blob: 20c31cf97585d9242c33de49815291b02d1871a1 (
plain)
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
|
from kafka.common import IllegalStateError
class Future(object):
def __init__(self):
self.is_done = False
self.value = None
self.exception = None
self._callbacks = []
self._errbacks = []
def succeeded(self):
return self.is_done and not self.exception
def failed(self):
return self.is_done and self.exception
def retriable(self):
try:
return self.exception.retriable
except AttributeError:
return False
def success(self, value):
if self.is_done:
raise IllegalStateError('Invalid attempt to complete a request future which is already complete')
self.value = value
self.is_done = True
for f in self._callbacks:
f(value)
return self
def failure(self, e):
if self.is_done:
raise IllegalStateError('Invalid attempt to complete a request future which is already complete')
self.exception = e
self.is_done = True
for f in self._errbacks:
f(e)
return self
def add_callback(self, f):
if self.is_done and not self.exception:
f(self.value)
else:
self._callbacks.append(f)
return self
def add_errback(self, f):
if self.is_done and self.exception:
f(self.exception)
else:
self._errbacks.append(f)
return self
|
