def find_service_references(self,
clazz=None,
ldap_filter=None,
only_one=False):
"""
Finds all services references matching the given filter.
:param clazz: Class implemented by the service
:param ldap_filter: Service filter
:param only_one: Return the first matching service reference only
:return: A list of found references, or None
:raise BundleException: An error occurred looking for service
references
"""
with self.__svc_lock:
if clazz is None and ldap_filter is None:
# Return a sorted copy of the keys list
# Do not return None, as the whole content was required
return sorted(self.__svc_registry.keys())
if hasattr(clazz, '__name__'):
# Escape the type name
clazz = ldapfilter.escape_LDAP(clazz.__name__)
elif is_string(clazz):
# Escape the class name
clazz = ldapfilter.escape_LDAP(clazz)
if clazz is None:
# Directly use the given filter
refs_set = sorted(self.__svc_registry.keys())
else:
try:
# Only for references with the given specification
refs_set = iter(self.__svc_specs[clazz])
except KeyError:
# No matching specification
return None
# Parse the filter
try:
new_filter = ldapfilter.get_ldap_filter(ldap_filter)
except ValueError as ex:
raise BundleException(ex)
if new_filter is not None:
# Prepare a generator, as we might not need a complete
# walk-through
refs_set = (ref for ref in refs_set
if new_filter.matches(ref.get_properties()))
if only_one:
# Return the first element in the list/generator
try:
return next(refs_set)
except StopIteration:
# No match
return None
# Get all the matching references
return list(refs_set) or None
def find_service_references(self, clazz=None, ldap_filter=None,
only_one=False):
"""
Finds all services references matching the given filter.
:param clazz: Class implemented by the service
:param ldap_filter: Service filter
:param only_one: Return the first matching service reference only
:return: A list of found references, or None
:raise BundleException: An error occurred looking for service
references
"""
with self.__svc_lock:
if clazz is None and ldap_filter is None:
# Return a sorted copy of the keys list
# Do not return None, as the whole content was required
return sorted(self.__svc_registry.keys())
if hasattr(clazz, '__name__'):
# Escape the type name
clazz = ldapfilter.escape_LDAP(clazz.__name__)
elif is_string(clazz):
# Escape the class name
clazz = ldapfilter.escape_LDAP(clazz)
if clazz is None:
# Directly use the given filter
refs_set = sorted(self.__svc_registry.keys())
else:
try:
# Only for references with the given specification
refs_set = iter(self.__svc_specs[clazz])
except KeyError:
# No matching specification
return None
# Parse the filter
try:
new_filter = ldapfilter.get_ldap_filter(ldap_filter)
except ValueError as ex:
raise BundleException(ex)
if new_filter is not None:
# Prepare a generator, as we might not need a complete
# walk-through
refs_set = (ref for ref in refs_set
if new_filter.matches(ref.get_properties()))
if only_one:
# Return the first element in the list/generator
try:
return next(refs_set)
except StopIteration:
# No match
return None
# Get all the matching references
return list(refs_set) or None