From cf88da111c2f8e45ad4bf3e953217a5e1f5a9511 Mon Sep 17 00:00:00 2001
From: Georg Gadinger <nilsding@nilsding.org>
Date: Sat, 24 Dec 2022 22:43:27 +0000
Subject: [PATCH] admin/dashboard: add basic sidekiq stats and warn if sidekiq
 is not running

---
 app/controllers/admin/dashboard_controller.rb |  9 +++++-
 app/views/admin/dashboard/index.html.haml     | 28 ++++++++++++++++++-
 2 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/app/controllers/admin/dashboard_controller.rb b/app/controllers/admin/dashboard_controller.rb
index e1fcb69b..9d99570c 100644
--- a/app/controllers/admin/dashboard_controller.rb
+++ b/app/controllers/admin/dashboard_controller.rb
@@ -1,7 +1,14 @@
 # frozen_string_literal: true
 
+require "sidekiq/api"
+
 class Admin::DashboardController < ApplicationController
   before_action :authenticate_user!
 
-  def index; end
+  def index
+    @sidekiq = {
+      processes: Sidekiq::ProcessSet.new,
+      stats:     Sidekiq::Stats.new
+    }
+  end
 end
diff --git a/app/views/admin/dashboard/index.html.haml b/app/views/admin/dashboard/index.html.haml
index b2518836..26130d1f 100644
--- a/app/views/admin/dashboard/index.html.haml
+++ b/app/views/admin/dashboard/index.html.haml
@@ -1,5 +1,31 @@
 .card
   .card-body
-    No dashboard content yet!
+    %h2
+      Sidekiq
+
+    %a{ href: sidekiq_web_path } View dashboard
+
+    - unless @sidekiq[:processes].count.positive?
+      .alert.alert-danger{ role: :alert }
+        %strong There are no Sidekiq processes running.
+        Background jobs will not be processed.
+        %br
+        To fix this, run
+        %tt RAILS_ENV=#{Rails.env} bundle exec sidekiq
+
+    %table.table
+      %tbody
+        %tr
+          %th Processes
+          %td= @sidekiq[:processes].count
+        %tr
+          %th Enqueued
+          %td= @sidekiq[:stats].enqueued
+        %tr
+          %th Retries
+          %td= @sidekiq[:stats].retry_size
+        %tr
+          %th Dead
+          %td= @sidekiq[:stats].dead_size
 
 - parent_layout "admin"