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Aether/_deprecated_py_src/services/billing/token_normalization.py
fawney19 1d9c77522a refactor: 移除 Python 后端源码,全面迁移至 Rust gateway 架构
- 删除全部 Python 源码 (src/) 及 Alembic 迁移脚本,归档至 _deprecated_py_src/
- 重构 Rust gateway ai_pipeline: 拆分 planner/finalize 模块,新增 contracts/adaptation 层
- 重组 handlers 模块为 admin/public/proxy/internal/shared 子模块结构
- 新增 executor 模块,引入 Rust 原生数据库迁移 (aether-data/migrations)
- 简化 CI/Docker 构建流程,移除 base image 二级构建,统一为单一 app image
- 移除 Python 相关基础设施文件 (entrypoint.sh, gunicorn_conf.py, Dockerfile.base)
2026-04-03 16:26:16 +08:00

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"""
计费相关 token 归一化工具。
"""
from __future__ import annotations
from src.core.api_format.enums import ApiFamily
from src.core.api_format.signature import parse_signature_key
def _get_api_family(api_format: str | None) -> ApiFamily | None:
"""解析 api_format 字符串,返回对应的 ApiFamily 枚举。"""
if not api_format:
return None
text = str(api_format).strip()
if not text:
return None
sig = parse_signature_key(text)
return sig.api_family
def normalize_input_tokens_for_billing(
api_format: str | None,
input_tokens: int,
cache_read_tokens: int,
) -> int:
"""
归一化 `input_tokens`,使其在计费中表示"非缓存输入 token"
计费口径:`input_tokens`=非缓存输入 token`cache_read_tokens`=缓存命中 token折扣/免费维度)。
- Claude 系:保持上游口径(不扣除),因为 Claude API 的 input_tokens 本身就不包含缓存部分。
- OpenAI 系:`input_tokens` 包含缓存命中部分,需要扣除 `cache_read_tokens`。
- Gemini 系:`promptTokenCount` 包含 `cachedContentTokenCount`,需要扣除。
"""
if input_tokens <= 0:
return 0 if input_tokens == 0 else input_tokens
if cache_read_tokens <= 0:
return input_tokens
api_family = _get_api_family(api_format)
if api_family == ApiFamily.CLAUDE:
return input_tokens
if api_family in (ApiFamily.OPENAI, ApiFamily.GEMINI):
return max(input_tokens - cache_read_tokens, 0)
# 未知格式,保守处理,不扣除
return input_tokens