Add printing of uid_pool to gnt-cluster info

Signed-off-by: Balazs Lecz <leczb@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

lib/uidpool.py

@@ -31,6 +31,7 @@ from the pool.
 
 from ganeti import errors
 from ganeti import constants
+from ganeti import utils
 
 
 def ParseUidPool(value, separator=None):
@@ -108,6 +109,28 @@ def RemoveFromUidPool(uid_pool, remove_uids):
     uid_pool.remove(uid_range)
 
 
+def _FormatUidRange(lower, higher):
+  """Convert a user-id range definition into a string.
+
+  """
+  if lower == higher:
+    return str(lower)
+  return "%s-%s" % (lower, higher)
+
+
+def FormatUidPool(uid_pool):
+  """Convert the internal representation of the user-id pool into a string.
+
+  The output format is also accepted by ParseUidPool()
+
+  @param uid_pool: a list of integer pairs representing UID ranges
+  @return: a string with the formatted results
+
+  """
+  return utils.CommaJoin([_FormatUidRange(lower, higher)
+                          for lower, higher in uid_pool])
+
+
 def CheckUidPool(uid_pool):
   """Sanity check user-id pool range definition values.
 

scripts/gnt-cluster

@@ -276,6 +276,7 @@ def ShowClusterConfig(opts, args):
   ToStdout("  - file storage path: %s", result["file_storage_dir"])
   ToStdout("  - maintenance of node health: %s",
            result["maintain_node_health"])
+  ToStdout("  - uid pool: %s", uidpool.FormatUidPool(result["uid_pool"]))
 
   ToStdout("Default instance parameters:")
   _PrintGroupedParams(result["beparams"])