import drb/sample

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_8@5698 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 51 insertions, 0 deletions

diff --git a/sample/drb/dbiff.rb b/sample/drb/dbiff.rb
new file mode 100644
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+++ b/sample/drb/dbiff.rb
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+#
+# dbiff.rb - distributed cdbiff (server)
+#  * original: cdbiff by Satoru Takabayashi <http://namazu.org/~satoru/cdbiff>
+
+require 'drb/drb'
+require 'drb/eq'
+require 'drb/observer'
+
+class Biff
+  include DRb::DRbObservable
+
+  def initialize(filename, interval)
+    super()
+    @filename = filename
+    @interval = interval
+  end
+
+  def run
+    last = Time.now
+    while true
+      begin 
+	sleep(@interval)
+	current = File::mtime(@filename)
+	if current > last
+	  changed
+	  begin
+	    notify_observers(@filename, current) 
+	  rescue Error
+	  end
+	  last = current
+	end
+      rescue
+	next
+      end
+    end
+  end
+end
+
+def main
+  filename = "/var/mail/#{ENV['USER']}"
+  interval = 15
+  uri = 'druby://:19903'
+
+  biff = Biff.new(filename, interval)
+
+  DRb.start_service(uri, biff)
+  biff.run
+end
+
+main
+