root / logic / backend.py @ 746c6bf4
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1 | adee02b8 | Giorgos Verigakis | # Copyright 2011 GRNET S.A. All rights reserved.
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2 | adee02b8 | Giorgos Verigakis | #
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3 | adee02b8 | Giorgos Verigakis | # Redistribution and use in source and binary forms, with or
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4 | adee02b8 | Giorgos Verigakis | # without modification, are permitted provided that the following
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5 | adee02b8 | Giorgos Verigakis | # conditions are met:
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6 | adee02b8 | Giorgos Verigakis | #
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7 | adee02b8 | Giorgos Verigakis | # 1. Redistributions of source code must retain the above
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8 | adee02b8 | Giorgos Verigakis | # copyright notice, this list of conditions and the following
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9 | adee02b8 | Giorgos Verigakis | # disclaimer.
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10 | adee02b8 | Giorgos Verigakis | #
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11 | adee02b8 | Giorgos Verigakis | # 2. Redistributions in binary form must reproduce the above
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12 | adee02b8 | Giorgos Verigakis | # copyright notice, this list of conditions and the following
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13 | adee02b8 | Giorgos Verigakis | # disclaimer in the documentation and/or other materials
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14 | adee02b8 | Giorgos Verigakis | # provided with the distribution.
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15 | adee02b8 | Giorgos Verigakis | #
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16 | adee02b8 | Giorgos Verigakis | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | adee02b8 | Giorgos Verigakis | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | adee02b8 | Giorgos Verigakis | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | adee02b8 | Giorgos Verigakis | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | adee02b8 | Giorgos Verigakis | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | adee02b8 | Giorgos Verigakis | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | adee02b8 | Giorgos Verigakis | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | adee02b8 | Giorgos Verigakis | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | adee02b8 | Giorgos Verigakis | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | adee02b8 | Giorgos Verigakis | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | adee02b8 | Giorgos Verigakis | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | adee02b8 | Giorgos Verigakis | # POSSIBILITY OF SUCH DAMAGE.
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28 | adee02b8 | Giorgos Verigakis | #
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29 | adee02b8 | Giorgos Verigakis | # The views and conclusions contained in the software and
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30 | adee02b8 | Giorgos Verigakis | # documentation are those of the authors and should not be
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31 | adee02b8 | Giorgos Verigakis | # interpreted as representing official policies, either expressed
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32 | adee02b8 | Giorgos Verigakis | # or implied, of GRNET S.A.
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33 | 02feca11 | Vassilios Karakoidas | |
34 | 529178b1 | Giorgos Verigakis | from django.conf import settings |
35 | 207b70d5 | Giorgos Verigakis | from django.db import transaction |
36 | 207b70d5 | Giorgos Verigakis | |
37 | adee02b8 | Giorgos Verigakis | from synnefo.db.models import (VirtualMachine, Network, NetworkInterface, |
38 | adee02b8 | Giorgos Verigakis | NetworkLink) |
39 | 234f8b07 | Vangelis Koukis | from synnefo.logic import utils |
40 | 529178b1 | Giorgos Verigakis | from synnefo.util.rapi import GanetiRapiClient |
41 | 529178b1 | Giorgos Verigakis | |
42 | 529178b1 | Giorgos Verigakis | |
43 | 529178b1 | Giorgos Verigakis | rapi = GanetiRapiClient(*settings.GANETI_CLUSTER_INFO) |
44 | 529178b1 | Giorgos Verigakis | |
45 | 02feca11 | Vassilios Karakoidas | |
46 | ad2d6807 | Vangelis Koukis | def process_op_status(vm, jobid, opcode, status, logmsg): |
47 | ad2d6807 | Vangelis Koukis | """Process a job progress notification from the backend
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48 | 02feca11 | Vassilios Karakoidas |
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49 | 02feca11 | Vassilios Karakoidas | Process an incoming message from the backend (currently Ganeti).
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50 | 02feca11 | Vassilios Karakoidas | Job notifications with a terminating status (sucess, error, or canceled),
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51 | 02feca11 | Vassilios Karakoidas | also update the operating state of the VM.
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52 | 02feca11 | Vassilios Karakoidas |
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53 | 02feca11 | Vassilios Karakoidas | """
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54 | 02feca11 | Vassilios Karakoidas | if (opcode not in [x[0] for x in VirtualMachine.BACKEND_OPCODES] or |
55 | 02feca11 | Vassilios Karakoidas | status not in [x[0] for x in VirtualMachine.BACKEND_STATUSES]): |
56 | 02feca11 | Vassilios Karakoidas | raise VirtualMachine.InvalidBackendMsgError(opcode, status)
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57 | 02feca11 | Vassilios Karakoidas | |
58 | dfd19c2d | Vassilios Karakoidas | vm.backendjobid = jobid |
59 | dfd19c2d | Vassilios Karakoidas | vm.backendjobstatus = status |
60 | dfd19c2d | Vassilios Karakoidas | vm.backendopcode = opcode |
61 | dfd19c2d | Vassilios Karakoidas | vm.backendlogmsg = logmsg |
62 | 02feca11 | Vassilios Karakoidas | |
63 | 02feca11 | Vassilios Karakoidas | # Notifications of success change the operating state
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64 | ac63eb4f | Vangelis Koukis | if status == 'success' and VirtualMachine.OPER_STATE_FROM_OPCODE[opcode] is not None: |
65 | 234f8b07 | Vangelis Koukis | utils.update_state(vm, VirtualMachine.OPER_STATE_FROM_OPCODE[opcode]) |
66 | 685b219e | Vangelis Koukis | # Set the deleted flag explicitly, to cater for admin-initiated removals
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67 | 685b219e | Vangelis Koukis | if opcode == 'OP_INSTANCE_REMOVE': |
68 | 685b219e | Vangelis Koukis | vm.deleted = True
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69 | 685b219e | Vangelis Koukis | |
70 | 685b219e | Vangelis Koukis | # Special case: if OP_INSTANCE_CREATE fails --> ERROR
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71 | 02feca11 | Vassilios Karakoidas | if status in ('canceled', 'error') and opcode == 'OP_INSTANCE_CREATE': |
72 | 234f8b07 | Vangelis Koukis | utils.update_state(vm, 'ERROR')
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73 | 02feca11 | Vassilios Karakoidas | # Any other notification of failure leaves the operating state unchanged
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74 | 02feca11 | Vassilios Karakoidas | |
75 | 02feca11 | Vassilios Karakoidas | vm.save() |
76 | 22e52ede | Vassilios Karakoidas | |
77 | ad2d6807 | Vangelis Koukis | |
78 | 207b70d5 | Giorgos Verigakis | @transaction.commit_on_success
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79 | ad2d6807 | Vangelis Koukis | def process_net_status(vm, nics): |
80 | ad2d6807 | Vangelis Koukis | """Process a net status notification from the backend
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81 | ad2d6807 | Vangelis Koukis |
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82 | ad2d6807 | Vangelis Koukis | Process an incoming message from the Ganeti backend,
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83 | ad2d6807 | Vangelis Koukis | detailing the NIC configuration of a VM instance.
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84 | ad2d6807 | Vangelis Koukis |
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85 | ad2d6807 | Vangelis Koukis | Update the state of the VM in the DB accordingly.
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86 | ad2d6807 | Vangelis Koukis | """
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87 | 64938cb0 | Giorgos Verigakis | |
88 | 64938cb0 | Giorgos Verigakis | vm.nics.all().delete() |
89 | 64938cb0 | Giorgos Verigakis | for i, nic in enumerate(nics): |
90 | 64938cb0 | Giorgos Verigakis | if i == 0: |
91 | ca792e04 | Giorgos Verigakis | net = Network.objects.get(public=True)
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92 | 64938cb0 | Giorgos Verigakis | else:
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93 | a1dccf43 | Vangelis Koukis | try:
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94 | a1dccf43 | Vangelis Koukis | link = NetworkLink.objects.get(name=nic['link'])
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95 | a1dccf43 | Vangelis Koukis | except NetworkLink.DoesNotExist:
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96 | a1dccf43 | Vangelis Koukis | # Cannot find an instance of NetworkLink for
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97 | a1dccf43 | Vangelis Koukis | # the link attribute specified in the notification
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98 | a1dccf43 | Vangelis Koukis | raise NetworkLink.DoesNotExist("Cannot find a NetworkLink " |
99 | a1dccf43 | Vangelis Koukis | "object for link='%s'" % nic['link']) |
100 | 64938cb0 | Giorgos Verigakis | net = link.network |
101 | a1dccf43 | Vangelis Koukis | if net is None: |
102 | a1dccf43 | Vangelis Koukis | raise Network.DoesNotExist("NetworkLink for link='%s' not " |
103 | a1dccf43 | Vangelis Koukis | "associated with an existing Network instance." %
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104 | a1dccf43 | Vangelis Koukis | nic['link'])
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105 | a1dccf43 | Vangelis Koukis | |
106 | 64938cb0 | Giorgos Verigakis | vm.nics.create( |
107 | 64938cb0 | Giorgos Verigakis | network=net, |
108 | 64938cb0 | Giorgos Verigakis | index=i, |
109 | 64938cb0 | Giorgos Verigakis | mac=nic.get('mac', ''), |
110 | 746c6bf4 | Vangelis Koukis | ipv4=nic.get('ip', ''), |
111 | 746c6bf4 | Vangelis Koukis | ipv6=nic.get('ipv6','')) |
112 | ad2d6807 | Vangelis Koukis | vm.save() |
113 | ad2d6807 | Vangelis Koukis | |
114 | ad2d6807 | Vangelis Koukis | |
115 | 22e52ede | Vassilios Karakoidas | def start_action(vm, action): |
116 | 22e52ede | Vassilios Karakoidas | """Update the state of a VM when a new action is initiated."""
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117 | 22e52ede | Vassilios Karakoidas | if not action in [x[0] for x in VirtualMachine.ACTIONS]: |
118 | 22e52ede | Vassilios Karakoidas | raise VirtualMachine.InvalidActionError(action)
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119 | 22e52ede | Vassilios Karakoidas | |
120 | 22e52ede | Vassilios Karakoidas | # No actions to deleted and no actions beside destroy to suspended VMs
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121 | 22e52ede | Vassilios Karakoidas | if vm.deleted:
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122 | 5231a38a | Giorgos Verigakis | raise VirtualMachine.DeletedError
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123 | 30f3b5e5 | Vangelis Koukis | |
124 | 30f3b5e5 | Vangelis Koukis | # No actions to machines being built. They may be destroyed, however.
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125 | 30f3b5e5 | Vangelis Koukis | if vm.operstate == 'BUILD' and action != 'DESTROY': |
126 | 5231a38a | Giorgos Verigakis | raise VirtualMachine.BuildingError
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127 | 5231a38a | Giorgos Verigakis | |
128 | dfd19c2d | Vassilios Karakoidas | vm.action = action |
129 | dfd19c2d | Vassilios Karakoidas | vm.backendjobid = None
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130 | dfd19c2d | Vassilios Karakoidas | vm.backendopcode = None
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131 | dfd19c2d | Vassilios Karakoidas | vm.backendjobstatus = None
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132 | dfd19c2d | Vassilios Karakoidas | vm.backendlogmsg = None
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133 | 22e52ede | Vassilios Karakoidas | |
134 | 22e52ede | Vassilios Karakoidas | # Update the relevant flags if the VM is being suspended or destroyed
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135 | 22e52ede | Vassilios Karakoidas | if action == "DESTROY": |
136 | 22e52ede | Vassilios Karakoidas | vm.deleted = True
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137 | 22e52ede | Vassilios Karakoidas | elif action == "SUSPEND": |
138 | 22e52ede | Vassilios Karakoidas | vm.suspended = True
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139 | 22e52ede | Vassilios Karakoidas | elif action == "START": |
140 | 22e52ede | Vassilios Karakoidas | vm.suspended = False
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141 | 22e52ede | Vassilios Karakoidas | vm.save() |
142 | 529178b1 | Giorgos Verigakis | |
143 | ad2d6807 | Vangelis Koukis | |
144 | 1ef58e5b | Constantinos Venetsanopoulos | def create_instance(vm, flavor, image, password): |
145 | 64938cb0 | Giorgos Verigakis | |
146 | 64938cb0 | Giorgos Verigakis | nic = {'ip': 'pool', 'mode': 'routed', 'link': settings.GANETI_PUBLIC_LINK} |
147 | 64938cb0 | Giorgos Verigakis | |
148 | 529178b1 | Giorgos Verigakis | return rapi.CreateInstance(
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149 | 529178b1 | Giorgos Verigakis | mode='create',
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150 | 12fd6446 | Giorgos Verigakis | name=vm.backend_id, |
151 | 529178b1 | Giorgos Verigakis | disk_template='plain',
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152 | f533f224 | Vangelis Koukis | disks=[{"size": 4000}], #FIXME: Always ask for a 4GB disk for now |
153 | 64938cb0 | Giorgos Verigakis | nics=[nic], |
154 | 1ef58e5b | Constantinos Venetsanopoulos | os='image+default',
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155 | 529178b1 | Giorgos Verigakis | ip_check=False,
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156 | 529178b1 | Giorgos Verigakis | name_check=False,
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157 | f533f224 | Vangelis Koukis | pnode=rapi.GetNodes()[0], #TODO: use a Ganeti iallocator instead |
158 | 529178b1 | Giorgos Verigakis | dry_run=settings.TEST, |
159 | 1ef58e5b | Constantinos Venetsanopoulos | beparams=dict(auto_balance=True, vcpus=flavor.cpu, memory=flavor.ram), |
160 | f533f224 | Vangelis Koukis | osparams=dict(img_id=image.backend_id, img_passwd=password,
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161 | f533f224 | Vangelis Koukis | img_format=image.format)) |
162 | f533f224 | Vangelis Koukis | |
163 | 529178b1 | Giorgos Verigakis | |
164 | 529178b1 | Giorgos Verigakis | def delete_instance(vm): |
165 | 529178b1 | Giorgos Verigakis | start_action(vm, 'DESTROY')
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166 | 64938cb0 | Giorgos Verigakis | rapi.DeleteInstance(vm.backend_id, dry_run=settings.TEST) |
167 | d44c236b | Giorgos Verigakis | vm.nics.all().delete() |
168 | 529178b1 | Giorgos Verigakis | |
169 | ad2d6807 | Vangelis Koukis | |
170 | 529178b1 | Giorgos Verigakis | def reboot_instance(vm, reboot_type): |
171 | 529178b1 | Giorgos Verigakis | assert reboot_type in ('soft', 'hard') |
172 | 64938cb0 | Giorgos Verigakis | rapi.RebootInstance(vm.backend_id, reboot_type, dry_run=settings.TEST) |
173 | 529178b1 | Giorgos Verigakis | |
174 | ad2d6807 | Vangelis Koukis | |
175 | 529178b1 | Giorgos Verigakis | def startup_instance(vm): |
176 | 529178b1 | Giorgos Verigakis | start_action(vm, 'START')
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177 | 64938cb0 | Giorgos Verigakis | rapi.StartupInstance(vm.backend_id, dry_run=settings.TEST) |
178 | 529178b1 | Giorgos Verigakis | |
179 | ad2d6807 | Vangelis Koukis | |
180 | 529178b1 | Giorgos Verigakis | def shutdown_instance(vm): |
181 | 529178b1 | Giorgos Verigakis | start_action(vm, 'STOP')
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182 | 64938cb0 | Giorgos Verigakis | rapi.ShutdownInstance(vm.backend_id, dry_run=settings.TEST) |
183 | 529178b1 | Giorgos Verigakis | |
184 | ad2d6807 | Vangelis Koukis | |
185 | 529178b1 | Giorgos Verigakis | def get_instance_console(vm): |
186 | 529178b1 | Giorgos Verigakis | return rapi.GetInstanceConsole(vm.backend_id)
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187 | 64938cb0 | Giorgos Verigakis | |
188 | 64938cb0 | Giorgos Verigakis | |
189 | 604b2bf8 | Georgios Gousios | def request_status_update(vm): |
190 | 604b2bf8 | Georgios Gousios | return rapi.GetInstanceInfo(vm.backend_id)
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191 | 604b2bf8 | Georgios Gousios | |
192 | 604b2bf8 | Georgios Gousios | |
193 | 604b2bf8 | Georgios Gousios | def get_job_status(jobid): |
194 | 604b2bf8 | Georgios Gousios | return rapi.GetJobStatus(jobid)
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195 | 604b2bf8 | Georgios Gousios | |
196 | 604b2bf8 | Georgios Gousios | |
197 | 604b2bf8 | Georgios Gousios | def update_status(vm, status): |
198 | db7a3230 | Vangelis Koukis | utils.update_state(vm, status) |
199 | f533f224 | Vangelis Koukis | |
200 | 64938cb0 | Giorgos Verigakis | def create_network_link(): |
201 | 64938cb0 | Giorgos Verigakis | try:
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202 | 64938cb0 | Giorgos Verigakis | last = NetworkLink.objects.order_by('-index')[0] |
203 | 64938cb0 | Giorgos Verigakis | index = last.index + 1
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204 | 64938cb0 | Giorgos Verigakis | except IndexError: |
205 | 64938cb0 | Giorgos Verigakis | index = 1
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206 | 64938cb0 | Giorgos Verigakis | |
207 | 64938cb0 | Giorgos Verigakis | if index <= settings.GANETI_MAX_LINK_NUMBER:
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208 | 64938cb0 | Giorgos Verigakis | name = '%s%d' % (settings.GANETI_LINK_PREFIX, index)
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209 | f533f224 | Vangelis Koukis | return NetworkLink.objects.create(index=index, name=name,
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210 | a191bd4d | Giorgos Verigakis | available=True)
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211 | 64938cb0 | Giorgos Verigakis | return None # All link slots are filled |
212 | 64938cb0 | Giorgos Verigakis | |
213 | 207b70d5 | Giorgos Verigakis | @transaction.commit_on_success
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214 | a3992827 | Giorgos Verigakis | def create_network(name, owner): |
215 | 64938cb0 | Giorgos Verigakis | try:
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216 | 64938cb0 | Giorgos Verigakis | link = NetworkLink.objects.filter(available=True)[0] |
217 | 64938cb0 | Giorgos Verigakis | except IndexError: |
218 | 64938cb0 | Giorgos Verigakis | link = create_network_link() |
219 | 64938cb0 | Giorgos Verigakis | if not link: |
220 | a3992827 | Giorgos Verigakis | return None |
221 | a3992827 | Giorgos Verigakis | |
222 | a3992827 | Giorgos Verigakis | network = Network.objects.create( |
223 | a3992827 | Giorgos Verigakis | name=name, |
224 | a3992827 | Giorgos Verigakis | owner=owner, |
225 | a3992827 | Giorgos Verigakis | state='ACTIVE',
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226 | a3992827 | Giorgos Verigakis | link=link) |
227 | a3992827 | Giorgos Verigakis | |
228 | a3992827 | Giorgos Verigakis | link.network = network |
229 | 64938cb0 | Giorgos Verigakis | link.available = False
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230 | 64938cb0 | Giorgos Verigakis | link.save() |
231 | a3992827 | Giorgos Verigakis | |
232 | a3992827 | Giorgos Verigakis | return network
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233 | 64938cb0 | Giorgos Verigakis | |
234 | 207b70d5 | Giorgos Verigakis | @transaction.commit_on_success
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235 | 64938cb0 | Giorgos Verigakis | def delete_network(net): |
236 | 64938cb0 | Giorgos Verigakis | link = net.link |
237 | 06a16b24 | Giorgos Verigakis | if link.name != settings.GANETI_NULL_LINK:
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238 | 06a16b24 | Giorgos Verigakis | link.available = True
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239 | 06a16b24 | Giorgos Verigakis | link.network = None
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240 | 06a16b24 | Giorgos Verigakis | link.save() |
241 | 64938cb0 | Giorgos Verigakis | |
242 | 64938cb0 | Giorgos Verigakis | for vm in net.machines.all(): |
243 | 64938cb0 | Giorgos Verigakis | disconnect_from_network(vm, net) |
244 | 64938cb0 | Giorgos Verigakis | vm.save() |
245 | 64938cb0 | Giorgos Verigakis | net.state = 'DELETED'
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246 | 64938cb0 | Giorgos Verigakis | net.save() |
247 | 64938cb0 | Giorgos Verigakis | |
248 | 64938cb0 | Giorgos Verigakis | def connect_to_network(vm, net): |
249 | 64938cb0 | Giorgos Verigakis | nic = {'mode': 'bridged', 'link': net.link.name} |
250 | ca792e04 | Giorgos Verigakis | rapi.ModifyInstance(vm.backend_id, |
251 | ca792e04 | Giorgos Verigakis | nics=[('add', nic)],
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252 | ca792e04 | Giorgos Verigakis | dry_run=settings.TEST) |
253 | 64938cb0 | Giorgos Verigakis | |
254 | 64938cb0 | Giorgos Verigakis | def disconnect_from_network(vm, net): |
255 | ca792e04 | Giorgos Verigakis | nics = vm.nics.filter(network__public=False).order_by('index') |
256 | ca792e04 | Giorgos Verigakis | new_nics = [nic for nic in nics if nic.network != net] |
257 | ca792e04 | Giorgos Verigakis | if new_nics == nics:
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258 | ca792e04 | Giorgos Verigakis | return # Nothing to remove |
259 | ca792e04 | Giorgos Verigakis | ops = [('remove', {})]
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260 | ca792e04 | Giorgos Verigakis | for i, nic in enumerate(new_nics): |
261 | ca792e04 | Giorgos Verigakis | ops.append((i + 1, {
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262 | 64938cb0 | Giorgos Verigakis | 'mode': 'bridged', |
263 | ca792e04 | Giorgos Verigakis | 'link': nic.network.link.name}))
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264 | ca792e04 | Giorgos Verigakis | rapi.ModifyInstance(vm.backend_id, nics=ops, dry_run=settings.TEST) |
265 | 91826390 | Giorgos Verigakis | |
266 | 26563957 | Giorgos Verigakis | |
267 | 26563957 | Giorgos Verigakis | _firewall_tags = { |
268 | 26563957 | Giorgos Verigakis | 'ENABLED': settings.GANETI_FIREWALL_ENABLED_TAG,
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269 | 26563957 | Giorgos Verigakis | 'DISABLED': settings.GANETI_FIREWALL_DISABLED_TAG,
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270 | 26563957 | Giorgos Verigakis | 'PROTECTED': settings.GANETI_FIREWALL_PROTECTED_TAG}
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271 | 26563957 | Giorgos Verigakis | |
272 | 91826390 | Giorgos Verigakis | def set_firewall_profile(vm, profile): |
273 | 26563957 | Giorgos Verigakis | try:
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274 | 26563957 | Giorgos Verigakis | tag = _firewall_tags[profile] |
275 | 26563957 | Giorgos Verigakis | except KeyError: |
276 | 91826390 | Giorgos Verigakis | raise ValueError("Unsopported Firewall Profile: %s" % profile) |
277 | 91826390 | Giorgos Verigakis | |
278 | 26563957 | Giorgos Verigakis | # Delete all firewall tags
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279 | 26563957 | Giorgos Verigakis | rapi.DeleteInstanceTags(vm.backend_id, _firewall_tags.values(), |
280 | 26563957 | Giorgos Verigakis | dry_run=settings.TEST) |
281 | 26563957 | Giorgos Verigakis | |
282 | 26563957 | Giorgos Verigakis | rapi.AddInstanceTags(vm.backend_id, [tag], dry_run=settings.TEST) |