def purge_snapshots_by_volume(volume, purge_limit):
"""
Purge snapshots per volume
@return: count of snapshots purged
"""
config = helpers.get_db_config()
ontap = OntapService(config['ontap_api'], config['ontap_apiuser'], config['ontap_apipass'],
config['ontap_svm_name'], config['ontap_aggr_name'], config['ontap_data_ip'])
ontap_snapshot_list = ontap.get_snapshot_list(volume)
if ontap_snapshot_list is None:
return 0
delete_count = len(ontap_snapshot_list) - purge_limit
if delete_count <= 0:
return 0
database = helpers.connect_db()
sorted_by_timestamp = sorted(ontap_snapshot_list, key=lambda snap: snap['timestamp'])
delete_snapshot_list = sorted_by_timestamp[:delete_count]
for snap in delete_snapshot_list:
status = ontap.delete_snapshot(volume, snap['snapshot_name'])
if helpers.verify_successful_response(status):
# delete snapshot document from db
doc = Database.get_document_by_name(database, snap['snapshot_name'])
if not doc: # if snapshot to be deleted is not found in DB
logging.info("Purge: snapshot document not found for %s", snap['snapshot_name'])
else:
database.delete(doc)
logging.info("Purge: snapshot deleted from DB and ONTAP: %s",
snap['snapshot_name'])
return delete_count
def purge_inconsistent_snapshots(volume):
"""
Snapshot consistency check - ONTAP vs DB
Purge inconsistent snapshot documents from DB
i.e. snapshots in DB that do not exist in ONTAP
@return: count of snapshots deleted from DB
"""
config = helpers.get_db_config()
database = helpers.connect_db()
snapshots_in_db = Database.get_snapshots_by_volume(database, volume=volume)
ontap = OntapService(config['ontap_api'], config['ontap_apiuser'],
config['ontap_apipass'], config['ontap_svm_name'],
config['ontap_aggr_name'], config['ontap_data_ip'])
ontap_snapshot_data = ontap.get_snapshot_list(volume)
if not ontap_snapshot_data:
# purge all snapshots from DB and return:
return purge_snapshots_from_db(snapshots_ontap=[],
snapshots_db=snapshots_in_db)
if not snapshots_in_db:
# return if there are no snapshot documents in db
return 0
ontap_snapshots = [snap['snapshot_name'] for snap in ontap_snapshot_data]
return purge_snapshots_from_db(snapshots_ontap=ontap_snapshots,
snapshots_db=snapshots_in_db)
def snapshot_list(volume_name):
"""
List all snapshots
---
tags:
- snapshot
parameters:
- in: path
name: volume_name
required: true
description: parent volume name to list snapshots
type: string
responses:
200:
description: snapshot was created successfully
"""
database = helpers.connect_db()
config_document = helpers.get_db_config()
if not config_document:
raise GenericException(
500,
"Customer config doc not found, please contact your administrator",
"Database Exception")
ontap = OntapService(config_document['ontap_api'],
config_document['ontap_apiuser'],
config_document['ontap_apipass'],
config_document['ontap_svm_name'],
config_document['ontap_aggr_name'],
config_document['ontap_data_ip'])
snapshots = ontap.get_snapshot_list(volume_name)
return jsonify(snapshots)
