root / logic / callbacks.py @ 583bfaa0
History | View | Annotate | Download (8.3 kB)
1 |
# Copyright 2011 GRNET S.A. All rights reserved.
|
---|---|
2 |
#
|
3 |
# Redistribution and use in source and binary forms, with or without
|
4 |
# modification, are permitted provided that the following conditions
|
5 |
# are met:
|
6 |
#
|
7 |
# 1. Redistributions of source code must retain the above copyright
|
8 |
# notice, this list of conditions and the following disclaimer.
|
9 |
#
|
10 |
# 2. Redistributions in binary form must reproduce the above copyright
|
11 |
# notice, this list of conditions and the following disclaimer in the
|
12 |
# documentation and/or other materials provided with the distribution.
|
13 |
#
|
14 |
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
15 |
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
16 |
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
17 |
# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
18 |
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
19 |
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
20 |
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
21 |
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
22 |
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
23 |
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
24 |
# SUCH DAMAGE.
|
25 |
#
|
26 |
# The views and conclusions contained in the software and documentation are
|
27 |
# those of the authors and should not be interpreted as representing official
|
28 |
# policies, either expressed or implied, of GRNET S.A.
|
29 |
|
30 |
# Callback functions used by the dispatcher to process incoming notifications
|
31 |
# from AMQP queues.
|
32 |
|
33 |
import socket |
34 |
import traceback |
35 |
import json |
36 |
import sys |
37 |
|
38 |
from synnefo.db.models import VirtualMachine |
39 |
from synnefo.logic import utils, backend, email_send, log |
40 |
|
41 |
_logger = log.get_logger("synnefo.dispatcher")
|
42 |
|
43 |
def update_db(message): |
44 |
"""Process the status of a VM based on a ganeti status message"""
|
45 |
_logger.debug("Processing ganeti-op-status msg: %s", message.body)
|
46 |
try:
|
47 |
msg = _parse_json(message.body) |
48 |
|
49 |
if msg["type"] != "ganeti-op-status": |
50 |
_logger.error("Message is of unknown type %s.", msg["type"]) |
51 |
return
|
52 |
|
53 |
if msg["operation"] == "OP_INSTANCE_QUERY_DATA": |
54 |
return status_job_finished(message)
|
55 |
|
56 |
vmid = utils.id_from_instance_name(msg["instance"])
|
57 |
vm = VirtualMachine.objects.get(id=vmid) |
58 |
|
59 |
backend.process_op_status(vm, msg["jobId"], msg["operation"], |
60 |
msg["status"], msg["logmsg"]) |
61 |
_logger.debug("Done processing ganeti-op-status msg for vm %s.",
|
62 |
msg["instance"])
|
63 |
message.channel.basic_ack(message.delivery_tag) |
64 |
except KeyError: |
65 |
_logger.error("Malformed incoming JSON, missing attributes: %s",
|
66 |
message.body) |
67 |
except VirtualMachine.InvalidBackendIdError:
|
68 |
_logger.debug("Ignoring msg for unknown instance %s.",
|
69 |
msg["instance"])
|
70 |
except VirtualMachine.DoesNotExist:
|
71 |
_logger.error("VM for instance %s with id %d not found in DB.",
|
72 |
msg["instance"], vmid)
|
73 |
except Exception as e: |
74 |
_logger.error("Unexpected error:\n%s" %
|
75 |
"".join(traceback.format_exception(*sys.exc_info())))
|
76 |
|
77 |
|
78 |
def update_net(message): |
79 |
"""Process a network status update notification from Ganeti"""
|
80 |
_logger.debug("Processing ganeti-net-status msg: %s", message.body)
|
81 |
try:
|
82 |
msg = _parse_json(message.body) |
83 |
|
84 |
if msg["type"] != "ganeti-net-status": |
85 |
_logger.error("Message is of unknown type %s", msg["type"]) |
86 |
return
|
87 |
|
88 |
vmid = utils.id_from_instance_name(msg["instance"])
|
89 |
vm = VirtualMachine.objects.get(id=vmid) |
90 |
|
91 |
backend.process_net_status(vm, msg["nics"])
|
92 |
_logger.debug("Done processing ganeti-net-status msg for vm %s.",
|
93 |
msg["instance"])
|
94 |
message.channel.basic_ack(message.delivery_tag) |
95 |
except KeyError: |
96 |
_logger.error("Malformed incoming JSON, missing attributes: %s",
|
97 |
message.body) |
98 |
except VirtualMachine.InvalidBackendIdError:
|
99 |
_logger.debug("Ignoring msg for unknown instance %s.",
|
100 |
msg["instance"])
|
101 |
except VirtualMachine.DoesNotExist:
|
102 |
_logger.error("VM for instance %s with id %d not found in DB.",
|
103 |
msg["instance"], vmid)
|
104 |
except Exception as e: |
105 |
_logger.error("Unexpected error:\n%s" %
|
106 |
"".join(traceback.format_exception(*sys.exc_info())))
|
107 |
|
108 |
|
109 |
def send_email(message): |
110 |
"""Process an email submission request"""
|
111 |
|
112 |
try:
|
113 |
msg = json.loads(message.body) |
114 |
|
115 |
sent = email_send.send(sender=msg['frm'], recipient = msg['to'], |
116 |
body=msg['body'], subject=msg['subject']) |
117 |
|
118 |
if not sent: |
119 |
_logger.warn("Failed to send email to %s", msg['to']) |
120 |
else:
|
121 |
message.channel.basic_ack(message.delivery_tag) |
122 |
except KeyError: |
123 |
_logger.error("Malformed incoming JSON, missing attributes: %s",
|
124 |
message.body) |
125 |
except socket.error as e: |
126 |
_logger.error("Cannot connect to SMTP server:%s\n", e)
|
127 |
except Exception as e: |
128 |
_logger.error("Unexpected error:%s\n", e)
|
129 |
raise
|
130 |
|
131 |
|
132 |
def update_credits(message): |
133 |
_logger.debug("Request to update credits")
|
134 |
message.channel.basic_ack(message.delivery_tag) |
135 |
|
136 |
def trigger_status_update(message): |
137 |
"""
|
138 |
Triggers a status update job for a specific VM id.
|
139 |
"""
|
140 |
_logger.debug("Request to trigger status update: %s", message.body)
|
141 |
|
142 |
try:
|
143 |
msg = _parse_json(message.body) |
144 |
|
145 |
if msg["type"] != "reconcile": |
146 |
_logger.error("Message is of unknown type %s", msg["type"]) |
147 |
return
|
148 |
|
149 |
if msg["vmid"] == "": |
150 |
_logger.error("Reconciliate message does not specify a VM id")
|
151 |
return
|
152 |
|
153 |
vm = VirtualMachine.objects.get(id=msg["vmid"])
|
154 |
backend.request_status_update(vm) |
155 |
|
156 |
message.channel.basic_ack(message.delivery_tag) |
157 |
except KeyError as k: |
158 |
_logger.error("Malformed incoming JSON, missing attributes: %s", k)
|
159 |
except Exception as e: |
160 |
_logger.error("Unexpected error:%s", e)
|
161 |
|
162 |
def status_job_finished (message): |
163 |
"""
|
164 |
Updates VM status based on a previously sent status update request
|
165 |
"""
|
166 |
try:
|
167 |
msg = _parse_json(message.body) |
168 |
|
169 |
if msg["operation"] != 'OP_INSTANCE_QUERY_DATA': |
170 |
_logger.error("Message is of unknown type %s", msg["operation"]) |
171 |
return
|
172 |
|
173 |
if msg["status"] != "success": |
174 |
_logger.warn("Ignoring non-success status update from job %d on VM %s",
|
175 |
msg['jobId'], msg['instance']) |
176 |
message.channel.basic_ack(message.delivery_tag) |
177 |
return
|
178 |
|
179 |
status = backend.get_job_status(msg['jobId'])
|
180 |
|
181 |
_logger.debug("Node status job result: %s" % status)
|
182 |
|
183 |
if status['summary'][0] != u'INSTANCE_QUERY_DATA': |
184 |
_logger.error("Status update is of unknown type %s", status['summary']) |
185 |
return
|
186 |
|
187 |
conf_state = status['opresult'][0][msg['instance']]['config_state'] |
188 |
run_state = status['opresult'][0][msg['instance']]['run_state'] |
189 |
|
190 |
# XXX: The following assumes names like snf-12
|
191 |
instid = msg['instance'].split('-')[1] |
192 |
|
193 |
vm = VirtualMachine.objects.get(id = instid) |
194 |
|
195 |
if run_state == "up": |
196 |
opcode = "OP_INSTANCE_REBOOT"
|
197 |
else:
|
198 |
opcode = "OP_INSTANCE_SHUTDOWN"
|
199 |
|
200 |
backend.process_op_status(vm=vm, jobid=msg['jobId'],opcode=opcode,
|
201 |
status="success",
|
202 |
logmsg="Reconciliation: simulated event")
|
203 |
|
204 |
message.channel.basic_ack(message.delivery_tag) |
205 |
except KeyError as k: |
206 |
_logger.error("Malformed incoming JSON, missing attributes: %s", k)
|
207 |
except Exception as e: |
208 |
_logger.error("Unexpected error:%s"%e)
|
209 |
|
210 |
def dummy_proc(message): |
211 |
try:
|
212 |
msg = _logger.debug(message.body) |
213 |
_logger.debug("Msg (exchange:%s) ", msg)
|
214 |
message.channel.basic_ack(message.delivery_tag) |
215 |
except Exception as e: |
216 |
_logger.error("Could not receive message %s" % e.message)
|
217 |
pass
|
218 |
|
219 |
def _parse_json(data): |
220 |
try:
|
221 |
return json.loads(data)
|
222 |
except Exception as e: |
223 |
_logger.error("Could not parse JSON file: %s", e)
|
224 |
raise
|