Module: Usagewatch

Defined in:
lib/usagewatch/linux.rb,
lib/usagewatch/version.rb

Overview

License: (MIT), Copyright © 2013 usagewatch Author Phil Chen, contributor Ruben Espinosa

Constant Summary collapse

VERSION = 
"0.0.7"

Class Method Summary collapse

Class Method Details

.bandrx ⇒ Object

Bandwidth Received Method



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# File 'lib/usagewatch/linux.rb', line 144

def self.bandrx

  if File.exists?("/proc/net/dev")
    File.open("/proc/net/dev", "r") do |file|
      @result = file.read
    end
  end

  @arrRows = @result.split("\n")

  @arrEthLoRows = @arrRows.grep(/eth|lo/)

  rowcount = (@arrEthLoRows.count - 1)

  for i in (0..rowcount)
    @arrEthLoRows[i] = @arrEthLoRows[i].gsub(/\s+/m, ' ').strip.split(" ")
  end

  @arrColumns = Array.new
  for l in (0..rowcount)
    @temp = Array.new
    @temp[0] = @arrEthLoRows[l][1]
    @temp[1] = @arrEthLoRows[l][9]
    @arrColumns << @temp
  end

  columncount = (@arrColumns[0].count - 1)

  @arrTotal = Array.new
  for p in (0..columncount)
    @arrTotal[p] = 0
  end

  for j in (0..columncount)
    for k in (0..rowcount)
      @arrTotal[j] = @arrColumns[k][j].to_i + @arrTotal[j]
    end
  end

  @bandrxtx = @arrTotal
end

.bandtx ⇒ Object

Bandwidth Transmitted Method



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# File 'lib/usagewatch/linux.rb', line 199

def self.bandtx

  if File.exists?("/proc/net/dev")
    File.open("/proc/net/dev", "r") do |file|
      @result = file.read
    end
  end

  @arrRows = @result.split("\n")

  @arrEthLoRows = @arrRows.grep(/eth|lo/)

  rowcount = (@arrEthLoRows.count - 1)

  for i in (0..rowcount)
    @arrEthLoRows[i] = @arrEthLoRows[i].gsub(/\s+/m, ' ').strip.split(" ")
  end

  @arrColumns = Array.new
  for l in (0..rowcount)
    @temp = Array.new
    @temp[0] = @arrEthLoRows[l][1]
    @temp[1] = @arrEthLoRows[l][9]
    @arrColumns << @temp
  end

  columncount = (@arrColumns[0].count - 1)

  @arrTotal = Array.new
  for p in (0..columncount)
    @arrTotal[p] = 0
  end

  for j in (0..columncount)
    for k in (0..rowcount)
      @arrTotal[j] = @arrColumns[k][j].to_i + @arrTotal[j]
    end
  end

  @bandrxtx = @arrTotal
end

.diskio ⇒ Object

Disk Usage Method



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# File 'lib/usagewatch/linux.rb', line 254

def self.diskio

  if File.exists?("/proc/diskstats")
    File.open("/proc/diskstats", "r") do |file|
      @result = file.read
    end
  end

  @arrRows = @result.split("\n")

  rowcount = (@arrRows.count - 1)

  for i in (0..rowcount)
    @arrRows[i] = @arrRows[i].gsub(/\s+/m, ' ').strip.split(" ")
  end

  @arrColumns = Array.new
  for l in (0..rowcount)
    @temp = Array.new
    @temp[0] = @arrRows[l][3]
    @temp[1] = @arrRows[l][7]
    @arrColumns << @temp
  end

  columncount = (@arrColumns[0].count - 1)

  @arrTotal = Array.new
  for p in (0..columncount)
    @arrTotal[p] = 0
  end

  for j in (0..columncount)
    for k in (0..rowcount)
      @arrTotal[j] = @arrColumns[k][j].to_i + @arrTotal[j]
    end
  end

  @diskiorw= @arrTotal
end

.uw_bandrx ⇒ Object

Current Bandwidth Received Calculation in Mbit/s



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# File 'lib/usagewatch/linux.rb', line 187

def self.uw_bandrx

  @new0 = self.bandrx
  sleep 1
  @new1 = self.bandrx

  @bytesreceived = @new1[0].to_i - @new0[0].to_i
  @bitsreceived = (@bytesreceived * 8)
  @megabitsreceived = (@bitsreceived.to_f / 1024 / 1024).round(3)
end

.uw_bandtx ⇒ Object

Current Bandwidth Transmitted in Mbit/s



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# File 'lib/usagewatch/linux.rb', line 242

def self.uw_bandtx

  @new0 = self.bandtx
  sleep 1
  @new1 = self.bandtx

  @bytestransmitted = @new1[1].to_i - @new0[1].to_i
  @bitstransmitted = (@bytestransmitted * 8)
  @megabitstransmitted = (@bitstransmitted.to_f / 1024 / 1024).round(3)
end

.uw_cputop ⇒ Object

return hash of top ten proccesses by cpu consumption example [[“apache2”, 12.0], [“passenger”, 13.2]]



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# File 'lib/usagewatch/linux.rb', line 48

def self.uw_cputop
  ps = `ps aux | awk '{print $11, $3}' | sort -k2nr  | head -n 10`
  array = []
  ps.each_line do |line|
    line = line.chomp.split(" ")
    array << [line.first.gsub(/[\[\]]/, ""), line.last]
  end
  array
end

.uw_cpuused ⇒ Object

Show the percentage of CPU used



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# File 'lib/usagewatch/linux.rb', line 23

def self.uw_cpuused
  @proc0 = File.readlines('/proc/stat').grep(/^cpu /).first.split(" ")
  sleep 1
  @proc1 = File.readlines('/proc/stat').grep(/^cpu /).first.split(" ")

  @proc0usagesum = @proc0[1].to_i + @proc0[2].to_i + @proc0[3].to_i
  @proc1usagesum = @proc1[1].to_i + @proc1[2].to_i + @proc1[3].to_i
  @procusage = @proc1usagesum - @proc0usagesum

  @proc0total = 0
  for i in (1..4) do
    @proc0total += @proc0[i].to_i
  end
  @proc1total = 0
  for i in (1..4) do
    @proc1total += @proc1[i].to_i
  end
  @proctotal = (@proc1total - @proc0total)

  @cpuusage = (@procusage.to_f / @proctotal.to_f)
  @cpuusagepercentage = (100 * @cpuusage).to_f.round(2)
end

.uw_diskioreads ⇒ Object

Current Disk Reads Completed



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# File 'lib/usagewatch/linux.rb', line 295

def self.uw_diskioreads

  @new0 = self.diskio
  sleep 1
  @new1 = self.diskio

  @diskreads = @new1[0].to_i - @new0[0].to_i
end

.uw_diskiowrites ⇒ Object

Current Disk Writes Completed



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# File 'lib/usagewatch/linux.rb', line 305

def self.uw_diskiowrites

  @new0 = self.diskio
  sleep 1
  @new1 = self.diskio

  @diskwrites = @new1[1].to_i - @new0[1].to_i
end

.uw_diskused ⇒ Object

Show the amount of total disk used in Gigabytes



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# File 'lib/usagewatch/linux.rb', line 5

def self.uw_diskused
  @df = `df`
  @parts = @df.split(" ").map { |s| s.to_i }
  @sum = 0
  for i in (9..@parts.size - 1).step(6) do
    @sum += @parts[i]
  end
  @round = @sum.round(2)
  @totaldiskused = ((@round/1024)/1024).round(2)
end

.uw_diskused_perc ⇒ Object

Show the percentage of disk used.



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# File 'lib/usagewatch/linux.rb', line 17

def self.uw_diskused_perc
  df = `df --total`
  df.split(" ").last.to_f.round(2)
end

.uw_load ⇒ Object

Show the average system load of the past minute



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# File 'lib/usagewatch/linux.rb', line 133

def self.uw_load
  if File.exists?("/proc/loadavg")
    File.open("/proc/loadavg", "r") do |file|
      @loaddata = file.read
    end

    @load = @loaddata.split(/ /).first.to_f
  end
end

.uw_memtop ⇒ Object

return hash of top ten proccesses by mem consumption example [[“apache2”, 12.0], [“passenger”, 13.2]]



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# File 'lib/usagewatch/linux.rb', line 122

def self.uw_memtop
  ps = `ps aux | awk '{print $11, $4}' | sort -k2nr  | head -n 10`
  array = []
  ps.each_line do |line|
    line = line.chomp.split(" ")
    array << [line.first.gsub(/[\[\]]/, ""), line.last]
  end
  array
end

.uw_memused ⇒ Object

Show the percentage of Active Memory used



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# File 'lib/usagewatch/linux.rb', line 106

def self.uw_memused
  if File.exists?("/proc/meminfo")
    File.open("/proc/meminfo", "r") do |file|
      @result = file.read
    end
  end

  @memstat = @result.split("\n").collect{|x| x.strip}
  @memtotal = @memstat[0].gsub(/[^0-9]/, "")
  @memactive = @memstat[5].gsub(/[^0-9]/, "")
  @memactivecalc = (@memactive.to_f * 100) / @memtotal.to_f
  @memusagepercentage = @memactivecalc.round
end

.uw_tcpused ⇒ Object

Show the number of TCP connections used



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# File 'lib/usagewatch/linux.rb', line 59

def self.uw_tcpused
  if File.exists?("/proc/net/sockstat")
    File.open("/proc/net/sockstat", "r") do |ipv4|
      @sockstat = ipv4.read
    end

    @tcp4data = @sockstat.split
    @tcp4count = @tcp4data[5]
  end

  if  File.exists?("/proc/net/sockstat6")
    File.open("/proc/net/sockstat6", "r") do |ipv6|
      @sockstat6 = ipv6.read

    end

    @tcp6data = @sockstat6.split
    @tcp6count = @tcp6data[2]
  end

  @totaltcpused = @tcp4count.to_i + @tcp6count.to_i
end

.uw_udpused ⇒ Object

Show the number of UDP connections used



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# File 'lib/usagewatch/linux.rb', line 83

def self.uw_udpused
  if File.exists?("/proc/net/sockstat")
    File.open("/proc/net/sockstat", "r") do |ipv4|
      @sockstat = ipv4.read
    end

    @udp4data = @sockstat.split
    @udp4count = @udp4data[16]
  end

  if File.exists?("/proc/net/sockstat6")
    File.open("/proc/net/sockstat6", "r") do |ipv6|
      @sockstat6 = ipv6.read
    end

    @udp6data = @sockstat6.split
    @udp6count = @udp6data[5]
  end

  @totaludpused = @udp4count.to_i + @udp6count.to_i
end