Class: Guignol::Models::Volume

Inherits:
Base
  • Object
show all
Defined in:
lib/guignol/models/volume.rb

Defined Under Namespace

Classes: Error

Instance Attribute Summary

Attributes inherited from Base

#connection, #name, #options, #subject

Instance Method Summary collapse

Methods inherited from Base

#exist?, #initialize, #state, #uuid

Constructor Details

This class inherits a constructor from Guignol::Models::Base

Instance Method Details

#attach(server_id) ⇒ Object 



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# File 'lib/guignol/models/volume.rb', line 48

def attach(server_id)
  exist? or create
  subject.reload

  if subject.server_id == server_id
    if subject.device == options[:dev]
      log "volume already attached"
      return
    else
      log "error: volume attached to device #{subject.device} instead of options[:dev]"
      raise Error.new('already attached')
    end
  end

  response = connection.attach_volume(server_id, subject.id, options[:dev])
  response.status == 200 or raise Error.new('failed to attach volume')
  update_tags
  return self
end

#availability_zone ⇒ Object 



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# File 'lib/guignol/models/volume.rb', line 13

def availability_zone
  subject && subject.availability_zone
end

#create ⇒ Object 



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# File 'lib/guignol/models/volume.rb', line 18

def create
  log "volume already exists" and return self if exist?

  log "creating volume"
  create_options = Guignol::DefaultVolumeOptions.merge options.slice(:availability_zone, :size, :snapshot, :delete_on_termination)
  set_subject connection.volumes.create(create_options)
  update_tags

  wait_for_state 'available'
  return self
rescue Exception => e
  log "error while creating (#{e.class.name})"
  destroy
  raise
end

#destroy ⇒ Object 



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# File 'lib/guignol/models/volume.rb', line 35

def destroy
  return self unless exist?

  log "destroying volume"
  subject.destroy
  wait_for_state 'deleted'
  # FIXME: remove tags here

  set_subject nil
  return self
end