def get_store_from_scheme(scheme):
"""
Given a scheme, return the appropriate store object
for handling that scheme.
"""
if scheme not in location.SCHEME_TO_CLS_MAP:
raise exceptions.UnknownScheme(scheme=scheme)
scheme_info = location.SCHEME_TO_CLS_MAP[scheme]
store = scheme_info['store']
if not store.is_capable(capabilities.BitMasks.DRIVER_REUSABLE):
# Driver instance isn't stateless so it can't
# be reused safely and need recreation.
store_entry = scheme_info['store_entry']
store = _load_store(store.conf, store_entry, invoke_load=True)
store.configure()
try:
scheme_map = {}
loc_cls = store.get_store_location_class()
for scheme in store.get_schemes():
scheme_map[scheme] = {
'store': store,
'location_class': loc_cls,
'store_entry': store_entry
}
location.register_scheme_map(scheme_map)
except NotImplementedError:
scheme_info['store'] = store
return store
def create_stores(conf=CONF):
"""
Registers all store modules and all schemes
from the given config. Duplicates are not re-registered.
"""
store_count = 0
for (store_entry, store_instance) in _load_stores(conf):
try:
schemes = store_instance.get_schemes()
store_instance.configure(re_raise_bsc=False)
except NotImplementedError:
continue
if not schemes:
raise exceptions.BackendException('Unable to register store %s. '
'No schemes associated with it.'
% store_entry)
else:
LOG.debug("Registering store %s with schemes %s",
store_entry, schemes)
scheme_map = {}
loc_cls = store_instance.get_store_location_class()
for scheme in schemes:
scheme_map[scheme] = {
'store': store_instance,
'location_class': loc_cls,
'store_entry': store_entry
}
location.register_scheme_map(scheme_map)
store_count += 1
return store_count
def create_stores(conf=CONF):
"""
Registers all store modules and all schemes
from the given config. Duplicates are not re-registered.
"""
store_count = 0
for (store_entry, store_instance) in _load_stores(conf):
try:
schemes = store_instance.get_schemes()
store_instance.configure(re_raise_bsc=False)
except NotImplementedError:
continue
if not schemes:
raise exceptions.BackendException('Unable to register store %s. '
'No schemes associated with it.'
% store_entry)
else:
LOG.debug("Registering store %s with schemes %s",
store_entry, schemes)
scheme_map = {}
loc_cls = store_instance.get_store_location_class()
for scheme in schemes:
scheme_map[scheme] = {
'store': store_instance,
'location_class': loc_cls,
'store_entry': store_entry
}
location.register_scheme_map(scheme_map)
store_count += 1
return store_count
def get_store_from_scheme(scheme):
"""
Given a scheme, return the appropriate store object
for handling that scheme.
"""
if scheme not in location.SCHEME_TO_CLS_MAP:
raise exceptions.UnknownScheme(scheme=scheme)
scheme_info = location.SCHEME_TO_CLS_MAP[scheme]
store = scheme_info['store']
if not store.is_capable(capabilities.BitMasks.DRIVER_REUSABLE):
# Driver instance isn't stateless so it can't
# be reused safely and need recreation.
store_entry = scheme_info['store_entry']
store = _load_store(store.conf, store_entry, invoke_load=True)
store.configure()
try:
scheme_map = {}
loc_cls = store.get_store_location_class()
for scheme in store.get_schemes():
scheme_map[scheme] = {
'store': store,
'location_class': loc_cls,
'store_entry': store_entry
}
location.register_scheme_map(scheme_map)
except NotImplementedError:
scheme_info['store'] = store
return store
def register_store_schemes(self, store):
schemes = store.get_schemes()
scheme_map = {}
for scheme in schemes:
loc_cls = store.get_store_location_class()
scheme_map[scheme] = {
'store': store,
'location_class': loc_cls,
}
location.register_scheme_map(scheme_map)
