Class: Nines::PingCheck

Inherits:
Check
  • Object
show all
Defined in:
lib/nines/ping_check.rb

Instance Attribute Summary collapse

Attributes inherited from Check

#address, #cycles, #group, #hostname, #interval, #logger, #name, #notifier, #port, #since, #timeout, #up

Instance Method Summary collapse

Methods inherited from Check

#log_status

Constructor Details

#initialize(group, options) ⇒ PingCheck

Returns a new instance of PingCheck.



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# File 'lib/nines/ping_check.rb', line 8

def initialize(group, options)
  super(group, options)
  
  @protocol = (options['protocol'] || 'icmp').downcase
end

Instance Attribute Details

#protocol ⇒ Object

Returns the value of attribute protocol.



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# File 'lib/nines/ping_check.rb', line 6

def protocol
  @protocol
end

Instance Method Details

#debug ⇒ Object

shortcuts



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# File 'lib/nines/ping_check.rb', line 15

def debug     ; Nines::App.debug    ; end

#run ⇒ Object 



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# File 'lib/nines/ping_check.rb', line 17

def run
  while Nines::App.continue do
    check_started = Time.now
    @address = Dnsruby::Resolv.getaddress(hostname)
    
    @pinger = case protocol
      when 'tcp'  then Net::Ping::TCP.new(hostname, nil, timeout)
      when 'udp'  then Net::Ping::UDP.new(hostname, nil, timeout)
      when 'icmp'
        if Process::UID == 0
          Net::Ping::ICMP.new(hostname, nil, timeout)
        else
          Net::Ping::External.new(hostname, nil, timeout)
        end
      else "invalid ping protocol #{protocol}"
    end
    
    # the check
    log_status(@pinger.ping?, "#{protocol == 'icmp' ? 'icmp' : "#{protocol}/#{port}"} ping on #{hostname} (#{address})")
    
    break if debug
    
    wait = interval.to_f - (Time.now - check_started)
    while wait > 0 do
      break unless Nines::App.continue
      sleep [1, wait].min
      wait -= 1
    end
  end
end