Re: [Dev] Listen for an update to a registry resource

[Anjana Fernando]

I don't think this approach works when we change the resource from another
server though, for example, if you're using a separate GREG to update a
resource, other servers will not get notified I presume. It would have to
live in the same server. So I can see this approach only work strictly in a
worker/manager separated environment, where you'd do the change only in the
manager, and the same server will get notified, and the data service be
redeployed, and hopefully dep-sync will re-deploy it, but that also, I'm
not sure that will work, since the service itself didn't actually change.
So do check these aspects when following this approach.

Cheers,
Anjana.

On Fri, Dec 19, 2014 at 1:58 AM, Janaka Ranabahu  wrote:
>
> Hi Gayeshan,
>
> On Thu, Dec 18, 2014 at 6:23 PM, Gayashan Amarasinghe 
> wrote:
>>
>> Hi all,
>>
>> I have a set of data services deployed in DSS which are exposed as
>> RESTfull services. For each of these services there's a specific policy
>> stored in the governance registry. (service knows this policy path from a
>> parameter in the services xml file)
>>
>> I have requirement to register some sort of a listener/observer to this
>> policy resource in the registry so that once the policy is updated in the
>> registry it can redeploy the service. Is it possible to achieve this using
>> the existing extension points of registry?
>>
> ​Yes, You need to write a registry handler. Please refer [1] and [2] for
> more information.
>
> [1] https://docs.wso2.com/display/Governance460/Handlers
> [2] https://docs.wso2.com/display/Governance460/Handler+Architecture
>
> Thanks,
> Janaka​
>
>
>>
>> Thanks.
>> /Gayashan
>>
>> --
>> *Gayashan Amarasinghe*
>> Software Engineer | Platform TG
>> WSO2, Inc. | http://wso2.com
>> lean. enterprise. middleware
>>
>> Mobile : +94718314517
>> Blog : gayashan-a.blogspot.com
>>
>> ___
>> Dev mailing list
>> Dev@wso2.org
>> http://wso2.org/cgi-bin/mailman/listinfo/dev
>>
>>
>
> --
> *Janaka Ranabahu*
> Senior Software Engineer; WSO2 Inc.; http://wso2.com
>
>
> *E-mail: jan...@wso2.com **M: **+94 718370861
> <%2B94%20718370861>*
>
> Lean . Enterprise . Middleware
>
> ___
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> Dev@wso2.org
> http://wso2.org/cgi-bin/mailman/listinfo/dev
>
>

-- 
*Anjana Fernando*
Senior Technical Lead
WSO2 Inc. | http://wso2.com
lean . enterprise . middleware
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Re: [Dev] Listen for an update to a registry resource

[Janaka Ranabahu]

Hi Gayeshan,

On Thu, Dec 18, 2014 at 6:23 PM, Gayashan Amarasinghe 
wrote:
>
> Hi all,
>
> I have a set of data services deployed in DSS which are exposed as
> RESTfull services. For each of these services there's a specific policy
> stored in the governance registry. (service knows this policy path from a
> parameter in the services xml file)
>
> I have requirement to register some sort of a listener/observer to this
> policy resource in the registry so that once the policy is updated in the
> registry it can redeploy the service. Is it possible to achieve this using
> the existing extension points of registry?
>
​Yes, You need to write a registry handler. Please refer [1] and [2] for
more information.

[1] https://docs.wso2.com/display/Governance460/Handlers
[2] https://docs.wso2.com/display/Governance460/Handler+Architecture

Thanks,
Janaka​


>
> Thanks.
> /Gayashan
>
> --
> *Gayashan Amarasinghe*
> Software Engineer | Platform TG
> WSO2, Inc. | http://wso2.com
> lean. enterprise. middleware
>
> Mobile : +94718314517
> Blog : gayashan-a.blogspot.com
>
> ___
> Dev mailing list
> Dev@wso2.org
> http://wso2.org/cgi-bin/mailman/listinfo/dev
>
>

-- 
*Janaka Ranabahu*
Senior Software Engineer; WSO2 Inc.; http://wso2.com


*E-mail: jan...@wso2.com **M: **+94 718370861*

Lean . Enterprise . Middleware
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[Dev] Listen for an update to a registry resource

[Gayashan Amarasinghe]

Hi all,

I have a set of data services deployed in DSS which are exposed as RESTfull
services. For each of these services there's a specific policy stored in
the governance registry. (service knows this policy path from a parameter
in the services xml file)

I have requirement to register some sort of a listener/observer to this
policy resource in the registry so that once the policy is updated in the
registry it can redeploy the service. Is it possible to achieve this using
the existing extension points of registry?

Thanks.
/Gayashan

-- 
*Gayashan Amarasinghe*
Software Engineer | Platform TG
WSO2, Inc. | http://wso2.com
lean. enterprise. middleware

Mobile : +94718314517
Blog : gayashan-a.blogspot.com
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