Andrey Antukh c0b4430293 ✨ Add the exporter worker pollers and the export jobs run ...

The `:exporter` queue gets its consumer: K pollers (the new
`:exporter-worker-concurrency`), each one with its own Redis
connection, so the blocking BLPOP is both the semaphore of the slot and
the backpressure: a poller claims one job and does not pop again until
the job settles. The dispatcher's `[job-id, scheduled-at]` payloads are
read per pop; a corrupt payload is logged and dropped, a Redis hiccup
is a failed turn that the loop retries after a small delay, and no
test exercises the forever loop directly.

The run of the `:export-assets` job ports the legacy export machinery
to the substrate: the item transducers and partitioning of
export-shapes, the zip assembly and the pdfunite join of export-frames,
rendering as the session the backend minted. The progress contract
dresses the beats (`:preparing`, `:rendering`, `:packaging` with the
`objects` and `pages` counters, throttled per object) and the settle is
one `complete-job` multipart that stores the artifact and closes the
session; an export failure settles as `fail-job` with the session id,
self-contained, so the loop only ever sees a resolved run.

AI-assisted-by: glm-5.3-flash

2026-10-07 14:03:09 +02:00

..

exporter_tests

✨ Add the exporter worker pollers and the export jobs run

2026-10-07 14:03:09 +02:00