Synnefo » snf-ganeti

  @locking.ssynchronized(_config_lock, shared=1)

  def GetNodeGroupInstances(self, uuid, primary_only=False):

    """Get the instances of a node group.

    @param uuid: Node group UUID

    @param primary_only: Whether to only consider primary nodes

    @rtype: frozenset

    @return: List of instance names in node group

    """

    if primary_only:

      nodes_fn = lambda inst: [inst.primary_node]

    else:

      nodes_fn = lambda inst: inst.all_nodes

    return frozenset(inst.name

                     for inst in self._config_data.instances.values()

                     for node_name in nodes_fn(inst)

                     if self._UnlockedGetNodeInfo(node_name).group == uuid)