Mercurial > libervia-web

annotate libervia/web/pages/_browser/cache.py @ 1533:285c49d7aad3

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_browser (template): add `media_type_main` and `media_type_sub` filters: this is to follow main template module change, as string slicing is not done the same way in jinja2 and nunjucks.
author Goffi <goffi@goffi.org>
date Thu, 22 Jun 2023 16:36:18 +0200
parents d7c78722e4f8
children 9b451115e726
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 from browser import window, console as log
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2 from browser.local_storage import storage
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3 from dialog import notification
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4 from bridge import Bridge, AsyncBridge
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5 import json
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6
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7 log.warning = log.warn
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8 session_uuid = window.session_uuid
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9 bridge = Bridge()
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10 async_bridge = AsyncBridge()
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11
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12 # XXX: we don't use browser.object_storage because it is affected by
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13 # https://github.com/brython-dev/brython/issues/1467 and mixing local_storage.storage
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14 # and object_storage was resulting in weird behaviour (keys found in one not in the
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15 # other)
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16
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17
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18 class Cache:
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19
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20 def __init__(self):
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21 try:
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22 cache = storage['libervia_cache']
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23 except KeyError:
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24 self.request_data_from_backend()
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25 else:
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26 cache = json.loads(cache)
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27 if cache['metadata']['session_uuid'] != session_uuid:
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28 print("data in cache are not valid for this session, resetting")
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29 del storage['libervia_cache']
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30 self.request_data_from_backend()
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31 else:
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32 self._cache = cache
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33 print("storage cache is used")
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34
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35 @property
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36 def roster(self):
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37 return self._cache['roster']
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38
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39 @property
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40 def identities(self):
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41 return self._cache['identities']
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42
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43 def update(self):
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44 print(f"updating: {self._cache}")
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45 storage['libervia_cache'] = json.dumps(self._cache)
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46 print("cache stored")
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47
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48 def _store_if_complete(self):
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49 self._completed_count -= 1
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50 if self._completed_count == 0:
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51 del self._completed_count
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52 self.update()
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53
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54 def get_contacts_cb(self, contacts):
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55 print("roster received")
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56 roster = self._cache['roster']
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57 for contact_jid, attributes, groups in contacts:
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58 roster[contact_jid] = {
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59 'attributes': attributes,
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60 'groups': groups,
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61 }
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62 self._store_if_complete()
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63
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64 def identities_base_get_cb(self, identities_raw):
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65 print("base identities received")
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66 identities = json.loads(identities_raw)
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67 self._cache['identities'].update(identities)
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68 self._store_if_complete()
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69
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70 def request_failed(self, exc, message):
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71 notification.show(message.format(exc=exc), "error")
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72 self._store_if_complete()
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73
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74 def request_data_from_backend(self):
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75 self._cache = {
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76 'metadata': {
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77 "session_uuid": session_uuid,
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78 },
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79 'roster': {},
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80 'identities': {},
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81 }
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82 self._completed_count = 2
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83 print("requesting roster to backend")
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84 bridge.contacts_get(
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85 callback=self.get_contacts_cb,
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86 errback=lambda e: self.request_failed(e, "Can't get contacts: {exc}")
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87 )
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88 print("requesting base identities to backend")
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89 bridge.identities_base_get(
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90 callback=self.identities_base_get_cb,
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91 errback=lambda e: self.request_failed(e, "Can't get base identities: {exc}")
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92 )
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93
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94 async def fill_identities(self, entities) -> None:
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95 """Check that identities for entities exist, request them otherwise"""
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96 to_get = {e for e in entities if e not in self._cache['identities']}
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97 if to_get:
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98 try:
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99 new_identities_raw = await async_bridge.identities_get(
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100 list(to_get),
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101 ['avatar', 'nicknames'],
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102 )
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103 except Exception as e:
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104 notification.show(
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105 f"Can't get identities: {e}",
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106 "error"
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107 )
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108 else:
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109 new_identities = json.loads(new_identities_raw)
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110 print(f"new identities: {new_identities.keys()}")
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111 self._cache['identities'].update(new_identities)
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112 self.update()
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113 else:
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114 # we already have all identities
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115 log.debug("no missing identity")
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116
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117 def match_identity(self, entity_jid, text, identity=None):
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118 """Returns True if a text match an entity identity
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119
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120 identity will be matching if its jid or any of its name contain text
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121 @param entity_jid: jid of the entity to check
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122 @param text: text to use for filtering. Must be in lowercase and stripped
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123 @param identity: identity data
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124 if None, it will be retrieved if jid is not matching
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125 @return: True if entity is matching
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126 """
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127 if text in entity_jid:
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128 return True
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129 if identity is None:
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130 try:
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131 identity = self.identities[entity_jid]
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132 except KeyError:
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133 print(f"missing identity: {entity_jid}")
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134 return False
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135 return any(text in n.lower() for n in identity['nicknames'])
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136
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137 def matching_identities(self, text):
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138 """Return identities corresponding to a text
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139
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140 """
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141 text = text.lower().strip()
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142 for entity_jid, identity in self._cache['identities'].items():
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143 if ((text in entity_jid
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144 or any(text in n.lower() for n in identity['nicknames'])
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145 )):
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146 yield entity_jid
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147
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148
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149 cache = Cache()
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150 roster = cache.roster
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151 identities = cache.identities