Module locality 

Failure-domain locality for correlated fault injection.

Locality models a FoundationDB-style Cluster → Datacenter → Zone → Machine → Process hierarchy so that collocated processes share fate. It is orthogonal to tags (super::tags): tags round-robin independent dimensions, while locality assigns contiguous hierarchical groups whose processes can be rebooted together (see AttritionScope).

Example

// 3 datacenters × 3 zones × 3 machines × 1 process = 27 processes.
.cluster(LocalityConfig::new(3, 3, 3, 1), || Box::new(MyNode::new()))

Structs

LocalityConfig

Configuration for laying processes out across a failure-domain topology.

LocalityInfo

Resolved failure-domain locality for a single process instance.

MachineRegistry

Registry mapping process IPs to their resolved locality.

Enums

DomainLevel

The level of a failure domain in the locality hierarchy.