def retrieve(self, entity, extras):
"""
Retrieve a VM.
"""
uid = entity.attributes['occi.core.id']
context = extras['nova_ctx']
instance = vm.get_vm(uid, context)
LOG.debug('Retrieving an Virtual machine: ', uid)
# set state and applicable actions!
state, actions = vm.get_occi_state(uid, context)
entity.attributes['occi.compute.state'] = state
entity.actions = actions
# set up to date attributes
entity.attributes['occi.compute.cores'] = str(instance['vcpus'])
value = str(float(instance['memory_mb']) / 1024)
entity.attributes['occi.compute.memory'] = value
#Now we have the instance state, get its updated network info
net_info = net.get_adapter_info(uid, context)
attach_to_default_network(net_info, entity, extras)
# add consoles and storage links
set_console_info(entity, uid, extras)
def action(self, entity, action, attributes, extras):
"""
Perform an action.
"""
# As there is no callback mechanism to update the state
# of computes known by occi, a call to get the latest representation
# must be made.
context = extras['nova_ctx']
uid = entity.attributes['occi.core.id']
# set state and applicable actions - so even if the user hasn't done
# a GET het can still the most applicable action now...
state, actions = vm.get_occi_state(uid, context)
entity.attributes['occi.compute.state'] = state
entity.actions = actions
if action not in entity.actions:
raise AttributeError("This action is currently not applicable.")
elif action == infrastructure.START:
vm.start_vm(uid, context)
elif action == infrastructure.STOP:
vm.stop_vm(uid, context)
elif action == infrastructure.RESTART:
if not 'method' in attributes:
raise AttributeError('Please provide a method!')
method = attributes['method']
vm.restart_vm(uid, method, context)
elif action == infrastructure.SUSPEND:
vm.suspend_vm(uid, context)
