Class: DCell::InfoService

Inherits:
Object
  • Object
show all
Includes:
Celluloid
Defined in:
lib/dcell/info_service.rb

Constant Summary collapse

UPTIME_REGEX = 
/up ((\d+ days?,)?\s*(\d+:\d+|\d+ \w+)),.*(( \d.\d{2},?){3})/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ InfoService

Returns a new instance of InfoService.



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# File 'lib/dcell/info_service.rb', line 12

def initialize
  @cpu_arch = RbConfig::CONFIG['host_cpu']
  @os       = RbConfig::CONFIG['host_os'][/^[A-Za-z]+/]

  uname = `uname -a`.match(/\w+ (\w[\w+\.\-]*) ([\w+\.\-]+)/)
  @hostname, @os_version = uname[1], uname[2]

  @platform     = RUBY_PLATFORM
  @ruby_version = RUBY_VERSION
  @ruby_engine  = RUBY_ENGINE

  case os
  when 'darwin'
    cpu_info = `sysctl -n machdep.cpu.brand_string`.match(/^((\w+).*) @ (\d+.\d+)GHz/)
    if cpu_info
      @cpu_type   = cpu_info[1]
      @cpu_vendor = cpu_info[2].downcase.to_sym
      @cpu_speed  = Float(cpu_info[3])
    end

    @cpu_count = Integer(`sysctl hw.ncpu`[/\d+/])
    os, release, build = `sw_vers`.scan(/:\t(.*)$/).flatten
    @distribution = "#{os} #{release} (#{build})"
  when 'linux'
    cpu_info = File.read("/proc/cpuinfo")

    @cpu_vendor = cpu_info[/vendor_id:\s+\s+(Genuine)?(\w+)/, 2]
    model_name  = cpu_info.match(/model name\s+:\s+((\w+).*) @ (\d+.\d+)GHz/)
    if model_name
      @cpu_type   = model_name[1].gsub(/\s+/, ' ')
      @cpu_vendor = model_name[2].downcase.to_sym
      @cpu_speed  = Float(model_name[3])
    end

    cores = cpu_info.scan(/core id\s+: \d+/).uniq.size
    @cpu_count = cores > 0 ? cores : 1
    @distribution = discover_distribution
  else
    @cpu_type = @cpu_vendor = @cpu_speed = @cpu_count = nil
  end

  case RUBY_ENGINE
  when 'ruby'
    @ruby_platform = "ruby #{RUBY_VERSION}"
  when 'jruby'
    @ruby_platform = "jruby #{JRUBY_VERSION}"
  when 'rbx'
    @ruby_platform = "rbx #{Rubinius::VERSION}"
  else
    @ruby_platform = RUBY_ENGINE
  end
end

Instance Attribute Details

#cpu_arch ⇒ Object (readonly)

Returns the value of attribute cpu_arch.



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# File 'lib/dcell/info_service.rb', line 7

def cpu_arch
  @cpu_arch
end

#cpu_count ⇒ Object (readonly)

Returns the value of attribute cpu_count.



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# File 'lib/dcell/info_service.rb', line 7

def cpu_count
  @cpu_count
end

#cpu_speed ⇒ Object (readonly)

Returns the value of attribute cpu_speed.



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# File 'lib/dcell/info_service.rb', line 7

def cpu_speed
  @cpu_speed
end

#cpu_type ⇒ Object (readonly)

Returns the value of attribute cpu_type.



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# File 'lib/dcell/info_service.rb', line 7

def cpu_type
  @cpu_type
end

#cpu_vendor ⇒ Object (readonly)

Returns the value of attribute cpu_vendor.



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# File 'lib/dcell/info_service.rb', line 7

def cpu_vendor
  @cpu_vendor
end

#distribution ⇒ Object (readonly)

Returns the value of attribute distribution.



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# File 'lib/dcell/info_service.rb', line 6

def distribution
  @distribution
end

#hostname ⇒ Object (readonly)

Returns the value of attribute hostname.



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# File 'lib/dcell/info_service.rb', line 6

def hostname
  @hostname
end

#os ⇒ Object (readonly)

Returns the value of attribute os.



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# File 'lib/dcell/info_service.rb', line 6

def os
  @os
end

#os_version ⇒ Object (readonly)

Returns the value of attribute os_version.



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# File 'lib/dcell/info_service.rb', line 6

def os_version
  @os_version
end

#platform ⇒ Object (readonly)

Returns the value of attribute platform.



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# File 'lib/dcell/info_service.rb', line 6

def platform
  @platform
end

#ruby_engine ⇒ Object (readonly)

Returns the value of attribute ruby_engine.



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# File 'lib/dcell/info_service.rb', line 8

def ruby_engine
  @ruby_engine
end

#ruby_platform ⇒ Object (readonly)

Returns the value of attribute ruby_platform.



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# File 'lib/dcell/info_service.rb', line 8

def ruby_platform
  @ruby_platform
end

#ruby_version ⇒ Object (readonly)

Returns the value of attribute ruby_version.



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# File 'lib/dcell/info_service.rb', line 8

def ruby_version
  @ruby_version
end

Instance Method Details

#discover_distribution ⇒ Object 



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# File 'lib/dcell/info_service.rb', line 93

def discover_distribution
  `lsb_release -d`[/Description:\s+(.*)\s*$/, 1]
rescue Errno::ENOENT
end

#load_averages(uptime_string = `uptime`) ⇒ Object Also known as: load_average 



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# File 'lib/dcell/info_service.rb', line 69

def load_averages(uptime_string = `uptime`)
  matches = uptime_string.match(UPTIME_REGEX)
  unless matches
    Logger.warn "Couldn't parse uptime output: #{uptime_string}"
    return
  end

  averages = matches[4].strip
  averages.split(/,? /).map(&:to_f)
end

#to_hash ⇒ Object 



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# File 'lib/dcell/info_service.rb', line 98

def to_hash
  uptime_string = `uptime`

  {
    :os            => os,
    :os_version    => os_version,
    :hostname      => hostname,
    :platform      => platform,
    :distribution  => distribution,
    :ruby_version  => ruby_version,
    :ruby_engine   => ruby_engine,
    :ruby_platform => ruby_platform,
    :load_averages => load_averages(uptime_string),
    :uptime        => uptime(uptime_string),
    :cpu => {
      :arch   => cpu_arch,
      :type   => cpu_type,
      :vendor => cpu_vendor,
      :speed  => cpu_speed,
      :count  => cpu_count
    }
  }
end

#uptime(uptime_string = `uptime`) ⇒ Object 



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# File 'lib/dcell/info_service.rb', line 81

def uptime(uptime_string = `uptime`)
  matches = uptime_string.match(UPTIME_REGEX)
  unless matches
    Logger.warn "Couldn't parse uptime output: #{uptime_string}"
    return
  end

  uptime = matches[1]
  days_string = uptime[/^(\d+) days/, 1]
  days_string ? Integer(days_string) : 0
end