Basic Protection Service

[yinwei]

Implement the basic protection service framework.
Basically, this service will execute a protection operation and persist results with transactions in bank.
It will also collect operation execution result and update operation status asynchronously as well.
As a basic framework, we don't consider error case in this patch, eg. protection service crash and redo operation handling. We will handle error cases in following patches.

[yinwei (yinweiishere-n)]

upload protection service protect sequence (normal case only)

[Yingzhe Zeng (zengyingzhe)]

Hi yinwei,
I got some questions for the sequence diagram.
1. Would it be better the create transaction call be invoked by work-flow engine?
2. Why need show plan, can't the plan info be passed by RPC call?
3. Periodic check event is running as a coroutine?

[yinwei (yinweiishere-n)]

Hi Yingzhe,

reply in line:
1. Would it be better the create transaction call be invoked by work-flow engine?
[wei] Yes, sure. We could put all execution logic inot work-flow engine while only leave rpc handling (serialize/deserialize/error handling) in rpc worker.

2. Why need show plan, can't the plan info be passed by RPC call?
[wei] I do prefer to embed the whole plan into the operation message during RPC call. This sequence is based on current API we have.

3. Periodic check event is running as a coroutine?
[wei] Yes. There should be a eventlet threadpool.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/265760

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/265760
Committed: https://git.openstack.org/cgit/openstack/smaug/commit/?id=28edb063ec5cb5fdaadde296a37c81f829861f3e
Submitter: Jenkins
Branch: master

commit 28edb063ec5cb5fdaadde296a37c81f829861f3e
Author: wangliuan <[e-mail]>
Date: Mon Jan 11 17:05:03 2016 +0800

    Implement the basic protection service framework

    Basically, this service will execute a protection operation and persist
    results with transactions in bank
    It will also collect operation execution result and update operation
    status
    As a basic framework,we just implement the interface and a simple
    protection example in this patch

    Change-Id: I1f3970e699b6f2ce2e6a9f2fa13f71789e7c288a
    Closes-Bug: #1524691