Minor change for protogeni. Exclude physical resources that have a

node_attribute with key='protogeni_exclude'. Primitive, but since
there is a web interface and a backend script, its easy for remote
sites to use.

tbsetup/plab/plabnode.in

@@ -2,7 +2,7 @@
 # -*- python -*-
 #
 # EMULAB-COPYRIGHT
-# Copyright (c) 2000-2003 University of Utah and the Flux Group.
+# Copyright (c) 2000-2003, 2008 University of Utah and the Flux Group.
 # All rights reserved.
 #
 
@@ -83,6 +83,9 @@ def main(args):
         slice = plab.loadSliceByNode(pid, eid, nodeid)
         pass
 
+    print str(os.getuid())
+    print str(os.geteuid())
+
     if command == "alloc":
         try:
             node = slice.createNode(nodeid, force=parser.values.force)

tbsetup/ptopgen.in

@@ -373,6 +373,12 @@ if (defined($exempt_eid)) {
 	"(b.pid='$pid' and b.eid='$exempt_eid'))"; 
 }
 
+# In genimode exclude nodes with exclusion attribute.
+if ($genimode) {
+    $free_condition = "($free_condition and ".
+	"(nat.attrvalue is null or nat.attrvalue=0))";
+}
+
 # If the user wants all nodes, we consider everything to be free (this
 # overrides the other possible free conditions
 if ($allnodes) {
@@ -389,6 +395,9 @@ $result =
 		 "left join reserved as m on a.phys_nodeid=m.node_id ".
 		 "left join nodes as np on a.phys_nodeid=np.node_id ".
 		 "left join node_types as t on t.type=a.type ".
+		 "left join node_attributes as nat on ".
+		 "     nat.node_id=a.node_id and ".
+		 "     nat.attrkey='protogeni_exclude' ".
 		 "left outer join ". 
 		 "  (select type,attrvalue ".
 		 "   from node_type_attributes ".