def only_once(action=None):
"""
Register the decorated function to be run once, and only once.
This decorator will never cause arguments to be passed to the handler.
"""
if action is None:
# allow to be used as @only_once or @only_once()
return only_once
action_id = _action_id(action)
handler = Handler.get(action)
handler.add_predicate(lambda: not was_invoked(action_id))
handler.add_post_callback(partial(mark_invoked, action_id))
return action
def only_once(action=None):
"""
Register the decorated function to be run once, and only once.
This decorator will never cause arguments to be passed to the handler.
"""
if action is None:
# allow to be used as @only_once or @only_once()
return only_once
action_id = _action_id(action)
handler = Handler.get(action)
handler.add_predicate(lambda: not was_invoked(action_id))
handler.add_post_callback(partial(mark_invoked, action_id))
return action
def only_once(action=None):
"""
.. deprecated:: 0.5.0
Use :func:`when_not` in combination with :func:`set_state` instead. This
handler is deprecated because it might actually be
`called multiple times <https://github.com/juju-solutions/charms.reactive/issues/22>`_.
Register the decorated function to be run once, and only once.
This decorator will never cause arguments to be passed to the handler.
"""
if action is None:
# allow to be used as @only_once or @only_once()
return only_once
action_id = _action_id(action)
handler = Handler.get(action)
handler.add_predicate(lambda: not was_invoked(action_id))
handler.add_post_callback(partial(mark_invoked, action_id))
return action
def sign_and_send(mconfig):
data = mconfig.get_worker_data()
central_ip = get_my_ip()
master_hostname = run_command('hostname')
signed_certs = {}
for unit in data:
worker_hostname = unit['worker_hostname']
if not was_invoked(worker_hostname):
mark_invoked(worker_hostname)
cert = unit['cert_to_sign']
worker_subnet = get_worker_subnet()
os.chdir('/tmp/')
cert_file = open('/tmp/ovncontroller-req.pem', 'w+')
cert_file.truncate(0)
cert_file.seek(0, 0)
cert_file.write(cert)
cert_file.close()
run_command(
'sudo ovs-pki -d /certs/pki -b sign ovncontroller switch --force'
)
cert_file = open('ovncontroller-cert.pem', 'r')
signed_cert = cert_file.read()
signed_certs[worker_hostname] = {
"central_ip": central_ip,
"signed_cert": signed_cert,
"master_hostname": master_hostname,
"worker_hostname": worker_hostname,
"worker_subnet": worker_subnet,
}
mconfig.send_signed_certs(signed_certs)
def only_once(handler_id):
"""
Check if handler has already been run in the past.
"""
return not helpers.was_invoked(handler_id)
def wrapper(*args, **kwargs):
action_id = _action_id(action)
if not was_invoked(action_id):
action(*args, **kwargs)
mark_invoked(action_id)