|
module Foreman::Model
|
|
class Libvirt < ComputeResource
|
|
|
|
validates_format_of :url, :with => URI.regexp
|
|
|
|
# we default to destroy the VM's storage as well.
|
|
def destroy_vm uuid, args = { }
|
|
find_vm_by_uuid(uuid).destroy({ :destroy_volumes => true }.merge(args))
|
|
rescue ::Libvirt::RetrieveError => e
|
|
true
|
|
end
|
|
|
|
def self.model_name
|
|
ComputeResource.model_name
|
|
end
|
|
|
|
def max_cpu_count
|
|
hypervisor.cpus
|
|
end
|
|
|
|
# libvirt reports in KB
|
|
def max_memory
|
|
hypervisor.memory * 1024
|
|
rescue => e
|
|
logger.debug "unable to figure out free memory, guessing instead due to:#{e}"
|
|
16*1024*1024*1024
|
|
end
|
|
|
|
def test_connection
|
|
super
|
|
errors[:url].empty? and hypervisor
|
|
rescue => e
|
|
disconnect rescue nil
|
|
errors[:base] << e.message
|
|
end
|
|
|
|
def new_nic attr={ }
|
|
client.nics.new attr
|
|
end
|
|
|
|
def new_volume attr={ }
|
|
client.volumes.new attr
|
|
end
|
|
|
|
def storage_pools
|
|
client.pools rescue []
|
|
end
|
|
|
|
def networks
|
|
client.interfaces rescue []
|
|
end
|
|
|
|
def new_vm attr={ }
|
|
opts = vm_instance_defaults.merge(attr.to_hash).symbolize_keys
|
|
|
|
# convert rails nested_attributes into a plain hash
|
|
[:nics, :volumes].each do |collection|
|
|
nested_attrs = opts.delete("#{collection}_attributes".to_sym)
|
|
opts[collection] = nested_attributes_for(collection, nested_attrs) if nested_attrs
|
|
end
|
|
|
|
opts.reject! { |k, v| v.nil? }
|
|
|
|
client.servers.new opts
|
|
end
|
|
|
|
def create_vm args = { }
|
|
vm = new_vm(args)
|
|
create_volumes :prefix => vm.name, :volumes => vm.volumes
|
|
|
|
vm.save
|
|
rescue Fog::Errors::Error => e
|
|
errors.add(:base, e.to_s)
|
|
false
|
|
end
|
|
|
|
def console uuid
|
|
vm = find_vm_by_uuid(uuid)
|
|
raise "VM is not running!" unless vm.ready?
|
|
raise "Spice display is not supported at the moment" if vm.display[:type] =~ /spice/i
|
|
password = random_password
|
|
vm.update_display(:password => password, :listen => '0')
|
|
VNCProxy.start :host => hypervisor.hostname, :host_port => vm.display[:port], :password => password
|
|
rescue ::Libvirt::Error => e
|
|
if e.message =~ /cannot change listen address/
|
|
logger.warn e
|
|
raise "Unable to change VM display listen address, make sure the display is not attached to localhost only"
|
|
else
|
|
raise e
|
|
end
|
|
end
|
|
|
|
def hypervisor
|
|
client.nodes.first
|
|
end
|
|
|
|
protected
|
|
|
|
def client
|
|
# WARNING potential connection leak
|
|
Thread.current[url] ||= ::Fog::Compute.new(:provider => "Libvirt", :libvirt_uri => url)
|
|
end
|
|
|
|
def disconnect
|
|
client.terminate if Thread.current[url]
|
|
Thread.current[url] = nil
|
|
end
|
|
|
|
def vm_instance_defaults
|
|
{
|
|
:memory => 768*1024*1024,
|
|
:boot_order => %w[network hd],
|
|
:nics => [new_nic],
|
|
:volumes => [new_volume],
|
|
:display => { :type => 'vnc', :listen => '0', :password => random_password, :port => '-1' }
|
|
}
|
|
end
|
|
|
|
def create_volumes args
|
|
vols = []
|
|
(volumes = args[:volumes]).each do |vol|
|
|
vol.name = "#{args[:prefix]}-disk#{volumes.index(vol)+1}"
|
|
vol.allocation = "0G"
|
|
vol.save
|
|
vols << vol
|
|
end
|
|
vols
|
|
rescue => e
|
|
logger.debug "Failure detected #{e}: removing already created volumes" if vols.any?
|
|
vols.each { |vol| vol.destroy }
|
|
raise e
|
|
end
|
|
|
|
end
|
|
end
|