Hi Isuru,
On Sun, Sep 21, 2014 at 1:34 PM, Isuru Haththotuwa <isu...@apache.org>
wrote:
> Hi Devs,
>
> In Service Grouping, a cartridge that is depending on another might need
> some information (endpoint, etc.) about the latter. AFAIU this information
> will be specific to a Service in a Group. Therefore, I suggest we add this
> properties to the cartridges section of the Group definition. I have shown
> a simple Group Definition with the proposed changes [1].
>
> Here, dynamicProperties contains the names of properties of which values
> should be dynamically picked at the runtime. If a user needs custom
> properties, we should define a abstraction so that a custom implementation
> can be loaded at the runtime. The per-defined property name-value pairs are
> defined in the staticProperties section.
>
AFAIU dynamic properties are also key value pairs and these values picked
from the meta data service.Static properties are pre-defined properties to
the instance and those values are picked from the group definition.So we
don't need to published static properties to the meta data service. We only
need to published the dynamic properties to the meta data service. Is n't?
>
> These data can be published to the meta data service. The relevant member
> instances can query them and get the information about the dependencies.
> Handling this information would be done at the instance level (using
> Cartridge Agent, etc.).
>
Are we publishing the dynamic properties to the meta data service at the
instance level?
>
> Please share your feedback.
>
> [1].
> {
> "name": "group1",
> "cartridges": [
> {
> "type": "mysql",
> "dynamicProperties": [
> "hostname",
> "port"
> ],
> "staticProperties": [
> {
> "name": "property1",
> "value": "property1_value"
> },
> {
> "name": "property2",
> "value": "property2_value"
> }
> ]
> }
> ],
> "dependencies": {
> "killBehaviour": "kill-none"
> }
> }
>
> --
> Thanks and Regards,
>
> Isuru H.
> +94 716 358 048* <http://wso2.com/>*
>
>
>
Thanks,
Gayan
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