Malachi.
View Source
Periodically reconciles this node into the lease cluster (R3-b-iii hardening). On start and every
:interval ms it calls the injected :reconcile seam, wired to LeaseServer.reconcile/2 - which
bootstraps the lease cluster if unformed and starts the local server so a node that was down when the
cluster first formed rejoins. Level-triggered and idempotent (a joined node's reconcile is a no-op), so
it just keeps ticking. Keeps the LeaseHolder free of ra/membership concerns. Every replicated store
(lease, ring, users, lockouts, ACLs) runs one of these.
With :version_check it also asks Malachi.Cluster.MachineVersion.check/3 on each tick whether the
local member stopped applying its log because the group moved to a machine version this node does not
support. The last answer is this process's own state, so a member that stays stuck is logged once,
when it gets stuck, and again only when it recovers.
Seams:
:reconcile-(-> any), one reconcile pass;:version_check- optional{machine, server_id}, the local member to watch;:interval- reconcile period in ms (default 30_000);:name- optional registered name.
Summary
Functions
Returns a specification to start this module under a supervisor.
Runs one reconcile pass synchronously (a manual trigger, e.g. for tests).
The last machine version status seen for the watched member (:ok when nothing is watched).
Functions
Returns a specification to start this module under a supervisor.
See Supervisor.
@spec reconcile_now(GenServer.server()) :: :ok
Runs one reconcile pass synchronously (a manual trigger, e.g. for tests).
@spec start_link(keyword()) :: GenServer.on_start()
@spec version_status(GenServer.server()) :: Malachi.Cluster.MachineVersion.status()
The last machine version status seen for the watched member (:ok when nothing is watched).