Support a --rolling option for traefik reboots

lib/mrsk/cli/traefik.rb

@@ -9,12 +9,17 @@ class Mrsk::Cli::Traefik < Mrsk::Cli::Base
     end
   end
 
+  method_option :rolling, type: :boolean, default: false
   desc "reboot", "Reboot Traefik on servers (stop container, remove container, start new container)"
   def reboot
     mutating do
-      stop
-      remove_container
-      boot
+      on(MRSK.traefik_hosts, in: options[:rolling] ? :sequence : :parallel) do
+        execute *MRSK.auditor.record("Rebooted traefik"), verbosity: :debug
+        execute *MRSK.traefik.stop, raise_on_non_zero_exit: false
+        execute *MRSK.traefik.remove_container
+        execute *MRSK.registry.login
+        execute *MRSK.traefik.run, raise_on_non_zero_exit: false
+      end
     end
   end
 

test/cli/traefik_test.rb

@@ -9,11 +9,18 @@ class CliTraefikTest < CliTestCase
   end
 
   test "reboot" do
-    Mrsk::Cli::Traefik.any_instance.expects(:stop)
-    Mrsk::Cli::Traefik.any_instance.expects(:remove_container)
-    Mrsk::Cli::Traefik.any_instance.expects(:boot)
+    run_command("reboot").tap do |output|
+      assert_match "docker container stop traefik", output
+      assert_match "docker container prune --force --filter label=org.opencontainers.image.title=Traefik", output
+      assert_match "docker login", output
+      assert_match "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" #{Mrsk::Commands::Traefik::DEFAULT_IMAGE} --providers.docker --log.level=\"DEBUG\"", output
+    end
+  end
 
-    run_command("reboot")
+  test "reboot --rolling" do
+    run_command("reboot", "--rolling").tap do |output|
+      assert_match "Running docker container prune --force --filter label=org.opencontainers.image.title=Traefik on 1.1.1.1", output.lines[2]
+    end
   end
 
   test "start" do