def status(cls, name=None):
fields = ['name', 'power', 'image', 'user', 'description']
if name:
nodes = [db.get(cls._resource_name(), name)]
else:
nodes = db.list(cls._resource_name())
nodes.sort(key=lambda node: node['name'])
for node in nodes:
try:
node['power'] = drivers.get(node).status()
except exceptions.DriverFailed:
node['power'] = '(unkown)'
utils.print_table(fields, nodes)
def destroy(cls, name):
cls._check_permission(name)
node = db.get(cls._resource_name(), name)
drivers.get(node).destroy()
def shutdown(cls, name):
cls._check_permission(name)
node = db.get(cls._resource_name(), name)
drivers.get(node).shutdown()
def acquire(cls, name):
user = utils.get_username()
node = db.get(cls._resource_name(), name)
if node['user']:
raise Exception("Node %s is occupied." % name)
db.update(cls._resource_name(), name, user=user)
def _check_permission(cls, name):
user = utils.get_username()
node = db.get(cls._resource_name(), name)
if user not in (node['user'], 'root'):
raise Exception("You don't have permission.")
return node