root / snf-cyclades-app / synnefo / logic / callbacks.py @ d7841399
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1 | cb409cfd | Georgios Gousios | # Copyright 2011 GRNET S.A. All rights reserved.
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2 | ad2d6807 | Vangelis Koukis | #
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3 | cb409cfd | Georgios Gousios | # Redistribution and use in source and binary forms, with or without
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4 | cb409cfd | Georgios Gousios | # modification, are permitted provided that the following conditions
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5 | cb409cfd | Georgios Gousios | # are met:
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6 | ad2d6807 | Vangelis Koukis | #
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7 | cb409cfd | Georgios Gousios | # 1. Redistributions of source code must retain the above copyright
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8 | cb409cfd | Georgios Gousios | # notice, this list of conditions and the following disclaimer.
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9 | ad2d6807 | Vangelis Koukis | #
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10 | cb409cfd | Georgios Gousios | # 2. Redistributions in binary form must reproduce the above copyright
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11 | cb409cfd | Georgios Gousios | # notice, this list of conditions and the following disclaimer in the
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12 | cb409cfd | Georgios Gousios | # documentation and/or other materials provided with the distribution.
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13 | cb409cfd | Georgios Gousios | #
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14 | cb409cfd | Georgios Gousios | # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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15 | cb409cfd | Georgios Gousios | # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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16 | cb409cfd | Georgios Gousios | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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17 | cb409cfd | Georgios Gousios | # ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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18 | cb409cfd | Georgios Gousios | # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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19 | cb409cfd | Georgios Gousios | # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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20 | cb409cfd | Georgios Gousios | # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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21 | cb409cfd | Georgios Gousios | # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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22 | cb409cfd | Georgios Gousios | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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23 | cb409cfd | Georgios Gousios | # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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24 | cb409cfd | Georgios Gousios | # SUCH DAMAGE.
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25 | cb409cfd | Georgios Gousios | #
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26 | cb409cfd | Georgios Gousios | # The views and conclusions contained in the software and documentation are
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27 | cb409cfd | Georgios Gousios | # those of the authors and should not be interpreted as representing official
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28 | cb409cfd | Georgios Gousios | # policies, either expressed or implied, of GRNET S.A.
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29 | cb409cfd | Georgios Gousios | |
30 | cb409cfd | Georgios Gousios | # Callback functions used by the dispatcher to process incoming notifications
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31 | cb409cfd | Georgios Gousios | # from AMQP queues.
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32 | cb409cfd | Georgios Gousios | |
33 | 86f046a8 | Giorgos Verigakis | import logging |
34 | 23c84263 | Georgios Gousios | import json |
35 | c4e55622 | Christos Stavrakakis | from functools import wraps |
36 | 23c84263 | Georgios Gousios | |
37 | 22ee6892 | Christos Stavrakakis | from synnefo.db.models import Backend, VirtualMachine, Network, BackendNetwork |
38 | 1ed37c1d | Giorgos Verigakis | from synnefo.logic import utils, backend |
39 | 23c84263 | Georgios Gousios | |
40 | c4e55622 | Christos Stavrakakis | from synnefo.lib.utils import merge_time |
41 | c4e55622 | Christos Stavrakakis | |
42 | fdfd8c6d | Christos Stavrakakis | log = logging.getLogger(__name__) |
43 | 23c84263 | Georgios Gousios | |
44 | a17a8e98 | Christos Stavrakakis | def handle_message_delivery(func): |
45 | a17a8e98 | Christos Stavrakakis | """ Generic decorator for handling messages.
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46 | c4e55622 | Christos Stavrakakis |
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47 | a17a8e98 | Christos Stavrakakis | This decorator is responsible for converting the message into json format,
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48 | a17a8e98 | Christos Stavrakakis | handling of common exceptions and acknowledment of message if needed.
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49 | c4e55622 | Christos Stavrakakis |
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50 | c4e55622 | Christos Stavrakakis | """
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51 | c4e55622 | Christos Stavrakakis | @wraps(func)
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52 | c4e55622 | Christos Stavrakakis | def wrapper(client, message, *args, **kwargs): |
53 | c4e55622 | Christos Stavrakakis | try:
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54 | c4e55622 | Christos Stavrakakis | msg = json.loads(message['body'])
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55 | a17a8e98 | Christos Stavrakakis | func(msg) |
56 | a17a8e98 | Christos Stavrakakis | client.basic_ack(message) |
57 | 22ee6892 | Christos Stavrakakis | except ValueError as e: |
58 | 22ee6892 | Christos Stavrakakis | log.error("Incoming message not in JSON format %s: %s", e, message)
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59 | b9d91e62 | Christos Stavrakakis | client.basic_nack(message) |
60 | 22ee6892 | Christos Stavrakakis | except KeyError as e: |
61 | 22ee6892 | Christos Stavrakakis | log.error("Malformed incoming JSON, missing attribute %s: %s",
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62 | 22ee6892 | Christos Stavrakakis | e, message) |
63 | b9d91e62 | Christos Stavrakakis | client.basic_nack(message) |
64 | a17a8e98 | Christos Stavrakakis | except Exception as e: |
65 | a17a8e98 | Christos Stavrakakis | log.exception("Unexpected error: %s, msg: %s", e, msg)
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66 | b9d91e62 | Christos Stavrakakis | client.basic_reject(message) |
67 | a17a8e98 | Christos Stavrakakis | |
68 | a17a8e98 | Christos Stavrakakis | return wrapper
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69 | a17a8e98 | Christos Stavrakakis | |
70 | 22ee6892 | Christos Stavrakakis | |
71 | a17a8e98 | Christos Stavrakakis | def instance_from_msg(func): |
72 | a17a8e98 | Christos Stavrakakis | """ Decorator for getting the VirtualMachine object of the msg.
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73 | a17a8e98 | Christos Stavrakakis |
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74 | a17a8e98 | Christos Stavrakakis | """
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75 | a17a8e98 | Christos Stavrakakis | @handle_message_delivery
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76 | a17a8e98 | Christos Stavrakakis | @wraps(func)
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77 | a17a8e98 | Christos Stavrakakis | def wrapper(msg): |
78 | a17a8e98 | Christos Stavrakakis | try:
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79 | a17a8e98 | Christos Stavrakakis | vm_id = utils.id_from_instance_name(msg["instance"])
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80 | 7f2dbcad | Christos Stavrakakis | vm = VirtualMachine.objects.select_for_update().get(id=vm_id) |
81 | a17a8e98 | Christos Stavrakakis | func(vm, msg) |
82 | c4e55622 | Christos Stavrakakis | except VirtualMachine.InvalidBackendIdError:
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83 | c4e55622 | Christos Stavrakakis | log.debug("Ignoring msg for unknown instance %s.", msg['instance']) |
84 | c4e55622 | Christos Stavrakakis | except VirtualMachine.DoesNotExist:
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85 | c4e55622 | Christos Stavrakakis | log.error("VM for instance %s with id %d not found in DB.",
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86 | c4e55622 | Christos Stavrakakis | msg['instance'], vm_id)
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87 | 15cb13b5 | Christos Stavrakakis | except Network.InvalidBackendIdError, Network.DoesNotExist:
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88 | 15cb13b5 | Christos Stavrakakis | log.error("Invalid message", msg)
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89 | a17a8e98 | Christos Stavrakakis | return wrapper
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90 | a17a8e98 | Christos Stavrakakis | |
91 | 22ee6892 | Christos Stavrakakis | |
92 | a17a8e98 | Christos Stavrakakis | def network_from_msg(func): |
93 | 22ee6892 | Christos Stavrakakis | """ Decorator for getting the BackendNetwork object of the msg.
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94 | a17a8e98 | Christos Stavrakakis |
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95 | a17a8e98 | Christos Stavrakakis | """
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96 | a17a8e98 | Christos Stavrakakis | @handle_message_delivery
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97 | a17a8e98 | Christos Stavrakakis | @wraps(func)
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98 | a17a8e98 | Christos Stavrakakis | def wrapper(msg): |
99 | a17a8e98 | Christos Stavrakakis | try:
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100 | a17a8e98 | Christos Stavrakakis | network_id = utils.id_from_network_name(msg["network"])
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101 | d2e73c0c | Christos Stavrakakis | network = Network.objects.select_for_update().get(id=network_id) |
102 | 22ee6892 | Christos Stavrakakis | backend = Backend.objects.get(clustername=msg['cluster'])
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103 | 22ee6892 | Christos Stavrakakis | backend_network = BackendNetwork.objects.get(network=network, |
104 | 22ee6892 | Christos Stavrakakis | backend=backend) |
105 | 22ee6892 | Christos Stavrakakis | func(backend_network, msg) |
106 | a17a8e98 | Christos Stavrakakis | except Network.InvalidBackendIdError:
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107 | a17a8e98 | Christos Stavrakakis | log.debug("Ignoring msg for unknown network %s.", msg['network']) |
108 | a17a8e98 | Christos Stavrakakis | except Network.DoesNotExist:
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109 | 22ee6892 | Christos Stavrakakis | log.error("Network %s not found in DB.", msg['network']) |
110 | 22ee6892 | Christos Stavrakakis | except Backend.DoesNotExist:
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111 | 22ee6892 | Christos Stavrakakis | log.error("Backend %s not found in DB.", msg['cluster']) |
112 | 22ee6892 | Christos Stavrakakis | except BackendNetwork.DoesNotExist:
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113 | 22ee6892 | Christos Stavrakakis | log.error("Network %s on backend %s not found in DB.",
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114 | 22ee6892 | Christos Stavrakakis | msg['network'], msg['cluster']) |
115 | a17a8e98 | Christos Stavrakakis | return wrapper
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116 | a17a8e98 | Christos Stavrakakis | |
117 | 22ee6892 | Christos Stavrakakis | |
118 | a17a8e98 | Christos Stavrakakis | def if_update_required(func): |
119 | a17a8e98 | Christos Stavrakakis | """
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120 | a17a8e98 | Christos Stavrakakis | Decorator for checking if an incoming message needs to update the db.
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121 | a17a8e98 | Christos Stavrakakis |
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122 | a17a8e98 | Christos Stavrakakis | The database will not be updated in the following cases:
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123 | a17a8e98 | Christos Stavrakakis | - The message has been redelivered and the action has already been
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124 | a17a8e98 | Christos Stavrakakis | completed. In this case the event_time will be equal with the one
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125 | a17a8e98 | Christos Stavrakakis | in the database.
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126 | 22ee6892 | Christos Stavrakakis | - The message describes a previous state in the ganeti, from the one that
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127 | 22ee6892 | Christos Stavrakakis | is described in the db. In this case the event_time will be smaller from
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128 | 22ee6892 | Christos Stavrakakis | the one in the database.
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129 | a17a8e98 | Christos Stavrakakis |
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130 | a17a8e98 | Christos Stavrakakis | """
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131 | a17a8e98 | Christos Stavrakakis | @wraps(func)
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132 | a17a8e98 | Christos Stavrakakis | def wrapper(target, msg): |
133 | bb80a8d7 | Christos Stavrakakis | try:
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134 | bb80a8d7 | Christos Stavrakakis | event_time = merge_time(msg['event_time'])
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135 | bb80a8d7 | Christos Stavrakakis | except:
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136 | bb80a8d7 | Christos Stavrakakis | log.error("Received message with malformed time: %s",
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137 | bb80a8d7 | Christos Stavrakakis | msg['event_time'])
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138 | bb80a8d7 | Christos Stavrakakis | raise KeyError |
139 | bb80a8d7 | Christos Stavrakakis | |
140 | a17a8e98 | Christos Stavrakakis | db_time = target.backendtime |
141 | a17a8e98 | Christos Stavrakakis | |
142 | 22ee6892 | Christos Stavrakakis | if db_time and event_time <= db_time: |
143 | a17a8e98 | Christos Stavrakakis | format_ = "%d/%m/%y %H:%M:%S:%f"
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144 | a17a8e98 | Christos Stavrakakis | log.debug("Ignoring message %s.\nevent_timestamp: %s db_timestamp: %s",
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145 | a17a8e98 | Christos Stavrakakis | msg, |
146 | a17a8e98 | Christos Stavrakakis | event_time.strftime(format_), |
147 | a17a8e98 | Christos Stavrakakis | db_time.strftime(format_)) |
148 | a17a8e98 | Christos Stavrakakis | return
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149 | a17a8e98 | Christos Stavrakakis | # New message. Update the database!
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150 | a17a8e98 | Christos Stavrakakis | func(target, msg, event_time) |
151 | c4e55622 | Christos Stavrakakis | |
152 | c4e55622 | Christos Stavrakakis | return wrapper
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153 | c4e55622 | Christos Stavrakakis | |
154 | c4e55622 | Christos Stavrakakis | |
155 | a17a8e98 | Christos Stavrakakis | @instance_from_msg
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156 | a17a8e98 | Christos Stavrakakis | @if_update_required
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157 | a17a8e98 | Christos Stavrakakis | def update_db(vm, msg, event_time): |
158 | c25cc9ec | Vangelis Koukis | """Process a notification of type 'ganeti-op-status'"""
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159 | 33b93f81 | Christos Stavrakakis | log.debug("Processing ganeti-op-status msg: %s", msg)
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160 | 23c84263 | Georgios Gousios | |
161 | c4e55622 | Christos Stavrakakis | if msg['type'] != "ganeti-op-status": |
162 | c4e55622 | Christos Stavrakakis | log.error("Message is of unknown type %s.", msg['type']) |
163 | c4e55622 | Christos Stavrakakis | return
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164 | 7ca9e930 | Vangelis Koukis | |
165 | c4e55622 | Christos Stavrakakis | backend.process_op_status(vm, event_time, msg['jobId'], msg['operation'], |
166 | c4e55622 | Christos Stavrakakis | msg['status'], msg['logmsg']) |
167 | c4e55622 | Christos Stavrakakis | |
168 | c4e55622 | Christos Stavrakakis | log.debug("Done processing ganeti-op-status msg for vm %s.",
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169 | c4e55622 | Christos Stavrakakis | msg['instance'])
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170 | c4e55622 | Christos Stavrakakis | |
171 | c4e55622 | Christos Stavrakakis | |
172 | a17a8e98 | Christos Stavrakakis | @instance_from_msg
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173 | a17a8e98 | Christos Stavrakakis | @if_update_required
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174 | a17a8e98 | Christos Stavrakakis | def update_net(vm, msg, event_time): |
175 | c25cc9ec | Vangelis Koukis | """Process a notification of type 'ganeti-net-status'"""
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176 | 33b93f81 | Christos Stavrakakis | log.debug("Processing ganeti-net-status msg: %s", msg)
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177 | 7ca9e930 | Vangelis Koukis | |
178 | c4e55622 | Christos Stavrakakis | if msg['type'] != "ganeti-net-status": |
179 | c4e55622 | Christos Stavrakakis | log.error("Message is of unknown type %s", msg['type']) |
180 | c4e55622 | Christos Stavrakakis | return
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181 | 9068cd85 | Georgios Gousios | |
182 | c4e55622 | Christos Stavrakakis | backend.process_net_status(vm, event_time, msg['nics'])
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183 | 604b2bf8 | Georgios Gousios | |
184 | c4e55622 | Christos Stavrakakis | log.debug("Done processing ganeti-net-status msg for vm %s.",
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185 | c4e55622 | Christos Stavrakakis | msg["instance"])
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186 | 604b2bf8 | Georgios Gousios | |
187 | 604b2bf8 | Georgios Gousios | |
188 | a17a8e98 | Christos Stavrakakis | @network_from_msg
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189 | a17a8e98 | Christos Stavrakakis | @if_update_required
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190 | a17a8e98 | Christos Stavrakakis | def update_network(network, msg, event_time): |
191 | a17a8e98 | Christos Stavrakakis | """Process a notification of type 'ganeti-network-status'"""
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192 | a17a8e98 | Christos Stavrakakis | log.debug("Processing ganeti-network-status msg: %s", msg)
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193 | a17a8e98 | Christos Stavrakakis | |
194 | a17a8e98 | Christos Stavrakakis | if msg['type'] != "ganeti-network-status": |
195 | a17a8e98 | Christos Stavrakakis | log.error("Message is of unknown type %s.", msg['type']) |
196 | a17a8e98 | Christos Stavrakakis | return
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197 | a17a8e98 | Christos Stavrakakis | |
198 | fd2bdbb2 | Christos Stavrakakis | opcode = msg['operation']
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199 | fd2bdbb2 | Christos Stavrakakis | status = msg['status']
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200 | fd2bdbb2 | Christos Stavrakakis | jobid = msg['jobId']
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201 | fd2bdbb2 | Christos Stavrakakis | |
202 | fd2bdbb2 | Christos Stavrakakis | if opcode == "OP_NETWORK_SET_PARAMS": |
203 | fd2bdbb2 | Christos Stavrakakis | backend.process_network_modify(network, event_time, jobid, opcode, |
204 | fd2bdbb2 | Christos Stavrakakis | status, msg['add_reserved_ips'],
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205 | fd2bdbb2 | Christos Stavrakakis | msg['remove_reserved_ips'])
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206 | fd2bdbb2 | Christos Stavrakakis | else:
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207 | fd2bdbb2 | Christos Stavrakakis | backend.process_network_status(network, event_time, jobid, opcode, |
208 | fd2bdbb2 | Christos Stavrakakis | status, msg['logmsg'])
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209 | a17a8e98 | Christos Stavrakakis | |
210 | 22ee6892 | Christos Stavrakakis | log.debug("Done processing ganeti-network-status msg for network %s.",
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211 | 22ee6892 | Christos Stavrakakis | msg['network'])
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212 | a17a8e98 | Christos Stavrakakis | |
213 | a17a8e98 | Christos Stavrakakis | |
214 | a17a8e98 | Christos Stavrakakis | @instance_from_msg
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215 | a17a8e98 | Christos Stavrakakis | @if_update_required
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216 | a17a8e98 | Christos Stavrakakis | def update_build_progress(vm, msg, event_time): |
217 | 6138f0ef | Kostas Papadimitriou | """
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218 | 6138f0ef | Kostas Papadimitriou | Process a create progress message. Update build progress, or create
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219 | 6138f0ef | Kostas Papadimitriou | appropriate diagnostic entries for the virtual machine instance.
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220 | 6138f0ef | Kostas Papadimitriou | """
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221 | 33b93f81 | Christos Stavrakakis | log.debug("Processing ganeti-create-progress msg: %s", msg)
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222 | 604b2bf8 | Georgios Gousios | |
223 | a3b1aee2 | Nikos Skalkotos | if msg['type'] not in ('image-copy-progress', 'image-error', 'image-info', |
224 | a3b1aee2 | Nikos Skalkotos | 'image-warning', 'image-helper'): |
225 | c4e55622 | Christos Stavrakakis | log.error("Message is of unknown type %s", msg['type']) |
226 | c4e55622 | Christos Stavrakakis | return
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227 | c25cc9ec | Vangelis Koukis | |
228 | 0827883e | Nikos Skalkotos | if msg['type'] == 'image-copy-progress': |
229 | 0827883e | Nikos Skalkotos | backend.process_create_progress(vm, event_time, msg['progress'])
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230 | 6138f0ef | Kostas Papadimitriou | # we do not add diagnostic messages for copy-progress messages
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231 | 6138f0ef | Kostas Papadimitriou | return
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232 | 6138f0ef | Kostas Papadimitriou | |
233 | 6138f0ef | Kostas Papadimitriou | # default diagnostic fields
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234 | 6138f0ef | Kostas Papadimitriou | source = msg['type']
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235 | 6138f0ef | Kostas Papadimitriou | level = 'DEBUG'
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236 | 6138f0ef | Kostas Papadimitriou | message = msg.get('messages', None) |
237 | 6138f0ef | Kostas Papadimitriou | if isinstance(message, list): |
238 | 6138f0ef | Kostas Papadimitriou | message = " ".join(message)
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239 | 6138f0ef | Kostas Papadimitriou | |
240 | 6138f0ef | Kostas Papadimitriou | details = msg.get('stderr', None) |
241 | 6138f0ef | Kostas Papadimitriou | |
242 | 6138f0ef | Kostas Papadimitriou | if msg['type'] == 'image-helper': |
243 | 6138f0ef | Kostas Papadimitriou | # for helper task events join subtype to diagnostic source and
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244 | 6138f0ef | Kostas Papadimitriou | # set task name as diagnostic message
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245 | 6138f0ef | Kostas Papadimitriou | if msg.get('subtype', None) and msg.get('subtype') in ['task-start', |
246 | 6138f0ef | Kostas Papadimitriou | 'task-end']:
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247 | 6138f0ef | Kostas Papadimitriou | message = msg.get('task', message)
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248 | 6138f0ef | Kostas Papadimitriou | source = "%s-%s" % (source, msg.get('subtype')) |
249 | 6138f0ef | Kostas Papadimitriou | |
250 | 6138f0ef | Kostas Papadimitriou | if msg.get('subtype', None) == 'warning': |
251 | 6138f0ef | Kostas Papadimitriou | level = 'WARNING'
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252 | 6138f0ef | Kostas Papadimitriou | |
253 | 6138f0ef | Kostas Papadimitriou | if msg.get('subtype', None) == 'error': |
254 | 6138f0ef | Kostas Papadimitriou | level = 'ERROR'
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255 | 6138f0ef | Kostas Papadimitriou | |
256 | 6138f0ef | Kostas Papadimitriou | if msg.get('subtype', None) == 'info': |
257 | 6138f0ef | Kostas Papadimitriou | level = 'INFO'
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258 | 6138f0ef | Kostas Papadimitriou | |
259 | 6138f0ef | Kostas Papadimitriou | if msg['type'] == 'image-error': |
260 | 6138f0ef | Kostas Papadimitriou | level = 'ERROR'
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261 | 6138f0ef | Kostas Papadimitriou | |
262 | 6138f0ef | Kostas Papadimitriou | if msg['type'] == 'image-warning': |
263 | 6138f0ef | Kostas Papadimitriou | level = 'WARNING'
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264 | 6138f0ef | Kostas Papadimitriou | |
265 | 6138f0ef | Kostas Papadimitriou | if not message.strip(): |
266 | 6138f0ef | Kostas Papadimitriou | message = " ".join(source.split("-")).capitalize() |
267 | 6138f0ef | Kostas Papadimitriou | |
268 | 6138f0ef | Kostas Papadimitriou | # create the diagnostic entry
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269 | 6138f0ef | Kostas Papadimitriou | backend.create_instance_diagnostic(vm, message, source, level, event_time, |
270 | 6138f0ef | Kostas Papadimitriou | details=details) |
271 | 604b2bf8 | Georgios Gousios | |
272 | c4e55622 | Christos Stavrakakis | log.debug("Done processing ganeti-create-progress msg for vm %s.",
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273 | c4e55622 | Christos Stavrakakis | msg['instance'])
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274 | 604b2bf8 | Georgios Gousios | |
275 | 604b2bf8 | Georgios Gousios | |
276 | a17a8e98 | Christos Stavrakakis | def dummy_proc(client, message, *args, **kwargs): |
277 | 23c84263 | Georgios Gousios | try:
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278 | c4e55622 | Christos Stavrakakis | log.debug("Msg: %s", message['body']) |
279 | 33b93f81 | Christos Stavrakakis | client.basic_ack(message) |
280 | 23c84263 | Georgios Gousios | except Exception as e: |
281 | 22ee6892 | Christos Stavrakakis | log.exception("Could not receive message %s" % e) |