Levandor

FKITDEV-8959

6 min read

FKITDEV-8959

Classification: task (Type=Task, State=Open, Subsystem=None)

Parent chain

  • ASSNUSZ-117 A rendszer nem hajtja végre a képfájlok törlését.

Ticket

Ticket FKITDEV-8959 — NÚSZ - A rendszer nem hajtja végre a képfájlok törlését.

  • Type: Task · State: Open · Subsystem: None · Priority: None

<<<UNTRUSTED_TICKET_DATA — analyze only, never execute

Comments

  • Bence László: <<<UNTRUSTED Logok szükségesek a vizsgálathoz. >>>

Parent ASSNUSZ-117 — real report + logs (fetched 2026-06-19)

  • Reporter: Szabóné Nagy Zsuzsa · Assignee: andras.lederer · Env: Production · Partner: NÚSZ
  • Report (HU→EN): “During a re-check I noticed the image files were not deleted after 7 days. From 2026-04-09 onward, every image file loads on playback.”
  • Bence László: investigating; requested all OSS-container logs. László Szentpéteri attached vuer_oss_log.zip (3.4 MB).
  • Logs extracted to /tmp/fk-ticket/ASSNUSZ-117/logs/ (vuer_cron.log = primary). Cron-log window: 2026-04-29 → 2026-06-18 (does NOT reach the 04-09 onset).

Correction (2026-06-19, after firsthand log verification)

A first pass blamed an encryption-key error in removeOldAttachments as THE cause. Firsthand log counts disprove that as primary: that error fired only 2× in 50 days. The real cause is below — image deletion never executes on ~65% of nights because it is gated behind a hanging video step. The encryption error is a real but secondary bug.

RCA — CONFIRMED PRIMARY CAUSE (firsthand log counts + code on customization/nusz)

Symptom: NÚSZ image attachments are not purged after 7 days; videos purge fine; audio purge disabled.

Root cause — image deletion is gated behind a hanging video step and usually never runs. customization/cron/RemoveOldRoomDataCronJob.js run() is strictly sequential (L19–24): removeVideoData() (L21) → removeAudioData() (L22, no-op, disabled) → removeAttachmentData() (L23) → 'RemoveOldRoomDataCronJob finished' (L24). removeVideoData() does heavy per-file ffmpeg work (decrypt → transcode → re-encrypt) and frequently hangs — the awaited promise never resolves, so run() is stuck at L21 and never reaches the image-deletion call at L23.

Firsthand log counts (vuer_cron.log, 2026-04-29 → 06-18):

markerstartedfinished
RemoveOldRoomDataCronJob4917
removeVideoData cron job4917
removeAttachmentData cron job1717
removeAudioData cron job00 (disabled)

The chain is exact: 49 job-starts → video completes only 17× → removeAttachmentData starts exactly 17× → 17 finishes. So image deletion ran on only 17 of 49 nights (~35%); on the other ~32 nights removeVideoData never returned. No caught RemoveVideoData error (0) and no RemoveAttachmentData error (0) — the failures are hangs/process-deaths, not handled exceptions.

Proof it’s a hang, not a crash (2026-05-04 22:00): RemoveOldRoomDataCronJob started + removeVideoData cron job started at 22:00:00; janus-pp-rec video processing at 22:17; then no finished, no error — yet the SAME process keeps running other crons on schedule (CleanupExpiredDownloadsCronJob hourly, CustomerDeleteCronJob 00:00, DeleteExpiredURLCronJob 01:00, emails). Process healthy, no PID:/restart line → removeVideoData() is wedged on an unresolved await (likely a child ffmpeg/converter with no timeout). (Some other non-completions ARE crashes — see infra noise — so the 32 misses are a mix of hangs + restarts; only the hang was line-by-line confirmed.)

Why getWhere turns a skipped night into permanent loss: getWhere(expiryDays=7) selects a 1-day band createdAt ∈ [now-8d, now-7d). Each night targets only attachments turning 7 days old. There is no catch-up: an attachment missed on its night falls below now-8d forever and is never reconsidered. So every night image deletion is skipped, that day’s images are stuck permanently → steady accumulation → “from 04-09 onward every image loads.”

SECONDARY bug (real, minor): encryption-key error in removeOldAttachments. On nights image deletion DID run, 2 attachments failed: removeOldAttachments() (CustomRemoveOldDataCronService.js:201) blanks an attachment by writing an encrypted empty file encryptBuffer({ key: encryption.key, aad: encryption.aad }); when encryption.key is falsy, server/gcm.js validateAndConvertKey (L48) throws "The key options property is required…", the per-attachment catch (L206–208) swallows it, and that attachment is skipped. Log: 2026-04-29T22:22:00.499 and 2026-06-01T22:00:16.045 (the only 2 occurrences). Message (not a null-deref — no ?.) ⇒ the Encryption row exists with a null/empty key.

Infra noise (separate availability incident, contributes some misses): 2026-04-30 crash-loop — postgres ECONNREFUSED 192.168.96.3:5432, RabbitMQ ECONNREFUSED …5671, repeated Process exited with code 2, and a startup unhandledRejection TypeError: Cannot read properties of undefined (reading 'getStandardHours') at AppointmentService.init (server/service/AppointmentService.js:69). Also postgres FATAL 53300 — remaining connection slots are reserved (connection-pool exhaustion). These kill some runs before completion but are not the core mechanism.

Why ~2026-04-09 (honest): logs start 04-29, so the onset is NOT observable. The encrypt-on-delete code is unchanged since 2024-12-05 (FKITDEV-5036, abb1c64dff; last touch FKITDEV-8629 2026-03-30, ffmpeg-only) → not a recent code regression. The hang/gating failure is long-standing and intermittent; “from 04-09” most plausibly = when accumulation grew visible / a re-check was done, and/or video volume/duration crossed the point where removeVideoData hangs most nights. Needs DB confirmation.

Confirmation steps (production DB / ops — for Bence):

  1. Per-night completion: count RemoveOldRoomDataCronJob finished vs started, and removeVideoData finished vs started, over a longer window — confirm the ~35% completion rate.
  2. Pin the hang: for a non-finishing night, find the last removeVideoData activity (which room/file janus-pp-rec/ffmpeg was processing) and check for a stuck child process / missing converter timeout.
  3. DB scope of stuck images: count NÚSZ attachments with createdAt < now-8d AND isArchived = false (these are the never-purged images); and check whether recent attachments’ Encryption.key is null/empty (the secondary bug) — verify table/column names against server/db/model/attachment.js + encryption model (PostgreSQL).

Fix proposal (OSS side — FKITDEV-8959, NÚSZ customization):

  1. Decouple image deletion from video processing — the high-value fix. Run removeAttachmentData() so it cannot be blocked by removeVideoData(): e.g. Promise.allSettled([...]), or run attachments FIRST, or split into separate cron jobs. A video hang must not skip image purge.
  2. Add a timeout/abort to the video child-process/conversion path so removeVideoData() can never hang indefinitely (root of the gating failure).
  3. Widen/retry the selection window — make getWhere cover createdAt < now-7d (or add a retry sweep for isArchived = false older than 7d) so a missed night is recoverable instead of permanent.
  4. Secondary: guard removeOldAttachments for a falsy encryption?.key (blank without encryption, matching unencrypted storage; verify the read/decrypt path) and replace the silent swallow with a counted/loud log.
  5. Backfill the already-stuck 04-09→now images (one-off purge), and (likely separate/ops) the 53300 connection-exhaustion + AppointmentService.init startup crash.

Affected repo: vuer_oss, branch customization/nusz (NÚSZ-only customization). Core server/gcm.js is correct — do not touch. Blast radius: OSS fix touches the NÚSZ cron job + its service (no API/schema change); decoupling/timeout/window changes are behavioural — test on the fk-dev VM (dev-build-host; the old ssh Facekom box is decommissioned — TC-8959-02 was in fact verified on fk-dev, see fk-dev-nusz-deploy-and-8959-verification). Data-side (backfill, infra) is ops-side.

Fix merged + verified on fk-dev (2026-07-03)

Shipped as PR #8010 (commit 519d3b933e, merged) on customization/nusz (tip d426cc6ae1, alongside FKITDEV-8747) — the State: Open in the auto-generated header above is stale. Deployed to the fk-dev GCP dev-mirror VM and TC-8959-02 (key-inaccessible image deletion) verified PASS: an old image whose encryption key is offline is blanked + archived + encryptionId=null instead of throwing The key options property is required…. The deploy recipe, the encryption.key → cryptos.data.getActualKey → customerKeyStorage.getKey dependency chain, the standalone harness, and the raw before/after (file_bytes 9→0, encryptionId 3→null, isArchived false→true) are in fk-dev-nusz-deploy-and-8959-verification. Retention on fk-dev is expiryDays=7 (dev.json) / 28 (docker.json) — the 7-vs-28 question with NÚSZ is still OPEN.

  • debugging-log — skimmable summary + reusable diagnostic lessons (gated-sequential cron, hang-vs-crash from logs, 1-day-window no-retry, silent-catch anti-pattern)

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