from sfa.util.faults import *
from sfa.util.method import Method
from sfa.util.parameter import Parameter, Mixed
-from sfa.util.auth import Auth
+from sfa.trust.auth import Auth
from sfa.util.record import GeniRecord
-
from sfa.server.registry import Registries
+from sfa.util.prefixTree import prefixTree
+from sfa.trust.credential import Credential
class list(Method):
"""
@param hrn human readable name of authority to list
@return list of record dictionaries
"""
-
interfaces = ['registry']
accepts = [
returns = [GeniRecord]
- def call(self, cred, hrn):
-
+ def call(self, cred, hrn, caller_cred=None):
+
self.api.auth.check(cred, 'list')
+ if caller_cred==None:
+ caller_cred=cred
+
+ #log the call
+ self.api.logger.info("interface: %s\tcaller-hrn: %s\ttarget-hrn: %s\tmethod-name: %s"%(self.api.interface, Credential(string=caller_cred).get_gid_caller().get_hrn(), hrn, self.name))
records = []
- try:
- if not self.api.auth.hierarchy.auth_exists(hrn):
- raise MissingAuthority(hrn)
- table = self.api.auth.get_auth_table(hrn)
- records = table.list()
- except MissingAuthority:
- # is this a foreign authority
- registries = Registries(self.api)
- credential = self.api.getCredential()
- for registry in registries:
- if hrn.startswith(registry) and registry not in [self.api.hrn]:
- record_list = registries[registry].list(credential, hrn)
- for record in record_list:
- records.append(record.as_dict())
+
+ # load all know registry names into a prefix tree and attempt to find
+ # the longest matching prefix
+ registries = Registries(self.api)
+ hrns = registries.keys()
+ tree = prefixTree()
+ tree.load(hrns)
+ registry_hrn = tree.best_match(hrn)
+
+ #if there was no match then this record belongs to an unknow registry
+ if not registry_hrn:
+ raise MissingAuthority(hrn)
+
+ # if the best match (longest matching hrn) is not the local registry,
+ # forward the request
+ if registry_hrn != self.api.hrn:
+ credential = self.api.getCredential()
+ try:
+ record_list = registries[registry_hrn].list(credential, hrn, caller_cred=caller_cred)
+ records = [record.as_dict() for record in record_list]
+ if records:
return records
+ except:
+ pass
+
+ # if we still havnt found the record yet, try the local registry
+ if not self.api.auth.hierarchy.auth_exists(hrn):
+ raise MissingAuthority(hrn)
+ table = self.api.auth.get_auth_table(hrn)
+ records = table.list()
+
return records