Add pagination to "Busy" page (#5556)

lib/sidekiq/paginator.rb

@@ -43,5 +43,13 @@ def page(key, pageidx = 1, page_size = 25, opts = nil)
         end
       end
     end
+
+    def page_items(items, pageidx = 1, page_size = 25)
+      current_page = pageidx.to_i < 1 ? 1 : pageidx.to_i
+      pageidx = current_page - 1
+      starting = pageidx * page_size
+      items = items.to_a
+      [current_page, items.size, items[starting, page_size]]
+    end
   end
 end

lib/sidekiq/web/application.rb

@@ -74,6 +74,9 @@ def self.set(key, val)
     end
 
     get "/busy" do
+      @count = (params["count"] || 100).to_i
+      (@current_page, @total_size, @workset) = page_items(workset, params["page"], @count)
+
       erb(:busy)
     end
 

web/views/busy.erb

@@ -96,6 +96,11 @@
   <div class="col-sm-7">
     <h3><%= t('Jobs') %></h3>
   </div>
+  <% if @workset.size > 0 && @total_size > @count %>
+    <div class="col-sm-4">
+      <%= erb :_paging, locals: { url: "#{root_path}busy" } %>
+    </div>
+  <% end %>
 </div>
 
 <div class="table_container">
@@ -109,7 +114,7 @@
       <th><%= t('Arguments') %></th>
       <th><%= t('Started') %></th>
     </thead>
-    <% workset.each do |process, thread, msg| %>
+    <% @workset.each do |process, thread, msg| %>
       <% job = Sidekiq::JobRecord.new(msg['payload']) %>
       <tr>
         <td><%= process %></td>