commit 062403dbf1e8ff3f7cbc20501ba4f7de812c0b17
author Brad Bishop <bradleyb@fuzziesquirrel.com> Sat Jul 29 22:43:40 2017 -0400
committer Brad Bishop <bradleyb@fuzziesquirrel.com> Sat Jul 29 22:45:29 2017 -0400
tree 9c14357bb1612d4061acf7e77773b69bcce82fe2
parent 99b8bc81a1330a6cadabfab7738b31263d9165d5

server: Handle short lived bus name owners

A short lived process may claim a name and then exit before
the mapper calls GetNameOwner on it.  Add code to tolerate
this.

Change-Id: I2cf81713da4c83605c636d09087a18c651187aec
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>

obmc/mapper/server.py

diff --git a/obmc/mapper/server.py b/obmc/mapper/server.py
index 2944ddf..cf05866 100644
--- a/obmc/mapper/server.py
+++ b/obmc/mapper/server.py
@@ -487,12 +487,17 @@
         return match
 
     def discover(self, owners=[]):
+        def get_owner(name):
+            try:
+                return (name, self.bus.get_name_owner(name))
+            except:
+                traceback.print_exception(*sys.exc_info())
+
         if not owners:
             owned_names = filter(
                 lambda x: not obmc.dbuslib.bindings.is_unique(x),
                 self.bus.list_names())
-            owners = [self.bus.get_name_owner(x) for x in owned_names]
-            owners = zip(owned_names, owners)
+            owners = filter(bool, [get_owner(name) for name in owned_names])
         for owned_name, o in owners:
             self.bus_map[o] = owned_name
             self.defer_signals[o] = []