def logged_in(self):
target_iqn = self.parent.parent.name
gateways = self.parent.parent.get_child('gateways')
local_gw = this_host()
is_local_target = len(
[child
for child in gateways.children if child.name == local_gw]) > 0
if is_local_target:
client_info = GWClient.get_client_info(target_iqn, self.client_iqn)
self.alias = client_info['alias']
self.ip_address = ','.join(client_info['ip_address'])
return client_info['state']
else:
self.alias = ''
self.ip_address = ''
return ''
def valid_client(**kwargs):
"""
validate a client create or update request, based on mode.
:param kwargs: 'mode' is the key field used to determine process flow
:return: 'ok' or an error description (str)
"""
valid_modes = ['create', 'delete', 'auth', 'disk']
parms_passed = set(kwargs.keys())
if 'mode' in kwargs:
if kwargs['mode'] not in valid_modes:
return ("Invalid client validation mode request - "
"asked for {}, available {}".format(
kwargs['mode'], valid_modes))
else:
return "Invalid call to valid_client - mode is needed"
# at this point we have a mode to work with
mode = kwargs['mode']
client_iqn = kwargs['client_iqn']
target_iqn = kwargs['target_iqn']
config = get_config()
if not config:
return "Unable to query the local API for the current config"
target_config = config['targets'][target_iqn]
if mode == 'create':
# iqn must be valid
try:
normalize_wwn(['iqn'], client_iqn)
except RTSLibError:
return ("Invalid IQN name for iSCSI")
# iqn must not already exist
if client_iqn in target_config['clients']:
return ("A client with the name '{}' is "
"already defined".format(client_iqn))
# Creates can only be done with a minimum number of gw's in place
num_gws = len([
gw_name for gw_name in config['gateways']
if isinstance(config['gateways'][gw_name], dict)
])
if num_gws < settings.config.minimum_gateways:
return ("Clients can not be defined until a HA configuration "
"has been defined "
"(>{} gateways)".format(settings.config.minimum_gateways))
# at this point pre-req's look good
return 'ok'
elif mode == 'delete':
# client must exist in the configuration
if client_iqn not in target_config['clients']:
return ("{} is not defined yet - nothing to "
"delete".format(client_iqn))
this_client = target_config['clients'].get(client_iqn)
if this_client.get('group_name', None):
return ("Unable to delete '{}' - it belongs to "
"group {}".format(client_iqn,
this_client.get('group_name')))
# client to delete must not be logged in - we're just checking locally,
# since *all* nodes are set up the same, and a client login request
# would normally login to each gateway
client_info = GWClient.get_client_info(target_iqn, client_iqn)
if client_info['state'] == 'LOGGED_IN':
return ("Client '{}' is logged in to {}- unable to delete until"
" it's logged out".format(client_iqn, target_iqn))
# at this point, the client looks ok for a DELETE operation
return 'ok'
elif mode == 'auth':
# client iqn must exist
if client_iqn not in target_config['clients']:
return ("Client '{}' does not exist".format(client_iqn))
username = kwargs['username']
password = kwargs['password']
mutual_username = kwargs['mutual_username']
mutual_password = kwargs['mutual_password']
error_msg = valid_credentials(username, password, mutual_username,
mutual_password)
if error_msg:
return error_msg
return 'ok'
elif mode == 'disk':
this_client = target_config['clients'].get(client_iqn)
if this_client.get('group_name', None):
return ("Unable to manage disks for '{}' - it belongs to "
"group {}".format(client_iqn,
this_client.get('group_name')))
if 'image_list' not in parms_passed:
return ("Disk changes require 'image_list' to be set, containing"
" a comma separated str of rbd images (pool/image)")
rqst_disks = set(kwargs['image_list'].split(','))
mapped_disks = set(target_config['clients'][client_iqn]['luns'].keys())
current_disks = set(config['disks'].keys())
if len(rqst_disks) > len(mapped_disks):
# this is an add operation
# ensure the image list is 'complete' not just a single disk
if not mapped_disks.issubset(rqst_disks):
return ("Invalid image list - it must contain existing "
"disks AND any additions")
# ensure new disk(s) exist - must yield a result since rqst>mapped
new_disks = rqst_disks.difference(mapped_disks)
if not new_disks.issubset(current_disks):
# disks provided are not currently defined
return ("Invalid image list - it defines new disks that do "
"not current exist")
return 'ok'
else:
# this is a disk removal operation
if kwargs['image_list']:
if not rqst_disks.issubset(mapped_disks):
return ("Invalid image list ({})".format(rqst_disks))
return 'ok'
return 'Unknown error in valid_client function'
def logged_in(self):
target_iqn = self.parent.parent.name
client_info = GWClient.get_client_info(target_iqn, self.client_iqn)
self.alias = client_info['alias']
self.ip_address = ','.join(client_info['ip_address'])
return client_info['state']
