Dispatchers

Dispatchers propagate incremental policy updates to multiple enforcer instances (e.g. a cluster). They use a consistency protocol (e.g. Raft) so all enforcers eventually see the same policy. Casbin’s normal API (AddPolicy, RemovePolicy, etc.) is unchanged; the dispatcher sends updates to other nodes.

Two parts: (1) hooks inside Casbin that the dispatcher implements, and (2) dispatcher-specific setup (e.g. cluster membership, config).

примітка

Dispatchers only sync changes after init. They do not fix existing divergence. Start all enforcers with the same policy (e.g. from the same DB or snapshot) before enabling a dispatcher.

Available dispatchers:

Adapter	Type	Author	Description
Hashicorp Raft Dispatcher	Raft	Casbin	A dispatcher based on Hashicorp Raft
KDKYG/casbin-dispatcher	Raft	@KDKYG	A dispatcher based on Hashicorp Raft

DistributedEnforcer

DistributedEnforcer wraps SyncedEnforcer to work with dispatchers.

    e, _ := casbin.NewDistributedEnforcer("examples/basic_model.conf", "examples/basic_policy.csv")