/usr/share/pyshared/oops_amqp/utils.py is in python-oops-amqp 0.0.5-0ubuntu2.
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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 | # Copyright (c) 2011, Canonical Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, version 3 only.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# GNU Lesser General Public License version 3 (see the file LICENSE).
"""Utility functions for oops_amqp."""
import errno
import socket
from amqplib.client_0_8.exceptions import AMQPConnectionException
__all__ = [
'amqplib_error_types',
'close_ignoring_connection_errors',
'is_amqplib_connection_error',
'is_amqplib_ioerror',
]
# These exception types always indicate an AMQP connection error/closure.
# However you should catch amqplib_error_types and post-filter with
# is_amqplib_connection_error.
amqplib_connection_errors = (socket.error, AMQPConnectionException)
# A tuple to reduce duplication in different code paths. Lists the types of
# exceptions legitimately raised by amqplib when the AMQP server goes down.
# Not all exceptions *will* be such errors - use is_amqplib_connection_error to
# do a second-stage filter after catching the exception.
amqplib_error_types = amqplib_connection_errors + (IOError,)
def close_ignoring_connection_errors(closable):
try:
return closable.close()
except amqplib_error_types, e:
if is_amqplib_connection_error(e):
return
raise
def is_amqplib_ioerror(e):
"""Returns True if e is an amqplib internal exception."""
# Raised by amqplib rather than socket.error on ssl issues and short reads.
return type(e) is IOError and e.args == ('Socket error',)
def is_amqplib_connection_error(e):
"""Return True if e was (probably) raised due to a connection issue."""
return isinstance(e, amqplib_connection_errors) or is_amqplib_ioerror(e)
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