/usr/lib/python2.7/dist-packages/amqp/utils.py is in python-amqp 1.3.3-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | from __future__ import absolute_import
import sys
try:
import fcntl
except ImportError:
fcntl = None # noqa
class promise(object):
if not hasattr(sys, 'pypy_version_info'):
__slots__ = tuple(
'fun args kwargs value ready failed on_success on_error'.split()
)
def __init__(self, fun, args=(), kwargs=(),
on_success=None, on_error=None):
self.fun = fun
self.args = args
self.kwargs = kwargs
self.ready = False
self.failed = False
self.on_success = on_success
self.on_error = on_error
self.value = None
def __repr__(self):
return '<$: {0.fun.__name__}(*{0.args!r}, **{0.kwargs!r})'.format(
self,
)
def __call__(self, *args, **kwargs):
try:
self.value = self.fun(
*self.args + args if self.args else args,
**dict(self.kwargs, **kwargs) if self.kwargs else kwargs
)
except Exception as exc:
self.set_error_state(exc)
else:
if self.on_success:
self.on_success(self.value)
finally:
self.ready = True
def then(self, callback=None, on_error=None):
self.on_success = callback
self.on_error = on_error
return callback
def set_error_state(self, exc):
self.failed = True
if self.on_error is None:
raise
self.on_error(exc)
def throw(self, exc):
try:
raise exc
except exc.__class__ as with_cause:
self.set_error_state(with_cause)
def noop():
return promise(lambda *a, **k: None)
try:
from os import set_cloexec # Python 3.4?
except ImportError:
def set_cloexec(fd, cloexec): # noqa
try:
FD_CLOEXEC = fcntl.FD_CLOEXEC
except AttributeError:
raise NotImplementedError(
'close-on-exec flag not supported on this platform',
)
flags = fcntl.fcntl(fd, fcntl.F_GETFD)
if cloexec:
flags |= FD_CLOEXEC
else:
flags &= ~FD_CLOEXEC
return fcntl.fcntl(fd, fcntl.F_SETFD, flags)
def get_errno(exc):
""":exc:`socket.error` and :exc:`IOError` first got
the ``.errno`` attribute in Py2.7"""
try:
return exc.errno
except AttributeError:
try:
# e.args = (errno, reason)
if isinstance(exc.args, tuple) and len(exc.args) == 2:
return exc.args[0]
except AttributeError:
pass
return 0
|