Class: Specinfra::Processor

Inherits:
Object
  • Object
show all
Defined in:
lib/specinfra/processor.rb

Class Method Summary collapse

Class Method Details

.check_file_is_executable(file, by_whom) ⇒ Object 



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# File 'lib/specinfra/processor.rb', line 67

def self.check_file_is_executable(file, by_whom)
  cmd  = Specinfra.command.get(:get_file_mode, file)
  mode = sprintf('%04s',Specinfra.backend.run_command(cmd).stdout.strip)
  mode = mode.split('')
  mode_octal = mode[0].to_i * 512 + mode[1].to_i * 64 + mode[2].to_i * 8 + mode[3].to_i * 1
  case by_whom.to_s
  when ''
    mode_octal & 0111 != 0
  when 'owner'
    mode_octal & 0100 != 0
  when 'group'
    mode_octal & 0010 != 0
  when 'others'
    mode_octal & 0001 != 0
  end
end

.check_file_is_mounted(path, expected_attr, only_with) ⇒ Object 



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# File 'lib/specinfra/processor.rb', line 84

def self.check_file_is_mounted(path, expected_attr, only_with)
  cmd = Specinfra.command.get(:check_file_is_mounted, path)
  ret = Specinfra.backend.run_command(cmd)
  if expected_attr.nil? || ret.failure?
    return ret.success?
  end

  mount = ret.stdout.scan(/\S+/)
  actual_attr = { }
  actual_attr[:device] = mount[0]
  # Output of mount depends on os:
  # a)  proc on /proc type proc (rw,noexec,nosuid,nodev)
  # b)  procfs on /proc (procfs, local)
  actual_attr[:type] = mount[4] if mount[3] == 'type' # case a.
  if match = ret.stdout.match(/\((.*)\)/)
    options = match[1].split(',')
    actual_attr[:type] ||= options.shift              # case b.
    options.each do |option|
      name, val = option.split('=')
      if val.nil?
        actual_attr[name.strip.to_sym] = true
      else
        val = val.to_i if val.match(/^\d+$/)
        actual_attr[name.strip.to_sym] = val
      end
    end
  end

  if ! expected_attr[:options].nil?
    expected_attr.merge!(expected_attr[:options])
    expected_attr.delete(:options)
  end

  if only_with
    actual_attr == expected_attr
  else
    expected_attr.each do |key, val|
      return false if actual_attr[key] != val
    end
    true
  end
end

.check_file_is_readable(file, by_whom) ⇒ Object 



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# File 'lib/specinfra/processor.rb', line 33

def self.check_file_is_readable(file, by_whom)
  cmd = Specinfra.command.get(:get_file_mode, file)
  mode = sprintf('%04s',Specinfra.backend.run_command(cmd).stdout.strip)
  mode = mode.split('')
  mode_octal = mode[0].to_i * 512 + mode[1].to_i * 64 + mode[2].to_i * 8 + mode[3].to_i * 1
  case by_whom.to_s
  when ''
    mode_octal & 0444 != 0
  when 'owner'
    mode_octal & 0400 != 0
  when 'group'
    mode_octal & 0040 != 0
  when 'others'
    mode_octal & 0004 != 0
  end
end

.check_file_is_writable(file, by_whom) ⇒ Object 



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# File 'lib/specinfra/processor.rb', line 50

def self.check_file_is_writable(file, by_whom)
  cmd = Specinfra.command.get(:get_file_mode, file)
  mode = sprintf('%04s',Specinfra.backend.run_command(cmd).stdout.strip)
  mode = mode.split('')
  mode_octal = mode[0].to_i * 512 + mode[1].to_i * 64 + mode[2].to_i * 8 + mode[3].to_i * 1
  case by_whom.to_s
  when ''
    mode_octal & 0222 != 0
  when 'owner'
    mode_octal & 0200 != 0
  when 'group'
    mode_octal & 0020 != 0
  when 'others'
    mode_octal & 0002 != 0
  end
end

.check_fstab_has_entry(expected_attr) ⇒ Object 



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# File 'lib/specinfra/processor.rb', line 127

def self.check_fstab_has_entry(expected_attr)
  return false unless expected_attr[:mount_point]
  cmd = Specinfra.command.get(:get_fstab_entry, expected_attr[:mount_point])
  ret = Specinfra.backend.run_command(cmd)
  return false if ret.failure?

  fstab = ret.stdout.scan(/\S+/)
  actual_attr = {
    :device      => fstab[0],
    :mount_point => fstab[1],
    :type        => fstab[2],
    :dump        => fstab[4].to_i,
    :pass        => fstab[5].to_i
  }
  fstab[3].split(',').each do |option|
    name, val = option.split('=')
    if val.nil?
      actual_attr[name.to_sym] = true
    else
      val = val.to_i if val.match(/^\d+$/)
      actual_attr[name.to_sym] = val
    end
  end

  unless expected_attr[:options].nil?
    expected_attr.merge!(expected_attr[:options])
    expected_attr.delete(:options)
  end

  expected_attr.each do |key, val|
    return false if actual_attr[key] != val
  end
  true
end

.check_routing_table_has_entry(expected_attr) ⇒ Object 



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# File 'lib/specinfra/processor.rb', line 162

def self.check_routing_table_has_entry(expected_attr)
  return false if ! expected_attr[:destination]
  cmd = Specinfra.command.get(:get_routing_table_entry, expected_attr[:destination])
  ret = Specinfra.backend.run_command(cmd)
  return false if ret.failure?

  ret.stdout.gsub!(/\r\n/, "\n")

  if os[:family] == 'openbsd'
    match = ret.stdout.match(/^(\S+)\s+(\S+).*?(\S+[0-9]+)(\s*)$/)
    actual_attr = {
      :destination => $1,
      :gateway     => $2,
      :interface   => expected_attr[:interface] ? $3 : nil
    }
  else
    matches = ret.stdout.scan(/^(\S+)(?: via (\S+))? dev (\S+).+\n|^(\S+).*\n|\s+nexthop via (\S+)\s+dev (\S+).+/)
    if matches.length > 1
      # ECMP route
      destination = nil
      matches.each do |groups|
        if groups[3]
          destination = groups[3]
          next
        end
        next if expected_attr[:gateway] && expected_attr[:gateway] != groups[4]
        next if expected_attr[:interface] && expected_attr[:interface] != groups[5]

        actual_attr = {
          :destination => destination,
          :gateway => groups[4],
          :interface => groups[5]
        }
      end
    elsif matches.length == 1
      # Non-ECMP route
      groups = matches[0]
      actual_attr = {
        :destination => groups[0],
        :gateway     => groups[1] ? groups[1] : groups[3],
        :interface   => expected_attr[:interface] ? groups[2] : nil
      }
    end

  end

  expected_attr.each do |key, val|
    return false if actual_attr[key] != val
  end
  true
end

.check_service_is_monitored_by_monit(process) ⇒ Object 



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# File 'lib/specinfra/processor.rb', line 21

def self.check_service_is_monitored_by_monit(process)
  cmd = Specinfra.command.get(:check_service_is_monitored_by_monit, process)
  ret = Specinfra.backend.run_command(cmd)
  return false unless ret.stdout != nil && ret.success?

  retlines = ret.stdout.split(/[\r\n]+/).map(&:strip)
  proc_index = retlines.index("Process '#{process}'")
  return false unless proc_index

  retlines[proc_index+2].match(/\Amonitoring status\s+monitored\Z/i) != nil
end

.check_service_is_running(service) ⇒ Object 



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# File 'lib/specinfra/processor.rb', line 3

def self.check_service_is_running(service)
  cmd = Specinfra.command.get(:check_service_is_running, service)
  ret = Specinfra.backend.run_command(cmd)

  # In Ubuntu, some services are under upstart and "service foo status" returns
  # exit status 0 even though they are stopped.
  # So return false if stdout contains "stopped/waiting" or "stop/waiting".
  return false if ret.stdout =~ /stop(ped)?\/waiting/

  # If the service is not registered, check by ps command
  if ret.exit_status == 1 && !Specinfra.configuration.no_service_process_fallback
    cmd = Specinfra.command.get(:check_process_is_running, service)
    ret = Specinfra.backend.run_command(cmd)
  end

  ret.success?
end

.get_default_gateway(attr) ⇒ Object 



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# File 'lib/specinfra/processor.rb', line 214

def self.get_default_gateway(attr)
  cmd = Specinfra.command.get(:get_routing_table_entry, 'default')
  ret = Specinfra.backend.run_command(cmd)
  return false if ret.failure?

  ret.stdout.gsub!(/\r\n/, "\n")

  if os[:family] == 'openbsd'
    match = ret.stdout.match(/^(\S+)\s+(\S+).*?(\S+[0-9]+)(\s*)$/)
    if attr == :gateway
      $2
    elsif attr == :interface
      $3
    end
  else
    ret.stdout =~ /^(\S+)(?: via (\S+))? dev (\S+).+\n(?:default via (\S+))?/
    if attr == :gateway
      $2 ? $2 : $4
    elsif attr == :interface
      $3
    end
  end
end