Fix updating the authorized_keys file

In https://gitlab.com/gitlab-org/gitlab/-/merge_requests/26913, we
merged a change that breaks updating the authorized_keys file. Sidekiq
converts symbol arguments to #perform into string arguments, and we
didn't take account of that. Now updating the authorized_keys file is
broken :S

This commit ensures we always treat the passed-in action argument as a
string, which fixes the issue.

app/workers/authorized_keys_worker.rb

@@ -3,7 +3,7 @@
 class AuthorizedKeysWorker
   include ApplicationWorker
 
-  PERMITTED_ACTIONS = [:add_key, :remove_key].freeze
+  PERMITTED_ACTIONS = %w[add_key remove_key].freeze
 
   feature_category :source_code_management
   urgency :high
@@ -13,11 +13,13 @@ class AuthorizedKeysWorker
   def perform(action, *args)
     return unless Gitlab::CurrentSettings.authorized_keys_enabled?
 
-    case action
-    when :add_key
+    case action.to_s
+    when 'add_key'
       authorized_keys.add_key(*args)
-    when :remove_key
+    when 'remove_key'
       authorized_keys.remove_key(*args)
+    else
+      raise "Unknown action: #{action.inspect}"
     end
   end
 

app/workers/gitlab_shell_worker.rb

@@ -13,7 +13,7 @@ class GitlabShellWorker # rubocop:disable Scalability/IdempotentWorker
     # enqueued in the previous release, so handle them here.
     #
     # See https://gitlab.com/gitlab-org/gitlab/-/issues/25095 for more details
-    if AuthorizedKeysWorker::PERMITTED_ACTIONS.include?(action)
+    if AuthorizedKeysWorker::PERMITTED_ACTIONS.include?(action.to_s)
       AuthorizedKeysWorker.new.perform(action, *arg)
 
       return

changelogs/unreleased/212178-fix-authorized-keys-worker.yml

+---
+title: Fix updating the authorized_keys file
+merge_request: 27798
+author:
+type: fixed

spec/workers/authorized_keys_worker_spec.rb

@@ -17,7 +17,7 @@ describe AuthorizedKeysWorker do
             expect(instance).to receive(:add_key).with('foo', 'bar')
           end
 
-          worker.perform(:add_key, 'foo', 'bar')
+          worker.perform('add_key', 'foo', 'bar')
         end
       end
 
@@ -27,15 +27,17 @@ describe AuthorizedKeysWorker do
             expect(instance).to receive(:remove_key).with('foo', 'bar')
           end
 
-          worker.perform(:remove_key, 'foo', 'bar')
+          worker.perform('remove_key', 'foo', 'bar')
         end
       end
 
       describe 'all other commands' do
-        it 'does nothing' do
+        it 'raises an error' do
           expect(Gitlab::AuthorizedKeys).not_to receive(:new)
 
-          worker.perform(:foo, 'bar', 'baz')
+          expect do
+            worker.perform('foo', 'bar', 'baz')
+          end.to raise_error('Unknown action: "foo"')
         end
       end
     end
@@ -48,7 +50,7 @@ describe AuthorizedKeysWorker do
       it 'does nothing' do
         expect(Gitlab::AuthorizedKeys).not_to receive(:new)
 
-        worker.perform(:add_key, 'foo', 'bar')
+        worker.perform('add_key', 'foo', 'bar')
       end
     end
   end

spec/workers/gitlab_shell_worker_spec.rb

@@ -12,7 +12,7 @@ describe GitlabShellWorker do
           expect(instance).to receive(:add_key).with('foo', 'bar')
         end
 
-        worker.perform(:add_key, 'foo', 'bar')
+        worker.perform('add_key', 'foo', 'bar')
       end
     end
 
@@ -22,7 +22,7 @@ describe GitlabShellWorker do
           expect(instance).to receive(:remove_key).with('foo', 'bar')
         end
 
-        worker.perform(:remove_key, 'foo', 'bar')
+        worker.perform('remove_key', 'foo', 'bar')
       end
     end
 
@@ -32,7 +32,7 @@ describe GitlabShellWorker do
           expect(instance).to receive(:foo).with('bar', 'baz')
         end
 
-        worker.perform(:foo, 'bar', 'baz')
+        worker.perform('foo', 'bar', 'baz')
       end
     end
   end