Introduce Knative Serverless Tab

2 files changed, 44 insertions, 2 deletions

diff --git a/app/models/clusters/applications/knative.rb b/app/models/clusters/applications/knative.rb
index c0aaa8dce20..168a24da738 100644
--- a/app/models/clusters/applications/knative.rb
+++ b/app/models/clusters/applications/knative.rb
@@ -15,6 +15,9 @@ module Clusters
       include ::Clusters::Concerns::ApplicationVersion
       include ::Clusters::Concerns::ApplicationData
       include AfterCommitQueue
+      include ReactiveCaching
+
+      self.reactive_cache_key = ->(knative) { [knative.class.model_name.singular, knative.id] }
 
       state_machine :status do
         before_transition any => [:installed] do |application|
@@ -29,6 +32,8 @@ module Clusters
 
       validates :hostname, presence: true, hostname: true
 
+      scope :for_cluster, -> (cluster) { where(cluster: cluster) }
+
       def chart
         'knative/knative'
       end
@@ -55,12 +60,39 @@ module Clusters
         ClusterWaitForIngressIpAddressWorker.perform_async(name, id)
       end
 
+      def client
+        cluster.kubeclient.knative_client
+      end
+
+      def services
+        with_reactive_cache do |data|
+          data[:services]
+        end
+      end
+
+      def calculate_reactive_cache
+        { services: read_services }
+      end
+
       def ingress_service
         cluster.kubeclient.get_service('knative-ingressgateway', 'istio-system')
       end
 
-      def client
-        cluster.platform_kubernetes.kubeclient.knative_client
+      def services_for(ns: namespace)
+        return unless services
+        return [] unless ns
+
+        services.select do |service|
+          service.dig('metadata', 'namespace') == ns
+        end
+      end
+
+      private
+
+      def read_services
+        client.get_services.as_json
+      rescue Kubeclient::ResourceNotFoundError
+        []
       end
     end
   end
diff --git a/app/models/clusters/cluster.rb b/app/models/clusters/cluster.rb
index c9bd1728dbd..7fe43cd2de0 100644
--- a/app/models/clusters/cluster.rb
+++ b/app/models/clusters/cluster.rb
@@ -93,6 +93,16 @@ module Clusters
       where('NOT EXISTS (?)', subquery)
     end
 
+    scope :with_knative_installed, -> { joins(:application_knative).merge(Clusters::Applications::Knative.installed) }
+
+    scope :preload_knative, -> {
+      preload(
+        :kubernetes_namespace,
+        :platform_kubernetes,
+        :application_knative
+      )
+    }
+
     def self.ancestor_clusters_for_clusterable(clusterable, hierarchy_order: :asc)
       hierarchy_groups = clusterable.ancestors_upto(hierarchy_order: hierarchy_order).eager_load(:clusters)
       hierarchy_groups = hierarchy_groups.merge(current_scope) if current_scope