90d6ef8130
Glance currently uses a custom notifier and it has been maintaining it
for a long time. In a hope of reducing duplicated code and improving
cross-project contributions, this patch replaces the old notifier with
the one, recently developed, in oslo.messaging.
The oslo.messaging project is a port of the old oslo-rpc code to a
standalone, more stable and improved project. It brings all the benefits
that oslo-rpc would've brought as well as an easier way to integrate
with other projects.
This patch also:
- Reduces the code shipped along with Glance since all the code
copied from oslo-incubator related to the notifier is not needed
anymore.
- Improves the stability of existing, broker based, notifications.
- Brings HA support.
- Keeps backward compatibility by translating the old
`notifier_strategy` into oslo.messaging drivers.
Changes to the code:
- It is now necessary to pass the request context to the
notification call.
- Notifier package is no longer necessary. A notifier module was
added instead.
- New, notifier related, configurations were added.
- A lot of code was removed
Since there's still not an official release, requirements.txt points to
the latest tarball created. A release for oslo.messaging is planned for
Icehouse.
docImpact
Implements bp oslo-messaging
Change-Id: I8cd84772bc5867e06b2a50ed7e15b9e86f0b94ad
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