Module cartridge.topology
Topology validation and filtering.
Get full list of replicaset leaders.
Full list is composed of:
- New order array
- Initial order from topology_cfg (with no repetitions)
- All other servers in the replicaset, sorted by uuid, ascending
Neither topology_cfg
nor new_order
tables are modified.
New order validity is ignored too.
Parameters:
Returns:
({string,…}) array of leaders uuids
Validate topology configuration.
Parameters:
Returns:
(boolean) true
Or
(nil)
(table) Error description
Find the server in topology config.
(Added in v1.2.0-17)
Parameters:
Returns:
(nil or string) instance_uuid
found
Merge servers URIs form topology_cfg with fresh membership status.
This function sustains cartridge operability in case of advertise_uri change. The uri map is composed basing on topology_cfg, but if some of them turns out to be dead, the member with corresponding payload.uuid is searched beyond.
(Added in v2.3.0-7)
Parameters:
- topology_cfg: (table)
Returns:
({[uuid]) = uri} with all servers except expelled ones.