Hi Tal,
Did you get the attachments ?
If not . . please find below templates.
db.yaml
tosca_definitions_version: tosca_simple_yaml_1_0
topology_template:
substitution_mappings:
# node_type: tosca.nodes.Database
node_type: my.nodes.database
capabilities:
database_endpoint: [ db_app, database_endpoint ]
node_templates:
db_app:
type: tosca.nodes.Database
properties:
name: sub_map_db
interfaces:
Standard:
create:
implementation: test_plugin.test_method
delete:
implementation: test_plugin.test_method
requirements:
- host:
node: db_server
db_server:
type: tosca.nodes.DBMS
interfaces:
Standard:
create:
implementation: test_plugin.test_method
delete:
implementation: test_plugin.test_method
requirements:
- host:
node: db_host
db_host:
type: tosca.nodes.Compute
interfaces:
Standard:
create:
implementation: test_plugin.test_method
delete:
implementation: test_plugin.test_method
web.yaml
tosca_definitions_version: tosca_simple_yaml_1_0
imports:
- ./db.yaml
node_types:
my.nodes.database:
derived_from: tosca.nodes.Database
topology_template:
node_templates:
web_app:
type: tosca.nodes.WebApplication
interfaces:
Standard:
create:
implementation: test_plugin.test_method
delete:
implementation: test_plugin.test_method
requirements:
- host:
node: web_server
- dependency:
node: database
web_server:
type: tosca.nodes.WebServer
interfaces:
Standard:
create:
implementation: test_plugin.test_method
delete:
implementation: test_plugin.test_method
requirements:
- host:
node: web_host
web_host:
type: tosca.nodes.Compute
interfaces:
Standard:
create:
implementation: test_plugin.test_method
delete:
implementation: test_plugin.test_method
database:
# type: tosca.nodes.Database
type: my.nodes.database
properties:
name: web_db
Regards,
DJ
-----Original Message-----
From: D Jayachandran
Sent: Friday, May 26, 2017 2:30 PM
To: [email protected]
Cc: Vaishnavi K.R <[email protected]>; S Shenbaga Rajan
<[email protected]>
Subject: RE: Query related to substitution mapping
Hi Tal,
Please find the attachment for an example of substitution mapping.
The db.yaml is the substituting template which is imported to web.yaml.
The web.yaml has an abstract node template "database" which would be
substituted with db.yaml.
We want to understand is it mandatory to have templates imported for
substitution to work ? Does TOSCA spec says this ?
The use-case for us would be to have substitution mapping without importing the
template but to find the template from the already available service-templates
in the Database.
You could refer Section 2.10 in TOSCA simple yaml 1.0 for more information on
substitution mapping.
Regards,
DJ
-----Original Message-----
From: Tal Liron [mailto:[email protected]]
Sent: Thursday, May 25, 2017 10:32 PM
To: [email protected]
Subject: Re: Query related to substitution mapping
Hi DJ,
I'm not sure what you mean by "the substituting template". Actually, ARIA does
almost nothing with substitution templates right now, just parses, validates,
and stores the info. Indeed, if you refer to a node type there, it should be
expected that the current template would need to know of that type, possibly by
importing.
Could you provide a short example to clarify?
On Thu, May 25, 2017 at 5:32 AM, D Jayachandran <[email protected]
> wrote:
> Hi,
>
> The substitution mapping works in the latest APACHE ARIA code only if
> the substituting template is imported in the top-level template.
>
> This seems to be contradicting with the TOSCA specification where the
> substitution is expected to happen without the import (though not
> explicitly mentioned).
>
> We are looking at the possible ways to identify the appropriate node
> template without importing the substituting template. ( Possibly by
> going through already available service models for a substitutable
> entity )
>
> Do you have any plans to have substitution mapping work without having
> the template imported every time ?
> Do you have any feedback on this and if our understanding is correct ?
>
>
> Regards,
> DJ
>
>
>
>
--
Tal Liron
Senior Engineer
[email protected] | +1 (773) 828-9339
Cloudify | http://getcloudify.org
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