Allow `uploads:missing` Rake task to be run for a single site.

lib/tasks/uploads.rake

@@ -318,50 +318,53 @@ end
 
 # list all missing uploads and optimized images
 task "uploads:missing" => :environment do
+  if ENV["RAILS_DB"]
+    list_missing_uploads
+  else
+    RailsMultisite::ConnectionManagement.each_connection do |db|
+      list_missing_uploads
+    end
+  end
+end
+
+def list_missing_uploads
+  if Discourse.store.external?
+    puts "This task only works for internal storages."
+    return
+  end
 
   public_directory = "#{Rails.root}/public"
 
-  RailsMultisite::ConnectionManagement.each_connection do |db|
+  Upload.find_each do |upload|
 
-    if Discourse.store.external?
-      puts "This task only works for internal storages."
-      next
+    # could be a remote image
+    next unless upload.url =~ /^\/[^\/]/
+
+    path = "#{public_directory}#{upload.url}"
+    bad = true
+    begin
+      bad = false if File.size(path) != 0
+    rescue
+      # something is messed up
     end
-
-
-    Upload.find_each do |upload|
-
-      # could be a remote image
-      next unless upload.url =~ /^\/[^\/]/
-
-      path = "#{public_directory}#{upload.url}"
-      bad = true
-      begin
-        bad = false if File.size(path) != 0
-      rescue
-        # something is messed up
-      end
-      puts path if bad
-    end
-
-    OptimizedImage.find_each do |optimized_image|
-
-      # remote?
-      next unless optimized_image.url =~ /^\/[^\/]/
-
-      path = "#{public_directory}#{optimized_image.url}"
-
-      bad = true
-      begin
-        bad = false if File.size(path) != 0
-      rescue
-        # something is messed up
-      end
-      puts path if bad
-    end
-
+    puts path if bad
   end
 
+  OptimizedImage.find_each do |optimized_image|
+
+    # remote?
+    next unless optimized_image.url =~ /^\/[^\/]/
+
+    path = "#{public_directory}#{optimized_image.url}"
+
+    bad = true
+    begin
+      bad = false if File.size(path) != 0
+    rescue
+      # something is messed up
+    end
+    puts path if bad
+  end
 end
 
 ################################################################################