fix(domain): workspace assignments should only care about managed resources

.changes/unreleased/fixed-20250108-115142.yaml

@@ -0,0 +1,7 @@
+kind: fixed
+body: |
+  `Provider produced inconsistent result after apply` error appears when using `fabric_domain_workspace_assignments` multiple times due to enforce assignments based only on TF configuration and ignoring the real state on the Fabric side.
+  Resource must only manage TF provided configuration and ignore any configuration provided outside TF.
+time: 2025-01-08T11:51:42.1488752-08:00
+custom:
+  Issue: "174"

docs/resources/domain_workspace_assignments.md

@@ -43,7 +43,7 @@ resource "fabric_domain_workspace_assignments" "example" {
 ### Required
 
 - `domain_id` (String) The Domain ID. Changing this forces a new resource to be created.
-- `workspace_ids` (Set of String) The list of Workspaces.
+- `workspace_ids` (Set of String) The set of Workspace IDs.
 
 ### Optional
 

internal/services/domain/models_resource_domain_workspace_assignments.go

@@ -21,11 +21,11 @@ type resourceDomainWorkspaceAssignmentsModel struct {
 	Timeouts     timeouts.Value   `tfsdk:"timeouts"`
 }
 
-func (to *resourceDomainWorkspaceAssignmentsModel) setWorkspaces(ctx context.Context, from []fabadmin.DomainWorkspace) diag.Diagnostics {
-	elements := []customtypes.UUID{}
+func (to *resourceDomainWorkspaceAssignmentsModel) setWorkspaces(ctx context.Context, from []string) diag.Diagnostics {
+	elements := make([]customtypes.UUID, 0, len(from))
 
-	for _, entity := range from {
-		elements = append(elements, customtypes.NewUUIDPointerValue(entity.ID))
+	for _, element := range from {
+		elements = append(elements, customtypes.NewUUIDValue(element))
 	}
 
 	values, diags := types.SetValueFrom(ctx, customtypes.UUIDType{}, elements)
@@ -69,15 +69,14 @@ func (to *requestDeleteDomainWorkspaceAssignments) set(ctx context.Context, from
 }
 
 func getWorkspaceIDs(ctx context.Context, from resourceDomainWorkspaceAssignmentsModel) ([]string, diag.Diagnostics) {
-	values := []string{}
-
 	elements := make([]customtypes.UUID, 0, len(from.WorkspaceIDs.Elements()))
 
-	diags := from.WorkspaceIDs.ElementsAs(ctx, &elements, false)
-	if diags.HasError() {
+	if diags := from.WorkspaceIDs.ElementsAs(ctx, &elements, false); diags.HasError() {
 		return nil, diags
 	}
 
+	values := make([]string, 0, len(elements))
+
 	for _, element := range elements {
 		values = append(values, element.ValueString())
 	}

internal/services/domain/resource_domain_workspace_assignments.go

@@ -6,6 +6,7 @@ package domain
 import (
 	"context"
 	"fmt"
+	"slices"
 
 	"github.com/hashicorp/terraform-plugin-framework-timeouts/resource/timeouts"
 	"github.com/hashicorp/terraform-plugin-framework/diag"
@@ -62,7 +63,7 @@ func (r *resourceDomainWorkspaceAssignments) Schema(ctx context.Context, _ resou
 				},
 			},
 			"workspace_ids": schema.SetAttribute{
-				MarkdownDescription: "The list of Workspaces.",
+				MarkdownDescription: "The set of Workspace IDs.",
 				Required:            true,
 				ElementType:         customtypes.UUIDType{},
 			},
@@ -309,15 +310,13 @@ func (r *resourceDomainWorkspaceAssignments) Delete(ctx context.Context, req res
 func (r *resourceDomainWorkspaceAssignments) diffWorkspaces(ctx context.Context, slice1, slice2 types.Set) (types.Set, diag.Diagnostics) {
 	s1 := make([]customtypes.UUID, 0, len(slice1.Elements()))
 
-	diags := slice1.ElementsAs(ctx, &s1, false)
-	if diags.HasError() {
+	if diags := slice1.ElementsAs(ctx, &s1, false); diags.HasError() {
 		return types.SetNull(customtypes.UUIDType{}), diags
 	}
 
 	s2 := make([]customtypes.UUID, 0, len(slice1.Elements()))
 
-	diags = slice2.ElementsAs(ctx, &s2, false)
-	if diags.HasError() {
+	if diags := slice2.ElementsAs(ctx, &s2, false); diags.HasError() {
 		return types.SetNull(customtypes.UUIDType{}), diags
 	}
 
@@ -350,5 +349,24 @@ func (r *resourceDomainWorkspaceAssignments) list(ctx context.Context, model *re
 		return diags
 	}
 
-	return model.setWorkspaces(ctx, respList)
+	workspaceIDs, diags := getWorkspaceIDs(ctx, *model)
+	if diags.HasError() {
+		return diags
+	}
+
+	elements := make([]string, 0, len(respList))
+
+	for _, element := range respList {
+		elements = append(elements, *element.ID)
+	}
+
+	var values []string
+
+	for _, workspaceID := range workspaceIDs {
+		if slices.Contains(elements, workspaceID) {
+			values = append(values, workspaceID)
+		}
+	}
+
+	return model.setWorkspaces(ctx, values)
 }