def update_statuses(self, callback, *args, **kwargs):
"""Update leases and reservations table after executing a callback."""
try:
# The callback() has to return a dictionary of
# {reservation id: flags to update}.
# e.g. {'dummyid': {'missing_resources': True}}
reservation_flags = callback(*args, **kwargs)
except Exception as e:
LOG.exception(
'Caught an exception while executing a callback. '
'%s', str(e))
# TODO(hiro-kobayashi): update statuses of related leases and
# reservations. Depends on the state-machine blueprint.
# Update flags of related leases and reservations.
lease_ids = set([])
for reservation_id, flags in reservation_flags.items():
db_api.reservation_update(reservation_id, flags)
LOG.debug('Reservation %s was updated: %s', reservation_id, flags)
reservation = db_api.reservation_get(reservation_id)
lease_ids.add(reservation['lease_id'])
for lease_id in lease_ids:
LOG.debug('Lease %s was updated: {"degraded": True}', lease_id)
db_api.lease_update(lease_id, {'degraded': True})
def _update_flags(self, reservation_flags):
"""Update lease/reservation flags."""
lease_ids = set([])
for reservation_id, flags in reservation_flags.items():
db_api.reservation_update(reservation_id, flags)
LOG.debug('Reservation %s was updated: %s', reservation_id, flags)
reservation = db_api.reservation_get(reservation_id)
lease_ids.add(reservation['lease_id'])
for lease_id in lease_ids:
LOG.debug('Lease %s was updated: {"degraded": True}', lease_id)
db_api.lease_update(lease_id, {'degraded': True})
def wrapper(*args, **kwargs):
# Update a lease status
lease_id = kwargs['lease_id']
l = db_api.lease_get(lease_id)
if cls.is_valid_transition(l['status'],
transition,
lease_id=lease_id):
db_api.lease_update(lease_id,
{'status': transition})
LOG.debug('Status of lease %s changed from %s to %s.',
lease_id, l['status'], transition)
else:
LOG.warn('Aborting %s. '
'Invalid lease status transition from %s to %s.',
func.__name__, l['status'],
transition)
raise exceptions.InvalidStatus
# Executing the wrapped function
try:
result = func(*args, **kwargs)
except Exception as e:
LOG.error('Lease %s went into ERROR status. %s',
lease_id, str(e))
db_api.lease_update(lease_id,
{'status': cls.ERROR})
raise e
# Update a lease status if it exists
if db_api.lease_get(lease_id):
next_status = cls.derive_stable_status(lease_id)
if (next_status in result_in
and cls.is_valid_transition(transition,
next_status,
lease_id=lease_id)):
db_api.lease_update(lease_id,
{'status': next_status})
LOG.debug('Status of lease %s changed from %s to %s.',
lease_id, transition, next_status)
else:
LOG.error('Lease %s went into ERROR status.',
lease_id)
db_api.lease_update(lease_id, {'status': cls.ERROR})
raise exceptions.InvalidStatus
return result
def update_lease(self, lease_id, values):
if not values:
return db_api.lease_get(lease_id)
if len(values) == 1 and 'name' in values:
db_api.lease_update(lease_id, values)
return db_api.lease_get(lease_id)
lease = db_api.lease_get(lease_id)
start_date = values.get(
'start_date',
datetime.datetime.strftime(lease['start_date'], LEASE_DATE_FORMAT))
end_date = values.get(
'end_date',
datetime.datetime.strftime(lease['end_date'], LEASE_DATE_FORMAT))
before_end_date = values.get('before_end_date', None)
start_date, end_date, now = self._parse_lease_dates(start_date,
end_date)
values['start_date'] = start_date
values['end_date'] = end_date
self._check_for_invalid_date_inputs(lease, values, now)
with trusts.create_ctx_from_trust(lease['trust_id']):
if before_end_date:
try:
before_end_date = self._date_from_string(before_end_date)
self._check_date_within_lease_limits(before_end_date,
values)
except common_ex.BlazarException as e:
LOG.error("Invalid before_end_date param. %s", str(e))
raise e
reservations = values.get('reservations', [])
existing_reservations = (
db_api.reservation_get_all_by_lease_id(lease_id))
try:
invalid_ids = set([r['id'] for r in reservations]).difference(
[r['id'] for r in existing_reservations])
except KeyError:
raise exceptions.MissingParameter(param='reservation ID')
if invalid_ids:
raise common_ex.InvalidInput(
'Please enter valid reservation IDs. Invalid reservation '
'IDs are: %s' % ','.join([str(id) for id in invalid_ids]))
try:
[
self.plugins[r['resource_type']] for r
in (reservations + existing_reservations)]
except KeyError:
raise exceptions.CantUpdateParameter(param='resource_type')
existing_allocs = self._existing_allocations(existing_reservations)
if reservations:
new_reservations = reservations
new_allocs = self._allocation_candidates(values,
existing_reservations)
else:
# User is not updating reservation parameters, e.g., is only
# adjusting lease start/end dates.
new_reservations = existing_reservations
new_allocs = existing_allocs
try:
self.enforcement.check_update(context.current(), lease, values,
existing_allocs, new_allocs,
existing_reservations,
new_reservations)
except common_ex.NotAuthorized as e:
LOG.error("Enforcement checks failed. %s", str(e))
raise common_ex.NotAuthorized(e)
# TODO(frossigneux) rollback if an exception is raised
for reservation in existing_reservations:
v = {}
v['start_date'] = values['start_date']
v['end_date'] = values['end_date']
try:
v.update([r for r in reservations
if r['id'] == reservation['id']].pop())
except IndexError:
pass
resource_type = v.get('resource_type',
reservation['resource_type'])
if resource_type != reservation['resource_type']:
raise exceptions.CantUpdateParameter(
param='resource_type')
self.plugins[resource_type].update_reservation(
reservation['id'], v)
event = db_api.event_get_first_sorted_by_filters(
'lease_id',
'asc',
{
'lease_id': lease_id,
'event_type': 'start_lease'
}
)
if not event:
raise common_ex.BlazarException(
'Start lease event not found')
db_api.event_update(event['id'], {'time': values['start_date']})
event = db_api.event_get_first_sorted_by_filters(
'lease_id',
'asc',
{
'lease_id': lease_id,
'event_type': 'end_lease'
}
)
if not event:
raise common_ex.BlazarException(
'End lease event not found')
db_api.event_update(event['id'], {'time': values['end_date']})
notifications = ['update']
self._update_before_end_event(lease, values, notifications,
before_end_date)
try:
del values['reservations']
except KeyError:
pass
db_api.lease_update(lease_id, values)
lease = db_api.lease_get(lease_id)
with trusts.create_ctx_from_trust(lease['trust_id']) as ctx:
self._send_notification(lease, ctx, events=notifications)
return lease
def create_lease(self, lease_values):
"""Create a lease with reservations.
Return either the model of created lease or None if any error.
"""
lease_values['status'] = status.lease.CREATING
try:
trust_id = lease_values.pop('trust_id')
except KeyError:
raise exceptions.MissingTrustId()
self.validate_params(lease_values, ['name', 'start_date', 'end_date'])
# Remove and keep event and reservation values
events = lease_values.pop("events", [])
reservations = lease_values.pop("reservations", [])
for res in reservations:
self.validate_params(res, ['resource_type'])
# Create the lease without the reservations
start_date, end_date, now = self._parse_lease_dates(
lease_values['start_date'], lease_values['end_date'])
if start_date < now:
raise common_ex.InvalidInput(
'Start date must be later than current date')
if end_date <= start_date:
raise common_ex.InvalidInput(
'End date must be later than start date.')
with trusts.create_ctx_from_trust(trust_id) as ctx:
# NOTE(priteau): We should not get user_id from ctx, because we are
# in the context of the trustee (blazar user).
# lease_values['user_id'] is set in blazar/api/v1/service.py
lease_values['project_id'] = ctx.project_id
lease_values['start_date'] = start_date
lease_values['end_date'] = end_date
allocations = self._allocation_candidates(
lease_values, reservations)
try:
self.enforcement.check_create(
context.current(), lease_values, reservations, allocations)
except common_ex.NotAuthorized as e:
LOG.error("Enforcement checks failed. %s", str(e))
raise common_ex.NotAuthorized(e)
events.append({'event_type': 'start_lease',
'time': start_date,
'status': status.event.UNDONE})
events.append({'event_type': 'end_lease',
'time': end_date,
'status': status.event.UNDONE})
before_end_date = lease_values.get('before_end_date', None)
if before_end_date:
# incoming param. Validation check
try:
before_end_date = self._date_from_string(
before_end_date)
self._check_date_within_lease_limits(before_end_date,
lease_values)
except common_ex.BlazarException as e:
LOG.error("Invalid before_end_date param. %s", str(e))
raise e
elif CONF.manager.minutes_before_end_lease > 0:
delta = datetime.timedelta(
minutes=CONF.manager.minutes_before_end_lease)
before_end_date = lease_values['end_date'] - delta
if before_end_date:
event = {'event_type': 'before_end_lease',
'status': status.event.UNDONE}
events.append(event)
self._update_before_end_event_date(event, before_end_date,
lease_values)
try:
if trust_id:
lease_values.update({'trust_id': trust_id})
lease = db_api.lease_create(lease_values)
lease_id = lease['id']
except db_ex.BlazarDBDuplicateEntry:
LOG.exception('Cannot create a lease - duplicated lease name')
raise exceptions.LeaseNameAlreadyExists(
name=lease_values['name'])
except db_ex.BlazarDBException:
LOG.exception('Cannot create a lease')
raise
else:
try:
for reservation in reservations:
reservation['lease_id'] = lease['id']
reservation['start_date'] = lease['start_date']
reservation['end_date'] = lease['end_date']
self._create_reservation(reservation)
except Exception:
LOG.exception("Failed to create reservation for a lease. "
"Rollback the lease and associated "
"reservations")
db_api.lease_destroy(lease_id)
raise
try:
for event in events:
event['lease_id'] = lease['id']
db_api.event_create(event)
except (exceptions.UnsupportedResourceType,
common_ex.BlazarException):
LOG.exception("Failed to create event for a lease. "
"Rollback the lease and associated "
"reservations")
db_api.lease_destroy(lease_id)
raise
else:
db_api.lease_update(
lease_id,
{'status': status.lease.PENDING})
lease = db_api.lease_get(lease_id)
self._send_notification(lease, ctx, events=['create'])
return lease
def update_lease(self, lease_id, values):
if not values:
return db_api.lease_get(lease_id)
if len(values) == 1 and 'name' in values:
db_api.lease_update(lease_id, values)
return db_api.lease_get(lease_id)
lease = db_api.lease_get(lease_id)
start_date = values.get(
'start_date',
datetime.datetime.strftime(lease['start_date'], LEASE_DATE_FORMAT))
end_date = values.get(
'end_date',
datetime.datetime.strftime(lease['end_date'], LEASE_DATE_FORMAT))
before_end_date = values.get('before_end_date', None)
now = datetime.datetime.utcnow()
now = datetime.datetime(now.year,
now.month,
now.day,
now.hour,
now.minute)
if start_date == 'now':
start_date = now
else:
start_date = self._date_from_string(start_date)
if end_date == 'now':
end_date = now
else:
end_date = self._date_from_string(end_date)
values['start_date'] = start_date
values['end_date'] = end_date
if (lease['start_date'] < now and
values['start_date'] != lease['start_date']):
raise common_ex.NotAuthorized(
'Cannot modify the start date of already started leases')
if (lease['start_date'] > now and
values['start_date'] < now):
raise common_ex.NotAuthorized(
'Start date must be later than current date')
if lease['end_date'] < now:
raise common_ex.NotAuthorized(
'Terminated leases can only be renamed')
if (values['end_date'] < now or
values['end_date'] < values['start_date']):
raise common_ex.NotAuthorized(
'End date must be later than current and start date')
with trusts.create_ctx_from_trust(lease['trust_id']):
if before_end_date:
try:
before_end_date = self._date_from_string(before_end_date)
self._check_date_within_lease_limits(before_end_date,
values)
except common_ex.BlazarException as e:
LOG.error("Invalid before_end_date param. %s", str(e))
raise e
# TODO(frossigneux) rollback if an exception is raised
reservations = values.get('reservations', [])
for reservation in (
db_api.reservation_get_all_by_lease_id(lease_id)):
v = {}
v['start_date'] = values['start_date']
v['end_date'] = values['end_date']
try:
v.update([r for r in reservations
if r['id'] == reservation['id']].pop())
except KeyError:
raise exceptions.MissingParameter(param='reservation ID')
except IndexError:
pass
resource_type = v.get('resource_type',
reservation['resource_type'])
if resource_type != reservation['resource_type']:
raise exceptions.CantUpdateParameter(
param='resource_type')
self.plugins[resource_type].update_reservation(
reservation['id'], v)
event = db_api.event_get_first_sorted_by_filters(
'lease_id',
'asc',
{
'lease_id': lease_id,
'event_type': 'start_lease'
}
)
if not event:
raise common_ex.BlazarException(
'Start lease event not found')
db_api.event_update(event['id'], {'time': values['start_date']})
event = db_api.event_get_first_sorted_by_filters(
'lease_id',
'asc',
{
'lease_id': lease_id,
'event_type': 'end_lease'
}
)
if not event:
raise common_ex.BlazarException(
'End lease event not found')
db_api.event_update(event['id'], {'time': values['end_date']})
notifications = ['update']
self._update_before_end_event(lease, values, notifications,
before_end_date)
try:
del values['reservations']
except KeyError:
pass
db_api.lease_update(lease_id, values)
lease = db_api.lease_get(lease_id)
with trusts.create_ctx_from_trust(lease['trust_id']) as ctx:
self._send_notification(lease, ctx, events=notifications)
return lease
def downgrade():
leases = db_api.lease_get_all()
for lease in leases:
db_api.lease_update(lease['id'], {'status': None})
def upgrade():
leases = db_api.lease_get_all()
for lease in leases:
db_api.lease_update(lease['id'],
{'status': ls.derive_stable_status(lease['id'])})