root / snf-common / synnefo / lib / queue.py @ 1c65202f
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1 | 8acb1f97 | Kostas Papadimitriou | # Copyright 2012 GRNET S.A. All rights reserved.
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2 | 8acb1f97 | Kostas Papadimitriou | #
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3 | 8acb1f97 | Kostas Papadimitriou | # Redistribution and use in source and binary forms, with or
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4 | 8acb1f97 | Kostas Papadimitriou | # without modification, are permitted provided that the following
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5 | 8acb1f97 | Kostas Papadimitriou | # conditions are met:
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6 | 8acb1f97 | Kostas Papadimitriou | #
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7 | 8acb1f97 | Kostas Papadimitriou | # 1. Redistributions of source code must retain the above
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8 | 8acb1f97 | Kostas Papadimitriou | # copyright notice, this list of conditions and the following
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9 | 8acb1f97 | Kostas Papadimitriou | # disclaimer.
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10 | 8acb1f97 | Kostas Papadimitriou | #
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11 | 8acb1f97 | Kostas Papadimitriou | # 2. Redistributions in binary form must reproduce the above
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12 | 8acb1f97 | Kostas Papadimitriou | # copyright notice, this list of conditions and the following
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13 | 8acb1f97 | Kostas Papadimitriou | # disclaimer in the documentation and/or other materials
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14 | 8acb1f97 | Kostas Papadimitriou | # provided with the distribution.
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15 | 8acb1f97 | Kostas Papadimitriou | #
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16 | 8acb1f97 | Kostas Papadimitriou | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 8acb1f97 | Kostas Papadimitriou | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 8acb1f97 | Kostas Papadimitriou | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 8acb1f97 | Kostas Papadimitriou | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 8acb1f97 | Kostas Papadimitriou | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 8acb1f97 | Kostas Papadimitriou | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 8acb1f97 | Kostas Papadimitriou | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 8acb1f97 | Kostas Papadimitriou | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 8acb1f97 | Kostas Papadimitriou | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 8acb1f97 | Kostas Papadimitriou | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 8acb1f97 | Kostas Papadimitriou | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 8acb1f97 | Kostas Papadimitriou | # POSSIBILITY OF SUCH DAMAGE.
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28 | 8acb1f97 | Kostas Papadimitriou | #
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29 | 8acb1f97 | Kostas Papadimitriou | # The views and conclusions contained in the software and
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30 | 8acb1f97 | Kostas Papadimitriou | # documentation are those of the authors and should not be
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31 | 8acb1f97 | Kostas Papadimitriou | # interpreted as representing official policies, either expressed
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32 | 8acb1f97 | Kostas Papadimitriou | # or implied, of GRNET S.A.
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33 | 8acb1f97 | Kostas Papadimitriou | |
34 | 8acb1f97 | Kostas Papadimitriou | import pika |
35 | 8acb1f97 | Kostas Papadimitriou | import json |
36 | 8acb1f97 | Kostas Papadimitriou | import uuid |
37 | 8acb1f97 | Kostas Papadimitriou | |
38 | 8acb1f97 | Kostas Papadimitriou | from urlparse import urlparse |
39 | 8acb1f97 | Kostas Papadimitriou | from hashlib import sha1 |
40 | 8acb1f97 | Kostas Papadimitriou | from random import random |
41 | 8acb1f97 | Kostas Papadimitriou | from time import time |
42 | 8acb1f97 | Kostas Papadimitriou | |
43 | 8acb1f97 | Kostas Papadimitriou | |
44 | 8acb1f97 | Kostas Papadimitriou | def exchange_connect(exchange, vhost='/'): |
45 | 8acb1f97 | Kostas Papadimitriou | """Format exchange as a URI: rabbitmq://user:pass@host:port/exchange"""
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46 | 8acb1f97 | Kostas Papadimitriou | parts = urlparse(exchange) |
47 | 8acb1f97 | Kostas Papadimitriou | if parts.scheme != 'rabbitmq': |
48 | 8acb1f97 | Kostas Papadimitriou | return None |
49 | 8acb1f97 | Kostas Papadimitriou | if len(parts.path) < 2 or not parts.path.startswith('/'): |
50 | 8acb1f97 | Kostas Papadimitriou | return None |
51 | 8acb1f97 | Kostas Papadimitriou | exchange = parts.path[1:]
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52 | 8acb1f97 | Kostas Papadimitriou | connection = pika.BlockingConnection(pika.ConnectionParameters( |
53 | 8acb1f97 | Kostas Papadimitriou | host=parts.hostname, port=parts.port, virtual_host=vhost, |
54 | 8acb1f97 | Kostas Papadimitriou | credentials=pika.PlainCredentials(parts.username, parts.password))) |
55 | 8acb1f97 | Kostas Papadimitriou | channel = connection.channel() |
56 | 8acb1f97 | Kostas Papadimitriou | channel.exchange_declare(exchange=exchange, type='topic', durable=True) |
57 | 8acb1f97 | Kostas Papadimitriou | return (connection, channel, exchange)
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58 | 8acb1f97 | Kostas Papadimitriou | |
59 | 8acb1f97 | Kostas Papadimitriou | def exchange_close(conn): |
60 | 8acb1f97 | Kostas Papadimitriou | connection, channel, exchange = conn |
61 | 8acb1f97 | Kostas Papadimitriou | connection.close() |
62 | 8acb1f97 | Kostas Papadimitriou | |
63 | 8acb1f97 | Kostas Papadimitriou | def exchange_send(conn, key, value): |
64 | 8acb1f97 | Kostas Papadimitriou | """Messages are sent to exchanges at a key."""
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65 | 8acb1f97 | Kostas Papadimitriou | connection, channel, exchange = conn |
66 | 8acb1f97 | Kostas Papadimitriou | channel.basic_publish(exchange=exchange, |
67 | 8acb1f97 | Kostas Papadimitriou | routing_key=key, |
68 | 8acb1f97 | Kostas Papadimitriou | body=json.dumps(value)) |
69 | 8acb1f97 | Kostas Papadimitriou | |
70 | 8acb1f97 | Kostas Papadimitriou | |
71 | 8acb1f97 | Kostas Papadimitriou | def exchange_route(conn, key, queue): |
72 | 8acb1f97 | Kostas Papadimitriou | """Set up routing of keys to queue."""
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73 | 8acb1f97 | Kostas Papadimitriou | connection, channel, exchange = conn |
74 | 8acb1f97 | Kostas Papadimitriou | channel.queue_declare(queue=queue, durable=True,
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75 | 8acb1f97 | Kostas Papadimitriou | exclusive=False, auto_delete=False) |
76 | 8acb1f97 | Kostas Papadimitriou | channel.queue_bind(exchange=exchange, |
77 | 8acb1f97 | Kostas Papadimitriou | queue=queue, |
78 | 8acb1f97 | Kostas Papadimitriou | routing_key=key) |
79 | 8acb1f97 | Kostas Papadimitriou | |
80 | 8acb1f97 | Kostas Papadimitriou | def queue_callback(conn, queue, cb): |
81 | 8acb1f97 | Kostas Papadimitriou | |
82 | 8acb1f97 | Kostas Papadimitriou | def handle_delivery(channel, method_frame, header_frame, body): |
83 | 8acb1f97 | Kostas Papadimitriou | #print 'Basic.Deliver %s delivery-tag %i: %s' % (header_frame.content_type,
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84 | 8acb1f97 | Kostas Papadimitriou | # method_frame.delivery_tag,
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85 | 8acb1f97 | Kostas Papadimitriou | # body)
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86 | 8acb1f97 | Kostas Papadimitriou | if cb:
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87 | 8acb1f97 | Kostas Papadimitriou | cb(json.loads(body)) |
88 | 8acb1f97 | Kostas Papadimitriou | channel.basic_ack(delivery_tag=method_frame.delivery_tag) |
89 | 8acb1f97 | Kostas Papadimitriou | |
90 | 8acb1f97 | Kostas Papadimitriou | connection, channel, exchange = conn |
91 | 8acb1f97 | Kostas Papadimitriou | channel.basic_consume(handle_delivery, queue=queue) |
92 | 8acb1f97 | Kostas Papadimitriou | |
93 | 8acb1f97 | Kostas Papadimitriou | def queue_start(conn): |
94 | 8acb1f97 | Kostas Papadimitriou | connection, channel, exchange = conn |
95 | 8acb1f97 | Kostas Papadimitriou | channel.start_consuming() |
96 | 8acb1f97 | Kostas Papadimitriou | |
97 | 8acb1f97 | Kostas Papadimitriou | class Receipt(object): |
98 | 21a69d65 | Antony Chazapis | def __init__(self, client, user, instance, resource, value, details={}): |
99 | 8acb1f97 | Kostas Papadimitriou | self.eventVersion = '1.0' |
100 | 8acb1f97 | Kostas Papadimitriou | self.occurredMillis = int(time() * 1000) |
101 | 8acb1f97 | Kostas Papadimitriou | self.receivedMillis = self.occurredMillis |
102 | 8acb1f97 | Kostas Papadimitriou | self.clientID = client
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103 | 8acb1f97 | Kostas Papadimitriou | self.userID = user
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104 | 21a69d65 | Antony Chazapis | self.instanceID = instance
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105 | 8acb1f97 | Kostas Papadimitriou | self.resource = resource
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106 | 8acb1f97 | Kostas Papadimitriou | self.value = value
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107 | 8acb1f97 | Kostas Papadimitriou | self.details = details
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108 | 8acb1f97 | Kostas Papadimitriou | hash = sha1() |
109 | 8acb1f97 | Kostas Papadimitriou | hash.update(json.dumps([client, user, resource, value, details, random()]))
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110 | 8acb1f97 | Kostas Papadimitriou | self.id = hash.hexdigest() |
111 | 8acb1f97 | Kostas Papadimitriou | |
112 | 8acb1f97 | Kostas Papadimitriou | def format(self): |
113 | 8acb1f97 | Kostas Papadimitriou | return self.__dict__ |
114 | ecdf098e | Sofia Papagiannaki | |
115 | ecdf098e | Sofia Papagiannaki | class UserEvent(object): |
116 | ecdf098e | Sofia Papagiannaki | def __init__(self, client, user, is_active, eventType, details=None): |
117 | ecdf098e | Sofia Papagiannaki | self.eventVersion = '1' |
118 | ecdf098e | Sofia Papagiannaki | self.occurredMillis = int(time() * 1000) |
119 | ecdf098e | Sofia Papagiannaki | self.receivedMillis = self.occurredMillis |
120 | ecdf098e | Sofia Papagiannaki | self.clientID = client
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121 | ecdf098e | Sofia Papagiannaki | self.userID = user
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122 | ecdf098e | Sofia Papagiannaki | self.isActive = is_active
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123 | ecdf098e | Sofia Papagiannaki | self.role = 'default' |
124 | ecdf098e | Sofia Papagiannaki | self.eventType = eventType
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125 | ecdf098e | Sofia Papagiannaki | self.details = details or {} |
126 | ecdf098e | Sofia Papagiannaki | hash = sha1() |
127 | ecdf098e | Sofia Papagiannaki | hash.update(json.dumps([client,
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128 | ecdf098e | Sofia Papagiannaki | self.userID,
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129 | ecdf098e | Sofia Papagiannaki | self.isActive,
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130 | ecdf098e | Sofia Papagiannaki | self.role,
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131 | ecdf098e | Sofia Papagiannaki | self.eventType,
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132 | ecdf098e | Sofia Papagiannaki | self.details,
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133 | ecdf098e | Sofia Papagiannaki | self.occurredMillis
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134 | ecdf098e | Sofia Papagiannaki | ] |
135 | ecdf098e | Sofia Papagiannaki | ) |
136 | ecdf098e | Sofia Papagiannaki | ) |
137 | ecdf098e | Sofia Papagiannaki | self.id = hash.hexdigest() |
138 | ecdf098e | Sofia Papagiannaki | |
139 | ecdf098e | Sofia Papagiannaki | def format(self): |
140 | ecdf098e | Sofia Papagiannaki | return self.__dict__ |