Add support for evaluationMissingData in AlertPolicy

mmv1/products/monitoring/api.yaml

@@ -347,6 +347,16 @@ objects:
                      The absolute number of time series
                      that must fail the predicate for the
                      condition to be triggered.
+              - !ruby/object:Api::Type::Enum
+                name: evaluationMissingData
+                description: |
+                  A condition control that determines how
+                  metric-threshold conditions are evaluated when
+                  data stops arriving.
+                values:
+                  - :EVALUATION_MISSING_DATA_INACTIVE
+                  - :EVALUATION_MISSING_DATA_ACTIVE
+                  - :EVALUATION_MISSING_DATA_NO_OP
            - !ruby/object:Api::Type::NestedObject
              name: conditionThreshold
              description: |
@@ -734,6 +744,16 @@ objects:
                   resource labels, and metric labels. This
                   field may not exceed 2048 Unicode characters
                   in length.
+              - !ruby/object:Api::Type::Enum
+                name: evaluationMissingData
+                description: |
+                  A condition control that determines how
+                  metric-threshold conditions are evaluated when
+                  data stops arriving.
+                values:
+                  - :EVALUATION_MISSING_DATA_INACTIVE
+                  - :EVALUATION_MISSING_DATA_ACTIVE
+                  - :EVALUATION_MISSING_DATA_NO_OP
            - !ruby/object:Api::Type::String
              name: displayName
              required: true

mmv1/products/monitoring/terraform.yaml

@@ -25,6 +25,13 @@ overrides: !ruby/object:Overrides::ResourceOverrides
         primary_resource_id: "alert_policy"
         vars:
           alert_policy_display_name: "My Alert Policy"
+      - !ruby/object:Provider::Terraform::Examples
+        # skipping tests because the API is full of race conditions
+        skip_test: true
+        name: "monitoring_alert_policy_evaluation_missing_data"
+        primary_resource_id: "alert_policy"
+        vars:
+          alert_policy_display_name: "My Alert Policy"
     custom_code: !ruby/object:Provider::Terraform::CustomCode
       custom_import: templates/terraform/custom_import/self_link_as_name.erb
       post_create: templates/terraform/post_create/set_computed_name.erb

mmv1/templates/terraform/examples/monitoring_alert_policy_evaluation_missing_data.tf.erb

@@ -0,0 +1,21 @@
+resource "google_monitoring_alert_policy" "<%= ctx[:primary_resource_id] %>" {
+  display_name = "<%= ctx[:vars]["alert_policy_display_name"] %>"
+  combiner     = "OR"
+  conditions {
+    display_name = "test condition"
+    condition_threshold {
+      filter     = "metric.type=\"compute.googleapis.com/instance/disk/write_bytes_count\" AND resource.type=\"gce_instance\""
+      duration   = "60s"
+      comparison = "COMPARISON_GT"
+      aggregations {
+        alignment_period   = "60s"
+        per_series_aligner = "ALIGN_RATE"
+      }
+      evaluation_missing_data = "EVALUATION_MISSING_DATA_INACTIVE"
+    }
+  }
+
+  user_labels = {
+    foo = "bar"
+  }
+}