mirror of
https://github.com/snailyp/gemini-balance.git
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c65d5244d6
本次提交主要更改了 `StatsService` 中对 `RequestLog.status_code` 的比较方式，将 `== None` 修改为 `is None`，以符合 Python 的最佳实践。这一修复旨在提高代码的可读性和准确性。
256 lines
10 KiB
Python
256 lines
10 KiB
Python
# app/service/stats_service.py
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import datetime
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from sqlalchemy import and_, case, func, or_, select
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from app.database.connection import database
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from app.database.models import RequestLog
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from app.log.logger import get_stats_logger
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logger = get_stats_logger()
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class StatsService:
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"""Service class for handling statistics related operations."""
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async def get_calls_in_last_seconds(self, seconds: int) -> dict[str, int]:
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"""获取过去 N 秒内的调用次数 (总数、成功、失败)"""
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try:
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cutoff_time = datetime.datetime.now() - datetime.timedelta(seconds=seconds)
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query = select(
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func.count(RequestLog.id).label("total"),
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func.sum(
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case(
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(
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and_(
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RequestLog.status_code >= 200,
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RequestLog.status_code < 300,
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),
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1,
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),
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else_=0,
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)
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).label("success"),
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func.sum(
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case(
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(
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or_(
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RequestLog.status_code < 200,
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RequestLog.status_code >= 300,
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),
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1,
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),
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(RequestLog.status_code is None, 1), # type: ignore
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else_=0,
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)
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).label("failure"),
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).where(RequestLog.request_time >= cutoff_time)
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result = await database.fetch_one(query)
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if result:
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return {
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"total": result["total"] or 0,
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"success": result["success"] or 0,
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"failure": result["failure"] or 0,
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}
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return {"total": 0, "success": 0, "failure": 0}
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except Exception as e:
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logger.error(f"Failed to get calls in last {seconds} seconds: {e}")
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return {"total": 0, "success": 0, "failure": 0}
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async def get_calls_in_last_minutes(self, minutes: int) -> dict[str, int]:
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"""获取过去 N 分钟内的调用次数 (总数、成功、失败)"""
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return await self.get_calls_in_last_seconds(minutes * 60)
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async def get_calls_in_last_hours(self, hours: int) -> dict[str, int]:
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"""获取过去 N 小时内的调用次数 (总数、成功、失败)"""
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return await self.get_calls_in_last_seconds(hours * 3600)
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async def get_calls_in_current_month(self) -> dict[str, int]:
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"""获取当前自然月内的调用次数 (总数、成功、失败)"""
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try:
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now = datetime.datetime.now()
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start_of_month = now.replace(
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day=1, hour=0, minute=0, second=0, microsecond=0
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)
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query = select(
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func.count(RequestLog.id).label("total"),
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func.sum(
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case(
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(
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and_(
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RequestLog.status_code >= 200,
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RequestLog.status_code < 300,
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),
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1,
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),
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else_=0,
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)
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).label("success"),
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func.sum(
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case(
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(
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or_(
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RequestLog.status_code < 200,
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RequestLog.status_code >= 300,
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),
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1,
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),
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(RequestLog.status_code is None, 1), # type: ignore
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else_=0,
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)
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).label("failure"),
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).where(RequestLog.request_time >= start_of_month)
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result = await database.fetch_one(query)
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if result:
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return {
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"total": result["total"] or 0,
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"success": result["success"] or 0,
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"failure": result["failure"] or 0,
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}
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return {"total": 0, "success": 0, "failure": 0}
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except Exception as e:
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logger.error(f"Failed to get calls in current month: {e}")
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return {"total": 0, "success": 0, "failure": 0}
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async def get_api_usage_stats(self) -> dict:
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"""获取所有需要的 API 使用统计数据 (总数、成功、失败)"""
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try:
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stats_1m = await self.get_calls_in_last_minutes(1)
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stats_1h = await self.get_calls_in_last_hours(1)
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stats_24h = await self.get_calls_in_last_hours(24)
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stats_month = await self.get_calls_in_current_month()
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return {
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"calls_1m": stats_1m,
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"calls_1h": stats_1h,
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"calls_24h": stats_24h,
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"calls_month": stats_month,
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}
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except Exception as e:
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logger.error(f"Failed to get API usage stats: {e}")
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default_stat = {"total": 0, "success": 0, "failure": 0}
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return {
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"calls_1m": default_stat.copy(),
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"calls_1h": default_stat.copy(),
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"calls_24h": default_stat.copy(),
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"calls_month": default_stat.copy(),
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}
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async def get_api_call_details(self, period: str) -> list[dict]:
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"""
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获取指定时间段内的 API 调用详情
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Args:
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period: 时间段标识 ('1m', '1h', '24h')
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Returns:
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包含调用详情的字典列表，每个字典包含 timestamp, key, model, status
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Raises:
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ValueError: 如果 period 无效
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"""
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now = datetime.datetime.now()
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if period == "1m":
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start_time = now - datetime.timedelta(minutes=1)
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elif period == "1h":
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start_time = now - datetime.timedelta(hours=1)
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elif period == "24h":
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start_time = now - datetime.timedelta(hours=24)
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else:
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raise ValueError(f"无效的时间段标识: {period}")
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try:
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query = (
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select(
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RequestLog.request_time.label("timestamp"),
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RequestLog.api_key.label("key"),
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RequestLog.model_name.label("model"),
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RequestLog.status_code, # We might need to map this to 'success'/'failure' later
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)
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.where(RequestLog.request_time >= start_time)
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.order_by(RequestLog.request_time.desc())
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) # Order by most recent first
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results = await database.fetch_all(query)
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# Convert results to list of dicts and map status_code
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details = []
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for row in results:
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status = "failure" # 默认状态为 failure，如果 status_code 有效且在 200-299 范围内则更新为 success
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if row["status_code"] is not None: # 检查 status_code 是否为空
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status = "success" if 200 <= row["status_code"] < 300 else "failure"
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details.append(
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{
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"timestamp": row[
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"timestamp"
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].isoformat(), # Use ISO format for JS compatibility
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"key": row["key"],
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"model": row["model"],
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"status": status,
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}
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)
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logger.info(
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f"Retrieved {len(details)} API call details for period '{period}'"
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)
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return details
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except Exception as e:
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logger.error(f"Failed to get API call details for period '{period}': {e}")
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# Re-raise the exception to be handled by the route
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raise
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async def get_key_usage_details_last_24h(self, key: str) -> dict | None:
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"""
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获取指定 API 密钥在过去 24 小时内按模型统计的调用次数。
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Args:
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key: 要查询的 API 密钥。
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Returns:
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一个字典，其中键是模型名称，值是调用次数。
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如果查询出错或没有找到记录，可能返回 None 或空字典。
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Example: {"gemini-pro": 10, "gemini-1.5-pro-latest": 5}
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"""
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logger.info(
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f"Fetching usage details for key ending in ...{key[-4:]} for the last 24h."
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)
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cutoff_time = datetime.datetime.now() - datetime.timedelta(hours=24)
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try:
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query = (
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select(
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RequestLog.model_name, func.count(RequestLog.id).label("call_count")
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)
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.where(
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RequestLog.api_key == key,
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RequestLog.request_time >= cutoff_time,
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RequestLog.model_name.isnot(None), # Ensure model_name is not null
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)
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.group_by(RequestLog.model_name)
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.order_by(func.count(RequestLog.id).desc()) # Order by count descending
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)
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results = await database.fetch_all(query)
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if not results:
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logger.info(
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f"No usage details found for key ending in ...{key[-4:]} in the last 24h."
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)
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return {} # Return empty dict if no records found
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usage_details = {row["model_name"]: row["call_count"] for row in results}
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logger.info(
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f"Successfully fetched usage details for key ending in ...{key[-4:]}: {usage_details}"
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)
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return usage_details
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except Exception as e:
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logger.error(
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f"Failed to get key usage details for key ending in ...{key[-4:]}: {e}",
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exc_info=True,
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)
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# Depending on requirements, you might return None or raise the exception
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# Raising allows the route handler to return a 500 error.
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raise # Re-raise the exception
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