def define(self, name=None, **kwargs):
"""Define a hadoop stack.
"""
stackname = name or Default.generate_name(Names.STACK_COUNTER)
# remove None to defer default definitions to latter
for k in kwargs.keys():
if kwargs[k] is None:
del kwargs[k]
kwargs['local_path'] = os.path.join(
os.path.expanduser('~/.cloudmesh/stacks'), stackname)
try:
spec = db.select(SPECIFICATION, name=stackname, type='stack')[0]
spec.update(kwargs)
db.updateObj(spec)
except IndexError:
spec = SPECIFICATION(stackname, 'stack', kwargs)
db.insert(spec)
Default.set_stack(stackname)
Console.ok('Defined stack {}'.format(stackname))
def use(self, specname):
"""Activate the given specification
:param specname: namne of the specification
"""
spec = db.select(SPECIFICATION, type='stack', name=specname)[0]
Default.set_stack(spec.name)
