Added script that I used to move files from files folder up to S3

README.rdoc

@@ -9,6 +9,7 @@ This Redmine[http://www.redmine.org] plugin makes file attachments be stored on
 3. cp vendor/plugins/redmine_s3/config/s3.yml.example config/s3.yml
 4. Edit config/s3.yml with your favourite editor
 5. Restart mongrel/upload to production/whatever
+6. _Optional:_ Run 'rake redmine_s3:files_to_s3' to upload files in your files folder to s3
 
 == Options Overview
 * The bucket specified in s3.yml will be created automatically when the plugin is loaded (this is generally when the server starts).

lib/tasks/files_to_s3.rake

@@ -0,0 +1,57 @@
+namespace :redmine_s3 do
+  task :files_to_s3 => :environment do
+    require 'thread'
+
+    def s3_file_path(file_path)
+      File.basename(file_path).split('_').first + '/' + File.basename(file_path)
+    end
+
+    # updates a single file on s3
+    def update_file_on_s3(file, objects)
+      file_path = s3_file_path(file) 
+      conn = RedmineS3::Connection.conn
+      object = objects[file_path]
+
+      # get the file modified time, which will stay nil if the file doesn't exist yet
+      # we could check if the file exists, but this saves a head request
+      s3_mtime = object.last_modified rescue nil 
+
+      # put it on s3 if the file has been updated or it doesn't exist on s3 yet
+      if s3_mtime.nil? || s3_mtime < File.mtime(file)
+        fileObj = File.open(file, 'r')
+        RedmineS3::Connection.put(file_path, fileObj.read)
+        fileObj.close
+
+        puts "Put file " + File.basename(file)
+      else
+        puts File.basename(file) + ' is up-to-date on S3'
+      end
+    end
+
+    # enqueue all of the files to be "worked" on
+    fileQ = Queue.new
+    Dir.glob(RAILS_ROOT + '/files/*').each do |file|
+      fileQ << file
+    end
+
+    # init the connection, and grab the ObjectCollection object for the bucket
+    conn = RedmineS3::Connection.establish_connection
+    objects = conn.buckets[RedmineS3::Connection.bucket].objects
+
+    # create some threads to start syncing all of the queued files with s3
+    threads = Array.new
+    8.times do
+      threads << Thread.new do
+        while !fileQ.empty?
+          update_file_on_s3(fileQ.pop, objects)
+        end
+      end
+    end
+
+    # wait on all of the threads to finish
+    threads.each do |thread|
+      thread.join
+    end
+
+  end
+end