Files
SlabUploader/backend/inference.py
T
Ty cec03c5bd3 fix(m3): AI-assist scope + confidence gate + grouped wood categories
- inference: _taxonomy_lists hands the model the synced species leaves + wood
  leaves + case-insensitive attribute terms (was furniture roots / empty)
- inference: CALL1_SEED pins exact flat schema + *_confidence keys, drops grade
- inference: _gate maps field->confidence key correctly (was species_id_confidence),
  reads nested shape as safety net, omits grade (METADATA-40)
- review.svelte: figure gets AI assist, grade dropped from AI (owner judgment)
- MultiSelect: grouped mode (parents non-selectable headers, selectable leaves)
- METADATA-40 updated: grade not suggested by Call 1
2026-09-20 21:47:36 -07:00

424 lines
19 KiB
Python

"""Inference (S7): prompt revisions (REST), Call 1 vision classification, Call 2
content prose, test-inference, inference-off server description, inference_log.
Cites METADATA-35..115, SETTINGS-30/45/90.
"""
import base64
import hashlib
import json
import time
import urllib.error
import urllib.request
from typing import Any
from fastapi import APIRouter
from fastapi.responses import JSONResponse
from .db import get_connection
from .crypto import decrypt
router = APIRouter(prefix="/api/v1")
CALL1_SEED = (
"Classify the slab's species, wood categories, edge type, and figure from the supplied "
"photos, choosing ONLY from the supplied synced taxonomy lists (invent no category, term, "
"or id outside them). Map free-text observations (character, inclusions, voids, checks) to "
"the supplied feature-tag list only. Grade is NOT suggested — leave it out.\n"
"Return a single JSON object with EXACTLY these top-level keys, in this shape:\n"
"{\"species_id\": <id or null>, \"species_confidence\": <0-1>, "
"\"wood_category_ids\": [<id>, ...], \"wood_category_confidence\": <0-1>, "
"\"edge_type_term_id\": <id or null>, \"edge_confidence\": <0-1>, "
"\"figure_term_ids\": [<id>, ...], \"figure_confidence\": <0-1>, "
"\"character\": [...], \"inclusions\": [...], \"voids\": [...], \"checks\": [...]}\n"
"Each *_confidence is a top-level sibling of its field (do NOT nest confidences under a "
"'confidence' object). Use 0-1 numbers; set a field to null / [] when you cannot identify it."
)
CALL2_SEED = (
"Write the long product description for the slab from the supplied photos and listing "
"facts. The name and short description are already built, so do not repeat them. Use the "
"brand voice and geo context given. The dimensions in the fact block are exact: use those "
"strings and invent no numbers. Write prose a premium lumber buyer would read."
)
_SEEDS = {"call1": CALL1_SEED, "call2": CALL2_SEED}
_THRESHOLD = 0.7
def _error(code: str, message: str, detail: Any = None) -> dict:
return {"error": {"code": code, "message": message, "detail": detail}}
def _now() -> str:
from datetime import datetime, timezone
return datetime.now(timezone.utc).replace(microsecond=0, tzinfo=None).isoformat()
def _hash(text: str) -> str:
return hashlib.sha256(text.encode("utf-8")).hexdigest()
def _seed_prompts(conn) -> None:
for name, seed in _SEEDS.items():
if conn.execute("SELECT 1 FROM prompts WHERE name=?", (name,)).fetchone():
continue
cur = conn.execute(
"INSERT INTO prompts(name, active_revision_id, created_at, updated_at) VALUES (?,?,?,?)",
(name, None, _now(), _now()),
)
pid = cur.lastrowid
cur2 = conn.execute(
"INSERT INTO prompt_revisions(prompt_id, content, content_hash, created_at, created_by) VALUES (?,?,?,?,?)",
(pid, seed, _hash(seed), _now(), "seed"),
)
conn.execute("UPDATE prompts SET active_revision_id=? WHERE id=?", (cur2.lastrowid, pid))
def _active_prompt(conn, call: str) -> tuple[int, str] | None:
row = conn.execute(
"SELECT p.id, pr.id, pr.content FROM prompts p LEFT JOIN prompt_revisions pr ON p.active_revision_id=pr.id WHERE p.name=?",
(call,),
).fetchone()
if row is None or row[2] is None:
return None
return row[1], row[2]
# ---------- Prompt revision REST (METADATA-106) ----------
@router.post("/prompts/{call}/revisions", status_code=201)
async def append_revision(call: str, payload: dict[str, Any]) -> dict:
if call not in _SEEDS:
return JSONResponse(status_code=404, content=_error("not_found", "unknown call"))
content = payload.get("content")
if not content:
return JSONResponse(status_code=400, content=_error("validation", "content required"))
conn = get_connection()
_seed_prompts(conn)
prow = conn.execute("SELECT id FROM prompts WHERE name=?", (call,)).fetchone()
cur = conn.execute(
"INSERT INTO prompt_revisions(prompt_id, content, content_hash, created_at, created_by) VALUES (?,?,?,?,?)",
(prow[0], content, _hash(content), _now(), "api"),
)
conn.execute("UPDATE prompts SET active_revision_id=?, updated_at=? WHERE id=?", (cur.lastrowid, _now(), prow[0]))
conn.commit()
return {"id": cur.lastrowid, "prompt": call, "content_hash": _hash(content)}
@router.post("/prompts/{call}/activate")
async def activate_revision(call: str, payload: dict[str, Any]) -> dict:
if call not in _SEEDS:
return JSONResponse(status_code=404, content=_error("not_found", "unknown call"))
rev_id = payload.get("revision_id")
conn = get_connection()
_seed_prompts(conn)
prow = conn.execute("SELECT id FROM prompts WHERE name=?", (call,)).fetchone()
row = conn.execute(
"SELECT id FROM prompt_revisions WHERE id=? AND prompt_id=?", (rev_id, prow[0])
).fetchone()
if row is None:
return JSONResponse(status_code=404, content=_error("not_found", "revision not found"))
conn.execute("UPDATE prompts SET active_revision_id=?, updated_at=? WHERE id=?", (rev_id, _now(), prow[0]))
conn.commit()
return {"ok": True, "active_revision_id": rev_id}
@router.get("/prompts/{call}")
async def get_prompt(call: str) -> dict:
if call not in _SEEDS:
return JSONResponse(status_code=404, content=_error("not_found", "unknown call"))
conn = get_connection()
_seed_prompts(conn)
prow = conn.execute("SELECT * FROM prompts WHERE name=?", (call,)).fetchone()
revs = conn.execute(
"SELECT id, content_hash, created_at, created_by FROM prompt_revisions WHERE prompt_id=? ORDER BY id",
(prow[0],),
).fetchall()
active = conn.execute(
"SELECT content FROM prompt_revisions WHERE id=?", (prow["active_revision_id"],)
).fetchone()
return {
"name": call,
"active_revision_id": prow["active_revision_id"],
"active_content": active[0] if active else None,
"revisions": [dict(r) for r in revs],
}
# ---------- Inference client (OpenAI-compatible, stdlib) ----------
class InferenceClient:
def __init__(self, base_url: str, api_key: str, model: str, timeout: float = 60.0):
self.base_url = base_url.rstrip("/")
self.api_key = api_key
self.model = model
self.timeout = timeout
def chat(self, messages: list[dict]) -> str:
url = f"{self.base_url}/chat/completions"
body = json.dumps({"model": self.model, "messages": messages}).encode("utf-8")
req = urllib.request.Request(
url, data=body,
headers={"Authorization": f"Bearer {self.api_key}", "Content-Type": "application/json"},
method="POST",
)
try:
with urllib.request.urlopen(req, timeout=self.timeout) as resp:
data = json.loads(resp.read().decode("utf-8"))
except urllib.error.HTTPError as e:
raise InferenceError(f"inference HTTP {e.code}") from e
except urllib.error.URLError as e:
raise InferenceConnectionError(f"inference unreachable: {e.reason}") from e
return data["choices"][0]["message"]["content"]
class InferenceError(Exception):
pass
class InferenceConnectionError(InferenceError):
pass
def _inference_creds(conn) -> tuple[str, str, str]:
b = conn.execute("SELECT value_enc FROM settings WHERE key='inference_base_url'").fetchone()
k = conn.execute("SELECT value_enc FROM settings WHERE key='inference_api_key'").fetchone()
m = conn.execute("SELECT value FROM settings WHERE key='inference_model'").fetchone()
return (decrypt(b[0]) if b and b[0] else ""), (decrypt(k[0]) if k and k[0] else ""), (m[0] if m and m[0] else "")
def _enabled(conn, key: str) -> bool:
row = conn.execute("SELECT value FROM settings WHERE key=?", (key,)).fetchone()
return bool(row and row[0] in ("true", "True", "1"))
@router.post("/slabs/{slab_id}/inference/call1")
async def call1(slab_id: str) -> dict:
conn = get_connection()
row = conn.execute("SELECT * FROM slabs WHERE id=? AND deleted_at IS NULL", (slab_id,)).fetchone()
if row is None:
return JSONResponse(status_code=404, content=_error("not_found", "Slab not found"))
if not _enabled(conn, "inference_enabled"):
return JSONResponse(status_code=409, content=_error("inference_disabled", "Inference is off"))
base, key, model = _inference_creds(conn)
if not base or not key:
return JSONResponse(status_code=409, content=_error("inference_unconfigured", "Inference is not configured"))
client = InferenceClient(base, key, model)
act = _active_prompt(conn, "call1")
prompt_text = act[1] if act else CALL1_SEED
# Build vision message with processed photos (1024px) + taxonomy lists.
photos = conn.execute(
"SELECT processed_blob FROM slab_photos WHERE slab_id=? AND processed_blob IS NOT NULL ORDER BY seq LIMIT 8",
(slab_id,),
).fetchall()
image_parts = []
for p in photos:
image_parts.append({
"type": "image_url",
"image_url": {"url": f"data:image/png;base64,{base64.b64encode(p[0]).decode()}"},
})
tax = _taxonomy_lists(conn)
text = (f"{prompt_text}\n\nSYNCED TAXONOMY (only legal choices):\n{json.dumps(tax)}\n\n"
f"SKU={row['sku']} length_in={row['length_in']} thickness_in={row['thickness_in']}")
messages = [{"role": "user", "content": image_parts + [{"type": "text", "text": text}]}]
t0 = time.time()
try:
raw = client.chat(messages)
except InferenceConnectionError as e:
return JSONResponse(status_code=503, content=_error("inference_unreachable", str(e), {"recoverable": True}))
except InferenceError as e:
return JSONResponse(status_code=502, content=_error("inference_failed", str(e), {"recoverable": True}))
latency = int((time.time() - t0) * 1000)
parsed = _parse_json(raw)
_log_call(conn, slab_id, 1, act[0] if act else None, model, messages, raw, latency)
# Apply confidence gate (METADATA-45).
suggestions = _gate(parsed)
return {"ok": True, "suggestions": suggestions}
def _taxonomy_lists(conn) -> dict:
# METADATA-10: categories are leaves only; parents group only. Resolve groupers BY SLUG
# (never hardcoded id, QUALITY-105) and match attribute names case-insensitively (the
# live Woo attribute is 'Edge type', not 'Edge Type').
out = {"species_leaves": [], "wood_category_leaves": [], "edge_terms": [], "figure_terms": [],
"grade_terms": [], "thickness_terms": [], "moisture_terms": [], "feat_tags": []}
# species = leaves under the 'species' grouper
sp = conn.execute("SELECT id FROM woo_categories WHERE slug='species'").fetchone()
if sp:
for r in conn.execute(
"SELECT id,name FROM woo_categories WHERE parent_id=?", (sp[0],)
).fetchall():
out["species_leaves"].append({"id": r[0], "name": r[1]})
# wood categories = leaves under the 'wcat' grouper (leaves may sit under sub-groupers).
wc = conn.execute("SELECT id FROM woo_categories WHERE slug='wcat'").fetchone()
if wc:
kids = [r[0] for r in conn.execute(
"SELECT id FROM woo_categories WHERE parent_id=?", (wc[0],)
).fetchall()]
leaf_ids = []
for cid in kids:
has_kids = conn.execute(
"SELECT 1 FROM woo_categories WHERE parent_id=? LIMIT 1", (cid,)
).fetchone()
if has_kids:
leaf_ids.extend(r[0] for r in conn.execute(
"SELECT id FROM woo_categories WHERE parent_id=?", (cid,)
).fetchall())
else:
leaf_ids.append(cid)
if leaf_ids:
q = ",".join("?" * len(leaf_ids))
for r in conn.execute(
"SELECT id,name FROM woo_categories WHERE id IN (%s)" % q, leaf_ids
).fetchall():
out["wood_category_leaves"].append({"id": r[0], "name": r[1]})
# attribute terms, case-insensitive on the attribute name. Grade stays in the synced set
# (owner reference) but the model is told not to suggest it (METADATA-40).
for attr, key in (("Edge type", "edge_terms"), ("Figure", "figure_terms"),
("Grade", "grade_terms"), ("Thickness", "thickness_terms"),
("Moisture", "moisture_terms")):
rows = conn.execute(
"SELECT t.id,t.name FROM woo_attribute_terms t JOIN woo_attributes a ON t.attribute_id=a.id "
"WHERE lower(a.name)=lower(?)",
(attr,),
).fetchall()
out[key] = [{"id": r[0], "name": r[1]} for r in rows]
for r in conn.execute("SELECT id,name FROM woo_tags WHERE slug LIKE 'feat-%'").fetchall():
out["feat_tags"].append({"id": r[0], "name": r[1]})
return out
def _parse_json(raw: str) -> dict:
try:
s = raw.strip()
if s.startswith("```"):
s = s.split("```")[1]
if s.startswith("json"):
s = s[4:]
return json.loads(s)
except (ValueError, IndexError):
return {}
def _gate(parsed: dict) -> dict:
"""Apply the 0.7 confidence gate; below-threshold fields are omitted (METADATA-45).
Confidence is read from the flat '<field>_confidence' keys; as a safety net it also
understands the nested 'confidence: {<field>: n}' shape some models emit, so a shape
wobble cannot silently nuke every suggestion. Grade is not suggested (METADATA-40).
"""
# Map each field to its confidence key. The field name and the confidence key do NOT
# share a stem (e.g. field 'species_id' -> key 'species_confidence'), so derive it
# explicitly rather than f"{field}_confidence".
conf_key = {
"species_id": "species_confidence",
"wood_category_ids": "wood_category_confidence",
"edge_type_term_id": "edge_confidence",
"figure_term_ids": "figure_confidence",
}
conf_obj = parsed.get("confidence") if isinstance(parsed.get("confidence"), dict) else {}
def _conf(field: str) -> Any:
k = conf_key.get(field, f"{field}_confidence")
if k in conf_obj:
return conf_obj[k]
return parsed.get(k)
def keep(field: str) -> Any:
conf = _conf(field)
if isinstance(conf, (int, float)) and conf >= _THRESHOLD and field in parsed:
return parsed[field]
return None
out: dict[str, Any] = {}
if v := keep("species_id"):
out["species_id"] = v
if v := keep("wood_category_ids"):
out["wood_category_ids"] = v
if v := keep("edge_type_term_id"):
out["edge_type_term_id"] = v
if v := keep("figure_term_ids"):
out["figure_term_ids"] = v
# grade intentionally not gated/suggested (METADATA-40: owner judgment).
for k in ("character", "inclusions", "voids", "checks"):
if parsed.get(k):
out[k] = parsed[k]
return out
@router.post("/slabs/{slab_id}/inference/call2")
async def call2(slab_id: str) -> dict:
conn = get_connection()
row = conn.execute("SELECT * FROM slabs WHERE id=? AND deleted_at IS NULL", (slab_id,)).fetchone()
if row is None:
return JSONResponse(status_code=404, content=_error("not_found", "Slab not found"))
if not _enabled(conn, "content_llm_enabled"):
return JSONResponse(status_code=409, content=_error("content_disabled", "Content generation is off"))
base, key, model = _inference_creds(conn)
if not base or not key:
return JSONResponse(status_code=409, content=_error("inference_unconfigured", "Inference is not configured"))
client = InferenceClient(base, key, model)
act = _active_prompt(conn, "call2")
prompt_text = act[1] if act else CALL2_SEED
photos = conn.execute(
"SELECT processed_blob FROM slab_photos WHERE slab_id=? AND processed_blob IS NOT NULL ORDER BY seq LIMIT 8",
(slab_id,),
).fetchall()
image_parts = [
{"type": "image_url", "image_url": {"url": f"data:image/png;base64,{base64.b64encode(p[0]).decode()}"}}
for p in photos
]
brand = conn.execute("SELECT value FROM settings WHERE key='brand_voice'").fetchone()
geo = conn.execute("SELECT value FROM settings WHERE key='geo_context'").fetchone()
text = (f"{prompt_text}\n\nDIMENSION FACT BLOCK (exact, invent no numbers):\n"
f"length={row['length_in']}in thickness={row['thickness_in']}in "
f"avg_width={row['width_avg_in']}in width_min={row['width_min_in']}in width_max={row['width_max_in']}in "
f"bdft={row['bdft']}\n\nBrand voice: {brand[0] if brand else ''}\nGeo: {geo[0] if geo else ''}")
messages = [{"role": "user", "content": image_parts + [{"type": "text", "text": text}]}]
t0 = time.time()
try:
raw = client.chat(messages)
except InferenceConnectionError as e:
return JSONResponse(status_code=503, content=_error("inference_unreachable", str(e), {"recoverable": True}))
except InferenceError as e:
return JSONResponse(status_code=502, content=_error("inference_failed", str(e), {"recoverable": True}))
latency = int((time.time() - t0) * 1000)
_log_call(conn, slab_id, 2, act[0] if act else None, model, messages, raw, latency)
# Store as description, mark content_source=llm.
conn.execute("UPDATE slabs SET description=?, content_source='llm', updated_at=? WHERE id=?",
(raw.strip(), _now(), slab_id))
conn.commit()
return {"ok": True, "description": raw.strip()}
def server_description(slab: dict) -> str:
"""Inference-off long description (METADATA-70)."""
return (
f"A {slab.get('title', 'slab')} from the mill, measured at "
f"{slab.get('length_in')}in long, {slab.get('width_avg_in')}in average width, and "
f"{slab.get('thickness_in')}in thick ({slab.get('bdft')} bdft). "
"Ready to ship."
)
def _log_call(conn, slab_id: str, call: int, rev_id: int | None, model: str,
request: list, response: str, latency_ms: int) -> None:
conn.execute(
"INSERT INTO inference_log(slab_id, call, prompt_revision_id, model, request_payload, response_payload, latency_ms, created_at) "
"VALUES (?,?,?,?,?,?,?,?)",
(slab_id, call, rev_id, model, json.dumps(request)[:200000], response, latency_ms, _now()),
)
conn.commit()
@router.post("/admin/test-inference")
async def test_inference() -> dict:
conn = get_connection()
base, key, model = _inference_creds(conn)
if not base or not key:
return {"ok": False, "mode": "fail", "vision_capable": False, "detail": "Inference is not configured"}
client = InferenceClient(base, key, model, timeout=20.0)
t0 = time.time()
try:
client.chat([{"role": "user", "content": "Reply with the single word: ok"}])
except InferenceConnectionError as e:
return {"ok": False, "mode": "fail", "vision_capable": False, "detail": str(e)}
except InferenceError as e:
return {"ok": False, "mode": "fail", "vision_capable": False, "detail": str(e)}
detail = f"reachable in {int((time.time()-t0)*1000)}ms"
return {"ok": True, "mode": "stateless", "vision_capable": True, "detail": detail}