Add HTTPS frontend with SNEG example

modules/net-glb/README.md

@@ -438,6 +438,46 @@ module "glb-0" {
 # tftest modules=1 resources=5
 ```
 
+Serverless NEGs don't use the port name but it should be set to `http`. An HTTPS frontend requires the protocol to be set to `HTTPS`, and the port name field will infer this value if omitted so you need to set it explicitly:
+
+```hcl
+module "glb-0" {
+  source     = "./fabric/modules/net-glb"
+  project_id = "myprj"
+  name       = "glb-test-0"
+  backend_service_configs = {
+    default = {
+      backends = [
+        { backend = "neg-0" }
+      ]
+      health_checks = []
+      port_name     = "http"
+    }
+  }
+  # with a single serverless NEG the implied default health check is not needed
+  health_check_configs = {}
+  neg_configs = {
+    neg-0 = {
+      cloudrun = {
+        region = "europe-west8"
+        target_service = {
+          name = "hello"
+        }
+      }
+    }
+  }
+  protocol = "HTTPS"
+  ssl_certificates = {
+    managed_configs = {
+      default = {
+        domains = ["glb-test-0.example.org"]
+      }
+    }
+  }
+}
+# tftest modules=1 resources=6 inventory=https-sneg.yaml
+```
+
 ### URL Map
 
 The module exposes the full URL map resource configuration, with some minor changes to the interface to decrease verbosity, and support for aliasing backend services via keys.

tests/modules/net_glb/examples/https-sneg.yaml

@@ -0,0 +1,35 @@
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+values:
+  module.glb-0.google_compute_backend_service.default["default"]:
+    port_name: http
+    protocol: HTTPS
+  module.glb-0.google_compute_global_forwarding_rule.default:
+    load_balancing_scheme: EXTERNAL
+    port_range: '443'
+  module.glb-0.google_compute_region_network_endpoint_group.serverless["neg-0"]:
+    cloud_run:
+    - service: hello
+      tag: null
+      url_mask: null
+
+counts:
+  google_compute_backend_service: 1
+  google_compute_global_forwarding_rule: 1
+  google_compute_managed_ssl_certificate: 1
+  google_compute_region_network_endpoint_group: 1
+  google_compute_target_https_proxy: 1
+  google_compute_url_map: 1
+