442 lines
14 KiB
Python
442 lines
14 KiB
Python
from __future__ import annotations
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import json
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import os
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from dataclasses import dataclass
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from datetime import date, datetime, timezone
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from typing import Any, Iterable, Sequence
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.models.chat_generation_task import ChatGenerationTask
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from app.models.generated_resource import GeneratedResource
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from app.models.generation_record import GenerationRecord
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from app.models.user_resource_month_stat import UserResourceMonthStat
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from app.models.user_resource_total_stat import UserResourceTotalStat
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from app.utils.id_gen import generate_id
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SOURCE_MODEL_CHAT_TASK = "ChatGenerationTask"
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SOURCE_MODEL_GENERATION_RECORD = "GenerationRecord"
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@dataclass(slots=True)
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class ResourceAccountingResult:
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resource_id: str
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resource_type: str
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file_size_bytes: int
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active_size_delta: int
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def resource_month_from_datetime(value: datetime | None = None) -> date:
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value = value or datetime.now(timezone.utc)
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return date(value.year, value.month, 1)
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def safe_file_size(path: str | None) -> int:
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if not path:
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return 0
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try:
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return int(os.path.getsize(path))
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except OSError:
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return 0
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def _json(data: Any) -> str | None:
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if data is None:
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return None
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if isinstance(data, str):
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return data
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return json.dumps(data, ensure_ascii=False, default=str)
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def _parse_json(text: str | None) -> dict:
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if not text:
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return {}
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try:
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data = json.loads(text)
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return data if isinstance(data, dict) else {}
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except Exception:
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return {}
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def _int(value: int | None) -> int:
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return int(value or 0)
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def _add_non_negative(obj: Any, field: str, delta: int) -> None:
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current = _int(getattr(obj, field, 0))
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setattr(obj, field, max(0, current + int(delta or 0)))
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def _add_raw(obj: Any, field: str, delta: int) -> None:
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current = _int(getattr(obj, field, 0))
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setattr(obj, field, current + int(delta or 0))
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async def _get_or_create_month_stat(
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db: AsyncSession,
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user_id: str,
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stat_month: date,
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) -> UserResourceMonthStat:
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result = await db.execute(
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select(UserResourceMonthStat).where(
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UserResourceMonthStat.user_id == user_id,
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UserResourceMonthStat.stat_month == stat_month,
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)
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.limit(1)
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)
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stat = result.scalar_one_or_none()
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if stat:
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return stat
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stat = UserResourceMonthStat(
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id=generate_id(),
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user_id=user_id,
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stat_month=stat_month,
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)
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db.add(stat)
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await db.flush()
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return stat
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async def _get_or_create_total_stat(
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db: AsyncSession,
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user_id: str,
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) -> UserResourceTotalStat:
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result = await db.execute(
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select(UserResourceTotalStat).where(UserResourceTotalStat.user_id == user_id).limit(1)
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)
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stat = result.scalar_one_or_none()
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if stat:
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return stat
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stat = UserResourceTotalStat(
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id=generate_id(),
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user_id=user_id,
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)
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db.add(stat)
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await db.flush()
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return stat
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async def apply_resource_stat_delta(
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db: AsyncSession,
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*,
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user_id: str,
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stat_month: date,
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resource_type: str,
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active_size_delta: int = 0,
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active_count_delta: int = 0,
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deleted_size_delta: int = 0,
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deleted_count_delta: int = 0,
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total_generated_size_delta: int = 0,
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) -> None:
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month_stat = await _get_or_create_month_stat(db, user_id, stat_month)
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total_stat = await _get_or_create_total_stat(db, user_id)
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now = datetime.now(timezone.utc)
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for stat in (month_stat, total_stat):
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_add_non_negative(stat, "active_size_bytes", active_size_delta)
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_add_non_negative(stat, "active_count", active_count_delta)
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_add_non_negative(stat, "deleted_size_bytes", deleted_size_delta)
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_add_non_negative(stat, "deleted_count", deleted_count_delta)
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_add_raw(stat, "total_generated_size_bytes", total_generated_size_delta)
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if resource_type == "image":
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_add_non_negative(stat, "image_size_bytes", active_size_delta)
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_add_non_negative(stat, "image_count", active_count_delta)
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elif resource_type == "video":
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_add_non_negative(stat, "video_size_bytes", active_size_delta)
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_add_non_negative(stat, "video_count", active_count_delta)
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stat.last_recalculated_at = now
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async def record_generated_resource(
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db: AsyncSession,
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*,
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user_id: str,
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resource_type: str,
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resource_url: str,
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source_model: str,
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source_id: str,
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source_model_module: str | None = None,
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remote_url: str | None = None,
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storage_type: str = "local",
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storage_path: str | None = None,
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file_size_bytes: int | None = None,
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engine_id: str | None = None,
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engine_type: str | None = None,
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provider: str | None = None,
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model_name: str | None = None,
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generated_at: datetime | None = None,
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extra: Any = None,
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) -> ResourceAccountingResult:
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"""记录生成成功资源，并增量维护用户月份/全局空间统计。
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file_size_bytes 获取不到时允许为 0，符合当前确认方案。
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同一个 source_model + source_id + resource_type 已存在未软删账本时，更新账本并按大小差值修正统计。
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"""
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resource_type = (resource_type or "").lower().strip()
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if resource_type not in ("image", "video"):
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raise ValueError("resource_type 仅支持 image 或 video")
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if not resource_url:
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raise ValueError("resource_url 不能为空")
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generated_at = generated_at or datetime.now(timezone.utc)
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stat_month = resource_month_from_datetime(generated_at)
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size = int(file_size_bytes if file_size_bytes is not None else safe_file_size(storage_path))
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if size < 0:
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size = 0
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result = await db.execute(
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select(GeneratedResource).where(
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GeneratedResource.source_model == source_model,
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GeneratedResource.source_id == source_id,
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GeneratedResource.resource_type == resource_type,
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GeneratedResource.deleted_at.is_(None),
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).order_by(GeneratedResource.created_at.desc()).limit(1)
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)
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existing = result.scalar_one_or_none()
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if existing:
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old_size = _int(existing.file_size_bytes)
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active_size_delta = size - old_size
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existing.user_id = user_id
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existing.resource_url = resource_url
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existing.remote_url = remote_url
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existing.storage_type = storage_type or existing.storage_type or "local"
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existing.storage_path = storage_path
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existing.file_size_bytes = size
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existing.engine_id = engine_id
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existing.engine_type = engine_type
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existing.provider = provider
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existing.model_name = model_name
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existing.generated_at = generated_at
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existing.resource_month = stat_month
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existing.extra_json = _json(extra)
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if active_size_delta:
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await apply_resource_stat_delta(
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db,
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user_id=user_id,
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stat_month=stat_month,
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resource_type=resource_type,
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active_size_delta=active_size_delta,
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)
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return ResourceAccountingResult(
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resource_id=existing.id,
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resource_type=resource_type,
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file_size_bytes=size,
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active_size_delta=active_size_delta,
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)
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resource = GeneratedResource(
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id=generate_id(),
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user_id=user_id,
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resource_type=resource_type,
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resource_url=resource_url,
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remote_url=remote_url,
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storage_type=storage_type or "local",
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storage_path=storage_path,
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file_size_bytes=size,
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source_model=source_model,
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source_model_module=source_model_module,
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source_id=source_id,
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engine_id=engine_id,
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engine_type=engine_type,
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provider=provider,
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model_name=model_name,
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generated_at=generated_at,
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resource_month=stat_month,
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extra_json=_json(extra),
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)
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db.add(resource)
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await db.flush()
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await apply_resource_stat_delta(
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db,
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user_id=user_id,
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stat_month=stat_month,
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resource_type=resource_type,
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active_size_delta=size,
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active_count_delta=1,
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total_generated_size_delta=size,
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)
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return ResourceAccountingResult(
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resource_id=resource.id,
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resource_type=resource_type,
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file_size_bytes=size,
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active_size_delta=size,
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)
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async def record_chat_task_generated_resource(
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db: AsyncSession,
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task: ChatGenerationTask,
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*,
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resource_url: str,
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storage_path: str | None = None,
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file_size_bytes: int | None = None,
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remote_url: str | None = None,
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generated_at: datetime | None = None,
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) -> ResourceAccountingResult:
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snapshot = _parse_json(task.engine_snapshot_json)
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return await record_generated_resource(
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db,
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user_id=task.user_id,
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resource_type=task.gen_type,
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resource_url=resource_url,
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remote_url=remote_url or task.remote_result_url,
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storage_type="local" if storage_path else "remote",
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storage_path=storage_path,
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file_size_bytes=file_size_bytes,
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source_model=SOURCE_MODEL_CHAT_TASK,
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source_model_module="app.models.chat_generation_task",
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source_id=task.id,
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engine_id=task.engine_id,
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engine_type=snapshot.get("engine_type") or task.gen_type,
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provider=snapshot.get("provider"),
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model_name=snapshot.get("model_name"),
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generated_at=generated_at or task.generated_at or datetime.now(timezone.utc),
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extra={"pipeline_stage": task.pipeline_stage},
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)
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async def record_generation_record_generated_resource(
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db: AsyncSession,
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record: GenerationRecord,
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*,
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resource_url: str,
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storage_path: str | None = None,
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file_size_bytes: int | None = None,
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remote_url: str | None = None,
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generated_at: datetime | None = None,
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) -> ResourceAccountingResult:
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return await record_generated_resource(
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db,
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user_id=record.user_id,
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resource_type=record.gen_type,
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resource_url=resource_url,
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remote_url=remote_url,
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storage_type="local" if storage_path else "remote",
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storage_path=storage_path,
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file_size_bytes=file_size_bytes,
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source_model=SOURCE_MODEL_GENERATION_RECORD,
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source_model_module="app.models.generation_record",
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source_id=record.id,
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generated_at=generated_at or record.generated_at or datetime.now(timezone.utc),
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extra={"project_id": record.project_id},
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)
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async def batch_get_generated_resource_id_map(
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db: AsyncSession,
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*,
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source_model: str,
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source_ids: Sequence[str] | Iterable[str],
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resource_type: str | None = None,
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) -> dict[str, str]:
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"""批量查询来源记录对应的 GeneratedResource.id。
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用于历史列表接口批量回填资源账本 ID，避免按记录一条条查询。
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如果历史脏数据存在同一个 source_id 对应多条未软删资源账本，按 created_at 倒序取最新一条。
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"""
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ids = list(dict.fromkeys(str(item) for item in source_ids if item))
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if not ids:
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return {}
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normalized_resource_type = (resource_type or "").lower().strip()
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query = select(GeneratedResource).where(
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GeneratedResource.source_model == source_model,
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GeneratedResource.source_id.in_(ids),
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GeneratedResource.deleted_at.is_(None),
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)
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if normalized_resource_type in ("image", "video"):
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query = query.where(GeneratedResource.resource_type == normalized_resource_type)
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result = await db.execute(
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query.order_by(
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GeneratedResource.source_id.asc(),
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GeneratedResource.created_at.desc(),
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)
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)
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resource_id_map: dict[str, str] = {}
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for resource in result.scalars().all():
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if resource.source_id not in resource_id_map:
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resource_id_map[resource.source_id] = resource.id
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return resource_id_map
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async def soft_delete_resources_by_source(
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db: AsyncSession,
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*,
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source_model: str,
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source_ids: Sequence[str] | Iterable[str],
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deleted_at: datetime | None = None,
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) -> int:
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"""按业务来源软删资源账本，并返回本次释放的 active 空间字节数。"""
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ids = [item for item in source_ids if item]
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if not ids:
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return 0
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deleted_at = deleted_at or datetime.now(timezone.utc)
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result = await db.execute(
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select(GeneratedResource).where(
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GeneratedResource.source_model == source_model,
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GeneratedResource.source_id.in_(ids),
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GeneratedResource.deleted_at.is_(None),
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)
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)
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resources = list(result.scalars().all())
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freed_size = 0
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for resource in resources:
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size = _int(resource.file_size_bytes)
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resource.deleted_at = deleted_at
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freed_size += size
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await apply_resource_stat_delta(
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db,
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user_id=resource.user_id,
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stat_month=resource.resource_month,
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resource_type=resource.resource_type,
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active_size_delta=-size,
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active_count_delta=-1,
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deleted_size_delta=size,
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deleted_count_delta=1,
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)
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return freed_size
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async def soft_delete_chat_task_resources(
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db: AsyncSession,
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task_id: str,
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*,
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deleted_at: datetime | None = None,
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) -> int:
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return await soft_delete_resources_by_source(
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db,
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source_model=SOURCE_MODEL_CHAT_TASK,
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source_ids=[task_id],
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deleted_at=deleted_at,
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)
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async def soft_delete_generation_record_resources(
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db: AsyncSession,
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record_ids: Sequence[str] | Iterable[str],
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*,
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deleted_at: datetime | None = None,
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) -> int:
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return await soft_delete_resources_by_source(
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db,
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source_model=SOURCE_MODEL_GENERATION_RECORD,
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source_ids=record_ids,
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deleted_at=deleted_at,
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)
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