Extend Cluster Applications to install GitLab Runner to Kubernetes cluster

1 files changed, 68 insertions, 0 deletions

diff --git a/app/models/clusters/applications/runner.rb b/app/models/clusters/applications/runner.rb
new file mode 100644
index 00000000000..7adf1663c35
--- /dev/null
+++ b/app/models/clusters/applications/runner.rb
@@ -0,0 +1,68 @@
+module Clusters
+  module Applications
+    class Runner < ActiveRecord::Base
+      VERSION = '0.1.13'.freeze
+
+      self.table_name = 'clusters_applications_runners'
+
+      include ::Clusters::Concerns::ApplicationCore
+      include ::Clusters::Concerns::ApplicationStatus
+      include ::Clusters::Concerns::ApplicationData
+
+      belongs_to :runner, class_name: 'Ci::Runner', foreign_key: :runner_id
+      delegate :project, to: :cluster
+
+      default_value_for :version, VERSION
+
+      def chart
+        "#{name}/gitlab-runner"
+      end
+
+      def repository
+        'https://charts.gitlab.io'
+      end
+
+      def values
+        content_values.to_yaml
+      end
+
+      def install_command
+        Gitlab::Kubernetes::Helm::InstallCommand.new(
+          name,
+          chart: chart,
+          values: values,
+          repository: repository
+        )
+      end
+
+      private
+
+      def ensure_runner
+        runner || create_and_assign_runner
+      end
+
+      def create_and_assign_runner
+        transaction do
+          project.runners.create!(name: 'kubernetes-cluster', tag_list: %w(kubernetes cluster)).tap do |runner|
+            update!(runner_id: runner.id)
+          end
+        end
+      end
+
+      def gitlab_url
+        Gitlab::Routing.url_helpers.root_url(only_path: false)
+      end
+
+      def specification
+        {
+          "gitlabUrl" => gitlab_url,
+          "runnerToken" => ensure_runner.token
+        }
+      end
+
+      def content_values
+        specification.merge(YAML.load_file(chart_values_file))
+      end
+    end
+  end
+end