report_deletion('FLAVOR', name)
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except NotFound:
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self.report_not_found('FLAVOR', name)
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except KeyError:
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pass
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try:
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for id, name in self.resources['keypairs'].iteritems():
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try:
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if self.dryrun:
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self.nova_client.keypairs.get(name)
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else:
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self.nova_client.keypairs.delete(name)
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self.report_deletion('KEY PAIR', name)
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except NotFound:
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self.report_not_found('KEY PAIR', name)
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except KeyError:
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pass
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try:
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for id, name in self.resources['sec_groups'].iteritems():
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try:
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secgroup = self.nova_client.security_groups.get(id)
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if not self.dryrun:
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self.nova_client.security_groups.delete(secgroup)
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self.report_deletion('SECURITY GROUP', name)
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except NotFound:
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self.report_not_found('SECURITY GROUP', name)
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except KeyError:
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pass
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class NetworkCleaner(AbstractCleaner):
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def __init__(self, creds, resources, dryrun):
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from neutronclient.v2_0 import client as nclient
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creden = creds.get_credentials()
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self.neutron = nclient.Client(endpoint_type='publicURL', **creden)
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# because the response has an extra level of indirection
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# we need to extract it to present the list of network or router objects
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def networks_fetcher():
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return self.neutron.list_networks()['networks']
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def routers_fetcher():
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return self.neutron.list_routers()['routers']
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res_desc = {
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'networks': [networks_fetcher],
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'routers': [routers_fetcher]
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}
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super(NetworkCleaner, self).__init__('Network', res_desc, resources, dryrun)
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def remove_router_interface(self, router_id, port):
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"""
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Remove the network interface from router
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"""
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body = {
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# 'port_id': port['id']
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'subnet_id': port['fixed_ips'][0]['subnet_id']
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}
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try:
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self.neutron.remove_interface_router(router_id, body)
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except neutronclient.common.exceptions.NotFound:
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self.report_not_found('Router Interface', port['fixed_ips'][0]['ip_address'])
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def clean(self):
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print '*** NETWORK cleanup'
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try:
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for id, name in self.resources['floating_ips'].iteritems():
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try:
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if self.dryrun:
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self.neutron.show_floatingip(id)
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else:
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self.neutron.delete_floatingip(id)
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self.report_deletion('FLOATING IP', name)
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except neutronclient.common.exceptions.NotFound:
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self.report_not_found('FLOATING IP', name)
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except KeyError:
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pass
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try:
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for id, name in self.resources['routers'].iteritems():
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try:
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if self.dryrun:
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self.neutron.show_router(id)
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else:
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self.neutron.remove_gateway_router(id)
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# need to delete each interface before deleting the router
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port_list = self.neutron.list_ports(id)['ports']
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for port in port_list:
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self.remove_router_interface(id, port)
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self.neutron.delete_router(id)
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self.report_deletion('ROUTER', name)
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except neutronclient.common.exceptions.NotFound:
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self.report_not_found('ROUTER', name)
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except neutronclient.common.exceptions.Conflict as exc:
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self.report_error('ROUTER', name, str(exc))
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except KeyError:
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pass
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try:
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for id, name in self.resources['networks'].iteritems():
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try:
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if self.dryrun:
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self.neutron.show_network(id)
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else:
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self.neutron.delete_network(id)
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self.report_deletion('NETWORK', name)
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except neutronclient.common.exceptions.NetworkNotFoundClient:
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self.report_not_found('NETWORK', name)
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except neutronclient.common.exceptions.NetworkInUseClient as exc:
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self.report_error('NETWORK', name, str(exc))
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except KeyError:
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pass
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class KeystoneCleaner(AbstractCleaner):
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def __init__(self, creds, resources, dryrun):
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crd = creds.get_credentials()
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self.keystone = keystoneclient.Client(endpoint_type='publicURL', **crd)
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res_desc = {
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'users': [self.keystone.users.list],
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'tenants': [self.keystone.tenants.list]
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}
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super(KeystoneCleaner, self).__init__('Keystone', res_desc, resources, dryrun)
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def clean(self):
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print '*** KEYSTONE cleanup'
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try:
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for id, name in self.resources['users'].iteritems():
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try:
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if self.dryrun:
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self.keystone.users.get(id)
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else:
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self.keystone.users.delete(id)
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self.report_deletion('USER', name)
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except keystoneauth1.exceptions.http.NotFound:
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self.report_not_found('USER', name)
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except KeyError:
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pass
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try:
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for id, name in self.resources['tenants'].iteritems():
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try:
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if self.dryrun:
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self.keystone.tenants.get(id)
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else:
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self.keystone.tenants.delete(id)
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self.report_deletion('TENANT', name)
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except keystoneauth1.exceptions.http.NotFound:
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self.report_not_found('TENANT', name)
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except KeyError:
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pass
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class KbCleaners(object):
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def __init__(self, cred, resources, dryrun):
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self.cleaners = []
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for cleaner_type in [StorageCleaner, ComputeCleaner, NetworkCleaner, KeystoneCleaner]:
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self.cleaners.append(cleaner_type(cred, resources, dryrun))
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def show_resources(self):
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table = [["Type", "Name", "UUID"]]
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for cleaner in self.cleaners:
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table.extend(cleaner.get_resource_list())
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count = len(table) - 1
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print
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if count:
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print 'SELECTED RESOURCES:'
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print tabulate(table, headers="firstrow", tablefmt="psql")
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else:
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print 'There are no resources to delete'
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print
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return count
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def clean(self):
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for cleaner in self.cleaners:
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cleaner.clean()
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# A dictionary of resources to cleanup
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# First level keys are:
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# flavors, keypairs, users, routers, floating_ips, instances, volumes, sec_groups, tenants, networks
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# second level keys are the resource IDs
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# values are the resource name (e.g. 'KBc-T0-U-R0-N0-I5')
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def get_resources_from_cleanup_log(logfile):
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'''Load triplets separated by '|' into a 2 level dictionary
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'''
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resources = {}
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with open(logfile) as ff:
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content = ff.readlines()
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for line in content:
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tokens = line.strip().split('|')
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restype = tokens[0]
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resname = tokens[1]
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resid = tokens[2]
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if not resid:
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# normally only the keypairs have no ID
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if restype != "keypairs":
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print 'Error: resource type %s has no ID - ignored!!!' % (restype)
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else:
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resid = '0'
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if restype not in resources:
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resources[restype] = {}
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tres = resources[restype]
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tres[resid] = resname
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return resources
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def main():
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parser = argparse.ArgumentParser(description='KloudBuster Force Cleanup')
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parser.add_argument('-f', '--file', dest='file',
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action='store', required=False,
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help='use cleanup log file',
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metavar='<file>')
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parser.add_argument('-d', '--dryrun', dest='dryrun',
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action='store_true',
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default=False,
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help='check resources only - do not delete anything')
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parser.add_argument('-r', '--rc', dest='rc',
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action='store', required=False,
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help='openrc file',
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metavar='<file>')
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opts = parser.parse_args()
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cred = credentials.Credentials(openrc_file=opts.rc)
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if opts.file:
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resources = get_resources_from_cleanup_log(opts.file)
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else:
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# None means try to find the resources from openstack directly by name
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resources = None
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cleaners = KbCleaners(cred, resources, opts.dryrun)
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if opts.dryrun:
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print
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print('!!! DRY RUN - RESOURCES WILL BE CHECKED BUT WILL NOT BE DELETED !!!')
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print
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# Display resources to be deleted
|
||||
count = cleaners.show_resources()
|
||||
if not count:
|
||||
sys.exit(0)
|
||||
|
||||
if not opts.file and not opts.dryrun:
|
||||
prompt_to_run()
|
||||
|
||||
cleaners.clean()
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
Loading…
Reference in New Issue