util.hashring: Support associating arbitrary data with nodes

In this API, a 'node' is always a simple text string. Sometimes the caller may
have a more complex structure representing a node, but the hash ring is really
only concerned with the node's name.

This API change allows :add_nodes() to take a table of `node_name = value`
pairs, as well as the simple array of node names previously accepted.

The 'value' of the selected node is returned as a new second result from
:get_node().

If no value is passed when a node is added, it defaults to `true` (as before,
but this was never previously exposed).

0 files changed, 0 insertions, 0 deletions