File size: 7,561 Bytes
1c0c94d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 | """The only module that touches the database and the image store.
DB: SQLModel/SQLAlchemy — the connection URL selects SQLite (local dev default) or
Postgres (full stack). Images: local filesystem now; a MinIO/S3 backend plugs in behind
the same functions without touching callers.
"""
from __future__ import annotations
import os
from datetime import datetime
from typing import Any
from sqlalchemy import JSON, Column
from sqlmodel import Field, Session, SQLModel, col, create_engine, select
from core.config import get_settings
from core.schemas import ImageMeta, ImageStatus, Route, Violation
_settings = get_settings()
_connect_args = (
{"check_same_thread": False} if _settings.database_url.startswith("sqlite") else {}
)
engine = create_engine(_settings.database_url, connect_args=_connect_args)
class ImageRow(SQLModel, table=True):
id: str = Field(primary_key=True)
filename: str
camera_id: str | None = None
status: str = ImageStatus.pending.value
created_at: datetime = Field(default_factory=datetime.utcnow)
class ViolationRow(SQLModel, table=True):
id: str = Field(primary_key=True)
image_id: str = Field(index=True)
type: str = Field(index=True)
route: str = Field(default="", index=True)
review_status: str = Field(default="", index=True) # ""|pending|approved|rejected
payload: dict[str, Any] = Field(default_factory=dict, sa_column=Column(JSON))
created_at: datetime = Field(default_factory=datetime.utcnow)
def init_db() -> None:
os.makedirs(_settings.image_dir, exist_ok=True)
SQLModel.metadata.create_all(engine)
# --- images -------------------------------------------------------------- #
def save_image(meta: ImageMeta) -> None:
with Session(engine) as s:
s.add(
ImageRow(
id=meta.id,
filename=meta.filename,
camera_id=meta.camera_id,
status=meta.status.value,
)
)
s.commit()
def set_status(image_id: str, status: ImageStatus) -> None:
with Session(engine) as s:
row = s.get(ImageRow, image_id)
if row is not None:
row.status = status.value
s.add(row)
s.commit()
def get_image(image_id: str) -> ImageRow | None:
with Session(engine) as s:
return s.get(ImageRow, image_id)
def _ext(filename: str) -> str:
return os.path.splitext(filename)[1] or ".jpg"
def save_upload(image_id: str, filename: str, data: bytes) -> str:
path = os.path.join(_settings.image_dir, f"{image_id}{_ext(filename)}")
with open(path, "wb") as fh:
fh.write(data)
return path
def original_path(image_id: str) -> str | None:
row = get_image(image_id)
if row is None:
return None
return os.path.join(_settings.image_dir, f"{image_id}{_ext(row.filename)}")
def annotated_path(image_id: str) -> str:
return os.path.join(_settings.image_dir, f"{image_id}_annotated.jpg")
# --- violations ---------------------------------------------------------- #
def add_violation(v: Violation) -> None:
review_status = "pending" if v.route == Route.human_review else ""
payload = v.model_dump(mode="json")
payload["review_status"] = review_status
payload["audit"] = []
with Session(engine) as s:
s.add(
ViolationRow(
id=v.id,
image_id=v.image_id,
type=v.type,
route=v.route.value,
review_status=review_status,
payload=payload,
)
)
s.commit()
def list_violations(
limit: int = 200,
type: str | None = None,
route: str | None = None,
review_status: str | None = None,
plate: str | None = None,
) -> list[dict[str, Any]]:
with Session(engine) as s:
stmt = select(ViolationRow)
if type:
stmt = stmt.where(ViolationRow.type == type)
if route:
stmt = stmt.where(ViolationRow.route == route)
if review_status:
stmt = stmt.where(ViolationRow.review_status == review_status)
stmt = stmt.order_by(col(ViolationRow.created_at).desc()).limit(limit)
out = [r.payload for r in s.exec(stmt).all()]
if plate:
needle = plate.upper()
out = [p for p in out if needle in ((p.get("plate") or {}).get("text") or "")]
return out
def get_violation(violation_id: str) -> dict[str, Any] | None:
"""Full stored payload (scores, audit, sufficiency, hash) for the detail view."""
with Session(engine) as s:
row = s.get(ViolationRow, violation_id)
return row.payload if row is not None else None
def image_dims(image_id: str) -> dict[str, int] | None:
"""Original image width/height (for overlay rendering). Read on demand via PIL."""
path = original_path(image_id)
if not path or not os.path.exists(path):
return None
try:
from PIL import Image
with Image.open(path) as im:
w, h = im.size
return {"width": int(w), "height": int(h)}
except Exception: # noqa: BLE001
return None
def violations_for(image_id: str) -> list[dict[str, Any]]:
with Session(engine) as s:
rows = s.exec(
select(ViolationRow).where(ViolationRow.image_id == image_id)
).all()
return [r.payload for r in rows]
def review_queue(limit: int = 200) -> list[dict[str, Any]]:
return list_violations(limit=limit, review_status="pending")
def review(
violation_id: str,
decision: str,
reviewer: str | None = None,
note: str | None = None,
) -> dict[str, Any] | None:
with Session(engine) as s:
row = s.get(ViolationRow, violation_id)
if row is None:
return None
payload = dict(row.payload)
payload["review_status"] = decision
audit = list(payload.get("audit", []))
audit.append(
{
"action": "review",
"decision": decision,
"reviewer": reviewer or "anonymous",
"note": note or "",
"ts": datetime.utcnow().isoformat(),
}
)
payload["audit"] = audit
row.review_status = decision
row.payload = payload
s.add(row)
s.commit()
return payload
def analytics() -> dict[str, Any]:
by_type: dict[str, int] = {}
by_route: dict[str, int] = {}
by_day: dict[str, int] = {}
total = 0
pending = 0
plates_read = 0
plates_valid = 0
with Session(engine) as s:
for r in s.exec(select(ViolationRow)).all():
by_type[r.type] = by_type.get(r.type, 0) + 1
by_route[r.route] = by_route.get(r.route, 0) + 1
day = r.created_at.date().isoformat()
by_day[day] = by_day.get(day, 0) + 1
total += 1
if r.review_status == "pending":
pending += 1
plate = (r.payload or {}).get("plate")
if plate and plate.get("text"):
plates_read += 1
if plate.get("regex_ok"):
plates_valid += 1
return {
"total": total,
"pending_review": pending,
"plate_ocr_enabled": _settings.plate_provider != "null",
"plates_read": plates_read,
"plates_valid": plates_valid,
"by_type": by_type,
"by_route": by_route,
"by_day": dict(sorted(by_day.items())),
}
def summary() -> dict[str, int]:
return analytics()["by_type"]
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