Semantic Validation: requirement node suggested by semantic validation is rejected as valid in following validation

[jesus-gorronogoitia]

First issue

In snow.aadm, the template snow-mysql shows a wrong node snow/snow-vm for requirement host. When saved in model:
snow.v2.snow_v2.aadm_first_model.ttl.txt

the KB Reasoner reports the error and suggest three valid nodes.

Then, the user select one of those, say snow/docker-host@v1.0, and tries to save again the model:
snow.v2.snow_v2.aadm_second_model.ttl.txt
,getting an unexpected validation error:

Cannot find Template: snow/docker-host@v1.0: Requirement_25

If host requirement node snow/docker-host@v1.0 was suggested by KB in first validation, it should be valid in second, so last error should not be reported, shouldn't it?

Second issue

Content assistance for first model, suggests for nodes satisfying the host requirement the following ones:

but the versions of snow-vm and test-vm are not of type DockerHost, but Openstack.VM, therefore not satisfying the requirement. Could you please check the API that returns these candidate nodes for a requirement?

[zoevas]

About the first issue:

:Parameter_132
  rdf:type exchange:Parameter ;
  exchange:name "node" ;
  exchange:value 'snow/docker-host@v1.0' ;
  .

in the snow.v2.snow_v2.aadm_second_model.ttl.txt the value is wrong..There is no docker-host with version 1, but it should be snow/snow-docker-host@v1.0 because the template was saved with snow-docker-host name.

[jesus-gorronogoitia]

Openstack.VM also provides Compute capability and for that reason KB is suggesting its instances. By defining the capability type:

capability_types:
	sodalite.capabilities.DockerCompute:
		derived_from: tosca.capabilities.Compute

And use it in DockerHost host capability definition:

capabilities:  
	host:  
		type: sodalite.capabilities.DockerCompute
		valid_source_types:[docker/sodalite.nodes.DockerizedComponent] 

and in DockerComponent host requirement defintion:

host:
  capability: sodalite.capabilities.DockerCompute
  node: docker/sodalite.nodes.DockerHost
  relationship: tosca.relationships.HostedOn

This issue does away, as then only DockerHost instances are suggested by the KB where to host DockerComponent instances. The use of tosca.capabilities.Compute is quite generic. Using Compute the KB returns both instances of Openstack.VM and DockerHost.