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Roman Podoliaka 88fe8afe50 Fix a race condition in agents status update code

Code handling agents status updates coming via RPC checks,
if a corresponding entry for the given (agent_type, host)
pair already exists in DB and updates it. And if it doesn't
exist, a new entry is created.

Without a unique constraint this can cause a race condition
resulting in adding of two agent entries having the same value
of (agent_type, host) pair.

Note, that it's already not allowed to have multiple agents of
the same type having the same host value, but currently it's
enforced only at code level, not at DB schema level, which
effectively makes race conditions possible.

Closes-Bug: #1254246

Change-Id: I1ebaa111154b3d6b34074705b579097ab730594c

2013-12-09 15:18:34 +02:00

bin

Use built-in print() instead of print statement

2013-09-21 07:30:33 -07:00

doc

Fix misspells

2013-12-03 15:03:47 -08:00

etc

Merge "Removed erronus config file comment"

2013-12-07 10:22:40 +00:00

neutron

Fix a race condition in agents status update code

2013-12-09 15:18:34 +02:00

quantum

Re-assign quantum.api module as last operation

2013-07-15 22:51:28 +02:00

tools

Remove obsolete redhat-eventlet.patch

2013-10-09 21:47:48 +01:00

.coveragerc

fix some missing change from quantum to neutron

2013-07-08 12:11:04 +08:00

.gitignore

Updates .gitignore

2013-11-28 23:18:03 +08:00

.gitreview

Rename quantum to neutron in .gitreview.

2013-07-06 12:25:09 -04:00

.mailmap

Update Zhenguo Niu's mailmap

2013-11-26 09:25:35 +08:00

.pylintrc

Rename Quantum to Neutron

2013-07-06 15:02:43 -04:00

.testr.conf

Add support for managing async processes

2013-10-14 07:20:02 +00:00

babel.cfg

Use babel to generate translation file

2013-01-24 00:20:32 +08:00

HACKING.rst

Cleanup HACKING.rst

2013-11-11 10:32:34 -08:00

LICENSE

Adding Apache Version 2.0 license file. This is the official license agreement under which Quantum code is available to

2011-08-08 12:31:04 -07:00

MANIFEST.in

Rename Quantum to Neutron

2013-07-06 15:02:43 -04:00

openstack-common.conf

Fix import log_handler error with publish_errors set

2013-11-05 22:47:32 -08:00

README.rst

Rename Quantum to Neutron

2013-07-06 15:02:43 -04:00

requirements.txt

Ensure get_pid_to_kill works with rootwrap script

2013-11-20 09:57:23 -06:00

run_tests.sh

Don't need to init testr in run_tests.sh

2013-09-12 01:04:09 +08:00

setup.cfg

Add fwaas_driver.ini to setup.cfg

2013-12-06 11:13:09 -06:00

setup.py

Updated from global requirements

2013-10-01 16:13:29 +00:00

test-requirements.txt

Replace stubout with fixtures

2013-11-24 10:46:08 -05:00

TESTING

Add support for managing async processes

2013-10-14 07:20:02 +00:00

tox.ini

Remove obsolete redhat-eventlet.patch

2013-10-09 21:47:48 +01:00

README.rst

# -- Welcome!

You have come across a cloud computing network fabric controller. It has identified itself as "Neutron." It aims to tame your (cloud) networking!

# -- External Resources:

The homepage for Neutron is: http://launchpad.net/neutron . Use this site for asking for help, and filing bugs. Code is available on github at <http://github.com/openstack/neutron>.

The latest and most in-depth documentation on how to use Neutron is available at: <http://docs.openstack.org>. This includes:

Neutron Administrator Guide http://docs.openstack.org/trunk/openstack-network/admin/content/

Neutron API Reference: http://docs.openstack.org/api/openstack-network/2.0/content/

The start of some developer documentation is available at: http://wiki.openstack.org/NeutronDevelopment

For help using or hacking on Neutron, you can send mail to <mailto:openstack-dev@lists.openstack.org>.