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annotate venv/lib/python2.7/site-packages/boto/mturk/notification.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 # Copyright (c) 2006,2007 Mitch Garnaat http://garnaat.org/
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2 #
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3 # Permission is hereby granted, free of charge, to any person obtaining a
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4 # copy of this software and associated documentation files (the
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5 # "Software"), to deal in the Software without restriction, including
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6 # without limitation the rights to use, copy, modify, merge, publish, dis-
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7 # tribute, sublicense, and/or sell copies of the Software, and to permit
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8 # persons to whom the Software is furnished to do so, subject to the fol-
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9 # lowing conditions:
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10 #
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11 # The above copyright notice and this permission notice shall be included
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12 # in all copies or substantial portions of the Software.
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13 #
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14 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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15 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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16 # ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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17 # SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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18 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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20 # IN THE SOFTWARE.
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21
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22 """
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23 Provides NotificationMessage and Event classes, with utility methods, for
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24 implementations of the Mechanical Turk Notification API.
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25 """
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26
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27 import hmac
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28 try:
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29 from hashlib import sha1 as sha
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30 except ImportError:
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31 import sha
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32 import base64
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33 import re
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34
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35 class NotificationMessage(object):
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36
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37 NOTIFICATION_WSDL = "http://mechanicalturk.amazonaws.com/AWSMechanicalTurk/2006-05-05/AWSMechanicalTurkRequesterNotification.wsdl"
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38 NOTIFICATION_VERSION = '2006-05-05'
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39
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40 SERVICE_NAME = "AWSMechanicalTurkRequesterNotification"
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41 OPERATION_NAME = "Notify"
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42
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43 EVENT_PATTERN = r"Event\.(?P<n>\d+)\.(?P<param>\w+)"
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44 EVENT_RE = re.compile(EVENT_PATTERN)
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45
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46 def __init__(self, d):
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47 """
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48 Constructor; expects parameter d to be a dict of string parameters from a REST transport notification message
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49 """
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50 self.signature = d['Signature'] # vH6ZbE0NhkF/hfNyxz2OgmzXYKs=
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51 self.timestamp = d['Timestamp'] # 2006-05-23T23:22:30Z
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52 self.version = d['Version'] # 2006-05-05
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53 assert d['method'] == NotificationMessage.OPERATION_NAME, "Method should be '%s'" % NotificationMessage.OPERATION_NAME
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54
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55 # Build Events
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56 self.events = []
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57 events_dict = {}
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58 if 'Event' in d:
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59 # TurboGears surprised me by 'doing the right thing' and making { 'Event': { '1': { 'EventType': ... } } } etc.
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60 events_dict = d['Event']
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61 else:
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62 for k in d:
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63 v = d[k]
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64 if k.startswith('Event.'):
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65 ed = NotificationMessage.EVENT_RE.search(k).groupdict()
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66 n = int(ed['n'])
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67 param = str(ed['param'])
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68 if n not in events_dict:
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69 events_dict[n] = {}
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70 events_dict[n][param] = v
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71 for n in events_dict:
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72 self.events.append(Event(events_dict[n]))
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73
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74 def verify(self, secret_key):
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75 """
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76 Verifies the authenticity of a notification message.
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77
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78 TODO: This is doing a form of authentication and
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79 this functionality should really be merged
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80 with the pluggable authentication mechanism
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81 at some point.
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82 """
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83 verification_input = NotificationMessage.SERVICE_NAME
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84 verification_input += NotificationMessage.OPERATION_NAME
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85 verification_input += self.timestamp
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86 h = hmac.new(key=secret_key, digestmod=sha)
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87 h.update(verification_input)
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88 signature_calc = base64.b64encode(h.digest())
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89 return self.signature == signature_calc
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90
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91 class Event(object):
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92 def __init__(self, d):
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93 self.event_type = d['EventType']
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94 self.event_time_str = d['EventTime']
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95 self.hit_type = d['HITTypeId']
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96 self.hit_id = d['HITId']
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97 if 'AssignmentId' in d: # Not present in all event types
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98 self.assignment_id = d['AssignmentId']
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99
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100 #TODO: build self.event_time datetime from string self.event_time_str
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101
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102 def __repr__(self):
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103 return "<boto.mturk.notification.Event: %s for HIT # %s>" % (self.event_type, self.hit_id)