annotate idavoll/pgsql_backend.py @ 81:995ba223a43b

Implemented ComponentServiceToItemRetrievalService. Redone error() of Service a bit, now prints a brief traceback of unexpected exceptions and doens't reraise the exception.
author Ralph Meijer <ralphm@ik.nu>
date Tue, 09 Nov 2004 14:53:50 +0000
parents ec354aab3949
children ec557449d1aa
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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.protocols.jabber import jid
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4 from twisted.enterprise import adbapi
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5 import backend
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6
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7 class Storage:
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8 def __init__(self, user, database):
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9 self.dbpool = adbapi.ConnectionPool('pyPgSQL.PgSQL', user=user,
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10 database=database)
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11
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12 def _check_node_exists(self, cursor, node_id):
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13 cursor.execute("""SELECT id FROM nodes WHERE node=%s""",
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14 (node_id.encode('utf8')))
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15 if not cursor.fetchone():
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16 raise backend.NodeNotFound
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17 else:
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18 return
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19
41
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20 def _get_node_configuration(self, cursor, node_id):
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21 configuration = {}
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22 cursor.execute("""SELECT persistent, deliver_payload FROM nodes
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23 WHERE node=%s""",
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24 (node_id,))
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25 try:
41
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26 (configuration["persist_items"],
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27 configuration["deliver_payloads"]) = cursor.fetchone()
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28 return configuration
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29 except TypeError:
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30 raise backend.NodeNotFound
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31
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32 def get_node_configuration(self, node_id):
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33 return self.dbpool.runInteraction(self._get_node_configuration, node_id)
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34
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35 def _get_affiliation(self, cursor, node_id, entity):
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36 self._check_node_exists(cursor, node_id)
41
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37 cursor.execute("""SELECT affiliation FROM affiliations
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38 JOIN nodes ON (node_id=nodes.id)
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39 JOIN entities ON (entity_id=entities.id)
41
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40 WHERE node=%s AND jid=%s""",
59
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41 (node_id.encode('utf8'),
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42 entity.full().encode('utf8')))
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43
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44 try:
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45 return cursor.fetchone()[0]
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46 except TypeError:
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47 return None
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48
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49 def get_affiliation(self, node_id, entity):
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50 return self.dbpool.runInteraction(self._get_affiliation, node_id,
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51 entity)
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52
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53 def get_subscribers(self, node_id):
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54 d = self.dbpool.runInteraction(self._get_subscribers, node_id)
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55 d.addCallback(self._convert_to_jids)
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56 return d
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57
59
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58 def _get_subscribers(self, cursor,node_id):
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59 self._check_node_exists(cursor, node_id)
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60 cursor.execute("""SELECT jid, resource FROM subscriptions
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61 JOIN nodes ON (node_id=nodes.id)
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62 JOIN entities ON (entity_id=entities.id)
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63 WHERE node=%s AND
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64 subscription='subscribed'""",
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65 (node_id.encode('utf8'),))
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66 return cursor.fetchall()
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67
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68 def _convert_to_jids(self, list):
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69 return [jid.JID("%s/%s" % (l[0], l[1])).full() for l in list]
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70
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71 def store_items(self, node_id, items, publisher):
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72 return self.dbpool.runInteraction(self._store_items, node_id, items,
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73 publisher)
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74
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75 def _store_items(self, cursor, node_id, items, publisher):
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76 self._check_node_exists(cursor, node_id)
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77 for item in items:
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78 self._store_item(cursor, node_id, item, publisher)
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79
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80 def _store_item(self, cursor, node_id, item, publisher):
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81 data = item.toXml()
77
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82 cursor.execute("""UPDATE items SET date=now(), publisher=%s, data=%s
43
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83 FROM nodes
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84 WHERE nodes.id = items.node_id AND
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85 nodes.node = %s and items.item=%s""",
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86 (publisher.full().encode('utf8'),
43
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87 data.encode('utf8'),
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88 node_id.encode('utf8'),
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89 item["id"].encode('utf8')))
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90 if cursor.rowcount == 1:
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91 return
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92
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93 cursor.execute("""INSERT INTO items (node_id, item, publisher, data)
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94 SELECT id, %s, %s, %s FROM nodes WHERE node=%s""",
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95 (item["id"].encode('utf8'),
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96 publisher.full().encode('utf8'),
43
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97 data.encode('utf8'),
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98 node_id.encode('utf8')))
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99
51
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100 def add_subscription(self, node_id, subscriber, state):
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101 return self.dbpool.runInteraction(self._add_subscription, node_id,
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102 subscriber, state)
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103
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104 def _add_subscription(self, cursor, node_id, subscriber, state):
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105 self._check_node_exists(cursor, node_id)
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106 userhost = subscriber.userhost()
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107 resource = subscriber.resource or ''
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108
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109 try:
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110 cursor.execute("""INSERT INTO entities (jid) VALUES (%s)""",
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111 (userhost.encode('utf8')))
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112 except:
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113 pass
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114
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115 try:
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116 cursor.execute("""INSERT INTO subscriptions
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117 (node_id, entity_id, resource, subscription)
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118 SELECT n.id, e.id, %s, %s FROM
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119 (SELECT id FROM nodes WHERE node=%s) AS n
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120 CROSS JOIN
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121 (SELECT id FROM entities WHERE jid=%s) AS e""",
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122 (resource.encode('utf8'),
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123 state.encode('utf8'),
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124 node_id.encode('utf8'),
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125 userhost.encode('utf8')))
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126 except:
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127 cursor.execute("""SELECT subscription FROM subscriptions
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128 JOIN nodes ON (nodes.id=subscriptions.node_id)
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129 JOIN entities ON
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130 (entities.id=subscriptions.entity_id)
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131 WHERE node=%s AND jid=%s AND resource=%s""",
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132 (node_id.encode('utf8'),
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133 userhost.encode('utf8'),
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134 resource.encode('utf8')))
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135 state = cursor.fetchone()[0]
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136
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137 return {'node': node_id,
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138 'jid': subscriber,
51
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139 'subscription': state}
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140
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141 def remove_subscription(self, node_id, subscriber):
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142 return self.dbpool.runInteraction(self._remove_subscription, node_id,
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143 subscriber)
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diff changeset
144
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
145 def _remove_subscription(self, cursor, node_id, subscriber):
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
146 self._check_node_exists(cursor, node_id)
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
147 userhost = subscriber.userhost()
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
148 resource = subscriber.resource or ''
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
149
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
150 cursor.execute("""DELETE FROM subscriptions WHERE
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
151 node_id=(SELECT id FROM nodes WHERE node=%s) AND
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
152 entity_id=(SELECT id FROM entities WHERE jid=%s)
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
153 AND resource=%s""",
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
154 (node_id.encode('utf8'),
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
155 userhost.encode('utf8'),
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
156 resource.encode('utf8')))
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
157 if cursor.rowcount != 1:
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
158 raise backend.NotSubscribed
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
159
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
160 return None
40ac06941edc Added node existance checks.
Ralph Meijer <ralphm@ik.nu>
parents: 45
diff changeset
161
55
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
162 def create_node(self, node_id, owner):
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
163 return self.dbpool.runInteraction(self._create_node, node_id,
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
164 owner)
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
165
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
166 def _create_node(self, cursor, node_id, owner):
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
167 try:
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
168 cursor.execute("""INSERT INTO nodes (node) VALUES (%s)""",
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
169 (node_id.encode('utf8')))
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
170 except:
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
171 raise backend.NodeExists
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
172
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
173 cursor.execute("""SELECT 1 from entities where jid=%s""",
59
0fa161c00ed9 Use jid.JIDs everywhere in the backend.
Ralph Meijer <ralphm@ik.nu>
parents: 55
diff changeset
174 (owner.full().encode('utf8')))
55
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
175
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
176 if not cursor.fetchone():
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
177 cursor.execute("""INSERT INTO entities (jid) VALUES (%s)""",
59
0fa161c00ed9 Use jid.JIDs everywhere in the backend.
Ralph Meijer <ralphm@ik.nu>
parents: 55
diff changeset
178 (owner.full().encode('utf8')))
55
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
179
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
180 try:
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
181 cursor.execute("""INSERT INTO affiliations
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
182 (node_id, entity_id, affiliation)
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
183 SELECT n.id, e.id, 'owner' FROM
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
184 (SELECT id FROM nodes WHERE node=%s) AS n
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
185 CROSS JOIN
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
186 (SELECT id FROM entities WHERE jid=%s) AS e""",
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
187 (node_id.encode('utf8'),
59
0fa161c00ed9 Use jid.JIDs everywhere in the backend.
Ralph Meijer <ralphm@ik.nu>
parents: 55
diff changeset
188 owner.full().encode('utf8')))
55
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
189 except Exception, e:
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
190 print e
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
191
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
192 return None
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
193
62
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
194 def get_affiliations(self, entity):
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
195 return self.dbpool.runQuery("""SELECT node, affiliation FROM entities
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
196 JOIN affiliations ON
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
197 (affiliations.entity_id=entities.id)
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
198 JOIN nodes ON
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
199 (nodes.id=affiliations.node_id)
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
200 WHERE jid=%s""",
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
201 (entity.full().encode('utf8'),))
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
202
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
203 def get_subscriptions(self, entity):
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
204 d = self.dbpool.runQuery("""SELECT node, jid, resource, subscription
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
205 FROM entities JOIN subscriptions ON
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
206 (subscriptions.entity_id=entities.id)
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
207 JOIN nodes ON
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
208 (nodes.id=subscriptions.node_id)
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
209 WHERE jid=%s""",
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
210 (entity.full().encode('utf8'),))
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
211 d.addCallback(self._convert_subscription_jids)
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
212 return d
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
213
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
214 def _convert_subscription_jids(self, subscriptions):
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
215 return [(node, jid.JID('%s/%s' % (subscriber, resource)), subscription)
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 59
diff changeset
216 for node, subscriber, resource, subscription in subscriptions]
55
7c4dfef5d964 Implement create_node() in Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 51
diff changeset
217
66
13ced084aa69 Add get_node_type() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 62
diff changeset
218 def get_node_type(self, node_id):
13ced084aa69 Add get_node_type() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 62
diff changeset
219 return self.dbpool.runInteraction(self._get_node_type, node_id)
13ced084aa69 Add get_node_type() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 62
diff changeset
220
13ced084aa69 Add get_node_type() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 62
diff changeset
221 def _get_node_type(self, cursor, node_id):
13ced084aa69 Add get_node_type() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 62
diff changeset
222 self._check_node_exists(cursor, node_id)
13ced084aa69 Add get_node_type() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 62
diff changeset
223 return 'leaf'
13ced084aa69 Add get_node_type() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 62
diff changeset
224
71
a63bb34931ec Added get_nodes() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 66
diff changeset
225 def get_nodes(self):
a63bb34931ec Added get_nodes() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 66
diff changeset
226 d = self.dbpool.runQuery("""SELECT node from nodes""")
a63bb34931ec Added get_nodes() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 66
diff changeset
227 d.addCallback(lambda results: [r[0] for r in results])
a63bb34931ec Added get_nodes() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 66
diff changeset
228 return d
a63bb34931ec Added get_nodes() to Storage.
Ralph Meijer <ralphm@ik.nu>
parents: 66
diff changeset
229
80
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
230 def is_subscribed(self, node_id, subscriber):
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
231 return self.dbpool.runInteraction(self._is_subscribed, node_id,
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
232 subscriber)
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
233
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
234 def _is_subscribed(self, cursor, node_id, subscriber):
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
235 self._check_node_exists(cursor, node_id)
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
236
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
237 userhost = subscriber.userhost()
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
238 resource = subscriber.resource or ''
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
239
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
240 cursor.execute("""SELECT 1 FROM entities
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
241 JOIN subscriptions ON
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
242 (entities.id=subscriptions.entity_id)
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
243 JOIN nodes ON
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
244 (nodes.id=subscriptions.node_id)
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
245 WHERE entities.jid=%s AND resource=%s
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
246 AND node=%s""",
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
247 (userhost.encode('utf8'),
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
248 resource.encode('utf8'),
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
249 node_id.encode('utf8')))
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
250
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
251 return cursor.fetchone() is not None
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
252
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
253 def get_items_by_ids(self, node_id, item_ids):
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
254 return self.dbpool.runInteraction(self._get_items_by_ids, node_id,
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
255 item_ids)
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
256
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
257 def _get_items_by_ids(self, cursor, node_id, item_ids):
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
258 self._check_node_exists(cursor, node_id)
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
259 items = []
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
260 for item_id in item_ids:
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
261 cursor.execute("""SELECT data FROM nodes JOIN items ON
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
262 (nodes.id=items.node_id)
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
263 WHERE node=%s AND item=%s""",
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
264 (node_id.encode('utf8'),
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
265 item_id.encode('utf8')))
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
266 result = cursor.fetchone()
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
267 if result:
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
268 items.append(result[0])
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
269 return items
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
270
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
271 def get_items(self, node_id, max_items=None):
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
272 return self.dbpool.runInteraction(self._get_items, node_id, max_items)
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
273
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
274 def _get_items(self, cursor, node_id, max_items):
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
275 self._check_node_exists(cursor, node_id)
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
276 query = """SELECT data FROM nodes JOIN items ON
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
277 (nodes.id=items.node_id)
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
278 WHERE node=%s ORDER BY date DESC"""
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
279 try:
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
280 if max_items:
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
281 cursor.execute(query + " LIMIT %s",
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
282 (node_id.encode('utf8'),
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
283 max_items))
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
284 else:
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
285 cursor.execute(query, (node_id.encode('utf8')))
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
286 except Exception, e:
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
287 print e
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
288
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
289 result = cursor.fetchall()
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
290 return [r[0] for r in result]
ec354aab3949 Implemented ItemRetrievalService.
Ralph Meijer <ralphm@ik.nu>
parents: 77
diff changeset
291
41
ea3d3544a52e Rewrite using separated backend interfaces. The backend also uses a separate
Ralph Meijer <ralphm@ik.nu>
parents: 28
diff changeset
292 class BackendService(backend.BackendService):
ea3d3544a52e Rewrite using separated backend interfaces. The backend also uses a separate
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293 """ PostgreSQL backend Service for a JEP-0060 pubsub service """
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294
55
7c4dfef5d964 Implement create_node() in Storage.
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295 class NodeCreationService(backend.NodeCreationService):
7c4dfef5d964 Implement create_node() in Storage.
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296 pass
7c4dfef5d964 Implement create_node() in Storage.
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297
45
4447b3c5b857 Redefine backend classes as subclass of the implementations in backend.py.
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298 class PublishService(backend.PublishService):
4447b3c5b857 Redefine backend classes as subclass of the implementations in backend.py.
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299 pass
41
ea3d3544a52e Rewrite using separated backend interfaces. The backend also uses a separate
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parents: 28
diff changeset
300
ea3d3544a52e Rewrite using separated backend interfaces. The backend also uses a separate
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301 class NotificationService(backend.NotificationService):
45
4447b3c5b857 Redefine backend classes as subclass of the implementations in backend.py.
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302 pass
51
40ac06941edc Added node existance checks.
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303
40ac06941edc Added node existance checks.
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304 class SubscriptionService(backend.SubscriptionService):
40ac06941edc Added node existance checks.
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305 pass
62
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
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306
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
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307 class AffiliationsService(backend.AffiliationsService):
8cdbc27c467a Add get_affiliations() and get_subscriptions() to Storage.
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308 pass
80
ec354aab3949 Implemented ItemRetrievalService.
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309
ec354aab3949 Implemented ItemRetrievalService.
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310 class ItemRetrievalService(backend.ItemRetrievalService):
ec354aab3949 Implemented ItemRetrievalService.
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311 pass