Class: OneWorker

Inherits:
Object
  • Object
show all
Includes:
Sidekiq::Worker
Defined in:
lib/one_worker.rb

Overview

Sidekiq worker class

Constant Summary collapse

B_IN_GB = 
1_073_741_824
STRING = 
/[[:print:]]+/
NUMBER = 
/[[:digit:]]+/
NON_ZERO = 
/[1-9][[:digit:]]*/
STATES = 
%w(started started suspended started suspended suspended completed completed suspended)

Instance Method Summary collapse

Instance Method Details

#common_data ⇒ Object

Prepare data that are common for every virtual machine



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# File 'lib/one_worker.rb', line 26

def common_data
  common_data = {}
  common_data['endpoint'] = Settings['endpoint']
  common_data['site_name'] = Settings['site_name']
  common_data['cloud_type'] = Settings['cloud_type']

  common_data
end

#create_image_map(oda) ⇒ Hash

Create mapping of image ID and specified element

Returns:

  • (Hash) —

    created map



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# File 'lib/one_worker.rb', line 46

def create_image_map(oda)
  logger.debug('Creating image map.')
  create_map(OpenNebula::ImagePool, 'TEMPLATE/VMCATCHER_EVENT_AD_MPURI', oda)
end

#create_map(pool_type, mapping, oda) ⇒ Object

Generic method for mapping creation



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# File 'lib/one_worker.rb', line 52

def create_map(pool_type, mapping, oda)
  oda.mapping(pool_type, mapping)
rescue => e
  msg = "Couldn't create map: #{e.message}. "\
        'Stopping to avoid malformed records.'
  logger.error(msg)
  raise msg
end

#create_user_map(oda) ⇒ Hash

Create mapping of user ID and specified element

Returns:

  • (Hash) —

    created map



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# File 'lib/one_worker.rb', line 38

def create_user_map(oda)
  logger.debug('Creating user map.')
  create_map(OpenNebula::UserPool, 'TEMPLATE/X509_DN', oda)
end

#load_vm(vm_id, oda) ⇒ OpenNebula::VirtualMachine

Load virtual machine with specified ID

Returns:

  • (OpenNebula::VirtualMachine) —

    virtual machine



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# File 'lib/one_worker.rb', line 64

def load_vm(vm_id, oda)
  oda.vm(vm_id)
rescue => e
  logger.error("Couldn't retrieve data for vm with id: #{vm_id}. #{e.message}. Skipping.")
  return nil
end

#mixin(vm) ⇒ NilClass, String

Look for 'os_tpl' OCCI mixin to better identifie virtual machine's image

Parameters:

  • vm (OpenNebula::VirtualMachine) —

    virtual machine

Returns:

  • (NilClass, String) —

    if found, mixin identifying string, nil otherwise



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# File 'lib/one_worker.rb', line 149

def mixin(vm)
  mixin_locations = %w(USER_TEMPLATE/OCCI_COMPUTE_MIXINS USER_TEMPLATE/OCCI_MIXIN TEMPLATE/OCCI_MIXIN)

  mixin_locations.each do |mixin_location|
    vm.each mixin_location do |mixin|
      mixin = mixin.text.split
      mixin.select! { |line| line.include? '/occi/infrastructure/os_tpl#' }
      return mixin.first unless mixin.empty?
    end
  end

  nil # nothing found
end

#parse(value, regex, substitute = 'NULL') ⇒ Object 



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# File 'lib/one_worker.rb', line 225

def parse(value, regex, substitute = 'NULL')
  regex =~ value ? value : substitute
end

#perform(vms, output) ⇒ Object

Sidekiq specific method, specifies the purpose of the worker

Parameters:

  • vms (String) —

    IDs of virtual machines to process in form of numbers separated by '|' (easier for cooperation with redis)

  • output (String) —

    output directory



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# File 'lib/one_worker.rb', line 188

def perform(vms, output)
  OneacctExporter::Log.setup_log_level(logger)

  vms = vms.split('|')

  oda = OneDataAccessor.new(logger)
  user_map = create_user_map(oda)
  image_map = create_image_map(oda)

  data = []

  vms.each do |vm_id|
    vm = load_vm(vm_id, oda)
    next unless vm

    logger.debug("Processing vm with id: #{vm_id}.")
    vm_data = process_vm(vm, user_map, image_map)
    next unless vm_data

    logger.debug("Adding vm with data: #{vm_data} for export.")
    data << vm_data
  end

  write_data(data, output)
end

#process_vm(vm, user_map, image_map) ⇒ Hash

Obtain and parse required data from vm

Returns:

  • (Hash) —

    required data from virtual machine



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# File 'lib/one_worker.rb', line 74

def process_vm(vm, user_map, image_map)
  data = common_data.clone

  data['vm_uuid'] = parse(vm['ID'], STRING)
  unless vm['STIME']
    logger.error('Skipping a malformed record. '\
                 "VM with id #{data['vm_uuid']} has no StartTime.")
    return nil
  end

  data['start_time'] = Time.at(parse(vm['STIME'], NUMBER).to_i)
  start_time = data['start_time'].to_i
  if start_time == 0
    logger.error('Skipping a malformed record. '\
                 "VM with id #{data['vm_uuid']} has malformed StartTime.")
    return nil
  end
  data['end_time'] = parse(vm['ETIME'], NON_ZERO)
  end_time = data['end_time'].to_i
  data['end_time'] = Time.at(end_time) if end_time != 0

  if end_time != 0 && start_time > end_time
    logger.error('Skipping malformed record. '\
                 "VM with id #{data['vm_uuid']} has wrong time entries.")
    return nil
  end

  data['machine_name'] = parse(vm['DEPLOY_ID'], STRING, "one-#{data['vm_uuid']}")
  data['user_id'] = parse(vm['UID'], STRING)
  data['group_id'] = parse(vm['GID'], STRING)
  data['user_name'] = parse(vm['USER_TEMPLATE/USER_X509_DN'], STRING, nil)
  data['user_name'] = parse(user_map[data['user_id']], STRING) unless data['user_name']
  data['fqan'] = parse(vm['GNAME'], STRING, nil)

  if vm['STATE']
    data['status'] = parse(STATES[vm['STATE'].to_i], STRING)
  else
    data['status'] = 'NULL'
  end

  unless vm['HISTORY_RECORDS/HISTORY[1]']
    logger.warn('Skipping malformed record. '\
                "VM with id #{data['vm_uuid']} has no history records.")
    return nil
  end

  rstime = sum_rstime(vm)
  return nil unless rstime

  data['duration'] = parse(rstime.to_s, NON_ZERO)

  suspend = (end_time - start_time) - data['duration'].to_i unless end_time == 0
  data['suspend'] = parse(suspend.to_s, NUMBER)

  vcpu = vm['TEMPLATE/VCPU']
  data['cpu_count'] = parse(vcpu, NON_ZERO, '1')

  net_tx = parse(vm['NET_TX'], NUMBER, 0)
  data['network_inbound'] = (net_tx.to_i / B_IN_GB).round
  net_rx = parse(vm['NET_RX'], NUMBER, 0)
  data['network_outbound'] = (net_rx.to_i / B_IN_GB).round

  data['memory'] = parse(vm['MEMORY'], NUMBER, '0')

  data['image_name'] = parse(image_map[vm['TEMPLATE/DISK[1]/IMAGE_ID']], STRING, nil)
  data['image_name'] = parse(mixin(vm), STRING) unless data['image_name']

  data
end

#sum_rstime(vm) ⇒ Integer

Sums RSTIME (time when virtual machine was actually running)

Parameters:

  • vm (OpenNebula::VirtualMachine) —

    virtual machine

Returns:

  • (Integer) —

    RSTIME



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# File 'lib/one_worker.rb', line 168

def sum_rstime(vm)
  rstime = 0
  vm.each 'HISTORY_RECORDS/HISTORY' do |h|
    next unless h['RSTIME'] && h['RETIME'] && h['RETIME'] != '0' && h['RSTIME'] != '0'
    if h['RSTIME'].to_i > h['RETIME'].to_i
      logger.warn('Skipping malformed record. '\
                  "VM with id #{vm['ID']} has wrong CpuDuration.")
      rstime = nil
      break
    end
    rstime += h['RETIME'].to_i - h['RSTIME'].to_i
  end

  rstime
end

#write_data(data, output) ⇒ Object

Write processed data into output directory



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# File 'lib/one_worker.rb', line 215

def write_data(data, output)
  logger.debug('Creating writer...')
  ow = OneWriter.new(data, output, logger)
  ow.write
rescue => e
  msg = "Cannot write result to #{output}: #{e.message}"
  logger.error(msg)
  raise msg
end