Add fields to support stateful cookie-based affinity

mmv1/products/compute/BackendService.yaml

@@ -106,6 +106,12 @@ examples:
     vars:
       backend_service_name: 'backend-service'
       health_check_name: 'health-check'
+  - name: 'backend_service_stateful_session_affinity'
+    primary_resource_id: 'default'
+    min_version: 'beta'
+    vars:
+      backend_service_name: 'backend-service'
+      health_check_name: 'health-check'
   - name: 'backend_service_network_endpoint'
     primary_resource_id: 'default'
     min_version: 'beta'
@@ -1295,6 +1301,50 @@ properties:
       - 'GENERATED_COOKIE'
       - 'HEADER_FIELD'
       - 'HTTP_COOKIE'
+      - 'STRONG_COOKIE_AFFINITY'
+  - name: 'strongSessionAffinityCookie'
+    type: NestedObject
+    description: |
+      Describes the HTTP cookie used for stateful session affinity. This field is applicable and required if the sessionAffinity is set to STRONG_COOKIE_AFFINITY.
+    properties:
+      - name: 'ttl'
+        type: NestedObject
+        description: |
+          Lifetime of the cookie.
+        at_least_one_of:
+          - 'http_cookie.0.ttl'
+          - 'http_cookie.0.name'
+          - 'http_cookie.0.path'
+        properties:
+          - name: 'seconds'
+            type: Integer
+            description: |
+              Span of time at a resolution of a second.
+              Must be from 0 to 315,576,000,000 inclusive.
+            required: true
+          - name: 'nanos'
+            type: Integer
+            description: |
+              Span of time that's a fraction of a second at nanosecond
+              resolution. Durations less than one second are represented
+              with a 0 seconds field and a positive nanos field. Must
+              be from 0 to 999,999,999 inclusive.
+      - name: 'name'
+        type: String
+        description: |
+          Name of the cookie.
+        at_least_one_of:
+          - 'http_cookie.0.ttl'
+          - 'http_cookie.0.name'
+          - 'http_cookie.0.path'
+      - name: 'path'
+        type: String
+        description: |
+          Path to set for the cookie.
+        at_least_one_of:
+          - 'http_cookie.0.ttl'
+          - 'http_cookie.0.name'
+          - 'http_cookie.0.path'
   - name: 'timeoutSec'
     type: Integer
     description: |

mmv1/products/compute/RegionBackendService.yaml

@@ -96,6 +96,12 @@ examples:
     vars:
       region_backend_service_name: 'region-service'
       health_check_name: 'rbs-health-check'
+  - name: 'region_backend_service_ilb_stateful_session_affinity'
+    primary_resource_id: 'default'
+    min_version: 'beta'
+    vars:
+      region_backend_service_name: 'region-service'
+      health_check_name: 'rbs-health-check'
   - name: 'region_backend_service_balancing_mode'
     primary_resource_id: 'default'
     vars:
@@ -1151,6 +1157,50 @@ properties:
       - 'HEADER_FIELD'
       - 'HTTP_COOKIE'
       - 'CLIENT_IP_NO_DESTINATION'
+      - 'STRONG_COOKIE_AFFINITY'
+  - name: 'strongSessionAffinityCookie'
+    type: NestedObject
+    description: |
+      Describes the HTTP cookie used for stateful session affinity. This field is applicable and required if the sessionAffinity is set to STRONG_COOKIE_AFFINITY.
+    properties:
+      - name: 'ttl'
+        type: NestedObject
+        description: |
+          Lifetime of the cookie.
+        at_least_one_of:
+          - 'http_cookie.0.ttl'
+          - 'http_cookie.0.name'
+          - 'http_cookie.0.path'
+        properties:
+          - name: 'seconds'
+            type: Integer
+            description: |
+              Span of time at a resolution of a second.
+              Must be from 0 to 315,576,000,000 inclusive.
+            required: true
+          - name: 'nanos'
+            type: Integer
+            description: |
+              Span of time that's a fraction of a second at nanosecond
+              resolution. Durations less than one second are represented
+              with a 0 seconds field and a positive nanos field. Must
+              be from 0 to 999,999,999 inclusive.
+      - name: 'name'
+        type: String
+        description: |
+          Name of the cookie.
+        at_least_one_of:
+          - 'http_cookie.0.ttl'
+          - 'http_cookie.0.name'
+          - 'http_cookie.0.path'
+      - name: 'path'
+        type: String
+        description: |
+          Path to set for the cookie.
+        at_least_one_of:
+          - 'http_cookie.0.ttl'
+          - 'http_cookie.0.name'
+          - 'http_cookie.0.path'
   - name: 'connectionTrackingPolicy'
     type: NestedObject
     description: |

mmv1/templates/terraform/examples/backend_service_stateful_session_affinity.tf.tmpl

@@ -0,0 +1,26 @@
+resource "google_compute_backend_service" "{{$.PrimaryResourceId}}" {
+  provider = google-beta
+
+  name                  = "{{index $.Vars "backend_service_name"}}"
+  health_checks         = [google_compute_health_check.health_check.id]
+  load_balancing_scheme = "EXTERNAL_MANAGED"
+  locality_lb_policy    = "RING_HASH"
+  session_affinity      = "STRONG_COOKIE_AFFINITY"
+
+  strong_session_affinity_cookie {
+     ttl {
+       seconds = 11
+       nanos   = 1111
+     }
+     name = "mycookie"
+   }   
+}
+
+resource "google_compute_health_check" "health_check" {
+  provider = google-beta
+
+  name = "{{index $.Vars "health_check_name"}}"
+  http_health_check {
+    port = 80
+  }
+}

mmv1/templates/terraform/examples/region_backend_service_ilb_stateful_session_affinity.tf.tmpl

@@ -0,0 +1,27 @@
+resource "google_compute_region_backend_service" "{{$.PrimaryResourceId}}" {
+  provider = google-beta
+
+  region = "us-central1"
+  name = "{{index $.Vars "region_backend_service_name"}}"
+  health_checks = [google_compute_health_check.health_check.id]
+  load_balancing_scheme = "INTERNAL_MANAGED"
+  locality_lb_policy = "RING_HASH"
+  session_affinity = "STRONG_COOKIE_AFFINITY"
+  protocol = "HTTP"
+
+  strong_session_affinity_cookie {
+    ttl {
+      seconds = 11
+      nanos = 1111
+    }
+    name = "mycookie"
+  }  
+}
+
+resource "google_compute_health_check" "health_check" {
+  provider = google-beta
+  name               = "{{index $.Vars "health_check_name"}}"
+  http_health_check {
+    port = 80
+  }
+}