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From Lakmal Warusawithana <lak...@wso2.com>
Subject Re: Undeployment of Application or Application Deployment Policy
Date Wed, 03 Dec 2014 08:54:45 GMT
On Wed, Dec 3, 2014 at 2:23 PM, Reka Thirunavukkarasu <reka@wso2.com> wrote:

> Hi
>
> On Wed, Dec 3, 2014 at 2:19 PM, Lakmal Warusawithana <lakmal@wso2.com>
> wrote:
>
>>
>>
>> On Wed, Dec 3, 2014 at 2:18 PM, Nirmal Fernando <nirmal@wso2.com> wrote:
>>
>>> Hi Lakmal,
>>>
>>>
>>> On Wed, Dec 3, 2014 at 2:14 PM, Lakmal Warusawithana <lakmal@wso2.com>
>>> wrote:
>>>
>>>> I think we need to understand terminology correctly.
>>>>
>>>>    - Application create - create application json
>>>>
>>>> If the
>>>
>>>>
>>>>    - deployment policy - deployment pattens of the application
>>>>
>>>> shouldn't we remove the deployment policy, once the application
>>> undeployed ?
>>>
>> +1
>>
>
> We are removing the deployment policy once the application is underplayed.
>
> Another thing is that, can the users be able to remove the created
> application at some point?
>

Yes, IMO.


>
> Thanks,
> Reka
>
>>
>>
>>>
>>>>    - application deploy - combine application json+deployment policy.
>>>>    - this is the time we are actually spin instances/containers.
>>>>    - application un deploy - remove all instances/containers/monitors
>>>>
>>>> Are we clear now?
>>>>
>>>>
>>>> On Wed, Dec 3, 2014 at 10:48 AM, Reka Thirunavukkarasu <reka@wso2.com>
>>>> wrote:
>>>>
>>>>> Hi All,
>>>>>
>>>>> As from earlier model, we were wiping out the monitors when we
>>>>> undeploy the application. But we are currently starting the monitors
when
>>>>> we deploy the deployment policy. So, when undeploying the policy only,
we
>>>>> will have to wipe out all the clusters and the monitors. In that case,
the
>>>>> flow for the undeployment of the policy will be as below:
>>>>>
>>>>> Undeployment of policy
>>>>> ------------------------------
>>>>>
>>>>> - Update the application monitor with the flag saying terminating=true
>>>>> - All Application instances will get updated as state = terminating
>>>>> - Underlying groups instances and cluster instances will be updated as
>>>>> state = terminating by the parent notification
>>>>> - Upon cluster instance terminating event, all the members will get to
>>>>> wiped out in the cluster instance
>>>>> - Cluster Instance will get to Terminated once all the members are
>>>>> wiped out
>>>>> - Once all the clusters instances are wiped out, cluster monitor will
>>>>> get wiped out
>>>>> - Upon cluster Instance terminated, group instance and then
>>>>> application instance will be terminated
>>>>> - Once all the application instances are wiped out, app monitor will
>>>>> get to removed and send application Terminated event.
>>>>> - Call CC to remove all the clusters related to application in Topology
>>>>> - Autosclaer will remove the in-memory clusters upon Topology
>>>>> ClustersRemovedEvent
>>>>>
>>>>> Please share your concerns whether we can go ahead with this flow.
>>>>>
>>>>> Thanks,
>>>>> Reka
>>>>>
>>>>> --
>>>>> Reka Thirunavukkarasu
>>>>> Senior Software Engineer,
>>>>> WSO2, Inc.:http://wso2.com,
>>>>> Mobile: +94776442007
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Lakmal Warusawithana
>>>> Vice President, Apache Stratos
>>>> Director - Cloud Architecture; WSO2 Inc.
>>>> Mobile : +94714289692
>>>> Blog : http://lakmalsview.blogspot.com/
>>>>
>>>>
>>>
>>>
>>> --
>>>
>>> Thanks & regards,
>>> Nirmal
>>>
>>> Senior Software Engineer- Platform Technologies Team, WSO2 Inc.
>>> Mobile: +94715779733
>>> Blog: http://nirmalfdo.blogspot.com/
>>>
>>>
>>>
>>
>>
>> --
>> Lakmal Warusawithana
>> Vice President, Apache Stratos
>> Director - Cloud Architecture; WSO2 Inc.
>> Mobile : +94714289692
>> Blog : http://lakmalsview.blogspot.com/
>>
>>
>
>
> --
> Reka Thirunavukkarasu
> Senior Software Engineer,
> WSO2, Inc.:http://wso2.com,
> Mobile: +94776442007
>
>
>


-- 
Lakmal Warusawithana
Vice President, Apache Stratos
Director - Cloud Architecture; WSO2 Inc.
Mobile : +94714289692
Blog : http://lakmalsview.blogspot.com/

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