Class: Dcmgr::Models::MacLease

Inherits:
BaseNew
  • Object
show all
Defined in:
lib/dcmgr/models/mac_lease.rb

Overview

MAC address lease information

Constant Summary

Constants inherited from BaseNew

BaseNew::LOCK_TABLES_KEY

Class Method Summary collapse

Methods inherited from BaseNew

Proxy, dataset, default_row_lock_mode=, install_data, install_data_hooks, lock!, #to_hash, unlock!, #with_timestamps?

Class Method Details

.default_vendor_id(hypervisor) ⇒ Object

show default vendor ID for the hypervisor. The virtual interface can be applied any valid MAC address. But using the well known vendor IDs for hypervisor have some benefits. For example, 70-persistent-net.rules issue can be avoided with newer udev release.



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# File 'lib/dcmgr/models/mac_lease.rb', line 29

def self.default_vendor_id(hypervisor)
  case hypervisor.to_sym
  when :kvm
    '525400'
  when :lxc
    # LXC is not known with the specific vendor ID. This may be wrong.
    '525400'
  else
    raise "Unknown hypervisor name: #{hypervisor}"
  end
end

.lease(mac_addr) ⇒ Object

register MAC address.



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# File 'lib/dcmgr/models/mac_lease.rb', line 9

def self.lease(mac_addr)
  case mac_addr.size
  when 12
  when 6
    # Assign bottom 6 device ID dynamically.
    vendor_id = mac_addr.dup
    begin
      mac_addr = vendor_id + ("%02x%02x%02x" % [rand(0xff),rand(0xff),rand(0xff)])
    end while self.find(:mac_addr=> mac_addr)
  else
    raise ArgumentError, "Invalid MAC address string: 6 or 12 length of HEX value is needed."
  end
  create(:mac_addr=>mac_addr)
end