Move text-service batch-download zips off local disk into Postgres (mothra#230, BATCH_DIR half) - #299
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Move text-service batch-download zips off local disk into Postgres (mothra#230, BATCH_DIR half)#299kyrieb-ekat wants to merge 2 commits into
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Alpha 3, row 30's BATCH_DIR half (mothra#230). text-service gains its own
Postgres access (text-service/db.py) instead of writing batch zips to
tempfile.gettempdir()/mothra-text/batches:
- new text_batch_zips table (batch_id, zip_bytes BYTEA), schema created by
the existing one-shot migrate.py/init_db() alongside every other table --
text-service has no migration infra of its own and this is the same
physical Postgres database, so schema ownership stays centralized rather
than reintroducing import-time DDL in a second service (the exact
anti-pattern row 31 just removed from the backend).
- text-service/db.py: a small connection pool + batch_zip_put/batch_zip_get,
DML only -- no DDL, no cleanup code of its own.
- /batch-run now zips in memory and stores the bytes via batch_zip_put;
/batch-download/{id} reads them back via batch_zip_get instead of
FileResponse from local disk.
- retention: job_store.cleanup_stale_batch_zips joins the worker's existing
hourly Celery-beat sweep (job_uploads/job_sessions) -- since the table
lives in the shared DB, the worker can clean it up directly with no new
HTTP call to text-service, so the old local-disk startup sweep is gone
outright rather than replaced.
- wired DATABASE_URL into text-service everywhere it runs: dev.sh (moved
`start text` to after migrate.py, alongside backend/worker, since it now
depends on the same schema), docker-compose.yml (+ depends_on: migrate),
k8s/text-service.yaml + k8s/staging/text-service.yaml (envFrom
mothra-secrets / mothra-secrets-staging).
- updated CLAUDE.md, k8s/README.md, and ALPHA_TRANSITION_PLAN.md's findings
register/decision log for doc freshness -- the old "needs shared storage
at scale" known-follow-up and the "batch-zip sweep unchanged" note are
both resolved now.
NEON_MANIFESTS_DIR (row 30's other half) is tracked separately -- still
open in mothra#230, landing on its own branch/PR.
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📝 WalkthroughWalkthroughThe text service now stores batch-download ZIPs in PostgreSQL. Shared schema cleanup removes expired ZIPs. Local, Compose, and Kubernetes deployment configuration supplies ChangesBatch ZIP storage migration
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🔵 Low · up to This change moves batch ZIP storage to PostgreSQL, but the development startup script can currently discard an exported database URL and start text-service without database access, breaking local batch creation or download. The PR is otherwise mergeable with explicit owner follow-up on this configuration fix and the bounded documentation/readiness updates. Suggested reviewers: Sequence Diagram(s)sequenceDiagram
participant Client
participant text_service
participant PostgreSQL
participant CeleryBeat
Client->>text_service: POST /batch-run
text_service->>PostgreSQL: Store ZIP bytes in text_batch_zips
Client->>text_service: GET /batch-download/{batch_id}
text_service->>PostgreSQL: Retrieve ZIP bytes
PostgreSQL-->>text_service: ZIP bytes or missing row
text_service-->>Client: ZIP response or 404
CeleryBeat->>PostgreSQL: Delete expired text_batch_zips rows
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 38.46% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 13 functions across 6 files. (7 skipped: 7 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@CLAUDE.md`:
- Line 56: Update the text_batch_zips documentation to state that
text-service/db.py inserts and reads ZIP records, while the landing-page
worker’s cleanup_stale_batch_zips() deletes stale rows; remove the inaccurate
claim that landing-page never queries the table.
- Around line 923-931: Update the cleanup description in the documentation to
call the former text_batch_zips behavior a “startup-only local-disk sweep” with
its 86400-second TTL, replacing the inaccurate “unswept local-disk TTL” wording
while preserving the surrounding cleanup schedule details.
- Around line 140-144: Update the database setup instructions near the
text-service startup command to state that the migration must be run before
creating or downloading batches, since the /batch-run write also requires
text_batch_zips. Keep the existing migration reference and one-shot migration
guidance consistent.
In `@dev.sh`:
- Around line 214-220: Initialize SHARED_DB_URL from the existing exported
DATABASE_URL before attempting to read landing-page/scripts/.env, so the
inherited value is preserved when the file is absent. Keep the current .env
parsing and quote-stripping behavior, allowing the file’s DATABASE_URL to
override the exported value when present.
In `@k8s/README.md`:
- Around line 214-217: Add a separate database-aware readiness endpoint for
batch availability, checking PostgreSQL connectivity used by batch_zip_put and
batch_zip_get, while preserving /healthz as the liveness probe. Update the batch
service Kubernetes readiness probe to use the new endpoint and leave its
liveness probe targeting /healthz.
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CLAUDE.mddev.shdocker-compose.ymldocumentation_allons-y/ALPHA_TRANSITION_PLAN.mdk8s/README.mdk8s/staging/text-service.yamlk8s/text-service.yamllanding-page/scripts/auth_api.pylanding-page/scripts/job_store.pylanding-page/scripts/tasks_cleanup.pytext-service/db.pytext-service/main.pytext-service/requirements.txt
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This was referenced Aug 26, 2026
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- CLAUDE.md: text_batch_zips's schema table row claimed landing-page never queries the table -- job_store.cleanup_stale_batch_zips does (DELETE, run from the worker). Corrected to describe the actual insert/read/delete split. - CLAUDE.md: Terminal 2's manual-start comment said the migration only needs to run before the first batch *download* -- /batch-run's write (batch_zip_put) needs the table too. Now says "batch run or download". - CLAUDE.md: "unswept local-disk TTL" overstated the old behavior -- there was a startup-only sweep with an 86400s TTL, just not a periodic one. Reworded to say so. - dev.sh: SHARED_DB_URL was unconditionally reset to "" before checking landing-page/scripts/.env, discarding any DATABASE_URL a developer had already exported into their shell (this bug predates this PR -- same pattern as the old IC_DB_URL var -- but this PR doubled its blast radius by also gating text-service's batch storage on it). Now seeds from an already-exported DATABASE_URL first, matching the "environment wins over .env" precedence used elsewhere in this repo.
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Spun off from #220 row 30, tracked in #230. Implements the BATCH_DIR half only — text-service gains its own Postgres access, storing finished batch-download zips in a new
text_batch_zipstable instead oftempfile.gettempdir()/mothra-text/batches.What changed
text_batch_zipstable — created by the existing one-shotmigrate.py/init_db()alongside every other table. text-service has no migration infrastructure of its own, and this is the same physical Postgres database, so schema ownership stays centralized rather than reintroducing import-time DDL in a second service (the exact anti-pattern row 31 just removed from the backend).text-service/db.py— a small connection pool +batch_zip_put/batch_zip_get. DML only, no DDL, no cleanup code./batch-runnow zips in memory and stores the bytes;/batch-download/{id}reads them back from Postgres instead ofFileResponse-ing a local file.job_store.cleanup_stale_batch_zipsjoins the worker's existing hourly Celery-beat sweep (job_uploads/job_sessions). Since the table lives in the shared DB, the worker cleans it up directly — no new HTTP call to text-service needed — so the old local-disk startup sweep is gone outright, not replaced.DATABASE_URLwired into text-service everywhere it runs:dev.sh(movedstart textto aftermigrate.py, alongside backend/worker, since it now depends on the same schema),docker-compose.yml(+depends_on: migrate),k8s/text-service.yaml+k8s/staging/text-service.yaml(envFrom: mothra-secrets/mothra-secrets-staging).CLAUDE.md,k8s/README.md,ALPHA_TRANSITION_PLAN.mdupdated — the old "needs shared storage at scale" known-follow-up and "batch-zip sweep unchanged" note are both resolved.NEON_MANIFESTS_DIR(row 30's other half) is tracked separately and lands on its own branch/PR.Verification
Not yet run end-to-end in this environment (no local Postgres/venvs available here) — all touched Python files pass
ast.parse,docker-compose.yml/k8s YAML reviewed for indentation. Before merge: run./dev.sh, run a real text-finding batch through the UI, download the resulting zip, and confirmSELECT batch_id, octet_length(zip_bytes) FROM text_batch_zips;round-trips with no file appearing under the old tempdir path.🤖 Generated with Claude Code
Summary by CodeRabbit
New Features
Bug Fixes
Documentation