254 lines
8.5 KiB
Python
254 lines
8.5 KiB
Python
from __future__ import annotations
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import json
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from typing import Any, Mapping
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.config import settings
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from app.enums.credit_record import (
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CreditRecordAction,
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CreditRecordChargeKind,
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CreditRecordOwnerType,
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CreditRecordSourceModule,
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)
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from app.models.chat_generation_task import ChatGenerationTask
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from app.models.credit_record import CreditRecord
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from app.models.generation_record import GenerationRecord
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from app.models.token_usage import TokenUsage
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from app.utils.id_gen import generate_id
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def _safe_int(value: Any, default: int = 0) -> int:
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try:
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if value is None or value == "":
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return default
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return int(value)
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except Exception:
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return default
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def _safe_json_dict(value: Any) -> dict[str, Any]:
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if not value:
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return {}
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if isinstance(value, dict):
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return value
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try:
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parsed = json.loads(value)
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return parsed if isinstance(parsed, dict) else {}
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except Exception:
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return {}
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def _extract_usage(provider_response: Any) -> dict[str, Any]:
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data = _safe_json_dict(provider_response)
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usage = data.get("usage")
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return usage if isinstance(usage, dict) else {}
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def _normalize_media_tokens(
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*,
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gen_type: str | None,
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provider_response: Any = None,
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fallback_total: int | None = None,
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) -> tuple[int, int, int]:
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usage = _extract_usage(provider_response)
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input_tokens = _safe_int(usage.get("input_tokens"), 0)
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output_tokens = _safe_int(
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usage.get("output_tokens"),
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_safe_int(usage.get("generated_tokens"), 0),
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)
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total_tokens = _safe_int(usage.get("total_tokens"), 0)
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if total_tokens <= 0:
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total_tokens = _safe_int(fallback_total, 0)
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if output_tokens <= 0:
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output_tokens = max(0, total_tokens - input_tokens)
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if total_tokens <= 0:
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total_tokens = input_tokens + output_tokens
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# 图片生成多数供应商只返回 output/total，没有 input；保持 input=0。视频同理兼容缺字段。
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return input_tokens, output_tokens, total_tokens
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def _engine_model_from_provider_response(provider_response: Any) -> str | None:
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data = _safe_json_dict(provider_response)
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model = data.get("model")
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return str(model) if model else None
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async def _find_latest_media_charge(
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db: AsyncSession,
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*,
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user_id: str,
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owner_type: str,
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owner_id: str,
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media_type: str | None,
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) -> CreditRecord | None:
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query = (
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select(CreditRecord)
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.where(CreditRecord.user_id == user_id)
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.where(CreditRecord.type == "consume")
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.where(CreditRecord.owner_type == owner_type)
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.where(CreditRecord.owner_id == owner_id)
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.where(CreditRecord.charge_kind == CreditRecordChargeKind.MEDIA.value)
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.where(CreditRecord.charge_action == CreditRecordAction.CHARGE.value)
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)
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if media_type:
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query = query.where(CreditRecord.media_type == media_type)
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query = query.order_by(CreditRecord.attempt_no.desc().nullslast(), CreditRecord.created_at.desc()).limit(1)
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result = await db.execute(query)
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return result.scalar_one_or_none()
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async def _get_or_create_token_usage(
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db: AsyncSession,
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*,
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charge: CreditRecord,
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input_tokens: int,
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output_tokens: int,
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total_tokens: int,
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model_config_id: str | None = None,
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) -> TokenUsage:
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token_usage: TokenUsage | None = None
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if charge.token_usage_id:
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result = await db.execute(select(TokenUsage).where(TokenUsage.id == charge.token_usage_id).limit(1))
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token_usage = result.scalar_one_or_none()
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if token_usage is None and charge.biz_key:
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result = await db.execute(select(TokenUsage).where(TokenUsage.biz_key == charge.biz_key).limit(1))
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token_usage = result.scalar_one_or_none()
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if token_usage is None:
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token_usage = TokenUsage(
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id=generate_id(),
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user_id=charge.user_id,
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model_config_id=model_config_id,
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owner_type=charge.owner_type,
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owner_id=charge.owner_id,
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biz_key=charge.biz_key,
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source_module=charge.source_module,
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source_step_code=charge.source_step_code,
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input_tokens=input_tokens,
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output_tokens=output_tokens,
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total_tokens=total_tokens,
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)
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db.add(token_usage)
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await db.flush()
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else:
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token_usage.user_id = token_usage.user_id or charge.user_id
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token_usage.model_config_id = token_usage.model_config_id or model_config_id
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token_usage.owner_type = token_usage.owner_type or charge.owner_type
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token_usage.owner_id = token_usage.owner_id or charge.owner_id
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token_usage.biz_key = token_usage.biz_key or charge.biz_key
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token_usage.source_module = token_usage.source_module or charge.source_module
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token_usage.source_step_code = token_usage.source_step_code or charge.source_step_code
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token_usage.input_tokens = input_tokens
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token_usage.output_tokens = output_tokens
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token_usage.total_tokens = total_tokens
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return token_usage
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async def _sync_charge_snapshot(
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db: AsyncSession,
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*,
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charge: CreditRecord | None,
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gen_type: str | None,
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provider_response: Any = None,
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fallback_total: int | None = None,
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) -> CreditRecord | None:
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if not charge:
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return None
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input_tokens, output_tokens, total_tokens = _normalize_media_tokens(
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gen_type=gen_type,
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provider_response=provider_response,
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fallback_total=fallback_total,
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)
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if total_tokens <= 0:
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return charge
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token_usage = await _get_or_create_token_usage(
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db,
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charge=charge,
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input_tokens=input_tokens,
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output_tokens=output_tokens,
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total_tokens=total_tokens,
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model_config_id=None,
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)
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charge.token_usage_id = token_usage.id
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charge.input_tokens = input_tokens
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charge.output_tokens = output_tokens
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charge.total_tokens = total_tokens
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# 兼容旧流水扣费时未冷备 engine_model_name 的场景，能从 provider response 推出来就补充。
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provider_model = _engine_model_from_provider_response(provider_response)
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if provider_model and not charge.engine_model_name:
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charge.engine_model_name = provider_model
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return charge
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async def sync_chat_generation_task_media_token_snapshot(
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db: AsyncSession,
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task: ChatGenerationTask,
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*,
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provider_response: Any = None,
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) -> CreditRecord | None:
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"""把 ChatGenerationTask 图片/视频媒体生成 token 后置快照回填到积分流水。
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媒体扣费发生在创建任务前，供应商 usage 只能在创建/轮询成功后拿到，
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所以这里按 owner_type + owner_id + media_type 找到对应 media charge 流水并回填。
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"""
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if not bool(getattr(settings, "MEDIA_TOKEN_SNAPSHOT_ENABLED", True)):
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return None
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if not task:
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return None
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gen_type = (getattr(task, "gen_type", None) or "").lower().strip()
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fallback_total = task.image_tokens_used if gen_type == "image" else task.video_tokens_used
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response = provider_response if provider_response is not None else getattr(task, "provider_response_json", None)
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charge = await _find_latest_media_charge(
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db,
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user_id=task.user_id,
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owner_type=CreditRecordOwnerType.CHAT_GENERATION_TASK.value,
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owner_id=task.id,
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media_type=gen_type or None,
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)
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return await _sync_charge_snapshot(
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db,
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charge=charge,
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gen_type=gen_type,
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provider_response=response,
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fallback_total=fallback_total,
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)
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async def sync_generation_record_media_token_snapshot(
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db: AsyncSession,
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record: GenerationRecord,
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*,
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provider_response: Any = None,
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) -> CreditRecord | None:
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"""把旧 GenerationRecord 图片/视频媒体生成 token 后置快照回填到积分流水。"""
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if not bool(getattr(settings, "MEDIA_TOKEN_SNAPSHOT_ENABLED", True)):
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return None
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if not record:
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return None
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gen_type = (getattr(record, "gen_type", None) or "").lower().strip()
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fallback_total = record.image_tokens_used if gen_type == "image" else record.video_tokens_used
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charge = await _find_latest_media_charge(
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db,
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user_id=record.user_id,
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owner_type=CreditRecordOwnerType.GENERATION_RECORD.value,
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owner_id=record.id,
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media_type=gen_type or None,
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)
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return await _sync_charge_snapshot(
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db,
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charge=charge,
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gen_type=gen_type,
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provider_response=provider_response,
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fallback_total=fallback_total,
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)
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