1 files changed, 59 insertions, 0 deletions
diff --git a/lib/gitlab/kubernetes/kubeconfig/template.rb b/lib/gitlab/kubernetes/kubeconfig/template.rb
new file mode 100644
index 00000000000..da0861ee86a
--- /dev/null
+++ b/lib/gitlab/kubernetes/kubeconfig/template.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Kubernetes
+    module Kubeconfig
+      class Template
+        ENTRIES = {
+          cluster: Gitlab::Kubernetes::Kubeconfig::Entry::Cluster,
+          user: Gitlab::Kubernetes::Kubeconfig::Entry::User,
+          context: Gitlab::Kubernetes::Kubeconfig::Entry::Context
+        }.freeze
+
+        def initialize
+          @clusters = []
+          @users = []
+          @contexts = []
+        end
+
+        def valid?
+          contexts.present?
+        end
+
+        def add_cluster(**args)
+          clusters << new_entry(:cluster, **args)
+        end
+
+        def add_user(**args)
+          users << new_entry(:user, **args)
+        end
+
+        def add_context(**args)
+          contexts << new_entry(:context, **args)
+        end
+
+        def to_h
+          {
+            apiVersion: 'v1',
+            kind: 'Config',
+            clusters: clusters.map(&:to_h),
+            users: users.map(&:to_h),
+            contexts: contexts.map(&:to_h)
+          }
+        end
+
+        def to_yaml
+          YAML.dump(to_h.deep_stringify_keys)
+        end
+
+        private
+
+        attr_reader :clusters, :users, :contexts
+
+        def new_entry(entry, **args)
+          ENTRIES.fetch(entry).new(**args)
+        end
+      end
+    end
+  end
+end