Create Kubernetes based on Application Templates

3 files changed, 53 insertions, 6 deletions

diff --git a/app/models/concerns/deployment_platform.rb b/app/models/concerns/deployment_platform.rb
new file mode 100644
index 00000000000..e1373455e98
--- /dev/null
+++ b/app/models/concerns/deployment_platform.rb
@@ -0,0 +1,47 @@
+module DeploymentPlatform
+  def deployment_platform
+    @deployment_platform ||= find_cluster_platform_kubernetes
+    @deployment_platform ||= find_kubernetes_service_integration
+    @deployment_platform ||= build_cluster_and_deployment_platform
+  end
+
+  private
+
+  def find_cluster_platform_kubernetes
+    clusters.find_by(enabled: true)&.platform_kubernetes
+  end
+
+  def find_kubernetes_service_integration
+    services.deployment.reorder(nil).find_by(active: true)
+  end
+
+  def build_cluster_and_deployment_platform
+    return unless kubernetes_service_template
+
+    cluster = ::Clusters::Cluster.create(cluster_attributes_from_service_template)
+    cluster.platform_kubernetes if cluster.persisted?
+  end
+
+  def kubernetes_service_template
+    @kubernetes_service_template ||= KubernetesService.active.find_by_template
+  end
+
+  def cluster_attributes_from_service_template
+    {
+      name: 'kubernetes-template',
+      projects: [self],
+      provider_type: :user,
+      platform_type: :kubernetes,
+      platform_kubernetes_attributes: platform_kubernetes_attributes_from_service_template
+    }
+  end
+
+  def platform_kubernetes_attributes_from_service_template
+    {
+      api_url: kubernetes_service_template.api_url,
+      ca_pem: kubernetes_service_template.ca_pem,
+      token: kubernetes_service_template.token,
+      namespace: kubernetes_service_template.namespace
+    }
+  end
+end
diff --git a/app/models/project.rb b/app/models/project.rb
index 9c0bbf697e2..5d6c1b30587 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -19,6 +19,7 @@ class Project < ActiveRecord::Base
   include Routable
   include GroupDescendant
   include Gitlab::SQL::Pattern
+  include DeploymentPlatform
 
   extend Gitlab::ConfigHelper
   extend Gitlab::CurrentSettings
@@ -904,12 +905,6 @@ class Project < ActiveRecord::Base
     @ci_service ||= ci_services.reorder(nil).find_by(active: true)
   end
 
-  # TODO: This will be extended for multiple enviroment clusters
-  def deployment_platform
-    @deployment_platform ||= clusters.find_by(enabled: true)&.platform_kubernetes
-    @deployment_platform ||= services.where(category: :deployment).reorder(nil).find_by(active: true)
-  end
-
   def monitoring_services
     services.where(category: :monitoring)
   end
diff --git a/app/models/service.rb b/app/models/service.rb
index 176b472e724..24ba3039707 100644
--- a/app/models/service.rb
+++ b/app/models/service.rb
@@ -44,6 +44,7 @@ class Service < ActiveRecord::Base
   scope :pipeline_hooks, -> { where(pipeline_events: true, active: true) }
   scope :wiki_page_hooks, -> { where(wiki_page_events: true, active: true) }
   scope :external_issue_trackers, -> { issue_trackers.active.without_defaults }
+  scope :deployment, -> { where(category: 'deployment') }
 
   default_value_for :category, 'common'
 
@@ -271,6 +272,10 @@ class Service < ActiveRecord::Base
     nil
   end
 
+  def self.find_by_template
+    find_by(template: true)
+  end
+
   private
 
   def cache_project_has_external_issue_tracker