Class: Dcmgr::Models::IpLease

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

Overview

IP address lease information

Constant Summary collapse

TYPE_AUTO = 
0
TYPE_RESERVED = 
1
TYPE_MANUAL = 
2

Constants inherited from BaseNew

BaseNew::LOCK_TABLES_KEY

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from BaseNew

Proxy, dataset, install_data, install_data_hooks, lock!, unlock!

Class Method Details

.lease(instance_nic, network) ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/dcmgr/models/ip_lease.rb', line 39

def self.lease(instance_nic, network)
  raise TypeError unless instance_nic.is_a?(InstanceNic)
  raise TypeError unless network.is_a?(Network)
  
  gwaddr = network.ipaddress
  reserved = [gwaddr]
  reserved = reserved.map {|i| i.to_u32 }
  # use SELECT FOR UPDATE to lock rows within same network.
  addrs = (gwaddr.network.first.to_u32 .. gwaddr.network.last.to_u32).to_a -
    reserved - network.ip_lease_dataset.for_update.all.map {|i| IPAddress::IPv4.new(i.ipv4).to_u32 }
  raise "Out of free IP address in this network segment: #{gwaddr.network.to_s}/#{gwaddr.prefix}" if addrs.empty?
  
  leaseaddr = IPAddress::IPv4.parse_u32(addrs[rand(addrs.size).to_i])
  create(:ipv4=>leaseaddr.to_s, :network_id=>network.id, :instance_nic_id=>instance_nic.id)
end

Instance Method Details

#validate ⇒ Object 



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# File 'lib/dcmgr/models/ip_lease.rb', line 26

def validate
  # validate ipv4 syntax
  begin
    addr = IPAddress::IPv4.new("#{self.ipv4}")
    # validate if ipv4 is in the range of network_id.
    unless network.ipaddress.network.include?(addr)
      errors.add(:ipv4, "IP address #{addr} is out of range: #{network.canonical_uuid})")
    end
  rescue => e
    errors.add(:ipv4, "Invalid IP address syntax: #{self.ipv4} (#{e})")
  end
end