OpenStack library for messaging
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Hervé Beraud 391ce7fc69 Correctly handle missing RabbitMQ queues
Currently, setting the '[oslo_messaging] direct_mandatory_flag' config
option to 'True' (the default) will result in a 'MessageUndeliverable'
exception being raised when sending a reply if a RabbitMQ queue is
missing [1]. It was the responsibility of the application to handle
this exception, however, many applications are not doing so. This has
resulted in a number of bug reports.

Start handling this error condition, using a retry loop to attempt to
resend the message and work around any temporary glitches. Since
attempting to send a reply will will no longer raise an exception,
there is little benefit in retaining the '[oslo_messaging]
direct_mandatory_flag' config option: users setting this to False will
simply not benefit from the retry logic and improved logging added
here. This option is already deprecated though and will be fully
removed in a future release.

[1] https://www.rabbitmq.com/channels.html

Change-Id: Id5cddbefbe24ef100f1cc522f44430df77d217cb
Closes-Bug: #1905965
(cherry picked from commit 4937949dff)
2021-02-18 11:46:49 +01:00
doc Correctly handle missing RabbitMQ queues 2021-02-18 11:46:49 +01:00
etc Fix spelling typo in output 2015-09-24 18:11:22 +08:00
oslo_messaging Correctly handle missing RabbitMQ queues 2021-02-18 11:46:49 +01:00
releasenotes Correctly handle missing RabbitMQ queues 2021-02-18 11:46:49 +01:00
tools Simplify tools/test-setup.sh 2020-07-01 14:40:24 +01:00
.coveragerc Update .coveragerc after the removal of respective directory 2016-10-18 17:20:09 +05:30
.gitignore Ignore releasenote cache within git untracked files 2019-12-18 17:03:10 +01:00
.gitreview Update .gitreview for stable/victoria 2020-09-11 20:58:42 +00:00
.stestr.conf Switch to stestr 2018-07-04 08:33:49 +07:00
.zuul.yaml Dropping lower constraints testing 2021-02-12 12:51:17 +01:00
CONTRIBUTING.rst Align contributing doc with oslo's policy 2020-05-04 18:25:31 +02:00
HACKING.rst Update URLs in documents according to document migration 2017-07-12 22:54:02 +08:00
LICENSE Add oslo.messaging project infrastructure 2013-06-15 08:43:50 +01:00
README.rst Replace git.openstack.org URLs with opendev.org URLs 2019-04-26 10:31:26 +08:00
babel.cfg Setup for translation 2014-06-05 22:48:44 +02:00
bindep.txt Simplify tools/test-setup.sh 2020-07-01 14:40:24 +01:00
requirements.txt [goal] Migrate testing to ubuntu focal 2020-09-10 00:46:55 +00:00
setup.cfg [goal] Migrate testing to ubuntu focal 2020-09-10 00:46:55 +00:00
setup.py remove outdated header 2020-02-10 18:33:15 +01:00
test-requirements.txt [goal] Migrate testing to ubuntu focal 2020-09-10 00:46:55 +00:00
tox.ini Dropping lower constraints testing 2021-02-12 12:51:17 +01:00

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Oslo Messaging Library

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The Oslo messaging API supports RPC and notifications over a number of different messaging transports.