Module breaker 

The circuit breaker the study-registry phases share within one worker process.

BREAKERS is a process-local static: credit-registrar and suotar-syncer are separate OS processes (see programs/credit_registrar.rs and programs/suotar_syncer.rs), each with its own map, so an outage tripping the breaker in one does not pause the study-registry phases of the other. Only the phases within the same process actually share a breaker per scope key.

Keyed by scope rather than global: a test driving a deliberate outage for its own course must not silence the pipeline for every other test running at the same moment. Production only ever uses the global key.

Structs

BreakerSnapshot

What one breaker holds right now, in this process.

BreakerState 🔒

Enums

ScopeKey

What one breaker counts failures for.

Constants

FAILURE_RUN_MEMORY 🔒

How long a run of failures that never tripped the breaker is remembered, so a scope never run again leaves the map. Much longer than a worker tick, so a real outage never loses its count.

MAX_CONSECUTIVE_SUOTAR_FAILURES

SUOTAR_COOLDOWN_SECS

TEST_SUOTAR_COOLDOWN_SECS

Playwright’s per-test budget is 100 s, which the production cooldown does not fit inside: a test that trips the breaker deliberately has to be able to watch it recover.

Statics

BREAKERS 🔒

Functions

cooldown

is_open

Whether the phases that call the study registry should skip this iteration.

lock 🔒

record_failure

Returns whether this failure opened the breaker.

record_success

snapshot

Reads a breaker without touching it, for the dashboard. Not is_open, which clears an elapsed cooldown as a side effect.