Expose `AttributePath` function in `internal/fromtftypes/attribute_path.go`

[EspenAlbert]

Module version

github.com/hashicorp/terraform-plugin-framework v1.14.1

Use-cases

Support converting tftypes.AttributePath to path.Path.

Attempted Solutions

Copy the code and modify the schema interface: func AttributePath(ctx context.Context, tfType *tftypes.AttributePath, schema TPFSchema) (path.Path, diag.Diagnostics) {.
Allthough this workaround works, we rather have access directly to the method instead of having to update a THIRD PARTY NOTICES file and maintain this extra file.

Proposal

Expose the func AttributePath(ctx context.Context, tfType *tftypes.AttributePath, schema fwschema.Schema) (path.Path, diag.Diagnostics) { or a simplified version that converts tftypes.AttributePath to path.Path.

References

• Discussion: Best practices for handling “known after apply” plan verbosity in TPF resources

More Background Context

We are trying to reduce the verbosity users get in the plan diff.
For some attributes we cannot use the UseStateForUnknown plan modifier directly. We need extra logic to say: Only use state when related attributes are unchanged.
Therefore, in our plan modifier logic we use the Diff method on tfsdk.State.Raw to find changes between the state and plan.

func NewPlanModifyDiffer(ctx context.Context, state *tfsdk.State, plan *tfsdk.Plan, diags *diag.Diagnostics, schema conversion.TPFSchema) *PlanModifyDiffer {
 diffStatePlan, err := state.Raw.Diff(plan.Raw) // returns []tftypes.ValueDiff, error

The response from this diff is a []tftypes.ValueDiff:

type ValueDiff struct {
 Path *AttributePath // need to convert this to path.Path
 Value1 *Value
 Value2 *Value
}

We are later using these diffs to find AttributeChanges which we query to find changed attributes and based on logic we replace the Unknown value with the state value (example).
For any operation on the plan we want to use the tfsdk.Plan methods that requires a path.Path (2nd argument):

• func (p Plan) GetAttribute(ctx context.Context, path path.Path, target interface{})
• func (p *Plan) SetAttribute(ctx context.Context, path path.Path, val interface{}) diag.Diagnostics

[EspenAlbert]

Hi again.
Adding another function related, that seems missing from the terraform-plugin-testing
func PathFromString(pathStr string) tfjsonpath.Path {:

• see example implementation