3 files changed, 41 insertions, 0 deletions
diff --git a/app/channels/application_cable/channel.rb b/app/channels/application_cable/channel.rb
new file mode 100644
index 00000000000..9aec2305390
--- /dev/null
+++ b/app/channels/application_cable/channel.rb
@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module ApplicationCable
+  class Channel < ActionCable::Channel::Base
+  end
+end
diff --git a/app/channels/application_cable/connection.rb b/app/channels/application_cable/connection.rb
new file mode 100644
index 00000000000..87c833f3593
--- /dev/null
+++ b/app/channels/application_cable/connection.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module ApplicationCable
+  class Connection < ActionCable::Connection::Base
+    identified_by :current_user
+
+    def connect
+      self.current_user = find_user_from_session_store
+    end
+
+    private
+
+    def find_user_from_session_store
+      session = ActiveSession.sessions_from_ids([session_id]).first
+      Warden::SessionSerializer.new('rack.session' => session).fetch(:user)
+    end
+
+    def session_id
+      Rack::Session::SessionId.new(cookies[Gitlab::Application.config.session_options[:key]])
+    end
+  end
+end
diff --git a/app/channels/issues_channel.rb b/app/channels/issues_channel.rb
new file mode 100644
index 00000000000..5f3909b7716
--- /dev/null
+++ b/app/channels/issues_channel.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+class IssuesChannel < ApplicationCable::Channel
+  def subscribed
+    project = Project.find_by_full_path(params[:project_path])
+    return reject unless project
+
+    issue = project.issues.find_by_iid(params[:iid])
+    return reject unless issue && Ability.allowed?(current_user, :read_issue, issue)
+
+    stream_for issue
+  end
+end