From: Rob Sanheim <rsanheim@...>
Date: 2009-09-01T01:48:29+09:00
Subject: Re: [ANN] rev 0.3.0: Now with filesystem monitoring

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On Sat, Aug 29, 2009 at 2:12 AM, Tony Arcieri <tony@medioh.com> wrote:

> Rev is a high-performance event library for Ruby, providing event loops for
> monitoring network, timer, and now filesystem events.  Rev is based on the
> libev C library.
>
> http://github.com/tarcieri/rev/
>
> Rev 0.3.0 provides some bugfixes and performance improvements as well as a
> slew of new features, including many new extensions to existing APIs that
> provide for better integration with the Ruby environment, and a new
> filesystem monitoring API built on the facilities provided by the libev
> event library, including inotify support on Linux.
>
> The new StatWatcher API allows you to monitor any file or directory for
> changes and receive events when changes occur:
>
> -- snip --
>
> class MyStatWatcher < Rev::StatWatcher
>  def on_change
>    begin
>      puts "#{path} has new status #{File.stat(path).inspect}"
>    rescue Errno::ENOENT
>      puts "#{path} was deleted"
>    end
>  end
> end
>
> watcher = MyStatWatcher.new "interesting/file"
> watcher.attach Rev::Loop.default
> Rev::Loop.default.run
>
> -- snip --
>
> I know there are many gems already available to provide filesystem
> monitoring, such as directory_watcher (
> http://github.com/TwP/directory_watcher/tree/master), and that
> EventMachine
> already provides EM.watch_file, but for the Rev users out there, you now
> have the same capabilities with Rev's asynchronous event loops.
>
> --
> Tony Arcieri
> Medioh/Nagravision
>

Hi Tony

Does this use fsevents on Mac OSX?

Thanks,
Rob

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