def delete_events(_, snapshot: dict):
"""
Deletes the events that were created with the snapshot.
"""
if snapshot.get('@type') == 'devices:Snapshot':
for event_id in snapshot['events']:
try:
# If the first event is Register, erasing the device will erase the rest of events
event = DeviceEventDomain.get_one(event_id)
except EventNotFound:
pass
else:
try:
execute_delete(Naming.resource(event['@type']), event['_id'])
except InnerRequestError as e:
if e.status_code != 404:
raise e
def delete_events(_, snapshot: dict):
"""
Deletes the events that were created with the snapshot.
"""
if snapshot.get('@type') == 'devices:Snapshot':
for event_id in snapshot['events']:
try:
# If the first event is Register, erasing the device will erase the rest of events
event = DeviceEventDomain.get_one(event_id)
except EventNotFound:
pass
else:
try:
execute_delete(Naming.resource(event['@type']),
event['_id'])
except InnerRequestError as e:
if e.status_code != 404:
raise e
def check_migrate(_, resource: dict):
"""
Raises an exception if any of the device(s) in the resource is in another database, as a result of a Migrate event.
This is done to avoid adding/modifying/deleting events or places that have a relationship with a device that
is not legally bound in a DeviceHub.
The method checks if the last Migrate has a 'to' field, meaning the device is in another database and has not
come back.
:raises DeviceHasMigrated
"""
devices = ([resource['device']] if 'device' in resource else []) + resource.get('devices', [])
for device_id in devices:
with suppress(EventNotFound):
# todo can it be done with only one access to the DB for all devices (optimization)?
# Note that this is executed for every post / delete /update / patch, resulting in queries = n of devices
query = {'@type': Migrate.type_name, 'devices': {'$in': [device_id]}}
last_migrate = DeviceEventDomain.get_one({'$query': query, '$orderby': {'_created': pymongo.DESCENDING}})
if 'to' in last_migrate:
raise DeviceHasMigrated(device_id, last_migrate)
def check_migrate(_, resource: dict):
"""
Raises an exception if any of the device(s) in the resource is in another database, as a result of a Migrate event.
This is done to avoid adding/modifying/deleting events or places that have a relationship with a device that
is not legally bound in a DeviceHub.
The method checks if the last Migrate has a 'to' field, meaning the device is in another database and has not
come back.
:raises DeviceHasMigrated
"""
devices = ([resource['device']] if 'device' in resource else []) + resource.get('devices', [])
for device_id in devices:
with suppress(EventNotFound):
# todo can it be done with only one access to the DB for all devices (optimization)?
# Note that this is executed for every post / delete /update / patch, resulting in queries = n of devices
query = {'@type': Migrate.type_name, 'devices': {'$in': [device_id]}}
last_migrate = DeviceEventDomain.get_one({'$query': query, '$orderby': {'_created': pymongo.DESCENDING}})
if 'to' in last_migrate:
raise DeviceHasMigrated(device_id, last_migrate)
