Module: BBLib::OS

Defined in:
lib/os/bbos.rb,
lib/os/bbsys.rb

Class Method Summary collapse

Class Method Details

.cpu_free_p ⇒ Object 



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# File 'lib/os/bbsys.rb', line 32

def self.cpu_free_p
  100 - cpu_used
end

.cpu_usages ⇒ Object 



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# File 'lib/os/bbsys.rb', line 7

def self.cpu_usages
  if windows?
    {
      total: `wmic cpu get loadpercentage /format:value`.extract_numbers.first.to_f
    }
  elsif linux? || mac?
    system_stats[:cpu]
  else
    nil
  end
end

.cpu_used_p ⇒ Object 



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# File 'lib/os/bbsys.rb', line 28

def self.cpu_used_p
  cpu_usages[:total]
end

.filesystems ⇒ Object 



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# File 'lib/os/bbsys.rb', line 159

def self.filesystems
  if windows?
    types = {
      0 => 'Unknown',
      1 => 'No Root Directory',
      2 => 'Removable Disk',
      3 => 'Local Disk',
      4 => 'Network Drive',
      5 => 'Compact Disc',
      6 => 'RAM Disk'
    }
    parse_wmic('wmic logicaldisk get name,description,filesystem,freespace,size,volumename,volumeserialnumber,providername,drivetype')
      .map do |v|
        v.hpath_move(
          'freespace'          => 'free',
          'providername'       => 'provider',
          'volumename'         => 'volume_name',
          'volumeserialnumber' => 'serial_number',
          'filesystem'         => 'filesystem_type',
          'name'               => 'disk'
        )
        dt = v.delete(:drivetype).to_i
        v[:type] = types[dt]
        if (2..4) === dt
          v[:free]   = v[:free].to_i
          v[:size]   = v[:size].to_i
          v[:used]   = v[:size] - v[:free]
          v[:free_p] = (v[:free] / v[:size].to_f) * 100
          v[:used_p] = (v[:used] / v[:size].to_f) * 100
        end
        v
      end
  else
    `df -aTB 1`
      .split("\n")[1..-1]
      .map{ |l| l.split(/\s{2,}|(?<=\d)\s|(?<=%)\s|(?<=\-)\s|(?<=\w)\s+(?=\w+\s+\d)/)}
      .map do |i|
        {
          filesystem: i[0],
          type:       i[1],
          size:       i[2].to_i,
          used:       i[3].to_i,
          available:  i[4].to_i,
          used_p:     i[5].extract_integers.first.to_f,
          mount:      i[6],
        }
      end
  end
end

.linux? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/os/bbos.rb', line 18

def self.linux?
  !windows? && !mac?
end

.mac? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/os/bbos.rb', line 26

def self.mac?
  builds = ['darwin']
  !(/#{builds.join('|')}/i =~ RUBY_PLATFORM).nil?
end

.mem_free ⇒ Object 



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# File 'lib/os/bbsys.rb', line 54

def self.mem_free
  if windows?
    `wmic os get freephysicalmemory /format:value`.extract_numbers.first
  elsif linux?
    system_stats.hpath('memory.free')
  else
    nil
  end
end

.mem_free_p ⇒ Object 



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# File 'lib/os/bbsys.rb', line 64

def self.mem_free_p
  (mem_free.to_f / mem_total.to_f) * 100.0
end

.mem_total ⇒ Object 



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# File 'lib/os/bbsys.rb', line 36

def self.mem_total
  if windows?
    `wmic computersystem get TotalPhysicalMemory`.extract_numbers.first / 1024.0
  elsif linux?
    system_stats.hpath('memory.total')
  else
    nil
  end
end

.mem_used ⇒ Object 



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# File 'lib/os/bbsys.rb', line 46

def self.mem_used
  mem_total.to_f - mem_free.to_f
end

.mem_used_p ⇒ Object 



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# File 'lib/os/bbsys.rb', line 50

def self.mem_used_p
  (mem_used.to_f / mem_total.to_f) * 100.0
end

.os ⇒ Object 



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# File 'lib/os/bbos.rb', line 7

def self.os
  return :windows if windows?
  return :mac if mac?
  return :linux if linux?
end

.os_info ⇒ Object 



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# File 'lib/os/bbos.rb', line 31

def self.os_info
  if windows?
    data = `wmic os get manufacturer,name,organization,osarchitecture,version /format:list`
    data = data.split("\n").reject{ |r| r.strip == '' }.map do |m|
      spl = m.split('=')
      [spl.first.to_clean_sym.downcase, spl[1..-1].join('=')]
    end.to_h
    data[:name] = data[:name].split('|').first
    data[:osarchitecture] = data[:osarchitecture].extract_integers.first
    data.hpath_move( 'osarchitecture' => 'bits' )
    data[:host] = `hostname`.strip
    data[:os] = os
    data
  else
    release = {}
    begin
      # First attempt to get release info uses lsb_release

      release = `lsb_release -a`.split("\n").map do |l|
        spl = l.split(':')
        [
          spl.first.downcase.to_clean_sym,
          spl[1..-1].join(':').strip
        ]
      end.to_h
      release.hpath_move('description' => 'name', 'release' => 'name', 'distributor_id' => 'manufacturer')
    rescue
      # Try finding the release file and parsing it instead of lsb_release

      begin
        release = `cat /etc/*release`
          .split("\n")
          .reject{ |l| !(l.include?(':') || l.include?('=')) }
          .map{|l| l.msplit('=',':') }
          .map{ |a| [a.first.downcase.to_clean_sym, a[1..-1].join(':').uncapsulate] }
          .to_h
      rescue
        # Both attempts failed

      end
    end
    {
      release: `uname -r`.strip,
      bits:    `uname -r` =~ /x86_64/i ? 64 : 32,
      host:    `uname -n`.strip,
      os:      os
    }.merge(release)
  end
end

.parse_wmic(cmd) ⇒ Object 



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# File 'lib/os/bbos.rb', line 81

def self.parse_wmic cmd
  `#{cmd} /format:list`
    .split("\n\n\n").reject(&:empty?)
    .map{ |l| l.split("\n\n")
      .map{ |l| spl = l.split('='); [spl.first.strip.downcase.to_clean_sym, spl[1..-1].join('=').strip ] }.to_h
    }.reject(&:empty?)
end

.processes ⇒ Object 



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# File 'lib/os/bbsys.rb', line 121

def self.processes
  if windows?
    tasks = `tasklist /v`
    cpu = `wmic path win32_perfformatteddata_perfproc_process get PercentProcessorTime,percentusertime,IDProcess /format:list`
    cpu = cpu.split("\n\n\n\n").reject(&:empty?)
          .map{ |l| l.scan(/\d+/).map(&:to_i)}
          .map{ |n|[ n[0], {cpu: n[1], user: n[2] }]}.to_h
    lines = tasks.split("\n")[3..-1].map{ |l| l.split(/\s{2,}/) }
    mem = mem_total
    cmds = `wmic process get processid,commandline /format:csv`.split("\n")[1..-1].reject{ |r| r.strip  == ''}.map{ |l| l.split(',')[1..-1] }.map{ |l| [l.last.to_i, l[0..-2].join(',')]}.to_h
    lines.map do |l|
      pid = l[1].extract_numbers.first
      {
        name: l[0],
        pid:  pid,
        user: l[4],
        mem:  (((l[3].gsub(',', '').extract_numbers.first / mem_total) * 100) rescue nil),
        cpu:  (cpu[pid][:cpu] rescue nil),
        cmd:  cmds[pid]
      }
    end
  else
    t = `ps -e -o comm,pid,ruser,%cpu,%mem,cmd`
    lines = t.split("\n")[1..-1].map{ |l| l.split(/\s+/) }
    lines.map{ |l| l.size == 6 ? l : [l[0], l[1], l[2], l[3], l[4], l[5..-1].join(' ')] }
    lines.map do |l|
      {
        name: l[0],
        pid:  l[1].to_i,
        user: l[2],
        cpu:  l[3].to_f,
        mem:  l[4].to_f,
        cmd:  l[5]
      }
    end
  end
end

.root_volume_labels ⇒ Object

Windows only method to get the volume labels of disk drives



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# File 'lib/os/bbsys.rb', line 232

def self.root_volume_labels
  return nil unless BBLib.windows?
  `wmic logicaldisk get caption,volumename`.split("\n")[1..-1].map{ |m| [m.split("  ").first.to_s.strip, m.split("  ")[1..-1].to_a.join(' ').strip] }.reject{ |o,t| o == '' }.to_h
end

.root_volumes ⇒ Object

A mostly platform agnostic call to get root volumes



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# File 'lib/os/bbsys.rb', line 211

def self.root_volumes
  if BBLib.windows?
    begin # For windows

      `wmic logicaldisk get name`.split("\n").map{ |m| m.strip }[1..-1].reject{ |r| r == '' }
    rescue
      begin # Windows attempt 2

        `fsutil fsinfo drives`.scan(/(?<=\s)\w\:/)
      rescue
        nil
      end
    end
  else
    begin
      `ls /`.split("\n").map{ |m| m.strip }.reject{ |r| r == '' }
    rescue # All attempts failed

      nil
    end
  end
end

.system_stats ⇒ Object 



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# File 'lib/os/bbsys.rb', line 68

def self.system_stats
  if windows?
    memfree  = mem_free
    memtotal = mem_total
    memused  = memtotal - memfree
    {
      cpu: cpu_usages,
      memory: {
        free:   memfree,
        used:   memused,
        total:  memtotal,
        free_p: (memfree / memtotal.to_f) * 100,
        used_p: (memused / memtotal.to_f) * 100
      },
      uptime: uptime
    }
  else
    stats = `top -b -n2 -d 0.1`.split("\n")
    cpu   = stats.find_all{|l| l =~ /\A\%?Cpu\(s\)/i }.last.extract_numbers
    loads = stats.find_all{|l| l =~ / load average\: /i }.last.scan(/load average:.*/i).first.extract_numbers
    mem   = stats.find_all{|l| l =~ /KiB Mem|Mem\:/i }.last.extract_numbers
    time  = `cat /proc/uptime`.extract_numbers
    {
      cpu: {
        user:                cpu[0],
        system:              cpu[1],
        nice:                cpu[2],
        total:               cpu[0..2].inject(0){ |sum, v| sum += v.to_f },
        idle:                cpu[3],
        wait:                cpu[4],
        hardware_interrupts: cpu[5],
        software_interrupts: cpu[6],
        hypervisor:          cpu[7]
      },
      uptime: time[0],
      uptime_idle: time[1],
      memory: {
        free:   mem[1],
        used:   mem[2],
        total:  mem[0],
        cache:  mem[3],
        free_p: (mem[1] / mem[0].to_f) * 100,
        used_p: (mem[2] / mem[0].to_f) * 100
      },
      load_average: {
        1 => loads[0],
        5 => loads[1],
        15 => loads[2]
      }
    }
  end
end

.unix? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/os/bbos.rb', line 22

def self.unix?
  !windows?
end

.uptime ⇒ Object 



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# File 'lib/os/bbsys.rb', line 19

def self.uptime
  if windows?
    uptime = `net statistics server`.split("\n").find{|l| l.start_with?('Statistics since ')}.split(/since /i).last.strip
    Time.now - Time.strptime(uptime, '%m/%d/%Y %l:%M:%S %p')
  else
    `cat /proc/uptime`.extract_numbers.first
  end
end

.windows? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/os/bbos.rb', line 13

def self.windows?
  builds = ['mingw', 'mswin', 'cygwin', 'bccwin']
  !(/#{builds.join('|')}/i =~ RUBY_PLATFORM).nil?
end