Explore Yang Language Extension Concept (summary for team)

• Confirm that we can extend the YANG language
  • e.g adding boolean values to attributes 
• *Origin may be an annotation or an extension
  • https://datatracker.ietf.org/doc/rfc8526/
  • we are looking for extension
• Candidates for extension (background information)
  • 1. provide references between models (CM handles)
  • 2. fine-grained configuration of cache
    • full cm-handle
    • YANg node (fragment)
    • attribute
  • 3. fine-grained control of notification
    • what do we actually notify when we change something**
  • 4. fine-grained access control

• • Check support in ODL parser for Yang language extensions

A/C

• Sample YANG language extension defined
  • can be applied to a standard model
  • model can be parsed by ODL. Java ODL model (SchemaContex) includes data defined by extension, see org.onap.cps.yang.YangTextSchemaSourceSetBuilder#generateSchemaContext)
  • data can be parsed by ODL
• Demo above using (groovy) test and debugging

Constraint:

• show that it's possible to return to the standard model***