Class: SlashPort::Component::LinuxHost

Inherits:
SlashPort::Component show all
Defined in:
app/models/components/linuxhost.rb

Instance Method Summary collapse

Methods inherited from SlashPort::Component

#_want, attribute, attributes, #attributes, class_initialize, components, config, #configs, configs, disable, enable, #get_attributes, get_attributes, #get_configs, get_configs, #get_things, get_things, inherited, is_enabled?, label, #path

Instance Method Details

#_reapchild ⇒ Object 



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# File 'app/models/components/linuxhost.rb', line 26

def _reapchild
  begin
    Process.wait(-1, Process::WNOHANG)
  rescue Errno::ECHILD
    # ignore
  end
end

#DiskStats ⇒ Object

def MemStats



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# File 'app/models/components/linuxhost.rb', line 81

def DiskStats
  data = Array.new
  IO.popen("df -PlB 1").readlines().each do |line|
    # skip header
    next if line =~ /Filesystem\s/
    # skip nonpath sources (tmpfs, udev, etc)
    next unless line =~ /^\//

    line.chomp!
    tuple = SlashPort::Tuple.new
    fields = %w[size used available percentused]
    values = line.split
    source = values.shift
    mount = values.pop

    tuple.labels["source"] = source
    tuple.labels["mount"] = mount
    fields.zip(values).each do |field,value|
      if field == "percentused"
        value = value.to_i / 100.0
      end

      tuple.data[field] = value
    end
    data << tuple
  end
  _reapchild
  return data
end

#IfStats ⇒ Object 



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# File 'app/models/components/linuxhost.rb', line 40

def IfStats
  data = Array.new
  File.open("/proc/net/dev").readlines().each do |line|
    line.chomp!
    next if line =~ /^Inter-|^ face/

    tuple = SlashPort::Tuple.new

    fields = %w[rx_bytes rx_packets rx_errors rx_drop rx_fifo rx_frame
                rx_compressed rx_multicast tx_bytes tx_packets tx_errors
                tx_drop tx_fifo tx_colls tx_carrier tx_compressed]

    interface, values = line.split(":")
    interface.gsub!(/\s+/, "")
    
    tuple.labels["interface"] = interface
    fields.zip(values.split).each do |field,value|
      tuple.data[field] = value
    end
    data << tuple
  end
  return data
end

#LoadAverage ⇒ Object

def DiskStats



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# File 'app/models/components/linuxhost.rb', line 111

def LoadAverage
  data = Array.new
  tuple = SlashPort::Tuple.new
  loads = %x{uptime}.chomp.delete(",").split(/ +/)[-3..-1].map { |x| x.to_f }
  _reapchild
  load1, load5, load15 = loads
  tuple.data["load_1min"] = load1
  tuple.data["load_5min"] = load5
  tuple.data["load_15min"] = load15

  data << tuple
  return data
end

#MemStats ⇒ Object 



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# File 'app/models/components/linuxhost.rb', line 64

def MemStats
  data = Array.new
  tuple = SlashPort::Tuple.new
  File.open("/proc/meminfo").readlines().each do |line|
    line.chomp!
    key, value, unit = line.split(/[: ]+/)
    value = value.to_i
    if unit == "kB"
      value *= 1024
    end

    tuple.data[key.downcase] = value
  end
  data << tuple
  return data
end

#Uptime ⇒ Object 



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# File 'app/models/components/linuxhost.rb', line 34

def Uptime
  tuple = SlashPort::Tuple.new
  tuple.data["uptime"] = File.open("/proc/uptime").read().split(" ")[0]
  return tuple
end