tgc_revival: add tgc compute node and route (#15974)

Author: zli82016

mmv1/products/compute/NodeTemplate.yaml

@@ -39,6 +39,8 @@ async:
     resource_inside_response: false
 collection_url_key: 'items'
 custom_code:
+include_in_tgc_next: true
+tgc_include_handwritten_tests: true
 examples:
   - name: 'node_template_basic'
     primary_resource_id: 'template'

mmv1/products/compute/ResourcePolicy.yaml

@@ -38,6 +38,8 @@ async:
 collection_url_key: 'items'
 custom_code:
   constants: 'templates/terraform/constants/compute_resource_policy.go.tmpl'
+include_in_tgc_next: true
+tgc_include_handwritten_tests: true
 sweeper:
   url_substitutions:
     - region: "us-central1"

mmv1/products/compute/Route.yaml

@@ -68,9 +68,12 @@ custom_code:
   extra_schema_entry: 'templates/terraform/extra_schema_entry/route.tmpl'
   constants: 'templates/terraform/constants/compute_route.go.tmpl'
   decoder: 'templates/terraform/decoders/route.tmpl'
+  tgc_decoder: 'templates/tgc_next/decoders/compute_route.tmpl'
 error_retry_predicates:
 
   - 'transport_tpg.IsPeeringOperationInProgress'
+include_in_tgc_next: true
+tgc_include_handwritten_tests: true
 examples:
   - name: 'route_basic'
     primary_resource_id: 'default'
@@ -188,6 +191,7 @@ properties:
       - 'next_hop_vpn_tunnel'
       - 'next_hop_ilb'
     custom_expand: 'templates/terraform/custom_expand/route_instance.tmpl'
+    custom_tgc_expand: 'templates/terraform/custom_expand/resourceref_with_validation.go.tmpl'
     resource: 'Instance'
     imports: 'selfLink'
   - name: 'nextHopIp'

mmv1/products/compute/Router.yaml

@@ -44,6 +44,8 @@ custom_code:
   constants: 'templates/terraform/constants/router.go.tmpl'
 custom_diff:
   - 'resourceComputeRouterCustomDiff'
+include_in_tgc_next: true
+tgc_include_handwritten_tests: true
 sweeper:
   prefixes:
     - "swg-autogen-router" # Secure Web Proxy(SWP) auto-generated router prefix.

mmv1/templates/tgc_next/decoders/compute_route.tmpl

@@ -0,0 +1,17 @@
+if v, ok := res["nextHopInstance"]; ok {
+		val, err := tpgresource.ParseZonalFieldValue("instances", v.(string), "project", "next_hop_instance_zone", d, meta.(*transport_tpg.Config), true)
+		if err != nil {
+				return nil, nil, err
+		}
+		hclData["next_hop_instance_zone"] = val.Zone
+		res["nextHopInstance"] = val.RelativeLink()
+}
+
+// next_hop_ip is Computed + Optional and conflict with next_hop_ilb
+if _, ok := res["nextHopIp"]; ok {
+	if _, ok := res["nextHopIlb"]; ok {
+		delete(res, "nextHopIp")
+	}
+}
+
+return res, hclData, nil