Mercurial > libervia-pubsub
annotate idavoll/memory_storage.py @ 173:246911bcb699
Make node type part of node configuration.
| author | Ralph Meijer <ralphm@ik.nu> |
|---|---|
| date | Wed, 09 Apr 2008 11:43:16 +0000 |
| parents | bc269696ef42 |
| children | 42e23a62b57f |
| rev | line source |
|---|---|
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1 # Copyright (c) 2003-2008 Ralph Meijer |
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2 # See LICENSE for details. |
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3 |
| 107 | 4 import copy |
| 5 from zope.interface import implements | |
| 6 from twisted.internet import defer | |
| 7 from twisted.words.protocols.jabber import jid | |
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8 |
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9 from idavoll import error, iidavoll |
| 107 | 10 |
| 115 | 11 default_config = {"pubsub#persist_items": True, |
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12 "pubsub#deliver_payloads": True, |
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13 "pubsub#node_type": "leaf"} |
| 107 | 14 |
| 15 class Storage: | |
| 16 | |
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17 implements(iidavoll.IStorage) |
| 107 | 18 |
| 19 def __init__(self): | |
| 20 self._nodes = {} | |
| 21 | |
| 22 def get_node(self, node_id): | |
| 23 try: | |
| 24 node = self._nodes[node_id] | |
| 25 except KeyError: | |
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26 return defer.fail(error.NodeNotFound()) |
| 107 | 27 |
| 28 return defer.succeed(node) | |
| 29 | |
| 30 def get_node_ids(self): | |
| 31 return defer.succeed(self._nodes.keys()) | |
| 32 | |
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33 def create_node(self, node_id, owner, config=None): |
| 107 | 34 if node_id in self._nodes: |
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35 return defer.fail(error.NodeExists()) |
| 107 | 36 |
| 37 if not config: | |
| 38 config = copy.copy(default_config) | |
| 39 | |
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40 if config['pubsub#node_type'] != 'leaf': |
| 107 | 41 raise NotImplementedError |
| 42 | |
| 43 node = LeafNode(node_id, owner, config) | |
| 44 self._nodes[node_id] = node | |
| 45 | |
| 46 return defer.succeed(None) | |
| 47 | |
| 48 def delete_node(self, node_id): | |
| 49 try: | |
| 50 del self._nodes[node_id] | |
| 51 except KeyError: | |
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52 return defer.fail(error.NodeNotFound()) |
| 107 | 53 |
| 54 return defer.succeed(None) | |
| 55 | |
| 56 def get_affiliations(self, entity): | |
| 112 | 57 entity = entity.userhost() |
| 58 return defer.succeed([(node.id, node._affiliations[entity]) | |
| 107 | 59 for name, node in self._nodes.iteritems() |
| 112 | 60 if entity in node._affiliations]) |
| 107 | 61 |
| 62 def get_subscriptions(self, entity): | |
| 63 subscriptions = [] | |
| 64 for node in self._nodes.itervalues(): | |
| 65 for subscriber, subscription in node._subscriptions.iteritems(): | |
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66 subscriber = jid.internJID(subscriber) |
| 112 | 67 if subscriber.userhostJID() == entity.userhostJID(): |
| 107 | 68 subscriptions.append((node.id, subscriber, |
| 69 subscription.state)) | |
| 70 | |
| 71 return defer.succeed(subscriptions) | |
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72 |
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73 |
| 107 | 74 class Node: |
| 75 | |
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76 implements(iidavoll.INode) |
| 107 | 77 |
| 78 def __init__(self, node_id, owner, config): | |
| 79 self.id = node_id | |
| 112 | 80 self._affiliations = {owner.userhost(): 'owner'} |
| 107 | 81 self._subscriptions = {} |
| 82 self._config = config | |
| 83 | |
| 84 def get_type(self): | |
| 85 return self.type | |
| 86 | |
| 87 def get_configuration(self): | |
| 88 return self._config | |
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89 |
| 107 | 90 def get_meta_data(self): |
| 91 config = copy.copy(self._config) | |
| 92 config["pubsub#node_type"] = self.type | |
| 93 return config | |
| 94 | |
| 95 def set_configuration(self, options): | |
| 96 for option in options: | |
| 97 if option in self._config: | |
| 98 self._config[option] = options[option] | |
| 99 | |
| 100 return defer.succeed(None) | |
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101 |
| 107 | 102 def get_affiliation(self, entity): |
| 103 return defer.succeed(self._affiliations.get(entity.full())) | |
| 104 | |
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105 def get_subscription(self, subscriber): |
| 107 | 106 try: |
| 107 subscription = self._subscriptions[subscriber.full()] | |
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108 except KeyError: |
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109 state = None |
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110 else: |
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111 state = subscription.state |
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112 return defer.succeed(state) |
| 107 | 113 |
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114 def add_subscription(self, subscriber, state): |
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115 if self._subscriptions.get(subscriber.full()): |
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116 return defer.fail(error.SubscriptionExists()) |
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117 |
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118 subscription = Subscription(state) |
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119 self._subscriptions[subscriber.full()] = subscription |
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120 return defer.succeed(None) |
| 107 | 121 |
| 122 def remove_subscription(self, subscriber): | |
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123 try: |
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124 del self._subscriptions[subscriber.full()] |
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125 except KeyError: |
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126 return defer.fail(error.NotSubscribed()) |
| 107 | 127 |
| 128 return defer.succeed(None) | |
| 129 | |
| 130 def get_subscribers(self): | |
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131 subscribers = [jid.internJID(subscriber) for subscriber, subscription |
| 107 | 132 in self._subscriptions.iteritems() |
| 133 if subscription.state == 'subscribed'] | |
| 134 | |
| 135 return defer.succeed(subscribers) | |
| 136 | |
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137 def is_subscribed(self, entity): |
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138 for subscriber, subscription in self._subscriptions.iteritems(): |
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139 if jid.internJID(subscriber).userhost() == entity.userhost() and \ |
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140 subscription.state == 'subscribed': |
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141 return defer.succeed(True) |
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142 |
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143 return defer.succeed(False) |
| 107 | 144 |
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145 def get_affiliations(self): |
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146 affiliations = [(jid.internJID(entity), affiliation) for entity, affiliation |
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147 in self._affiliations.iteritems()] |
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148 |
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149 return defer.succeed(affiliations) |
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150 |
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151 |
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152 class LeafNodeMixin: |
| 107 | 153 |
| 154 type = 'leaf' | |
| 155 | |
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156 def __init__(self): |
| 107 | 157 self._items = {} |
| 158 self._itemlist = [] | |
| 159 | |
| 160 def store_items(self, items, publisher): | |
| 161 for data in items: | |
| 162 id = data["id"] | |
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163 data = data.toXml() |
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164 if isinstance(data, str): |
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165 data = data.decode('utf-8') |
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166 item = (data, publisher) |
| 107 | 167 if id in self._items: |
| 168 self._itemlist.remove(self._items[id]) | |
| 169 self._items[id] = item | |
| 170 self._itemlist.append(item) | |
| 171 | |
| 172 return defer.succeed(None) | |
| 173 | |
| 174 def remove_items(self, item_ids): | |
| 175 deleted = [] | |
| 176 | |
| 177 for item_id in item_ids: | |
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178 try: |
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179 item = self._items[item_id] |
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180 except KeyError: |
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181 pass |
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182 else: |
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183 self._itemlist.remove(item) |
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184 del self._items[item_id] |
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185 deleted.append(item_id) |
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186 |
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187 return defer.succeed(deleted) |
| 107 | 188 |
| 189 def get_items(self, max_items=None): | |
| 190 if max_items: | |
| 191 list = self._itemlist[-max_items:] | |
| 192 else: | |
| 193 list = self._itemlist | |
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194 return defer.succeed([item[0] for item in list]) |
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195 |
| 107 | 196 def get_items_by_id(self, item_ids): |
| 197 items = [] | |
| 198 for item_id in item_ids: | |
| 199 try: | |
| 200 item = self._items[item_id] | |
| 201 except KeyError: | |
| 202 pass | |
| 203 else: | |
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204 items.append(item[0]) |
| 107 | 205 return defer.succeed(items) |
| 206 | |
| 207 def purge(self): | |
| 208 self._items = {} | |
| 209 self._itemlist = [] | |
| 210 | |
| 211 return defer.succeed(None) | |
| 212 | |
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213 |
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214 class LeafNode(Node, LeafNodeMixin): |
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215 |
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216 implements(iidavoll.ILeafNode) |
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217 |
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218 def __init__(self, node_id, owner, config): |
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219 Node.__init__(self, node_id, owner, config) |
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220 LeafNodeMixin.__init__(self) |
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221 |
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222 |
| 107 | 223 class Subscription: |
| 224 | |
| 225 def __init__(self, state): | |
| 226 self.state = state |