def delete_user_data(self, **kwargs):
"Delete all the user-data"
# We might get a UUID or a client_name/service_name/user_id tuple.
uuid = kwargs.get('uuid')
if not uuid:
assert kwargs.get('client_name') != None
assert kwargs.get('service_name') != None
assert kwargs.get('user_id') != None
authz = yield Authz.find(where=self.args_to_where(**kwargs), limit=1)
if authz:
uuid = authz.uuid
else:
defer.returnValue(False)
yield UserData.deleteAll(where=['uuid = ?', uuid])
yield GranularData.deleteAll(where=['uuid = ?', uuid])
yield StreamCache.deleteAll(where=['uuid = ?', uuid])
defer.returnValue(True)
def update_stream_cache(self, data, authorization):
records_to_process = {
'add': [], # should contain dicts
'remove': [], # should contain db records
'update': [], # should contain dicts
}
def categorize(db_data):
db_data = list(flatten(db_data))
db_ids = [record.item_id for record in db_data]
new_ids = [datum['item_id'] for datum in data]
# find records to add
for new_datum in data:
if not new_datum['item_id'] in db_ids:
records_to_process['add'].append(new_datum)
# find records to delete
for db_datum in db_data:
if not db_datum.item_id in new_ids:
records_to_process['remove'].append(db_datum)
# find records to update
for db_datum in db_data:
for new_datum in data:
new_json = new_datum['data']
old_json = json.loads(db_datum.data)
if db_datum.item_id == new_datum['item_id'] and new_json != old_json:
change = {
'old': db_datum,
'new': new_datum
}
records_to_process['update'].append(change)
return
def add(_):
return defer.gatherResults([
StreamCache(
uuid=authorization.uuid,
item_id=datum['item_id'],
timestamp=datum['timestamp'],
data=json.dumps(datum['data']),
).save()
for datum in records_to_process['add']
])
def update_single(change):
# change is a dictionary that contains two keys, `new` and `old`.
# `new` contains the dictionary with new data from the 3rd party api that we need to update *to*
# `old` containst the database record that needs to be updated with new data
new_data = change['new']
db_record = change['old']
db_record.data = json.dumps(new_data['data'])
return db_record.save()
def update(_):
return defer.gatherResults([
update_single(change)
for change in records_to_process['update']])
def remove(_):
return defer.gatherResults([
record.delete()
for record in records_to_process['remove']])
uuid = authorization.uuid
return StreamCache.find(
where=['uuid=?', uuid]
).addCallback(categorize).addCallback(add).addCallback(remove).addCallback(update)
