def alloc_new(self,name, configspec, vmitype, chefmode=True):
'''Allocates a new cluster.
@param name - name for the cluster (ideally unique)
@param configspec - a ConfigSpec instance
@param vmitype - string specifying vmi type (supported: 'vagrant')
'''
cid = self._db.insert({})
try:
configspec.validate()
cluster = Cluster( name, configspec, cid, chefmode=chefmode )
VMI.Create(vmitype, cluster)
self._db.update(
{ '_id' : cluster.id() },
{ u'name' : name,
u'config' : configspec.jsonmap,
u'vmi' : cluster.get_vmi().jsonmap(),
u'machines' : cluster.machines()} )
except Exception as exc:
import traceback
Log.error('Cluster creation failed: %s' % exc)
Log.error( traceback.format_exc() )
self._db.remove( { '_id' : cid } )
raise Exception('Failed to create cluster: %s' % name)
return cluster
