Crate tosca_solver

This crate infers the relationships between TOSCA node templates when given a set of node templates and their requirements.

Each TOSCA requirement found on the node templates is encoded as a set of constraints, including:

• node and capability types
• the relationship’s valid_target_types
• node_filter constraints
• node_filter match expressions

solve() will return the nodes that match the requirements associated with a given set of nodes. By default this crate is exposed as a Python extension module and is used by Unfurl, but it can be used by any TOSCA 1.3 processor.

Structs

• Field
  Node field.
• Node
  A partial representations of a TOSCA node template (enough for solve())
• ToscaValue
  A TOSCA value. If a complex value or typed scalar, type_name will be set.

Enums

• Constraint
  Constraints used in node filters
• CriteriaTerm
  Represents the match criteria for a requirement.
• EntityRef
• FieldValue
  Value of a Node field.
• QueryType
• SimpleValue
  Simple TOSCA value

Functions

• solve
  Finds missing requirements for the given topology. (Main Python entry point)

Type Aliases

• Criteria
  Set of CriteriaTerms
• RequirementMatches
  HashMap mapping (source node name, requirement name) pairs to a list of (target node name, capability name) pairs.
• ToscaTypes
  HashMap mapping tosca type names to a list of ancestor types it inherits (including itsself)