From: hemant <gethemant@...>
Date: 2008-10-22T03:42:19+09:00
Subject: Re: Sugestion - Background process

On Tue, Oct 21, 2008 at 9:33 PM, Marcelo Junior
<marcelo.machado.jr@gmail.com> wrote:
> Before reply Backgroundrb, leaves to explain my situation. I need make a
> feed reader, and obvious, she need refreshing the feeds registreds.
> Everything is running smoothly, and for to make the updater, I used
> Backgroundrb. But, I can not more than one process of Backgroundrb. I'm
> doing the following.
>
> WORKER
>
> class RefreshWorker < BackgrounDRb::MetaWorker
>  set_worker_name :refresh_worker
>  def create(args = nil)
>    logger.info "==========================================="
>    logger.info "=           FEEDEEDO REFRESH              ="
>    logger.info "==========================================="
>    logger.info "por Marcelo I. Machado Junior"
>
>    refresh
>  end
>
>  def refresh
>      blogs = Blog.find(:all)
>      blogs.each do |blog|
>        logger.info "#{Time.now.strftime('%d/%m/%y %H:%M:%S')} -
> #{blog.title}"
>  blog.refresh
>      end
>      logger.info "#{blogs.size} blogs atualizados"
>      refresh
>  end
>
>
> And the class Blog, I have the following:
>
>  def refresh
>    begin
>        feed = FeedParser.new(self.link)
>        self.title = feed.title
>        self.description = feed.subtitle.html2text if feed.subtitle
>       #b.publication = feed.publication || Time.now
>
>        #É percorrido cada item do feed e cadastrado no banco
>
>        feed.items.each do |item|
>          bi = BlogItem.create() do |i|
>            i.link = item.link
>            i.title = item.title
>            i.description = item.content.html2text
>            i.indexed_content =
> Blog.prepare_content(item.content.html2text)
>            i.indexed_title = Blog.prepare_content(item.title || '')
>            #i.publication = item.publication || Time.now
>          end
>          self.blog_items << bi
>        end
>    self.save
>      true
>    rescue
>      retry
>    end
>  end
>
> end
>
> But I want more instances, who knows, for a blog.

You have two options:

1. Use MiddleMan.new_worker() to create more than one instance of your
worker. Specifics I leave it to you.
2. Make feed fetching threaded in worker, using inbuilt thread pool.