Cache stats in background daemon

Author: nygrenh

app/background_tasks/stats_fetcher_task.rb

@@ -0,0 +1,25 @@
+
+
+class SandboxStatusFetcherTask
+  def initialize
+  end
+
+  def run
+    data = {
+      high_priority_submissions_count: Submission.to_be_reprocessed.where(processing_priority: 0).count
+      sandbox_queue_length: Submission.to_be_reprocessed.count
+      unprocessed_submissions_count: Submission.where(processed: false).count
+      submissions_count_minute: Submission.where(created_at: (Time.current - 1.minute)..Time.current).count
+      submissions_count_five_minutes: Submission.where(created_at: (Time.current - 5.minute)..Time.current).count
+      submissions_count_hour: Submission.where(created_at: (Time.current - 1.hour)..Time.current).count
+      submissions_count_today: Submission.where(created_at: Time.current.all_day).count
+      submissions_count_yesterday: Submission.where(created_at: Time.current.yesterday.all_day).count
+      submissions_count_week: Submission.where(created_at: Time.current.all_week).count
+    }
+    Rails.cache.write("stats-cache", data.to_json, expires_in: 1.minute)
+  end
+
+  def wait_delay
+    5
+  end
+end

app/controllers/status_controller.rb

@@ -4,15 +4,8 @@
 class StatusController < ApplicationController
   def index
     authorize! :read_instance_state, nil
-    @high_priority_submissions_count = Submission.to_be_reprocessed.where(processing_priority: 0).count
-    @sandbox_queue_length = Submission.to_be_reprocessed.count
-    @unprocessed_submissions_count = Submission.where(processed: false).count
-    @submissions_count_minute = Submission.where(created_at: (Time.current - 1.minute)..Time.current).count
-    @submissions_count_five_minutes = Submission.where(created_at: (Time.current - 5.minute)..Time.current).count
-    @submissions_count_hour = Submission.where(created_at: (Time.current - 1.hour)..Time.current).count
-    @submissions_count_today = Submission.where(created_at: Time.current.all_day).count
-    @submissions_count_yesterday = Submission.where(created_at: Time.current.yesterday.all_day).count
-    @submissions_count_week = Submission.where(created_at: Time.current.all_week).count
+    @stats = Rails.cache.fetch("stats-cache")
+    @stats = JSON.parse(@stats) if @stats
     @sandboxes = Rails.cache.fetch("sandbox-status-cache")
     @sandboxes = JSON.parse(@sandboxes) if @sandboxes
   end

app/views/status/index.html.erb

@@ -6,46 +6,50 @@
 
 <h2>Submissions</h2>
 
-<table class="table">
-  <tbody>
-    <tr>
-      <th scope="row">High priority submissions in queue </th scope="row">
-      <td><%= @high_priority_submissions_count %></td>
-    </tr>
-    <tr>
-      <th scope="row">All submissions in queue</th scope="row">
-      <td><%= @sandbox_queue_length %></td>
-    </tr>
-    <tr>
-      <th scope="row">Submissions, processing not complete</th>
-      <td><%= @unprocessed_submissions_count %></td>
-    </tr>
-    <tr>
-      <th scope="row">Submissions during the last minute</th>
-      <td><%= @submissions_count_minute %></td>
-    </tr>
-    <tr>
-      <th scope="row">Submissions during the last five minutes</th>
-      <td><%= @submissions_count_five_minutes %></td>
-    </tr>
-    <tr>
-      <th scope="row">Submissions during the latest hour</th>
-      <td><%= @submissions_count_hour %></td>
-    </tr>
-    <tr>
-      <th scope="row">Submissions today</th>
-      <td><%= @submissions_count_today %></td>
-    </tr>
-    <tr>
-      <th scope="row">Submissions yesterday</th>
-      <td><%= @submissions_count_yesterday %></td>
-    </tr>
-    <tr>
-      <th scope="row">Submissions this week</th>
-      <td><%= @submissions_count_week %></td>
-    </tr>
-  </tbody>
-</table>
+<% if @stats %>
+  <table class="table">
+    <tbody>
+      <tr>
+        <th scope="row">High priority submissions in queue </th scope="row">
+        <td><%= @stats['high_priority_submissions_count'] %></td>
+      </tr>
+      <tr>
+        <th scope="row">All submissions in queue</th scope="row">
+        <td><%= @stats['sandbox_queue_length'] %></td>
+      </tr>
+      <tr>
+        <th scope="row">Submissions, processing not complete</th>
+        <td><%= @stats['unprocessed_submissions_count'] %></td>
+      </tr>
+      <tr>
+        <th scope="row">Submissions during the last minute</th>
+        <td><%= @stats['submissions_count_minute'] %></td>
+      </tr>
+      <tr>
+        <th scope="row">Submissions during the last five minutes</th>
+        <td><%= @stats['submissions_count_five_minutes'] %></td>
+      </tr>
+      <tr>
+        <th scope="row">Submissions during the latest hour</th>
+        <td><%= @stats['submissions_count_hour'] %></td>
+      </tr>
+      <tr>
+        <th scope="row">Submissions today</th>
+        <td><%= @stats['submissions_count_today'] %></td>
+      </tr>
+      <tr>
+        <th scope="row">Submissions yesterday</th>
+        <td><%= @stats['submissions_count_yesterday'] %></td>
+      </tr>
+      <tr>
+        <th scope="row">Submissions this week</th>
+        <td><%= @stats['submissions_count_week'] %></td>
+      </tr>
+    </tbody>
+  </table>
+<% else %>
+  <p>No stats cached within the last minute. Check if the background daemon is running.</p>
+<% end %>
 
 
 <h2>Sandboxes</h2>