def _run_phase(self, functors, component_order, instances, phase_name,
*inv_phase_names):
"""
Run a given 'functor' across all of the components, in order.
"""
component_results = {}
if not phase_name:
phase_recorder = phase.NullPhaseRecorder()
else:
phase_recorder = phase.PhaseRecorder(
self._get_phase_filename(phase_name))
neg_phase_recs = []
if inv_phase_names:
for n in inv_phase_names:
neg_phase_recs.append(
phase.PhaseRecorder(self._get_phase_filename(n)))
def change_activate(instance, on_off):
# Activate/deactivate them and there siblings (if any)
instance.activated = on_off
for (_name, sibling_instance) in instance.siblings.items():
sibling_instance.activated = on_off
# Reset all activations
for c in component_order:
change_activate(instances[c], False)
# Run all components which have not been ran previously (due to phase tracking)
for c in component_order:
instance = instances[c]
if c in phase_recorder:
LOG.debug(
"Skipping phase named %r for component %r since it already happened.",
phase_name, c)
change_activate(instance, True)
component_results[c] = None
else:
try:
result = None
with phase_recorder.mark(c):
if functors.start:
functors.start(instance)
if functors.run:
result = functors.run(instance)
if functors.end:
functors.end(instance, result)
for n in neg_phase_recs:
n.unmark(c)
component_results[instance] = result
change_activate(instance, True)
except excp.NoTraceException:
pass
return component_results
def _run_phase(self, functors, component_order, instances, phase_name, *inv_phase_names):
"""
Run a given 'functor' across all of the components, in order.
"""
# All the results for each component end up in here
# in the order in which they ran...
component_results = OrderedDict()
# This phase recorder will be used to check if a given component
# and action has ran in the past, if so that components action
# will not be ran again. It will also be used to mark that a given
# component has completed a phase (if that phase runs).
if not phase_name:
phase_recorder = phase.NullPhaseRecorder()
else:
phase_recorder = phase.PhaseRecorder(self._get_phase_filename(phase_name))
# These phase recorders will be used to undo other actions activities
# ie, when an install completes you want the uninstall phase to be
# removed from that actions phase file (and so on). This list will be
# used to accomplish that.
neg_phase_recs = []
if inv_phase_names:
for n in inv_phase_names:
if not n:
neg_phase_recs.append(phase.NullPhaseRecorder())
else:
neg_phase_recs.append(phase.PhaseRecorder(self._get_phase_filename(n)))
def change_activate(instance, on_off):
# Activate/deactivate a component instance and there siblings (if any)
#
# This is used when you say are looking at components
# that have been activated before your component has been.
#
# Typically this is useful for checking if a previous component
# has a shared dependency with your component and if so then there
# is no need to reinstall said dependency...
instance.activated = on_off
for (_name, sibling_instance) in instance.siblings.items():
sibling_instance.activated = on_off
def run_inverse_recorders(c_name):
for n in neg_phase_recs:
n.unmark(c_name)
# Reset all activations
for c in component_order:
change_activate(instances[c], False)
# Run all components which have not been ran previously (due to phase tracking)
for c in component_order:
result = None
instance = instances[c]
if c in phase_recorder:
LOG.debug("Skipping phase named %r for component %r since it already happened.", phase_name, c)
else:
try:
with phase_recorder.mark(c):
if functors.start:
functors.start(instance)
if functors.run:
result = functors.run(instance)
if functors.end:
functors.end(instance, result)
except excp.NoTraceException:
pass
change_activate(instance, True)
component_results[c] = result
run_inverse_recorders(c)
return component_results
def _run_many_phase(self, functors, group, instances, phase_name,
*inv_phase_names):
"""Run a given 'functor' across all of the components, passing *all* instances to run."""
# This phase recorder will be used to check if a given component
# and action has ran in the past, if so that components action
# will not be ran again. It will also be used to mark that a given
# component has completed a phase (if that phase runs).
if not phase_name:
phase_recorder = phase.NullPhaseRecorder()
else:
phase_recorder = phase.PhaseRecorder(
self._get_phase_filename(phase_name))
# These phase recorders will be used to undo other actions activities
# ie, when an install completes you want the uninstall phase to be
# removed from that actions phase file (and so on). This list will be
# used to accomplish that.
neg_phase_recs = []
if inv_phase_names:
for n in inv_phase_names:
if not n:
neg_phase_recs.append(phase.NullPhaseRecorder())
else:
neg_phase_recs.append(
phase.PhaseRecorder(self._get_phase_filename(n)))
def change_activate(instance, on_off):
# Activate/deactivate a component instance and there siblings (if any)
#
# This is used when you say are looking at components
# that have been activated before your component has been.
#
# Typically this is useful for checking if a previous component
# has a shared dependency with your component and if so then there
# is no need to reinstall said dependency...
instance.activated = on_off
for (_name, sibling_instance) in instance.siblings.items():
sibling_instance.activated = on_off
def run_inverse_recorders(c_name):
for n in neg_phase_recs:
n.unmark(c_name)
# Reset all activations
for c, instance in six.iteritems(instances):
change_activate(instance, False)
# Run all components which have not been ran previously (due to phase tracking)
instances_started = utils.OrderedDict()
for c, instance in six.iteritems(instances):
if c in SPECIAL_GROUPS:
c = "%s_%s" % (c, group)
if c in phase_recorder:
LOG.debug(
"Skipping phase named %r for component %r since it already happened.",
phase_name, c)
else:
try:
with phase_recorder.mark(c):
if functors.start:
functors.start(instance)
instances_started[c] = instance
except excp.NoTraceException:
pass
if functors.run:
results = functors.run(list(six.itervalues(instances_started)))
else:
results = [None] * len(instances_started)
instances_ran = instances_started
for i, (c, instance) in enumerate(six.iteritems(instances_ran)):
result = results[i]
try:
with phase_recorder.mark(c):
if functors.end:
functors.end(instance, result)
except excp.NoTraceException:
pass
for c, instance in six.iteritems(instances_ran):
change_activate(instance, True)
run_inverse_recorders(c)