-
Notifications
You must be signed in to change notification settings - Fork 1
/
registries.py
55 lines (42 loc) · 1.5 KB
/
registries.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
# -*- coding: utf-8 -*-
"""
kaylee.contrib.registries
~~~~~~~~~~~~~~~~~~~~~~~~~
The module provides basic Kaylee Node registry implementation(s).
:copyright: (c) 2013 by Zaur Nasibov.
:license: MIT, see LICENSE for more details.
"""
from datetime import datetime
from kaylee.node import NodesRegistry, NodeID, extract_node_id
class MemoryNodesRegistry(NodesRegistry):
def __init__(self, *args, **kwargs):
super(MemoryNodesRegistry, self).__init__(*args, **kwargs)
self._d = {}
def add(self, node):
self._d[node.id] = node
def update(self, node):
# a very naive and simple update
if node.id in self._d and node.dirty:
self._d[node.id] = node
else:
raise KeyError('Cannot update node in registry: '
'node {} was not found'.format(node))
def clean(self):
nodes_to_clean = (node for node in self._d.iteritems()
if datetime.now() - node.id.timestamp > self.timeout)
for node in nodes_to_clean:
del self._d[node]
def __len__(self):
return len(self._d)
def __delitem__(self, node):
node_id = extract_node_id(node)
try:
del self._d[node_id]
except KeyError:
pass
def __getitem__(self, node_id):
node_id = extract_node_id(node_id)
return self._d[node_id]
def __contains__(self, node):
node_id = extract_node_id(node)
return node_id in self._d