introducer: add get_nickname_for_peerid

src/allmydata/client.py

@@ -256,6 +256,8 @@ class Client(node.Node, testutil.PollMixin):
 
     def get_all_peerids(self):
         return self.introducer_client.get_all_peerids()
+    def get_nickname_for_peerid(self, peerid):
+        return self.introducer_client.get_nickname_for_peerid(peerid)
 
     def get_permuted_peers(self, service_name, key):
         """

src/allmydata/introducer/client.py

@@ -244,6 +244,14 @@ class IntroducerClient(service.Service, Referenceable):
                           for (peerid, service_name, rref)
                           in self._connections])
 
+    def get_nickname_for_peerid(self, peerid):
+        for k in self._connectors:
+            (peerid0, svcname0) = k
+            if peerid0 == peerid:
+                rsc = self._connectors[k]
+                return rsc.nickname
+        return None
+
     def get_all_connections_for(self, service_name):
         return frozenset([c
                           for c in self._connections

src/allmydata/introducer/old.py

@@ -247,6 +247,14 @@ class IntroducerClient_V1(service.Service, Referenceable):
                           for (peerid, service_name, rref)
                           in self._connections])
 
+    def get_nickname_for_peerid(self, peerid):
+        for k in self._connectors:
+            (peerid0, svcname0) = k
+            if peerid0 == peerid:
+                rsc = self._connectors[k]
+                return rsc.nickname
+        return None
+
     def get_all_connections_for(self, service_name):
         return frozenset([c
                           for c in self._connections

src/allmydata/test/test_introducer.py

@@ -152,6 +152,9 @@ class SystemTest(SystemTestMixin, unittest.TestCase):
                 self.failUnlessEqual(len(c.get_all_peerids()), NUMCLIENTS)
                 self.failUnlessEqual(len(c.get_all_connections_for("storage")),
                                      NUMCLIENTS)
+                nodeid0 = b32decode(tubs[clients[0]].tubID.upper())
+                self.failUnlessEqual(c.get_nickname_for_peerid(nodeid0),
+                                     "nickname-0")
         d.addCallback(_check1)
 
         origin_c = clients[0]