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Greetings,<br>
<br>
Firstly, thank you for everyone joined Zaqar sessions at Tokyo
summit. We definitely made some great progress for those working
sessions. Here are the high level summary and those are basically
our Mitaka priorities. I may miss something so please feel free to
comment/reply this mail.<br>
<br>
Sahara + Zaqar<br>
---------------------<br>
<br>
We have a great discussion with Ethan Gafford from Sahara team.
Sahara team is happy to use Zaqar to fix some potential security
issues. The main user case will be covered in Mitaka is protecting
tenant guest and data from administrative user. So what Zaqar team
needs to do in Mitaka is completing the zaqar client function gaps
for v2 to support signed URL, which will be used by Sahara guest
agent. Ethan will create a spec in Sahara to track this work. This
is a POC of what it'd look like to have a guest agent in Sahara on
top of Zaqar. The Sahara team has not decided to use Zaqar yet but
this would be the bases for that discussion.<br>
<br>
Horizon + Zaqar<br>
----------------------<br>
<br>
We used 1 horizon work session and 1 Zaqar work session to discuss
this topic. The main user case we would like to address is the async
notification so that Horizon won't have to poll the other OpenStack
components(e.g. Nova, Glance or Cinder) per second to get the latest
status. And I'm really happy to see we worked out a basic plan by
leveraging Zaqar's notification and websocket.<br>
<br>
1. Implement a basic filter for Zaqar subscription, so that Zaqar
can decide if the message should be posted/forwarded to the
subscriber when there is a new message posted the queue. With this
feature, Horizon will only be notified by its interested
notifications.<br>
<br>
<a
href="https://blueprints.launchpad.net/zaqar/+spec/suport-filter-for-subscription">https://blueprints.launchpad.net/zaqar/+spec/suport-filter-for-subscription</a><br>
<br>
2. Listen OpenStack notifications<br>
<br>
We may need more discussion about this to make sure if it should be
in the scope of Zaqar's services. It could be separated
process/service of Zaqar to listen/collect interested
notifications/messages and post them in to particular Zaqar queues.
It sounds very interesting and useful but we need to define the
scope carefully for sure.<br>
<br>
<br>
Pool Group and Flavor<br>
-----------------------------<br>
<br>
Thanks MD MADEEM proposed this topic so that we have a chance to
review the design of pool, pool group and flavor. Now the pool group
and flavor has a 1:1 mapping relationship and the pool group and
pool has a 1:n mapping relationship. But end user don't know the
existence of pool, so flavor is the way for end user to select what
kind of storage(based on capabilities) he want to use. Since pool
group can't provide more information than flavor so it's not really
necessary, so we decide to deprecate/remove it in Mitaka. Given this
is hidden from users (done automatically by Zaqar), there won't be
an impact on the end user and the API backwards compatibility will
be kept.<br>
<br>
<a
href="https://blueprints.launchpad.net/zaqar/+spec/deprecate-pool-group">https://blueprints.launchpad.net/zaqar/+spec/deprecate-pool-group</a><br>
<br>
Zaqar Client<br>
----------------<br>
<br>
Some function gaps need to be filled in Mitaka. Personally, I would
rate the client work as the 1st priority of M since it's very key
for the integration with other OpenStack components. For v1.1, the
support for pool and flavor hasn't been completed. For v2, we're
stilling missing the support for subscription and signed URL. <br>
<br>
<a
href="https://blueprints.launchpad.net/zaqar/+spec/finish-client-support-for-v1.1-features">https://blueprints.launchpad.net/zaqar/+spec/finish-client-support-for-v1.1-features</a><br>
<br>
SqlAlchemy Migration<br>
-----------------------------<br>
<br>
Now we're missing the db migration support for SqlAlchemy, the
control plane driver. We will fix it in M as well.<br>
<a
href="https://blueprints.launchpad.net/zaqar/+spec/sqlalchemy-migration"><br>
https://blueprints.launchpad.net/zaqar/+spec/sqlalchemy-migration</a><br>
<br>
<br>
Guys, please contribute this thread to fill the points/things I
missed or pop up in #openstack-zaqar channel directly with questions
and suggestions.<br>
<pre class="moz-signature" cols="72">--
Cheers & Best regards,
Fei Long Wang (王飞龙)
--------------------------------------------------------------------------
Senior Cloud Software Engineer
Tel: +64-48032246
Email: <a class="moz-txt-link-abbreviated" href="mailto:flwang@catalyst.net.nz">flwang@catalyst.net.nz</a>
Catalyst IT Limited
Level 6, Catalyst House, 150 Willis Street, Wellington
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