def test_change_error(self):
change = pebble.Change(
id=pebble.ChangeID('1234'),
kind='start',
summary='Start service "foo"',
status='Done',
tasks=[],
ready=True,
err=None,
spawn_time=datetime.datetime.now(),
ready_time=datetime.datetime.now(),
)
error = pebble.ChangeError('Some error', change)
self.assertIsInstance(error, pebble.Error)
self.assertEqual(error.err, 'Some error')
self.assertEqual(error.change, change)
self.assertEqual(str(error), 'Some error')
def start_services(
self,
services: typing.List[str],
timeout: float = 30.0,
delay: float = 0.1,
) -> pebble.ChangeID:
# A common mistake is to pass just the name of a service, rather than a list of services,
# so trap that so it is caught quickly.
if isinstance(services, str):
raise TypeError(
'start_services should take a list of names, not just "{}"'.
format(services))
# Note: jam 2021-04-20 We don't implement ChangeID, but the default caller of this is
# Container.start() which currently ignores the return value
known_services = self._render_services()
# Names appear to be validated before any are activated, so do two passes
for name in services:
if name not in known_services:
# TODO: jam 2021-04-20 This needs a better error type
raise RuntimeError(
'400 Bad Request: service "{}" does not exist'.format(
name))
current = self._service_status.get(name,
pebble.ServiceStatus.INACTIVE)
if current == pebble.ServiceStatus.ACTIVE:
# TODO: jam 2021-04-20 I believe pebble actually validates all the service names
# can be started before starting any, and gives a list of things that couldn't
# be done, but this is good enough for now
raise pebble.ChangeError(
'''\
cannot perform the following tasks:
- Start service "{}" (service "{}" was previously started)
'''.format(name, name),
change=1234) # the change id is not respected
for name in services:
# If you try to start a service which is started, you get a ChangeError:
# $ PYTHONPATH=. python3 ./test/pebble_cli.py start serv
# ChangeError: cannot perform the following tasks:
# - Start service "serv" (service "serv" was previously started)
self._service_status[name] = pebble.ServiceStatus.ACTIVE
def stop_services(
self,
services: typing.List[str],
timeout: float = 30.0,
delay: float = 0.1,
) -> pebble.ChangeID:
# handle a common mistake of passing just a name rather than a list of names
if isinstance(services, str):
raise TypeError(
'stop_services should take a list of names, not just "{}"'.
format(services))
# TODO: handle invalid names
# Note: jam 2021-04-20 We don't implement ChangeID, but the default caller of this is
# Container.stop() which currently ignores the return value
known_services = self._render_services()
for name in services:
if name not in known_services:
# TODO: jam 2021-04-20 This needs a better error type
# 400 Bad Request: service "bal" does not exist
raise RuntimeError(
'400 Bad Request: service "{}" does not exist'.format(
name))
current = self._service_status.get(name,
pebble.ServiceStatus.INACTIVE)
if current != pebble.ServiceStatus.ACTIVE:
# TODO: jam 2021-04-20 I believe pebble actually validates all the service names
# can be started before starting any, and gives a list of things that couldn't
# be done, but this is good enough for now
raise pebble.ChangeError(
'''\
ChangeError: cannot perform the following tasks:
- Stop service "{}" (service "{}" is not active)
'''.format(name, name),
change=1234) # the change id is not respected
for name in services:
self._service_status[name] = pebble.ServiceStatus.INACTIVE