Add dry run option to `UploadRecovery`.

lib/tasks/uploads.rake

@@ -719,11 +719,13 @@ end
 task "uploads:recover" => :environment do
   require_dependency "upload_recovery"
 
+  dry_run = ENV["DRY_RUN"].present?
+
   if ENV["RAILS_DB"]
-    UploadRecovery.new.recover
+    UploadRecovery.new(dry_run: dry_run).recover
   else
     RailsMultisite::ConnectionManagement.each_connection do |db|
-      UploadRecovery.new.recover
+      UploadRecovery.new(dry_run: dry_run).recover
     end
   end
 end

lib/upload_recovery.rb

@@ -1,4 +1,8 @@
 class UploadRecovery
+  def initialize(dry_run: false)
+    @dry_run = dry_run
+  end
+
   def recover
     Post.where("raw LIKE '%upload:\/\/%'").find_each do |post|
       analyzer = PostAnalyzer.new(post.raw, post.topic_id)
@@ -12,7 +16,11 @@ class UploadRecovery
         end
 
         if img["data-orig-src"]
-          recover_post_upload(post, img["data-orig-src"])
+          if @dry_run
+            puts "#{post.full_url} #{img["data-orig-src"]}"
+          else
+            recover_post_upload(post, img["data-orig-src"])
+          end
         end
       end
     end