Handle empty instance_families (#236)

* handle empty instance_families in node template

* add check for gpu too

* PR review

Makefile

@@ -5,8 +5,8 @@ default: build
 init-examples:
 	@echo "==> Creating symlinks for example/ projects to terraform-provider-castai binary"; \
 	TF_PROVIDER_FILENAME=terraform-provider-castai; \
-	GOOS=`go tool dist env | awk -F'=' '/^GOOS/ { print $$2}' | tr -d '"'`; \
-	GOARCH=`go tool dist env | awk -F'=' '/^GOARCH/ { print $$2}' | tr -d '"'`; \
+	GOOS=`go tool dist env | awk -F'=' '/^GOOS/ { print $$2}' | tr -d '";'`; \
+	GOARCH=`go tool dist env | awk -F'=' '/^GOARCH/ { print $$2}' | tr -d '";'`; \
 	for examples in examples/eks examples/gke examples/aks ; do \
 		for tfproject in $$examples/* ; do \
 			TF_PROJECT_PLUGIN_PATH="$${tfproject}/terraform.d/plugins/registry.terraform.io/castai/castai/0.0.0-local/$${GOOS}_$${GOARCH}"; \

castai/resource_node_template.go

@@ -952,10 +952,16 @@ func toTemplateConstraints(obj map[string]any) *sdk.NodetemplatesV1TemplateConst
 		out.FallbackRestoreRateSeconds = toPtr(int32(v))
 	}
 	if v, ok := obj[FieldNodeTemplateGpu].([]any); ok && len(v) > 0 {
-		out.Gpu = toTemplateConstraintsGpuConstraints(v[0].(map[string]any))
+		val, ok := v[0].(map[string]any)
+		if ok {
+			out.Gpu = toTemplateConstraintsGpuConstraints(val)
+		}
 	}
 	if v, ok := obj[FieldNodeTemplateInstanceFamilies].([]any); ok && len(v) > 0 {
-		out.InstanceFamilies = toTemplateConstraintsInstanceFamilies(v[0].(map[string]any))
+		val, ok := v[0].(map[string]any)
+		if ok {
+			out.InstanceFamilies = toTemplateConstraintsInstanceFamilies(val)
+		}
 	}
 	if v, ok := obj[FieldNodeTemplateMaxCpu].(int); ok && v != 0 {
 		out.MaxCpu = toPtr(int32(v))