Class: MiqLinux::Utils

Inherits:
Object
  • Object
show all
Defined in:
lib/metadata/linux/LinuxUtils.rb

Class Method Summary collapse

Class Method Details

.collect_interface(interfaces, interface) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 165

def self.collect_interface(interfaces, interface)
  mac_addr = interface[:mac_address]
  return if mac_addr.blank?

  existing_interface = interfaces[mac_addr]
  if existing_interface.blank?
    interfaces[mac_addr] = interface
  else
    interface[:name] += "," + existing_interface[:name]
    existing_interface.merge!(interface)
  end
end

.merge_openstack_services(systemctl_services, containerized_services) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 251

def self.merge_openstack_services(systemctl_services, containerized_services)
  # Merge outputs 2 arrays with systemctl and containerized services, example:
  # systemctl_services = [{"name"=>"Swift", "services"=> [{"name"=>"openstack-swift-proxy", "active"=>true, "enabled"=>true}]
  # containerized_services = [{"name"=>"Swift", "services"=> [{"name"=>"swift_container_auditor", "active"=>true, "enabled"=>true}]
  # result is [{"name"=>"Swift", "services"=> [{"name"=>"openstack-swift-proxy", "active"=>true, "enabled"=>true},
  #                                            {"name"=>"swift_container_auditor", "active"=>true, "enabled"=>true}]

  all_services = systemctl_services + containerized_services

  service_names = all_services.map { |service| service['name'] }.uniq

  service_names.each do |name|
    merged_service = { "name" => name, "services" => [] }
    common_services = all_services.select { |service| service['name'] == name }

    common_services.each do |common_service|
      merged_service["services"].concat(common_service["services"])
      all_services.delete(common_service)
    end
    all_services << merged_service
  end

  all_services
end

.octal_to_permissions(octal, ftype = nil) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 65

def self.octal_to_permissions(octal, ftype = nil)
  perms = ""

  unless ftype.nil?
    ftype = ftype[0, 1]
    ftype = '-' if ftype == 'f'
    perms << ftype
  end

  octal = octal.to_i(8) if octal.kind_of?(String)

  perms << (octal & 00400 != 0 ? 'r' : '-')
  perms << (octal & 00200 != 0 ? 'w' : '-')
  perms << (octal & 04000 != 0 ? (octal & 00100 != 0 ? 's' : 'S') : octal & 00100 != 0 ? 'x' : '-')
  perms << (octal & 00040 != 0 ? 'r' : '-')
  perms << (octal & 00020 != 0 ? 'w' : '-')
  perms << (octal & 02000 != 0 ? (octal & 00010 != 0 ? 's' : 'S') : octal & 00010 != 0 ? 'x' : '-')
  perms << (octal & 00004 != 0 ? 'r' : '-')
  perms << (octal & 00002 != 0 ? 'w' : '-')
  perms << (octal & 01000 != 0 ? (octal & 00001 != 0 ? 't' : 'T') : octal & 00001 != 0 ? 'x' : '-')

  perms
end

.parse_chkconfig_list(lines) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 89

def self.parse_chkconfig_list(lines)
  ret = []
  return ret if lines.nil? || lines.empty?

  lines.each_line do |line|
    line = line.chomp
    parts = line.split(' ')
    next unless parts.length >= 8

    enable_level = []
    disable_level = []

    parts[1..-1].each do |part|
      level, state = part.split(':')
      case state
      when 'on'  then enable_level << level
      when 'off' then disable_level << level
      end
    end

    nh = {:name => parts[0]}
    nh[:enable_run_level]  = enable_level.empty? ? nil : enable_level.sort
    nh[:disable_run_level] = disable_level.empty? ? nil : disable_level.sort

    ret << nh
  end

  ret
end

.parse_docker_ps_list(lines) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 144

def self.parse_docker_ps_list(lines)
  return [] if lines.blank?

  lines.each_line.map do |line|
    line = line.chomp
    parts = line.split(/^(\S+)\s/)

    name, = parts[1]

    {:name              => name,
     :systemd_load      => 'container',
     :systemd_active    => parts[2]&.strip&.start_with?('Up') ? 'active' : 'failed',
     :systemd_sub       => parts[2]&.strip&.start_with?('Up') ? 'running' : 'failed',
     :typename          => 'docker_container',
     :description       => parts[1] + ' ' + parts[2].strip,
     :enable_run_level  => nil,
     :disable_run_level => nil,
     :running           => parts[2]&.strip&.start_with?('Up')}
  end.compact
end

.parse_ls_l_fulltime(lines) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 3

def self.parse_ls_l_fulltime(lines)
  ret = []
  return ret if lines.nil? || lines.empty?

  lines.each do |line|
    line = line.chomp
    parts = line.split(' ')
    next unless parts.length >= 9

    perms, ftype = permissions_to_octal(parts[0])

    ret << {
      :ftype       => ftype,
      :permissions => perms,
      :hard_links  => perms[1],
      :owner       => parts[2],
      :group       => parts[3],
      :size        => parts[4],
      :mtime       => Time.parse(parts[5..7].join(' ')).utc,
      :name        => parts[8..-1].join(' '),
    }
  end

  ret
end

.parse_network_interface_list(lines) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 178

def self.parse_network_interface_list(lines)
  return [] if lines.blank?

  interfaces = {}
  interface = {}
  lines.each_line do |line|
    if /^\d+\:\s([\w-]+)\:.*?mtu\s(\d+).*?$/ =~ line
      collect_interface(interfaces, interface) unless interface.blank?
      interface = {:name => $1}
    elsif /^.*?link.*?((\w\w\:)+\w\w).*?$/ =~ line
      interface[:mac_address] = $1
    elsif /^.*?inet\s((\d+\.)+\d+).*?$/ =~ line
      interface[:fixed_ip] = $1
    elsif /^.*?inet6\s((\w*\:+)+\w+).*?$/ =~ line
      interface[:fixed_ipv6] = $1
    end
  end
  collect_interface(interfaces, interface)

  interfaces.values
end

.parse_openstack_container_status(lines) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 220

def self.parse_openstack_container_status(lines)
  containers = lines.to_s.split("\n").group_by do |t|
    if t.include?('_')
      t.split("_")[0]
    elsif t.start_with?('openstack')
      t.split("-")[1]
    elsif t.include?('-')
      t.split("-")[0]
    else
      t.split(" ")[0]
    end
  end

  containers.map do |title, services|
    services = services.map { |service_line| service_line.split(/^(\S+)\s/) } # split service line by first space and strip white space from results

    services = services.map do |service|
      {
        'name'    => service[1],
        'active'  => service[2].strip.start_with?('Up'),
        'enabled' => true
      }
    end

    {
      'name'     => title.capitalize,
      'services' => services
    }
  end
end

.parse_openstack_status(lines) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 200

def self.parse_openstack_status(lines)
  lines = lines.to_s.split("\n").reject { |t| t.include?("=") }.group_by { |t| t.gsub(/openstack\-([a-z]+).*/i, '\1') }
  lines.map do |title, services|
    services = services.map { |service_line| service_line.split(/[:\(\)]/).map(&:strip) } # split service line by :, ( and ) and strip white space from results

    services = services.map do |service|
      {
        'name'    => service.first,
        'active'  => service[1] == 'active',
        'enabled' => service[2] !~ /disabled/
      }
    end

    {
      'name'     => title.capitalize,
      'services' => services
    }
  end
end

.parse_systemctl_list(lines) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 119

def self.parse_systemctl_list(lines)
  return [] if lines.blank?

  lines.each_line.map do |line|
    line = line.chomp
    parts = line.split(' ')
    next if (/^.*?\.service$/ =~ parts[0]).nil?

    name, = parts[0].split('.')

    # TODO(lsmola) investigate adding systemd targets, which are used instead of runlevels. Drawback, it's not
    # returned by any command, so we would have to parse the dir structure of /etc/systemd/system/
    # There is already MiqLinux::Systemd.new(@systemFs) called from class MIQExtract, we should leverage that
    {:name              => name,
     :systemd_load      => parts[1],
     :systemd_active    => parts[2],
     :systemd_sub       => parts[3],
     :typename          => 'linux_systemd',
     :description       => parts[4..-1].join(" "),
     :enable_run_level  => nil,
     :disable_run_level => nil,
     :running           => parts[3] == 'running'}
  end.compact
end

.permissions_to_octal(perms) ⇒ Object 



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# File 'lib/metadata/linux/LinuxUtils.rb', line 29

def self.permissions_to_octal(perms)
  if perms.length == 9
    ftype = nil
  elsif perms.length == 10
    ftype = perms[0, 1]
    perms = perms[1..-1]
  elsif perms.length == 11
    # TODO: when se-linux is present, the format is like this '-rw-rw-r--.', . means an SELinux ACL. (+ means a
    # general ACL.). I need to figure out where to store this fact, ignoring it for now
    ftype = perms[0, 1]
    perms = perms[1..-2]
  else
    raise "Invalid perms length"
  end

  unless ftype.nil?
    ftype = case ftype
            when 'd' then 'dir'
            when 'l' then 'link'
            else          'file'
            end
  end

  octal = [0, 0, 0, 0]
  perms.split(//).each_with_index do |c, i|
    # puts [c, i, i % 3, 2 - (i % 3), 2 ** (2 - (i % 3)), i / 3, 2 - (i / 3), 2 ** (2 - (i / 3))].inspect
    octal[i / 3 + 1] += 2**(2 - (i % 3)) unless %w(- S T).include?(c)
    # puts octal.inspect
    octal[0] += 2**(2 - (i / 3)) if %w(s t S T).include?(c)
    # puts octal.inspect
  end
  octal = octal.join

  return octal, ftype
end