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Matthew Rutkowski edited comment on TOSCA-190 at 10/14/14 4:18 PM:
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To extend this to include capabilities we could express it this way:
mysql:
type: tosca.nodes.DBMS.MySQL
properties:
# omitted here for sake of brevity
requirements:
- host: tosca.nodes.Compute
target_filter:
# node innate
properties:
- num_cpus: { in_range: [ 1, 4 ] }
- mem_size: { greater_or_equal: 2 }
- os_arch: { equal: x86_64}
- os_type: { equal: linux}
- os_distribution: { equal: ubuntu}
capability:
- tosca.capabilities.encryption
properties:
algorithm: aes
keylength: 128
- tosca.capabilities.foo
properties:
x: y
was (Author: mrutkows):
To extend this to include capabilities we could express it this way:
> Fix grammar for "Constraints" on a Target node of a requirement (Chapter 11)
> -----------------------------------------------------------------------------
>
> Key: TOSCA-190
> URL: https://issues.oasis-open.org/browse/TOSCA-190
> Project: OASIS Topology and Orchestration Specification for Cloud Applications (TOSCA) TC
> Issue Type: Task
> Components: Profile-YAML
> Affects Versions: CSD03
> Reporter: Matthew Rutkowski
> Assignee: Thomas Spatzier
> Priority: Critical
>
> Section 11 of WD03, Rev05 has the following example which shows constraints on a requirement. The intent is to constrain the properties used for finding/matching the Target (Compute) node of a relationship. If we still want to allow this, we have no grammar for doing this and need one. Also, the grammar implied by the example perhaps is not sufficient to indicate that these constraints are on the properties of the Target node.
> Here is the example as written:
> node_templates:
> mysql:
> type: tosca.nodes.DBMS.MySQL
> properties:
> # omitted here for sake of brevity
> requirements:
> - host: tosca.nodes.Compute
> constraints:
> - num_cpus: { in_range: [ 1, 4 ] }
> - mem_size: { greater_or_equal: 2 }
> - os_arch: x86_64
> - os_type: linux
> - os_distribution: ubuntu
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