root / snf-cyclades-app / synnefo / logic / management / commands / backend-remove.py @ 89b2b908
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1 | 3f52dd82 | Christos Stavrakakis | # Copyright 2011-2012 GRNET S.A. All rights reserved.
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2 | 3f52dd82 | Christos Stavrakakis | #
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3 | 3f52dd82 | Christos Stavrakakis | # Redistribution and use in source and binary forms, with or without
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4 | 3f52dd82 | Christos Stavrakakis | # modification, are permitted provided that the following conditions
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5 | 3f52dd82 | Christos Stavrakakis | # are met:
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6 | 3f52dd82 | Christos Stavrakakis | #
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7 | 3f52dd82 | Christos Stavrakakis | # 1. Redistributions of source code must retain the above copyright
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8 | 3f52dd82 | Christos Stavrakakis | # notice, this list of conditions and the following disclaimer.
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9 | 3f52dd82 | Christos Stavrakakis | #
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10 | 3f52dd82 | Christos Stavrakakis | # 2. Redistributions in binary form must reproduce the above copyright
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11 | 3f52dd82 | Christos Stavrakakis | # notice, this list of conditions and the following disclaimer in the
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12 | 3f52dd82 | Christos Stavrakakis | # documentation and/or other materials provided with the distribution.
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13 | 3f52dd82 | Christos Stavrakakis | #
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14 | 3f52dd82 | Christos Stavrakakis | # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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15 | 3f52dd82 | Christos Stavrakakis | # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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16 | 3f52dd82 | Christos Stavrakakis | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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17 | 3f52dd82 | Christos Stavrakakis | # ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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18 | 3f52dd82 | Christos Stavrakakis | # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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19 | 3f52dd82 | Christos Stavrakakis | # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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20 | 3f52dd82 | Christos Stavrakakis | # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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21 | 3f52dd82 | Christos Stavrakakis | # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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22 | 3f52dd82 | Christos Stavrakakis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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23 | 3f52dd82 | Christos Stavrakakis | # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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24 | 3f52dd82 | Christos Stavrakakis | # SUCH DAMAGE.
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25 | 3f52dd82 | Christos Stavrakakis | #
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26 | 3f52dd82 | Christos Stavrakakis | # The views and conclusions contained in the software and documentation are
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27 | 3f52dd82 | Christos Stavrakakis | # those of the authors and should not be interpreted as representing official
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28 | 3f52dd82 | Christos Stavrakakis | # policies, either expressed or implied, of GRNET S.A.
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29 | 3f52dd82 | Christos Stavrakakis | #
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30 | 3f52dd82 | Christos Stavrakakis | |
31 | 3f52dd82 | Christos Stavrakakis | from django.core.management.base import BaseCommand, CommandError |
32 | b84ed662 | Christos Stavrakakis | from synnefo.management.common import get_backend |
33 | b84ed662 | Christos Stavrakakis | from synnefo.db.models import VirtualMachine, BackendNetwork |
34 | 3f52dd82 | Christos Stavrakakis | |
35 | 3f52dd82 | Christos Stavrakakis | |
36 | 3f52dd82 | Christos Stavrakakis | class Command(BaseCommand): |
37 | 3f52dd82 | Christos Stavrakakis | can_import_settings = True
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38 | 3f52dd82 | Christos Stavrakakis | |
39 | 3f52dd82 | Christos Stavrakakis | help = "Remove a backend from the Database. Backend should be set\n" \
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40 | 3f52dd82 | Christos Stavrakakis | "to drained before trying to remove it, in order to avoid the\n" \
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41 | 3f52dd82 | Christos Stavrakakis | "allocation of a new instances in this Backend.\n\n" \
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42 | 3f52dd82 | Christos Stavrakakis | "Removal of a backend will fail if the backend hosts any\n" \
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43 | 3f52dd82 | Christos Stavrakakis | "non-deleted instances."
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44 | 3f52dd82 | Christos Stavrakakis | |
45 | 3f52dd82 | Christos Stavrakakis | output_transaction = True # The management command runs inside |
46 | 3f52dd82 | Christos Stavrakakis | # an SQL transaction
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47 | 3f52dd82 | Christos Stavrakakis | |
48 | 3f52dd82 | Christos Stavrakakis | def handle(self, *args, **options): |
49 | cc92b70f | Christos Stavrakakis | write = self.stdout.write
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50 | 3f52dd82 | Christos Stavrakakis | if len(args) < 1: |
51 | 3f52dd82 | Christos Stavrakakis | raise CommandError("Please provide a backend ID") |
52 | 3f52dd82 | Christos Stavrakakis | |
53 | b84ed662 | Christos Stavrakakis | backend = get_backend(args[0])
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54 | 3f52dd82 | Christos Stavrakakis | |
55 | cc92b70f | Christos Stavrakakis | write('Trying to remove backend: %s\n' % backend.clustername)
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56 | 3f52dd82 | Christos Stavrakakis | |
57 | 3f52dd82 | Christos Stavrakakis | vms_in_backend = VirtualMachine.objects.filter(backend=backend, |
58 | 3f52dd82 | Christos Stavrakakis | deleted=False)
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59 | 3f52dd82 | Christos Stavrakakis | |
60 | 3f52dd82 | Christos Stavrakakis | if vms_in_backend:
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61 | 3f52dd82 | Christos Stavrakakis | raise CommandError('Backend hosts non-deleted vms. Can not delete') |
62 | 3f52dd82 | Christos Stavrakakis | |
63 | cc92b70f | Christos Stavrakakis | networks = BackendNetwork.objects.filter(backend=backend, |
64 | cc92b70f | Christos Stavrakakis | deleted=False)
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65 | 3f52dd82 | Christos Stavrakakis | networks = [net.network.backend_id for net in networks] |
66 | 3f52dd82 | Christos Stavrakakis | |
67 | 3f52dd82 | Christos Stavrakakis | backend.delete() |
68 | 3f52dd82 | Christos Stavrakakis | |
69 | cc92b70f | Christos Stavrakakis | write('Successfully removed backend.\n')
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70 | 3f52dd82 | Christos Stavrakakis | |
71 | 3f52dd82 | Christos Stavrakakis | if networks:
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72 | cc92b70f | Christos Stavrakakis | write('Left the following orphans networks in Ganeti:\n')
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73 | cc92b70f | Christos Stavrakakis | write(' ' + '\n * '.join(networks) + '\n') |
74 | cc92b70f | Christos Stavrakakis | write('Manually remove them.\n') |