Module: SfcIkiteru

Defined in:
lib/sfc_ikiteru.rb

Constant Summary collapse

VERSION = 
'0.0.7'

Class Method Summary collapse

Class Method Details

.ikiteru(timeout = 3) ⇒ Object 



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# File 'lib/sfc_ikiteru.rb', line 24

def SfcIkiteru.ikiteru(timeout=3)
  results = Array.new

  EM::run do
    EM::defer do
      loop do
        EM::stop if results.size >= servers.size
        sleep 0.1
      end
    end
    servers.each{|s|
      EM::defer do
        res = ping(s[:host], timeout, s[:service])
        results << {:host => s[:host], :ping => res}
      end
    }
  end
  count = 0
  results.each{|i|
    count+=1 if i[:ping] == true
  }
  per = count.to_f / results.size
  return per, results
end

.ping(host, timeout = 5, service = "echo") ⇒ Object 



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# File 'lib/sfc_ikiteru.rb', line 49

def SfcIkiteru.ping(host, timeout=5, service="echo")
  begin
    timeout(timeout) do
      TCPSocket.new(host, service).close
    end
  rescue Errno::ECONNREFUSED
    return true
  rescue Timeout::Error, StandardError
    return false
  end
  return true
end

.servers ⇒ Object 



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# File 'lib/sfc_ikiteru.rb', line 9

def SfcIkiteru.servers
  [
   {:host => 'web.sfc.keio.ac.jp', :service => 'echo'},
   {:host => 'ccz01.sfc.keio.ac.jp', :service => 'ssh'},
   {:host => 'ccz02.sfc.keio.ac.jp', :service => 'ssh'},
   {:host => 'mail.sfc.keio.ac.jp', :service => 'echo'},
   {:host => 'www.mag.keio.ac.jp', :service => 'echo'},
   {:host => 'cpu0.mag.keio.ac.jp', :service => 'echo'},
   {:host => 'gw2.sfc.keio.ac.jp', :service => 'echo'},
   {:host => 'keio.gw.sinet.ad.jp', :service => 'echo'},
   {:host => 'shonan.sfc.wide.ad.jp', :service => 'http'},
   {:host => 'masui.sfc.keio.ac.jp', :service => 'http'}
  ]
end