重构现代化 FastAPI 后端项目框架
This commit is contained in:
647
app/infra/db/timescaledb/schemas/realtime.py
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647
app/infra/db/timescaledb/schemas/realtime.py
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from typing import List, Any, Dict
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from datetime import datetime, timedelta, timezone
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from collections import defaultdict
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from psycopg import AsyncConnection, Connection, sql
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# 定义UTC+8时区
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UTC_8 = timezone(timedelta(hours=8))
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class RealtimeRepository:
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# --- Link Simulation ---
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@staticmethod
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async def insert_links_batch(conn: AsyncConnection, data: List[dict]):
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"""Batch insert for realtime.link_simulation using DELETE then COPY for performance."""
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if not data:
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return
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# 假设同一批次的数据时间是相同的
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target_time = data[0]["time"]
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# 使用事务确保原子性
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async with conn.transaction():
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async with conn.cursor() as cur:
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# 1. 先删除该时间点的旧数据
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await cur.execute(
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"DELETE FROM realtime.link_simulation WHERE time = %s",
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(target_time,),
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)
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# 2. 使用 COPY 快速写入新数据
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async with cur.copy(
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"COPY realtime.link_simulation (time, id, flow, friction, headloss, quality, reaction, setting, status, velocity) FROM STDIN"
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) as copy:
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for item in data:
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await copy.write_row(
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(
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item["time"],
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item["id"],
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item.get("flow"),
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item.get("friction"),
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item.get("headloss"),
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item.get("quality"),
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item.get("reaction"),
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item.get("setting"),
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item.get("status"),
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item.get("velocity"),
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)
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)
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@staticmethod
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def insert_links_batch_sync(conn: Connection, data: List[dict]):
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"""Batch insert for realtime.link_simulation using DELETE then COPY for performance (sync version)."""
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if not data:
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return
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# 假设同一批次的数据时间是相同的
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target_time = data[0]["time"]
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# 使用事务确保原子性
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with conn.transaction():
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with conn.cursor() as cur:
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# 1. 先删除该时间点的旧数据
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cur.execute(
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"DELETE FROM realtime.link_simulation WHERE time = %s",
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(target_time,),
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)
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# 2. 使用 COPY 快速写入新数据
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with cur.copy(
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"COPY realtime.link_simulation (time, id, flow, friction, headloss, quality, reaction, setting, status, velocity) FROM STDIN"
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) as copy:
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for item in data:
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copy.write_row(
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(
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item["time"],
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item["id"],
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item.get("flow"),
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item.get("friction"),
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item.get("headloss"),
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item.get("quality"),
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item.get("reaction"),
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item.get("setting"),
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item.get("status"),
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item.get("velocity"),
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)
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)
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@staticmethod
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async def get_link_by_time_range(
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conn: AsyncConnection, start_time: datetime, end_time: datetime, link_id: str
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) -> List[dict]:
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async with conn.cursor() as cur:
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await cur.execute(
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"SELECT * FROM realtime.link_simulation WHERE time >= %s AND time <= %s AND id = %s",
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(start_time, end_time, link_id),
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)
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return await cur.fetchall()
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@staticmethod
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async def get_links_by_time_range(
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conn: AsyncConnection, start_time: datetime, end_time: datetime
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) -> List[dict]:
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async with conn.cursor() as cur:
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await cur.execute(
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"SELECT * FROM realtime.link_simulation WHERE time >= %s AND time <= %s",
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(start_time, end_time),
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)
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return await cur.fetchall()
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@staticmethod
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async def get_link_field_by_time_range(
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conn: AsyncConnection,
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start_time: datetime,
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end_time: datetime,
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link_id: str,
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field: str,
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) -> List[Dict[str, Any]]:
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# Validate field name to prevent SQL injection
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valid_fields = {
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"flow",
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"friction",
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"headloss",
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"quality",
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"reaction",
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"setting",
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"status",
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"velocity",
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}
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if field not in valid_fields:
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raise ValueError(f"Invalid field: {field}")
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query = sql.SQL(
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"SELECT time, {} FROM realtime.link_simulation WHERE time >= %s AND time <= %s AND id = %s"
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).format(sql.Identifier(field))
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async with conn.cursor() as cur:
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await cur.execute(query, (start_time, end_time, link_id))
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rows = await cur.fetchall()
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return [
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{"time": row["time"].isoformat(), "value": row[field]} for row in rows
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]
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@staticmethod
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async def get_links_field_by_time_range(
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conn: AsyncConnection,
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start_time: datetime,
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end_time: datetime,
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field: str,
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) -> dict:
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# Validate field name to prevent SQL injection
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valid_fields = {
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"flow",
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"friction",
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"headloss",
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"quality",
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"reaction",
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"setting",
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"status",
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"velocity",
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}
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if field not in valid_fields:
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raise ValueError(f"Invalid field: {field}")
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query = sql.SQL(
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"SELECT id, time, {} FROM realtime.link_simulation WHERE time >= %s AND time <= %s"
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).format(sql.Identifier(field))
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async with conn.cursor() as cur:
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await cur.execute(query, (start_time, end_time))
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rows = await cur.fetchall()
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result = defaultdict(list)
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for row in rows:
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result[row["id"]].append(
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{"time": row["time"].isoformat(), "value": row[field]}
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)
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return dict(result)
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@staticmethod
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async def update_link_field(
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conn: AsyncConnection,
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time: datetime,
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link_id: str,
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field: str,
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value: Any,
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):
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valid_fields = {
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"flow",
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"friction",
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"headloss",
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"quality",
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"reaction",
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"setting",
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"status",
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"velocity",
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}
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if field not in valid_fields:
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raise ValueError(f"Invalid field: {field}")
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query = sql.SQL(
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"UPDATE realtime.link_simulation SET {} = %s WHERE time = %s AND id = %s"
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).format(sql.Identifier(field))
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async with conn.cursor() as cur:
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await cur.execute(query, (value, time, link_id))
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@staticmethod
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async def delete_links_by_time_range(
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conn: AsyncConnection, start_time: datetime, end_time: datetime
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):
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async with conn.cursor() as cur:
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await cur.execute(
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"DELETE FROM realtime.link_simulation WHERE time >= %s AND time <= %s",
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(start_time, end_time),
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)
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# --- Node Simulation ---
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@staticmethod
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async def insert_nodes_batch(conn: AsyncConnection, data: List[dict]):
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if not data:
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return
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# 假设同一批次的数据时间是相同的
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target_time = data[0]["time"]
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# 使用事务确保原子性
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async with conn.transaction():
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async with conn.cursor() as cur:
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# 1. 先删除该时间点的旧数据
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await cur.execute(
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"DELETE FROM realtime.node_simulation WHERE time = %s",
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(target_time,),
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)
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# 2. 使用 COPY 快速写入新数据
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async with cur.copy(
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"COPY realtime.node_simulation (time, id, actual_demand, total_head, pressure, quality) FROM STDIN"
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) as copy:
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for item in data:
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await copy.write_row(
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(
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item["time"],
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item["id"],
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item.get("actual_demand"),
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item.get("total_head"),
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item.get("pressure"),
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item.get("quality"),
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)
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)
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@staticmethod
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def insert_nodes_batch_sync(conn: Connection, data: List[dict]):
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if not data:
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return
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# 假设同一批次的数据时间是相同的
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target_time = data[0]["time"]
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# 使用事务确保原子性
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with conn.transaction():
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with conn.cursor() as cur:
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# 1. 先删除该时间点的旧数据
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cur.execute(
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"DELETE FROM realtime.node_simulation WHERE time = %s",
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(target_time,),
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)
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# 2. 使用 COPY 快速写入新数据
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with cur.copy(
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"COPY realtime.node_simulation (time, id, actual_demand, total_head, pressure, quality) FROM STDIN"
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) as copy:
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for item in data:
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copy.write_row(
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(
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item["time"],
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item["id"],
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item.get("actual_demand"),
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item.get("total_head"),
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item.get("pressure"),
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item.get("quality"),
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)
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)
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@staticmethod
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async def get_node_by_time_range(
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conn: AsyncConnection, start_time: datetime, end_time: datetime, node_id: str
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) -> List[dict]:
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async with conn.cursor() as cur:
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await cur.execute(
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"SELECT * FROM realtime.node_simulation WHERE time >= %s AND time <= %s AND id = %s",
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(start_time, end_time, node_id),
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)
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return await cur.fetchall()
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@staticmethod
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async def get_nodes_by_time_range(
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conn: AsyncConnection, start_time: datetime, end_time: datetime
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) -> List[dict]:
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async with conn.cursor() as cur:
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await cur.execute(
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"SELECT * FROM realtime.node_simulation WHERE time >= %s AND time <= %s",
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(start_time, end_time),
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)
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return await cur.fetchall()
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@staticmethod
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async def get_node_field_by_time_range(
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conn: AsyncConnection,
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start_time: datetime,
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end_time: datetime,
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node_id: str,
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field: str,
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) -> List[Dict[str, Any]]:
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valid_fields = {"actual_demand", "total_head", "pressure", "quality"}
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if field not in valid_fields:
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raise ValueError(f"Invalid field: {field}")
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query = sql.SQL(
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"SELECT time, {} FROM realtime.node_simulation WHERE time >= %s AND time <= %s AND id = %s"
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).format(sql.Identifier(field))
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async with conn.cursor() as cur:
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await cur.execute(query, (start_time, end_time, node_id))
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rows = await cur.fetchall()
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return [
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{"time": row["time"].isoformat(), "value": row[field]} for row in rows
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]
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@staticmethod
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async def get_nodes_field_by_time_range(
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conn: AsyncConnection, start_time: datetime, end_time: datetime, field: str
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) -> dict:
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valid_fields = {"actual_demand", "total_head", "pressure", "quality"}
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if field not in valid_fields:
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raise ValueError(f"Invalid field: {field}")
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query = sql.SQL(
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"SELECT id, time, {} FROM realtime.node_simulation WHERE time >= %s AND time <= %s"
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).format(sql.Identifier(field))
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async with conn.cursor() as cur:
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await cur.execute(query, (start_time, end_time))
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rows = await cur.fetchall()
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result = defaultdict(list)
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for row in rows:
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result[row["id"]].append(
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{"time": row["time"].isoformat(), "value": row[field]}
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)
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return dict(result)
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@staticmethod
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async def update_node_field(
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conn: AsyncConnection,
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time: datetime,
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node_id: str,
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field: str,
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value: Any,
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):
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valid_fields = {"actual_demand", "total_head", "pressure", "quality"}
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if field not in valid_fields:
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raise ValueError(f"Invalid field: {field}")
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query = sql.SQL(
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"UPDATE realtime.node_simulation SET {} = %s WHERE time = %s AND id = %s"
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).format(sql.Identifier(field))
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async with conn.cursor() as cur:
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await cur.execute(query, (value, time, node_id))
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@staticmethod
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async def delete_nodes_by_time_range(
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conn: AsyncConnection, start_time: datetime, end_time: datetime
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):
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async with conn.cursor() as cur:
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await cur.execute(
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"DELETE FROM realtime.node_simulation WHERE time >= %s AND time <= %s",
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(start_time, end_time),
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)
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# --- 复合查询 ---
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@staticmethod
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async def store_realtime_simulation_result(
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conn: AsyncConnection,
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node_result_list: List[Dict[str, any]],
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link_result_list: List[Dict[str, any]],
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result_start_time: str,
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):
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"""
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Store realtime simulation results to TimescaleDB.
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Args:
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conn: Database connection
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node_result_list: List of node simulation results
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link_result_list: List of link simulation results
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result_start_time: Start time for the results (ISO format string)
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"""
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# Convert result_start_time string to datetime if needed
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if isinstance(result_start_time, str):
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# 如果是ISO格式字符串，解析并转换为UTC+8
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if result_start_time.endswith("Z"):
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# UTC时间，转换为UTC+8
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utc_time = datetime.fromisoformat(
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result_start_time.replace("Z", "+00:00")
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)
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simulation_time = utc_time.astimezone(UTC_8)
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else:
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# 假设已经是UTC+8时间
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simulation_time = datetime.fromisoformat(result_start_time)
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if simulation_time.tzinfo is None:
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simulation_time = simulation_time.replace(tzinfo=UTC_8)
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else:
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simulation_time = result_start_time
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if simulation_time.tzinfo is None:
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simulation_time = simulation_time.replace(tzinfo=UTC_8)
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# Prepare node data for batch insert
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node_data = []
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for node_result in node_result_list:
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node_id = node_result.get("node")
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data = node_result.get("result", [])[0] # 实时模拟只有一个周期
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node_data.append(
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{
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"time": simulation_time,
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"id": node_id,
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"actual_demand": data.get("demand"),
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"total_head": data.get("head"),
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"pressure": data.get("pressure"),
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"quality": data.get("quality"),
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}
|
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)
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# Prepare link data for batch insert
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link_data = []
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for link_result in link_result_list:
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link_id = link_result.get("link")
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data = link_result.get("result", [])[0]
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link_data.append(
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{
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"time": simulation_time,
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"id": link_id,
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"flow": data.get("flow"),
|
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"friction": data.get("friction"),
|
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"headloss": data.get("headloss"),
|
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"quality": data.get("quality"),
|
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"reaction": data.get("reaction"),
|
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"setting": data.get("setting"),
|
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"status": data.get("status"),
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"velocity": data.get("velocity"),
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}
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)
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# Insert data using batch methods
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if node_data:
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await RealtimeRepository.insert_nodes_batch(conn, node_data)
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if link_data:
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await RealtimeRepository.insert_links_batch(conn, link_data)
|
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|
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@staticmethod
|
||||
def store_realtime_simulation_result_sync(
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conn: Connection,
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node_result_list: List[Dict[str, any]],
|
||||
link_result_list: List[Dict[str, any]],
|
||||
result_start_time: str,
|
||||
):
|
||||
"""
|
||||
Store realtime simulation results to TimescaleDB (sync version).
|
||||
|
||||
Args:
|
||||
conn: Database connection
|
||||
node_result_list: List of node simulation results
|
||||
link_result_list: List of link simulation results
|
||||
result_start_time: Start time for the results (ISO format string)
|
||||
"""
|
||||
# Convert result_start_time string to datetime if needed
|
||||
if isinstance(result_start_time, str):
|
||||
# 如果是ISO格式字符串，解析并转换为UTC+8
|
||||
if result_start_time.endswith("Z"):
|
||||
# UTC时间，转换为UTC+8
|
||||
utc_time = datetime.fromisoformat(
|
||||
result_start_time.replace("Z", "+00:00")
|
||||
)
|
||||
simulation_time = utc_time.astimezone(UTC_8)
|
||||
else:
|
||||
# 假设已经是UTC+8时间
|
||||
simulation_time = datetime.fromisoformat(result_start_time)
|
||||
if simulation_time.tzinfo is None:
|
||||
simulation_time = simulation_time.replace(tzinfo=UTC_8)
|
||||
else:
|
||||
simulation_time = result_start_time
|
||||
if simulation_time.tzinfo is None:
|
||||
simulation_time = simulation_time.replace(tzinfo=UTC_8)
|
||||
|
||||
# Prepare node data for batch insert
|
||||
node_data = []
|
||||
for node_result in node_result_list:
|
||||
node_id = node_result.get("node")
|
||||
data = node_result.get("result", [])[0] # 实时模拟只有一个周期
|
||||
node_data.append(
|
||||
{
|
||||
"time": simulation_time,
|
||||
"id": node_id,
|
||||
"actual_demand": data.get("demand"),
|
||||
"total_head": data.get("head"),
|
||||
"pressure": data.get("pressure"),
|
||||
"quality": data.get("quality"),
|
||||
}
|
||||
)
|
||||
|
||||
# Prepare link data for batch insert
|
||||
link_data = []
|
||||
for link_result in link_result_list:
|
||||
link_id = link_result.get("link")
|
||||
data = link_result.get("result", [])[0]
|
||||
link_data.append(
|
||||
{
|
||||
"time": simulation_time,
|
||||
"id": link_id,
|
||||
"flow": data.get("flow"),
|
||||
"friction": data.get("friction"),
|
||||
"headloss": data.get("headloss"),
|
||||
"quality": data.get("quality"),
|
||||
"reaction": data.get("reaction"),
|
||||
"setting": data.get("setting"),
|
||||
"status": data.get("status"),
|
||||
"velocity": data.get("velocity"),
|
||||
}
|
||||
)
|
||||
|
||||
# Insert data using batch methods
|
||||
if node_data:
|
||||
RealtimeRepository.insert_nodes_batch_sync(conn, node_data)
|
||||
|
||||
if link_data:
|
||||
RealtimeRepository.insert_links_batch_sync(conn, link_data)
|
||||
|
||||
@staticmethod
|
||||
async def query_all_record_by_time_property(
|
||||
conn: AsyncConnection,
|
||||
query_time: str,
|
||||
type: str,
|
||||
property: str,
|
||||
) -> list:
|
||||
"""
|
||||
Query all records by time and property from TimescaleDB.
|
||||
|
||||
Args:
|
||||
conn: Database connection
|
||||
query_time: Time to query (ISO format string)
|
||||
type: Type of data ("node" or "link")
|
||||
property: Property/field to query
|
||||
|
||||
Returns:
|
||||
List of records matching the criteria
|
||||
"""
|
||||
# Convert query_time string to datetime
|
||||
if isinstance(query_time, str):
|
||||
if query_time.endswith("Z"):
|
||||
# UTC时间，转换为UTC+8
|
||||
utc_time = datetime.fromisoformat(query_time.replace("Z", "+00:00"))
|
||||
target_time = utc_time.astimezone(UTC_8)
|
||||
else:
|
||||
# 假设已经是UTC+8时间
|
||||
target_time = datetime.fromisoformat(query_time)
|
||||
if target_time.tzinfo is None:
|
||||
target_time = target_time.replace(tzinfo=UTC_8)
|
||||
else:
|
||||
target_time = query_time
|
||||
if target_time.tzinfo is None:
|
||||
target_time = target_time.replace(tzinfo=UTC_8)
|
||||
|
||||
# Create time range: query_time ± 1 second
|
||||
start_time = target_time - timedelta(seconds=1)
|
||||
end_time = target_time + timedelta(seconds=1)
|
||||
|
||||
# Query based on type
|
||||
if type.lower() == "node":
|
||||
data = await RealtimeRepository.get_nodes_field_by_time_range(
|
||||
conn, start_time, end_time, property
|
||||
)
|
||||
elif type.lower() == "link":
|
||||
data = await RealtimeRepository.get_links_field_by_time_range(
|
||||
conn, start_time, end_time, property
|
||||
)
|
||||
else:
|
||||
raise ValueError(f"Invalid type: {type}. Must be 'node' or 'link'")
|
||||
|
||||
# Format the results
|
||||
result = []
|
||||
for id, items in data.items():
|
||||
for item in items:
|
||||
result.append({"ID": id, "value": item["value"]})
|
||||
return result
|
||||
|
||||
@staticmethod
|
||||
async def query_simulation_result_by_id_time(
|
||||
conn: AsyncConnection,
|
||||
id: str,
|
||||
type: str,
|
||||
query_time: str,
|
||||
) -> list[dict]:
|
||||
"""
|
||||
Query simulation results by id and time from TimescaleDB.
|
||||
|
||||
Args:
|
||||
conn: Database connection
|
||||
id: The id of the node or link
|
||||
type: Type of data ("node" or "link")
|
||||
query_time: Time to query (ISO format string)
|
||||
|
||||
Returns:
|
||||
List of records matching the criteria
|
||||
"""
|
||||
# Convert query_time string to datetime
|
||||
if isinstance(query_time, str):
|
||||
if query_time.endswith("Z"):
|
||||
# UTC时间，转换为UTC+8
|
||||
utc_time = datetime.fromisoformat(query_time.replace("Z", "+00:00"))
|
||||
target_time = utc_time.astimezone(UTC_8)
|
||||
else:
|
||||
# 假设已经是UTC+8时间
|
||||
target_time = datetime.fromisoformat(query_time)
|
||||
if target_time.tzinfo is None:
|
||||
target_time = target_time.replace(tzinfo=UTC_8)
|
||||
else:
|
||||
target_time = query_time
|
||||
if target_time.tzinfo is None:
|
||||
target_time = target_time.replace(tzinfo=UTC_8)
|
||||
|
||||
# Create time range: query_time ± 1 second
|
||||
start_time = target_time - timedelta(seconds=1)
|
||||
end_time = target_time + timedelta(seconds=1)
|
||||
|
||||
# Query based on type
|
||||
if type.lower() == "node":
|
||||
return await RealtimeRepository.get_node_by_time_range(
|
||||
conn, start_time, end_time, id
|
||||
)
|
||||
elif type.lower() == "link":
|
||||
return await RealtimeRepository.get_link_by_time_range(
|
||||
conn, start_time, end_time, id
|
||||
)
|
||||
else:
|
||||
raise ValueError(f"Invalid type: {type}. Must be 'node' or 'link'")
|
||||
Reference in New Issue
Block a user