Module controller 

The reconciler behind isb serve: one worker thread per service keeps its replicas created, current, running, healthy and in the load balancer.

A worker never holds a lock across incus calls, and a slow service (an image pull, a long rollout) never delays another’s health checks. Workers are told about a new deployment through their shared slot and woken early; a worker whose service went away deletes its own instances and exits, so nothing ever has to join a worker from inside another.

Structs

Controller

The daemon’s stack controller.

DeployChange

What a deploy is about to do, per service.

Event

Something that happened, for the event feed.

InstanceStatus

One replica, as stack_status reports it.

PortStatus

A published port: TCP served by the balancer, UDP by a NAT proxy on the replica (listen ends in /udp, backends is the replica).

RolloutStatus

A rollout in progress.

ServiceStatus

One service of a stack, as stack_status reports it.

SlotRollout

One slot’s handover: the instance going away and the one replacing it.

Snapshot

The latest host and instance sample.

StackStatus

A stack, as stack_status and stack_list report it.

Traits

Observer

Something that follows which replicas receive traffic: the ingress. Called from worker threads, never with a controller lock held.

Functions

now_ms

unsettled

Names of the services that are not converged, for a deploy waiting on its rollout.

Type Aliases

EventSink

Hears every event as it is emitted. It must not block (the history queues and returns).