def modify_and_trigger(dispatcher, group, logargs, modifier, *args, **kwargs):
"""
Modify group state and trigger convergence after that if the group is not
suspended. Otherwise fail with :obj:`TenantSuspendedError`.
:param IScalingGroup group: Scaling group whose state is getting modified
:param log: Bound logger
:param modifier: Callable as described in IScalingGroup.modify_state
:return: Deferred with None if modification and convergence succeeded.
Fails with :obj:`TenantSuspendedError` if group is suspended.
"""
def modifier_wrapper(_group, state, *_args, **_kwargs):
# Ideally this will not be allowed by repose middleware but
# adding check for mimic based integration tests
if state.suspended:
raise TenantSuspendedError(_group.tenant_id)
return modifier(_group, state, *_args, **_kwargs)
cannot_exec_pol_err = None
try:
yield group.modify_state(modifier_wrapper, *args, **kwargs)
except CannotExecutePolicyError as ce:
cannot_exec_pol_err = ce
if tenant_is_enabled(group.tenant_id, config_value):
eff = Effect(
BoundFields(
trigger_convergence(group.tenant_id, group.uuid), logargs))
yield perform(dispatcher, eff)
if cannot_exec_pol_err is not None:
raise cannot_exec_pol_err
def modify_and_trigger(dispatcher, group, logargs, modifier, *args, **kwargs):
"""
Modify group state and trigger convergence after that if the group is not
suspended. Otherwise fail with :obj:`TenantSuspendedError`.
:param IScalingGroup group: Scaling group whose state is getting modified
:param log: Bound logger
:param modifier: Callable as described in IScalingGroup.modify_state
:return: Deferred with None if modification and convergence succeeded.
Fails with :obj:`TenantSuspendedError` if group is suspended.
"""
def modifier_wrapper(_group, state, *_args, **_kwargs):
# Ideally this will not be allowed by repose middleware but
# adding check for mimic based integration tests
if state.suspended:
raise TenantSuspendedError(_group.tenant_id)
return modifier(_group, state, *_args, **_kwargs)
cannot_exec_pol_err = None
try:
yield group.modify_state(modifier_wrapper, *args, **kwargs)
except CannotExecutePolicyError as ce:
cannot_exec_pol_err = ce
if tenant_is_enabled(group.tenant_id, config_value):
eff = Effect(
BoundFields(trigger_convergence(group.tenant_id, group.uuid),
logargs))
yield perform(dispatcher, eff)
if cannot_exec_pol_err is not None:
raise cannot_exec_pol_err
def test_success(self):
"""
Divergent flag is set with bound log and msg is logged
"""
seq = [
(CreateOrSet(path="/groups/divergent/t_g", content="dirty"), noop),
(Log("mark-dirty-success", {}), noop)
]
self.assertEqual(
perform_sequence(seq, trigger_convergence("t", "g")),
None)
def test_failure(self):
"""
If setting divergent flag errors, then error is logged and raised
"""
seq = [
(CreateOrSet(path="/groups/divergent/t_g", content="dirty"),
lambda i: raise_(ValueError("oops"))),
(LogErr(CheckFailureValue(ValueError("oops")),
"mark-dirty-failure", {}),
noop)
]
self.assertRaises(
ValueError, perform_sequence, seq, trigger_convergence("t", "g"))
def trigger_convergence_deletion(dispatcher, group, trans_id):
"""
Trigger deletion of group that belongs to convergence tenant
:param log: Bound logger
:param otter.models.interface.IScalingGroup scaling_group: the scaling
group object
"""
# Update group status and trigger convergence
# DELETING status will take precedence over other status
d = group.update_status(ScalingGroupStatus.DELETING)
eff = with_log(trigger_convergence(group.tenant_id, group.uuid),
tenant_id=group.tenant_id,
scaling_group_id=group.uuid,
transaction_id=trans_id)
d.addCallback(lambda _: perform(dispatcher, eff))
return d
def check_and_trigger(tenant_id, group_id):
"""
Trigger convergence on given group if it is ACTIVE and not paused
"""
try:
group, info = yield Effect(
GetScalingGroupInfo(tenant_id=tenant_id, group_id=group_id))
except NoSuchScalingGroupError:
# Nothing to do if group has been deleted
yield msg("selfheal-group-deleted",
tenant_id=tenant_id, scaling_group_id=group_id)
else:
state = info["state"]
if state.status == ScalingGroupStatus.ACTIVE and (not state.paused):
yield with_log(
trigger_convergence(tenant_id, group_id),
tenant_id=tenant_id, scaling_group_id=group_id)
def trigger_convergence_deletion(dispatcher, group, trans_id):
"""
Trigger deletion of group that belongs to convergence tenant
:param log: Bound logger
:param otter.models.interface.IScalingGroup scaling_group: the scaling
group object
"""
# Update group status and trigger convergence
# DELETING status will take precedence over other status
d = group.update_status(ScalingGroupStatus.DELETING)
eff = with_log(trigger_convergence(group.tenant_id, group.uuid),
tenant_id=group.tenant_id,
scaling_group_id=group.uuid,
transaction_id=trans_id)
d.addCallback(lambda _: perform(dispatcher, eff))
return d
def check_and_trigger(tenant_id, group_id):
"""
Trigger convergence on given group if it is ACTIVE and not paused
"""
try:
group, info = yield Effect(
GetScalingGroupInfo(tenant_id=tenant_id, group_id=group_id))
except NoSuchScalingGroupError:
# Nothing to do if group has been deleted
yield msg("selfheal-group-deleted",
tenant_id=tenant_id,
scaling_group_id=group_id)
else:
state = info["state"]
if (state.status == ScalingGroupStatus.ACTIVE
and not (state.paused or state.suspended)):
yield with_log(trigger_convergence(tenant_id, group_id),
tenant_id=tenant_id,
scaling_group_id=group_id)
def modify_and_trigger(dispatcher, group, logargs, modifier, *args, **kwargs):
"""
Modify group state and trigger convergence after that
:param IScalingGroup group: Scaling group whose state is getting modified
:param log: Bound logger
:param modifier: Callable as described in IScalingGroup.modify_state
:return: Deferred with None
"""
cannot_exec_pol_err = None
try:
yield group.modify_state(modifier, *args, **kwargs)
except CannotExecutePolicyError as ce:
cannot_exec_pol_err = ce
if tenant_is_enabled(group.tenant_id, config_value):
eff = Effect(BoundFields(trigger_convergence(group.tenant_id, group.uuid), logargs))
yield perform(dispatcher, eff)
if cannot_exec_pol_err is not None:
raise cannot_exec_pol_err
def modify_and_trigger(dispatcher, group, logargs, modifier, *args, **kwargs):
"""
Modify group state and trigger convergence after that
:param IScalingGroup group: Scaling group whose state is getting modified
:param log: Bound logger
:param modifier: Callable as described in IScalingGroup.modify_state
:return: Deferred with None
"""
cannot_exec_pol_err = None
try:
yield group.modify_state(modifier, *args, **kwargs)
except CannotExecutePolicyError as ce:
cannot_exec_pol_err = ce
if tenant_is_enabled(group.tenant_id, config_value):
eff = Effect(
BoundFields(trigger_convergence(group.tenant_id, group.uuid),
logargs))
yield perform(dispatcher, eff)
if cannot_exec_pol_err is not None:
raise cannot_exec_pol_err
def kick_off_convergence(new_state):
ceff = trigger_convergence(group.tenant_id, group.uuid)
return ceff.on(lambda _: new_state)
def kick_off_convergence(new_state):
ceff = trigger_convergence(group.tenant_id, group.uuid)
return ceff.on(lambda _: new_state)