Mercurial > libervia-pubsub
annotate idavoll/storage.py @ 120:8892331314c8
Change Node.add_subscription() to return a Failure when a subscription already
exists or return nothing on success.
Added get_subscription().
Return Failure from Node.remove_subscription() when subscription does not
exist.
| author | Ralph Meijer <ralphm@ik.nu> |
|---|---|
| date | Tue, 12 Apr 2005 12:20:01 +0000 |
| parents | 3e7a7426f518 |
| children | 0d7b95fb2549 |
| rev | line source |
|---|---|
| 107 | 1 from zope.interface import Interface |
| 111 | 2 from twisted.words.protocols.jabber import jid |
| 107 | 3 |
| 4 class Error(Exception): | |
| 5 msg = None | |
| 6 | |
| 7 class NodeNotFound(Error): | |
| 8 pass | |
| 9 | |
| 10 class NodeExists(Error): | |
| 11 pass | |
| 12 | |
|
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13 class SubscriptionNotFound(Error): |
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14 pass |
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15 |
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16 class SubscriptionExists(Error): |
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17 pass |
| 107 | 18 |
| 19 class IStorage(Interface): | |
| 111 | 20 """ Storage interface """ |
| 107 | 21 |
| 22 def get_node(self, node_id): | |
| 111 | 23 """ Get Node. |
| 24 | |
| 25 @param node_id: NodeID of the desired node. | |
| 26 @type node_id: L{str} | |
| 27 @return: deferred that returns a L{Node} object. | |
| 28 """ | |
| 107 | 29 |
| 30 def get_node_ids(self): | |
| 111 | 31 """ Return all NodeIDs. |
| 32 | |
| 33 @return: deferred that returns a list of NodeIDs (L{str}). | |
| 34 """ | |
| 107 | 35 |
| 36 def create_node(self, node_id, owner, config = None, type='leaf'): | |
| 111 | 37 """ Create new node. |
| 38 | |
| 39 The implementation should make sure, the passed owner JID is stripped | |
| 40 of the resource (e.g. using C{owner.userhostJID()}). | |
| 41 | |
| 42 @param node_id: NodeID of the new node. | |
| 43 @type node_id: L{str} | |
| 44 @param owner: JID of the new nodes's owner. | |
| 45 @type owner: L{jid.JID} | |
| 46 @param config: Configuration | |
| 47 @param type: Node type. Can be either C{'leaf'} or C{'collection'}. | |
| 48 @return: deferred that fires on creation. | |
| 49 """ | |
| 107 | 50 |
| 51 def delete_node(self, node_id): | |
| 111 | 52 """ Delete a node. |
| 53 | |
| 54 @param node_id: NodeID of the new node. | |
| 55 @type node_id: L{str} | |
| 56 @return: deferred that fires on deletion. | |
| 57 """ | |
| 107 | 58 |
| 59 def get_affiliations(self, entity): | |
| 111 | 60 """ Get all affiliations for entity. |
| 61 | |
| 62 The implementation should make sure, the passed owner JID is stripped | |
| 63 of the resource (e.g. using C{owner.userhostJID()}). | |
| 64 | |
| 65 @param entity: JID of the entity. | |
| 66 @type entity: L{jid.JID} | |
| 67 @return: deferred that returns a L{list} of tuples of the form | |
| 68 C{(node_id, affiliation)}, where C{node_id} is of the type | |
| 69 L{str} and C{affiliation} is one of C{'owner'}, C{'publisher'} | |
| 70 and C{'outcast'}. | |
| 71 """ | |
| 107 | 72 |
| 73 def get_subscriptions(self, entity): | |
| 111 | 74 """ Get all subscriptions for an entity. |
| 75 | |
| 76 The implementation should make sure, the passed owner JID is stripped | |
| 77 of the resource (e.g. using C{owner.userhostJID()}). | |
| 78 | |
| 79 @param entity: JID of the entity. | |
| 80 @type entity: L{jid.JID} | |
| 81 @return: deferred that returns a L{list} of tuples of the form | |
| 82 C{(node_id, subscriber, state)}, where C{node_id} is of the | |
| 83 type L{str}, C{subscriber} of the type {jid.JID}, and | |
| 84 C{state} is C{'subscribed'} or C{'pending'}. | |
| 85 """ | |
| 107 | 86 |
| 87 | |
| 88 class INode(Interface): | |
| 89 """ """ | |
| 90 def get_type(self): | |
| 116 | 91 """ Get node's type. |
| 92 | |
| 93 @return: C{'leaf'} or C{'collection'}. | |
| 94 """ | |
| 107 | 95 |
| 96 def get_configuration(self): | |
| 116 | 97 """ Get node's configuration. |
| 98 | |
| 99 The configuration must at least have two options: | |
| 100 C{pubsub#persist_items}, and C{pubsub#deliver_payloads}. | |
| 101 | |
| 102 @return: L{dict} of configuration options. | |
| 103 """ | |
| 107 | 104 |
| 105 def get_meta_data(self): | |
| 116 | 106 """ Get node's meta data. |
| 107 | |
| 108 The meta data must be a superset of the configuration options, and | |
| 109 also at least should have a C{pubsub#node_type} entry. | |
| 110 | |
| 111 @return: L{dict} of meta data. | |
| 112 """ | |
| 107 | 113 |
| 114 def set_configuration(self, options): | |
| 115 """ """ | |
| 116 | |
| 117 def get_affiliation(self, entity): | |
|
119
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118 """ Get affiliation of entity with this node. |
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119 |
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120 @param entity: JID of entity. |
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121 @type entity: L{jid.JID} |
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122 @return: deferred that returns C{'owner'}, C{'publisher'}, C{'outcast'} |
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123 or C{None}. |
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124 """ |
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125 |
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126 def get_subscription(self, subscriber): |
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127 """ Get subscription to this node of subscriber. |
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128 |
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129 @param subscriber: JID of the new subscriptions' entity. |
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130 @type subscriber: L{jid.JID} |
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131 @return: deferred that returns the subscription state (C{'subscribed'}, |
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132 C{'pending'} or C{None}). |
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133 """ |
| 107 | 134 |
| 135 def add_subscription(self, subscriber, state): | |
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136 """ Add new subscription to this node with given state. |
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137 |
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138 @param subscriber: JID of the new subscriptions' entity. |
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139 @type subscriber: L{jid.JID} |
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140 @param state: C{'subscribed'} or C{'pending'} |
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141 @type state: L{str} |
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142 @return: deferred that fires on subscription. |
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143 """ |
| 107 | 144 |
| 145 def remove_subscription(self, subscriber): | |
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146 """ Remove subscription to this node. |
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147 |
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148 @param subscriber: JID of the subscriptions' entity. |
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149 @type subscriber: L{jid.JID} |
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150 @return: deferred that fires on removal. |
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151 """ |
| 107 | 152 |
| 153 def get_subscribers(self): | |
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154 """ Get list of subscribers to this node. |
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155 |
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156 Retrieves the list of entities that have a subscription to this |
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157 node. That is, having the state C{'subscribed'}. |
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158 |
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159 @return: a deferred that returns a L{list} of L{jid.JID}s. |
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160 """ |
| 107 | 161 |
| 162 def is_subscribed(self, subscriber): | |
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163 """ Returns whether subscriber has a subscription to this node. |
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164 |
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165 Only returns C{True} when the subscription state (if present) is |
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166 C{'subscribed'}. |
| 107 | 167 |
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168 @param subscriber: JID of the subscriptions' entity. |
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169 @type subscriber: L{jid.JID} |
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170 @return: deferred that returns a L{bool}. |
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171 """ |
| 107 | 172 |
| 173 class ILeafNode(Interface): | |
| 174 """ """ | |
| 175 def store_items(self, items, publisher): | |
| 176 """ """ | |
| 177 | |
| 178 def remove_items(self, item_ids): | |
| 179 """ """ | |
| 180 | |
| 181 def get_items(self, max_items=None): | |
| 182 """ """ | |
| 183 | |
| 184 def get_items_by_id(self, item_ids): | |
| 185 """ """ | |
| 186 | |
| 187 def purge(self): | |
| 188 """ """ | |
| 189 | |
| 190 | |
| 191 class ISubscription(Interface): | |
| 192 """ """ |