258 lines
9.7 KiB
Python
258 lines
9.7 KiB
Python
"""Sběr telemetrie z Modbus (Deye) a placeholder záznamy pro EV / TČ."""
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from __future__ import annotations
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import asyncio
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import logging
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from datetime import datetime, timezone
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import asyncpg
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from app.ws_manager import manager
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from services.modbus_client import get_modbus_client
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logger = logging.getLogger(__name__)
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# Deye SUN – holding registry (decimal adresa = přímo pro read_holding_registers)
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DEYE_REG_RUN_STATE = 500
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DEYE_REG_BATT_CHARGE_TODAY = 514
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DEYE_REG_BATT_DISCHARGE_TODAY = 515
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DEYE_REG_BATTERY_SOC = 588
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DEYE_REG_BATTERY_POWER_FLOW = 590
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DEYE_REG_GRID_TOTAL_POWER = 625
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DEYE_REG_GEN_PORT_POWER = 667
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DEYE_REG_LOAD_TOTAL_POWER = 653
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DEYE_REG_GRID_IMPORT_TOTAL_LO = 522
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DEYE_REG_GRID_IMPORT_TOTAL_HI = 523
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DEYE_REG_GRID_EXPORT_TOTAL_LO = 524
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DEYE_REG_GRID_EXPORT_TOTAL_HI = 525
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DEYE_REG_PV1_POWER = 672
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DEYE_REG_PV2_POWER = 673
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# Solar sell (0 = přebytek řiditelné FVE nesmí do sítě) a GEN/MI cut-off (bits0–1 == 3 → cut-off ON); viz modbus-registers.md
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DEYE_REG_SOLAR_SELL = 145
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DEYE_REG_CONTROL_BOARD_SPECIAL1 = 179
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def aggregate_pv_production_w(pv1_w: int, pv2_w: int, gen_port_w: int) -> int:
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"""
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Okamžitá „výroba FVE“ pro dashboard / audit součtu: Deye registry 672/673/667
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jsou int16 W; záporné hodnoty (např. večer při exportu) nejsou DC výroba.
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"""
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return max(0, int(pv1_w)) + max(0, int(pv2_w)) + max(0, int(gen_port_w))
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def _export_limit_flags_from_deye_regs(reg145: int | None, reg179: int | None) -> tuple[bool | None, int | None]:
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"""Odvoď is_export_limited / pv_derating_flags z přečtených holding registrů (NULL = neznámé)."""
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if reg145 is None and reg179 is None:
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return None, None
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flags = 0
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if reg145 is not None and int(reg145) == 0:
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flags |= 1
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if reg179 is not None and (int(reg179) & 3) == 3:
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flags |= 2
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return (flags != 0), flags
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async def poll_inverter(site_id: int, db: asyncpg.Connection) -> None:
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rows = await db.fetch(
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"""
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select inverter_id as id, code, host, port, unit_id
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from ems.vw_asset_inverter_modbus_poll
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where site_id = $1
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""",
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site_id,
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)
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measured_at = datetime.now(timezone.utc)
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for row in rows:
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inv_id = row["id"]
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code = row["code"]
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host = row["host"]
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port = int(row["port"] or 502)
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unit_id = int(row["unit_id"] if row["unit_id"] is not None else 1)
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try:
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client = await get_modbus_client(host, port)
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async with client.batch(unit_id) as mb:
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run_state = await mb.read_register(DEYE_REG_RUN_STATE)
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battery_soc = await mb.read_register(DEYE_REG_BATTERY_SOC)
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battery_power = await mb.read_register_signed(DEYE_REG_BATTERY_POWER_FLOW)
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batt_charge_today = await mb.read_register(DEYE_REG_BATT_CHARGE_TODAY)
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batt_discharge_today = await mb.read_register(DEYE_REG_BATT_DISCHARGE_TODAY)
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grid_power = await mb.read_register_signed(DEYE_REG_GRID_TOTAL_POWER)
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load_power = await mb.read_register_signed(DEYE_REG_LOAD_TOTAL_POWER)
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pv1_power = await mb.read_register_signed(DEYE_REG_PV1_POWER)
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pv2_power = await mb.read_register_signed(DEYE_REG_PV2_POWER)
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gen_port_power = await mb.read_register_signed(DEYE_REG_GEN_PORT_POWER)
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grid_energy_regs = await mb.read_holding_registers(
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DEYE_REG_GRID_IMPORT_TOTAL_LO, 4
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)
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reg145 = await mb.read_register(DEYE_REG_SOLAR_SELL)
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reg179 = await mb.read_register(DEYE_REG_CONTROL_BOARD_SPECIAL1)
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pv_power_w = aggregate_pv_production_w(pv1_power, pv2_power, gen_port_power)
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grid_import_total_wh = (grid_energy_regs[1] << 16 | grid_energy_regs[0]) * 100
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grid_export_total_wh = (grid_energy_regs[3] << 16 | grid_energy_regs[2]) * 100
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is_export_limited, pv_derating_flags = _export_limit_flags_from_deye_regs(reg145, reg179)
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logger.debug("inverter:%s Deye run_state raw=%s", code, run_state)
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await db.execute(
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"select ems.fn_telemetry_inverter_sample($1::int, $2::int, $3::timestamptz, $4::int, $5::int, $6::int, $7::int, $8::float8, $9::int, $10::int, $11::int, $12::int, $13::int, $14::bigint, $15::bigint, $16::int, $17::boolean, $18::int)",
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site_id,
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inv_id,
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measured_at,
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pv_power_w,
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pv1_power,
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pv2_power,
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gen_port_power,
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float(battery_soc),
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battery_power,
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batt_charge_today,
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batt_discharge_today,
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grid_power,
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load_power,
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grid_import_total_wh,
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grid_export_total_wh,
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run_state,
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is_export_limited,
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pv_derating_flags,
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)
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inv_temp: float | None = None
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await manager.broadcast_telemetry(
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{
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"type": "telemetry",
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"site_id": site_id,
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"ts": datetime.now(timezone.utc).isoformat(),
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"pv_power_w": pv_power_w,
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"battery_soc_pct": float(battery_soc),
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"battery_power_w": battery_power,
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"grid_power_w": grid_power,
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"load_power_w": load_power,
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"gen_port_power_w": gen_port_power,
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"inverter_temp_c": inv_temp,
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"is_export_limited": is_export_limited,
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"pv_derating_flags": pv_derating_flags,
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}
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)
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except Exception as e:
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logger.error("poll_inverter site=%s inverter=%s: %s", site_id, code, e)
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async def poll_ev_chargers(site_id: int, db: asyncpg.Connection) -> None:
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rows = await db.fetch(
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"""
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select charger_id as id, code, host, port, unit_id
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from ems.vw_asset_ev_charger_modbus_poll
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where site_id = $1
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""",
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site_id,
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)
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measured_at = datetime.now(timezone.utc)
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connector_id = 1
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for row in rows:
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code = row["code"]
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charger_id = row["id"]
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logger.info("TODO: EV charger Modbus registry pending | %s", code)
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current_status = "available"
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previous_status = await db.fetchval(
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"""
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select status
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from ems.telemetry_ev_charger
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where charger_id = $1 and connector_id = $2
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order by measured_at desc
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limit 1
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""",
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charger_id,
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connector_id,
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)
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await db.execute(
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"select ems.fn_telemetry_ev_charger_sample($1::int, $2::int, $3::timestamptz, $4::int, $5::text, $6::int, $7::float8)",
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site_id,
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charger_id,
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measured_at,
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connector_id,
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current_status,
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0,
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0.0,
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)
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if previous_status is not None:
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await db.fetchval(
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"select ems.fn_ev_session_transition($1::int, $2::int, $3::text, $4::text, $5::timestamptz)",
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site_id,
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charger_id,
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str(previous_status),
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current_status,
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measured_at,
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)
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if previous_status == "available" and current_status != "available":
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logger.info("EV arrival detected on charger %s", code)
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elif previous_status != "available" and current_status == "available":
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logger.info("EV departure detected on charger %s", code)
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async def poll_heat_pump(site_id: int, db: asyncpg.Connection) -> None:
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rows = await db.fetch(
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"""
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select heat_pump_id as id, code, host, port, unit_id
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from ems.vw_asset_heat_pump_modbus_poll
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where site_id = $1
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""",
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site_id,
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)
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measured_at = datetime.now(timezone.utc)
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for row in rows:
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code = row["code"]
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logger.info("TODO: heat pump Modbus registry pending (heat_pump=%s)", code)
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await db.execute(
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"select ems.fn_telemetry_heat_pump_sample($1::int, $2::int, $3::timestamptz, $4::int, $5::float8, $6::float8, $7::float8, $8::text)",
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site_id,
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row["id"],
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measured_at,
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0,
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10.0,
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45.0,
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55.0,
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"standby",
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)
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async def run_telemetry_loop(conn: asyncpg.Connection) -> float:
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"""Jeden průchod smyčky; vrátí uplynulý čas v sekundách (pro sleep).
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Poll probíhá sekvenčně — jedno asyncpg spojení nesmí obsluhovat paralelní dotazy.
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"""
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loop = asyncio.get_running_loop()
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start = loop.time()
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sites = await conn.fetch(
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"select id from ems.vw_site_directory where active = true"
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)
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for site in sites:
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sid = site["id"]
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try:
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await poll_inverter(sid, conn)
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await poll_ev_chargers(sid, conn)
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await poll_heat_pump(sid, conn)
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except Exception as e:
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logger.error("Telemetry loop error site %s: %s", sid, e)
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return loop.time() - start
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async def run_telemetry_loop_wrapper(pool: asyncpg.Pool) -> None:
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"""Background task: každá iterace získá spojení z poolu; neblokuje pool během sleep."""
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while True:
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try:
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async with pool.acquire() as conn:
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elapsed = await run_telemetry_loop(conn)
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except asyncio.CancelledError:
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raise
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except Exception as e:
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logger.exception("Telemetry wrapper DB error: %s", e)
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elapsed = 0.0
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await asyncio.sleep(5)
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continue
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if elapsed > 50:
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logger.warning("Telemetry loop took %.1fs (>50s)", elapsed)
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await asyncio.sleep(max(0.0, 60.0 - elapsed))
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