Mercurial > libervia-pubsub

annotate idavoll/memory_backend.py @ 108:1c18759d2afb

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Moved two errors to storage.py. Moved generic backend implementation to generic_backend.py. Added two configuration errors.
author Ralph Meijer <ralphm@ik.nu>
date Fri, 08 Apr 2005 10:16:08 +0000
parents 8d8946e67fcb
children
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1 from twisted.application import service
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2 from twisted.internet import defer
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3 from twisted.words.protocols.jabber import jid
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4 import backend
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5
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6 class Subscription:
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7 def __init__(self, state):
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8 self.state = state
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9
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10 class NodeConfiguration:
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11 def __init__(self):
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12 self.persist_items = False
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13 self.deliver_payloads = False
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14
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15 class Node:
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16 def __init__(self, id):
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17 self.id = id
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18 self.configuration = NodeConfiguration()
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19 self.subscriptions = {}
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20 self.affiliations = {}
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21 self.items = {}
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22
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23 class Storage:
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24 def __init__(self):
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25 self.nodes = {}
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26
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27 def get_node_configuration(self, node_id):
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28 try:
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29 node = self.nodes[node_id]
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30 except KeyError:
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31 raise backend.NodeNotFound
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32 else:
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33 c = self.nodes[node_id].configuration
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34 return defer.succeed({'pubsub#persist_items': c.persist_items,
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35 'pubsub#deliver_payloads': c.deliver_payloads})
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36
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37 def get_affiliation(self, node_id, entity):
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38 try:
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39 node = self.nodes[node_id]
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40 except KeyError:
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41 raise backend.NodeNotFound
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42 else:
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43 return defer.succeed(node.affiliations.get(entity.full(), None))
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44
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45 def get_subscribers(self, node_id):
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46 try:
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47 node = self.nodes[node_id]
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48 except KeyError:
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49 raise backend.NodeNotFound
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50 else:
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51 subscriptions = self.nodes[node_id].subscriptions
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52 subscribers = [jid.JID(s) for s in subscriptions
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53 if subscriptions[s].state == 'subscribed']
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54 return defer.succeed(subscribers)
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55
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56 def store_items(self, node_id, items, publisher):
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57 for item in items:
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58 self.nodes[node_id].items[item["id"]] = (item, publisher)
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59 return defer.succeed(None)
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60
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61 def add_subscription(self, node_id, subscriber, state):
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62 try:
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63 node = self.nodes[node_id]
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64 except KeyError:
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65 raise backend.NodeNotFound
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67 try:
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68 subscription = node.subscriptions[subscriber.full()]
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69 except:
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70 subscription = Subscription(state)
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71 node.subscriptions[subscriber.full()] = subscription
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72
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73 return defer.succeed({'node': node_id,
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74 'jid': subscriber,
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75 'subscription': subscription.state})
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76
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77 def remove_subscription(self, node_id, subscriber):
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78 try:
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79 node = self.nodes[node_id]
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80 except KeyError:
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81 raise backend.NodeNotFound
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82
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83 try:
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84 del node.subscriptions[subscriber.full()]
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85 except KeyError:
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86 raise backend.NotSubscribed
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87
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88 return defer.succeed(None)
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89
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90 def create_node(self, node_id, owner):
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91 if node_id in self.nodes:
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92 raise backend.NodeExists
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93
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94 node = Node(node_id)
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95 node.affiliations[owner.full()] = 'owner'
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96 self.nodes[node_id] = node
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97
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98 return defer.succeed(None)
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99
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100 def get_affiliations(self, entity):
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101 affiliations = []
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102 for node in self.nodes.itervalues():
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103 if entity.full() in node.affiliations:
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104 affiliations.append((node.id,
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105 node.affiliations[entity.full()]))
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106
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107 return defer.succeed(affiliations)
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108
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109 def get_subscriptions(self, entity):
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110 subscriptions = []
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111 for node in self.nodes.itervalues():
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112 for subscriber, subscription in node.subscriptions.iteritems():
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113 subscriber_jid = jid.JID(subscriber)
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114 if subscriber_jid.userhostJID() == entity:
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115 subscriptions.append((node.id, subscriber_jid,
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116 subscription.state))
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117 return defer.succeed(subscriptions)
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118
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119 def get_node_type(self, node_id):
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120 if node_id not in self.nodes:
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121 raise backend.NodeNotFound
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122
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123 return defer.succeed('leaf')
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124
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125 def get_nodes(self):
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126 return defer.succeed(self.nodes.keys())
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127
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128 class BackendService(backend.BackendService):
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129 pass
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130
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131 class NodeCreationService(backend.NodeCreationService):
62fdb37234e5 Make NodeCreationService a subclass of backend.NodeCreationService.
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parents: 50
diff changeset
132 pass
30
ff7c73b253bf Recode backend to match interaces: one big Service that handles everything
Ralph Meijer <ralphm@ik.nu>
parents: 27
diff changeset
133
46
979e53b54267 Redefined several classes as subclasses of the implementations in backend.py.
Ralph Meijer <ralphm@ik.nu>
parents: 43
diff changeset
134 class PublishService(backend.PublishService):
979e53b54267 Redefined several classes as subclasses of the implementations in backend.py.
Ralph Meijer <ralphm@ik.nu>
parents: 43
diff changeset
135 pass
27
e6d62c93cd0a Initial revision
Ralph Meijer <ralphm@ik.nu>
parents:
diff changeset
136
30
ff7c73b253bf Recode backend to match interaces: one big Service that handles everything
Ralph Meijer <ralphm@ik.nu>
parents: 27
diff changeset
137 class NotificationService(backend.NotificationService):
46
979e53b54267 Redefined several classes as subclasses of the implementations in backend.py.
Ralph Meijer <ralphm@ik.nu>
parents: 43
diff changeset
138 pass
30
ff7c73b253bf Recode backend to match interaces: one big Service that handles everything
Ralph Meijer <ralphm@ik.nu>
parents: 27
diff changeset
139
50
64f0986d8b35 Implement add_subscription() and remove_subscription() for Storage, remove
Ralph Meijer <ralphm@ik.nu>
parents: 46
diff changeset
140 class SubscriptionService(backend.SubscriptionService):
64f0986d8b35 Implement add_subscription() and remove_subscription() for Storage, remove
Ralph Meijer <ralphm@ik.nu>
parents: 46
diff changeset
141 pass
74
0e642e5b4fb2 Add get_affiliations(), get_subscriptions(), get_node_type() and get_nodes()
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
142
0e642e5b4fb2 Add get_affiliations(), get_subscriptions(), get_node_type() and get_nodes()
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
143 class AffiliationsService(backend.AffiliationsService):
0e642e5b4fb2 Add get_affiliations(), get_subscriptions(), get_node_type() and get_nodes()
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
144 pass