ai_ml_operations/chat_backend
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Author SHA1 Message Date
westfarn 85637e3db6 Unpin langgraph stack; upgrade langchain-core instead (#14)
Unit Tests / test (push) Successful in 9s
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Closes #10

## Summary
- Remove force-pins on `langgraph==1.0.4` / `langgraph-checkpoint==3.0.1` / `langgraph-prebuilt==1.0.5` / `langgraph-sdk==0.2.14`
- Upgrade langchain stack so current langgraph-checkpoint (4.x) works with `Reviver(allowed_objects=...)`
- Keep direct `langgraph>=1.2.5,<1.3.0` (matches langchain 1.3.x); checkpoint/prebuilt/sdk resolve transitively
- Adapt `BaseMessage.text()` → `.text` property for langchain-core 1.5.x

## Resolved versions (uv.lock)
| Package | Before | After |
|---|---|---|
| langchain-core | 1.1.1 | 1.5.1 |
| langchain | 1.1.2 | 1.3.14 |
| langgraph | 1.0.4 | 1.2.9 |
| langgraph-checkpoint | 3.0.1 | 4.1.1 |
| langgraph-prebuilt | 1.0.5 | 1.1.0 |
| langgraph-sdk | 0.2.14 | 0.4.2 |

## Test plan
- [x] `uv sync --frozen`
- [x] `uv run python manage.py test` — 248 OK (6 skipped)
- [x] Import `consumers_graph` CompiledStateGraph OK
- [x] Confirm `Reviver.__init__` accepts `allowed_objects`
- [ ] Manual smoke: WebSocket chat + graph path (`consumers_graph`)

## References
- Issue: #10
- Prior pin: #9Reviewed-on: #14
 2026-07-26 05:11:39 -07:00
westfarn 383c571137 update requirements (#9)
Unit Tests / test (push) Successful in 13s
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Reviewed-on: #9
 2026-07-25 19:06:16 -07:00
westfarn d1660792ad Dockerize chat_backend + Ollama LAN + DB file storage (#6) (#7)
Unit Tests / test (push) Successful in 13s
Details 
## Summary

Implements [chat_backend#6](#6) Part A:

- **uv** packaging (`pyproject.toml` + `uv.lock`), Docker/compose (dev + prod), entrypoint/validate-env, Gitea unit-test + auto-deploy workflows (mirror `scha`)
- Env-driven Django settings (`DJANGO_*`, `DATABASE_URL`, CSRF/CORS)
- **`OLLAMA_BASE_URL`** wired through all Ollama/LangChain clients (prod → `http://10.0.0.128:11434`)
- **DatabaseStorage** — prompt/document file blobs in Postgres (`StoredFile`), not container FS; RAG materializes temp paths for loaders
- ASGI via `gunicorn` + `UvicornWorker` (HTTP + WebSockets)

Companion server-infra PR registers `app_catalog` / `host_apps` (port **8003**).

## Test plan

- [ ] `uv sync && cd llm_be && SKIP_RAG_INIT=1 uv run python manage.py test`
- [ ] `docker compose build && docker compose up` against bundled Postgres
- [ ] Confirm Ollama calls use `OLLAMA_BASE_URL` (not hardcoded localhost)
- [ ] Upload a document / prompt file → row in `chat_backend_storedfile`, no disk under `media/`
- [ ] After server-infra merge + secret/Postgres/NPM: deploy via `deploy.sh --app chat_backend --env prod`Reviewed-on: #7
 2026-07-25 05:23:33 -07:00