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backend/services/seed.py
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234
backend/services/seed.py
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"""
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Seed the database with default sensor registry and alarm threshold rules.
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Runs on startup if tables are empty — subsequent restarts are no-ops.
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"""
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import json
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import logging
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from sqlalchemy import text
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from sqlalchemy.ext.asyncio import AsyncSession
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logger = logging.getLogger(__name__)
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SITE_ID = "sg-01"
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# ── Threshold seed data ────────────────────────────────────────────────────────
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# (sensor_type, threshold_value, direction, severity, message_template, locked)
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# locked=True → state-machine encoding, hidden from UI
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# locked=False → numeric setpoint, user-editable
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THRESHOLD_SEED_DATA: list[tuple] = [
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# Rack environment
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("temperature", 28.0, "above", "warning", "Temperature elevated at {sensor_id}: {value:.1f}°C", False),
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("temperature", 32.0, "above", "critical", "Temperature critical at {sensor_id}: {value:.1f}°C", False),
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("humidity", 65.0, "above", "warning", "Humidity elevated at {sensor_id}: {value:.0f}%", False),
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# PDU / rack power
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("power_kw", 7.5, "above", "warning", "PDU load elevated at {sensor_id}: {value:.1f} kW", False),
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("power_kw", 9.5, "above", "critical", "PDU load critical at {sensor_id}: {value:.1f} kW", False),
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# UPS — numeric setpoints
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("ups_charge", 80.0, "below", "warning", "UPS battery low at {sensor_id}: {value:.0f}%", False),
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("ups_charge", 50.0, "below", "critical", "UPS battery critical at {sensor_id}: {value:.0f}%", False),
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("ups_load", 85.0, "above", "warning", "UPS load high at {sensor_id}: {value:.0f}%", False),
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("ups_load", 95.0, "above", "critical", "UPS load critical at {sensor_id}: {value:.0f}% — overload", False),
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("ups_runtime", 15.0, "below", "warning", "UPS runtime low at {sensor_id}: {value:.0f} min remaining", False),
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("ups_runtime", 5.0, "below", "critical", "UPS runtime critical at {sensor_id}: {value:.0f} min — imminent shutdown", False),
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# UPS — state transitions (locked)
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("ups_state", 0.5, "above", "critical", "UPS switched to battery at {sensor_id} — mains power lost", True),
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("ups_state", 1.5, "above", "critical", "UPS overloaded at {sensor_id} — immediate risk of failure", True),
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# Leak (locked — binary)
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("leak", 0.5, "above", "critical", "Water leak detected at {sensor_id}!", True),
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# CRAC capacity & efficiency
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("cooling_cap_pct", 90.0, "above", "warning", "CRAC near capacity limit at {sensor_id}: {value:.1f}%", False),
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("cooling_cop", 1.5, "below", "warning", "CRAC running inefficiently at {sensor_id}: COP {value:.2f}", False),
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# CRAC compressor
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("cooling_comp_load", 95.0, "above", "warning", "CRAC compressor overloaded at {sensor_id}: {value:.1f}%", False),
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("cooling_high_press", 22.0, "above", "critical", "CRAC high refrigerant pressure at {sensor_id}: {value:.1f} bar", False),
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("cooling_low_press", 3.0, "below", "critical", "CRAC low refrigerant pressure at {sensor_id}: {value:.1f} bar — possible leak", False),
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("cooling_superheat", 16.0, "above", "warning", "CRAC discharge superheat high at {sensor_id}: {value:.1f}°C", False),
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# CRAC filter
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("cooling_filter_dp", 80.0, "above", "warning", "CRAC filter requires attention at {sensor_id}: {value:.0f} Pa", False),
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("cooling_filter_dp", 120.0, "above", "critical", "CRAC filter critically blocked at {sensor_id}: {value:.0f} Pa — replace now", False),
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# CRAC return air
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("cooling_return", 36.0, "above", "warning", "CRAC return air temperature high at {sensor_id}: {value:.1f}°C", False),
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("cooling_return", 42.0, "above", "critical", "CRAC return air temperature critical at {sensor_id}: {value:.1f}°C", False),
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# Generator — numeric setpoints
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("gen_fuel_pct", 25.0, "below", "warning", "Generator fuel low at {sensor_id}: {value:.1f}%", False),
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("gen_fuel_pct", 10.0, "below", "critical", "Generator fuel critical at {sensor_id}: {value:.1f}%", False),
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("gen_load_pct", 85.0, "above", "warning", "Generator load high at {sensor_id}: {value:.1f}%", False),
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("gen_load_pct", 95.0, "above", "critical", "Generator overloaded at {sensor_id}: {value:.1f}%", False),
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("gen_coolant_c", 95.0, "above", "warning", "Generator coolant temperature high at {sensor_id}: {value:.1f}°C", False),
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("gen_coolant_c", 105.0, "above", "critical", "Generator coolant critical at {sensor_id}: {value:.1f}°C — risk of shutdown", False),
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("gen_oil_press", 2.0, "below", "critical", "Generator oil pressure low at {sensor_id}: {value:.1f} bar", False),
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# Generator — state transitions (locked)
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("gen_state", 0.5, "above", "warning", "Generator running at {sensor_id} — site is on standby power", True),
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("gen_state", -0.5, "below", "critical", "Generator fault at {sensor_id} — no standby power available", True),
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# PDU phase imbalance
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("pdu_imbalance", 5.0, "above", "warning", "PDU phase imbalance at {sensor_id}: {value:.1f}%", False),
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("pdu_imbalance", 15.0, "above", "critical", "PDU phase imbalance critical at {sensor_id}: {value:.1f}%", False),
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# ATS — numeric
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("ats_ua_v", 50.0, "below", "critical", "Utility A power failure at {sensor_id} — supply lost", False),
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# ATS — state (locked)
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("ats_active", 1.5, "above", "warning", "ATS transferred to generator at {sensor_id} — utility power lost", True),
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# Chiller — numeric
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("chiller_cop", 2.5, "below", "warning", "Chiller running inefficiently at {sensor_id}: COP {value:.2f}", False),
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# Chiller — state (locked)
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("chiller_state", 0.5, "below", "critical", "Chiller fault at {sensor_id} — CHW supply lost", True),
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# VESDA fire — state (all locked)
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("vesda_level", 0.5, "above", "warning", "VESDA smoke detected at {sensor_id}: level elevated", True),
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("vesda_level", 1.5, "above", "warning", "VESDA action threshold reached at {sensor_id}", True),
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("vesda_level", 2.5, "above", "critical", "VESDA FIRE ALARM at {sensor_id}!", True),
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("vesda_flow", 0.5, "below", "critical", "VESDA aspirator flow fault at {sensor_id} — detector may be compromised", True),
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("vesda_det1", 0.5, "below", "warning", "VESDA detector 1 fault at {sensor_id}", True),
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("vesda_det2", 0.5, "below", "warning", "VESDA detector 2 fault at {sensor_id}", True),
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# Network — numeric
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("net_pkt_loss_pct", 1.0, "above", "warning", "Packet loss detected at {sensor_id}: {value:.1f}%", False),
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("net_pkt_loss_pct", 5.0, "above", "critical", "High packet loss at {sensor_id}: {value:.1f}%", False),
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("net_temp_c", 65.0, "above", "warning", "Switch temperature high at {sensor_id}: {value:.1f}°C", False),
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("net_temp_c", 75.0, "above", "critical", "Switch temperature critical at {sensor_id}: {value:.1f}°C", False),
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# Network — state (locked)
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("net_state", 0.5, "above", "warning", "Network switch degraded at {sensor_id}", True),
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("net_state", 1.5, "above", "critical", "Network switch down at {sensor_id} — connectivity lost", True),
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]
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# ── Sensor seed data ────────────────────────────────────────────────────────────
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def _build_sensor_list() -> list[dict]:
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sensors = [
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{"device_id": "gen-01", "name": "Diesel Generator 1", "device_type": "generator", "room_id": None, "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/generator/gen-01"}},
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{"device_id": "ups-01", "name": "UPS Unit 1", "device_type": "ups", "room_id": None, "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/power/ups-01"}},
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{"device_id": "ups-02", "name": "UPS Unit 2", "device_type": "ups", "room_id": None, "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/power/ups-02"}},
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{"device_id": "ats-01", "name": "Transfer Switch 1", "device_type": "ats", "room_id": None, "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/power/ats/ats-01"}},
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{"device_id": "chiller-01", "name": "Chiller Plant 1", "device_type": "chiller", "room_id": None, "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/cooling/chiller/chiller-01"}},
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{"device_id": "crac-01", "name": "CRAC Unit — Hall A", "device_type": "crac", "room_id": "hall-a", "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/cooling/crac-01"}},
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{"device_id": "crac-02", "name": "CRAC Unit — Hall B", "device_type": "crac", "room_id": "hall-b", "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/cooling/crac-02"}},
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{"device_id": "vesda-hall-a","name": "VESDA Fire Zone — Hall A","device_type": "fire_zone", "room_id": "hall-a", "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/fire/vesda-hall-a"}},
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{"device_id": "vesda-hall-b","name": "VESDA Fire Zone — Hall B","device_type": "fire_zone", "room_id": "hall-b", "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/fire/vesda-hall-b"}},
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{"device_id": "leak-01", "name": "Leak Sensor — CRAC Zone A","device_type": "leak", "room_id": "hall-a", "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/leak/leak-01"}},
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{"device_id": "leak-02", "name": "Leak Sensor — Server Row B1","device_type": "leak", "room_id": "hall-b", "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/leak/leak-02"}},
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{"device_id": "leak-03", "name": "Leak Sensor — UPS Room", "device_type": "leak", "room_id": None, "rack_id": None, "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/leak/leak-03"}},
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{"device_id": "sw-core-01", "name": "Core Switch — Hall A", "device_type": "network_switch","room_id": "hall-a", "rack_id": "SG1A01.01", "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/network/sw-core-01"}},
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{"device_id": "sw-core-02", "name": "Core Switch — Hall B", "device_type": "network_switch","room_id": "hall-b", "rack_id": "SG1B01.01", "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/network/sw-core-02"}},
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{"device_id": "sw-edge-01", "name": "Edge / Uplink Switch", "device_type": "network_switch","room_id": "hall-a", "rack_id": "SG1A01.05", "protocol": "mqtt", "protocol_config": {"topic": "bms/sg-01/network/sw-edge-01"}},
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]
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# Generate racks
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for room_id, row_prefix in [("hall-a", "SG1A"), ("hall-b", "SG1B")]:
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for row_num in ["01", "02"]:
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for rack_num in range(1, 21):
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rack_id = f"{row_prefix}{row_num}.{rack_num:02d}"
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sensors.append({
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"device_id": rack_id,
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"name": f"Rack PDU — {rack_id}",
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"device_type": "rack",
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"room_id": room_id,
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"rack_id": rack_id,
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"protocol": "mqtt",
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"protocol_config": {
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"env_topic": f"bms/sg-01/{room_id}/{rack_id}/env",
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"pdu_topic": f"bms/sg-01/{room_id}/{rack_id}/power",
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},
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})
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return sensors
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SENSOR_SEED_DATA = _build_sensor_list()
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# ── Default settings ────────────────────────────────────────────────────────────
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DEFAULT_SETTINGS: dict[str, dict] = {
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"site": {
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"name": "Singapore DC01",
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"timezone": "Asia/Singapore",
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"description": "Production data centre — Singapore",
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},
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"notifications": {
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"critical_alarms": True,
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"warning_alarms": True,
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"generator_events": True,
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"maintenance_reminders": True,
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"webhook_url": "",
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"email_recipients": "",
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},
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"integrations": {
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"mqtt_host": "mqtt",
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"mqtt_port": 1883,
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},
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"page_prefs": {
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"default_time_range_hours": 6,
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"refresh_interval_seconds": 30,
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},
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}
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# ── Seed functions ──────────────────────────────────────────────────────────────
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async def seed_thresholds(session: AsyncSession) -> None:
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result = await session.execute(
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text("SELECT COUNT(*) FROM alarm_thresholds WHERE site_id = :s"),
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{"s": SITE_ID},
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)
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if result.scalar() > 0:
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return
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for st, tv, direction, severity, msg, locked in THRESHOLD_SEED_DATA:
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await session.execute(text("""
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INSERT INTO alarm_thresholds
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(site_id, sensor_type, threshold_value, direction, severity, message_template, enabled, locked)
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VALUES
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(:site_id, :sensor_type, :threshold_value, :direction, :severity, :message_template, true, :locked)
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"""), {
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"site_id": SITE_ID, "sensor_type": st, "threshold_value": tv,
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"direction": direction, "severity": severity,
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"message_template": msg, "locked": locked,
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})
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await session.commit()
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logger.info(f"Seeded {len(THRESHOLD_SEED_DATA)} alarm threshold rules")
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async def seed_sensors(session: AsyncSession) -> None:
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result = await session.execute(
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text("SELECT COUNT(*) FROM sensors WHERE site_id = :s"),
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{"s": SITE_ID},
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)
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if result.scalar() > 0:
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return
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for s in SENSOR_SEED_DATA:
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await session.execute(text("""
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INSERT INTO sensors
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(site_id, device_id, name, device_type, room_id, rack_id, protocol, protocol_config, enabled)
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VALUES
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(:site_id, :device_id, :name, :device_type, :room_id, :rack_id, :protocol, :protocol_config, true)
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ON CONFLICT (site_id, device_id) DO NOTHING
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"""), {
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"site_id": SITE_ID,
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"device_id": s["device_id"],
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"name": s["name"],
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"device_type": s["device_type"],
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"room_id": s.get("room_id"),
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"rack_id": s.get("rack_id"),
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"protocol": s["protocol"],
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"protocol_config": json.dumps(s["protocol_config"]),
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})
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await session.commit()
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logger.info(f"Seeded {len(SENSOR_SEED_DATA)} sensor devices")
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async def seed_settings(session: AsyncSession) -> None:
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for category, defaults in DEFAULT_SETTINGS.items():
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result = await session.execute(text("""
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SELECT COUNT(*) FROM site_settings
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WHERE site_id = :s AND category = :cat AND key = 'config'
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"""), {"s": SITE_ID, "cat": category})
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if result.scalar() > 0:
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continue
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await session.execute(text("""
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INSERT INTO site_settings (site_id, category, key, value)
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VALUES (:site_id, :category, 'config', :value)
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ON CONFLICT (site_id, category, key) DO NOTHING
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"""), {"site_id": SITE_ID, "category": category, "value": json.dumps(defaults)})
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await session.commit()
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logger.info("Seeded site settings defaults")
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async def run_all_seeds(session: AsyncSession) -> None:
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await seed_thresholds(session)
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await seed_sensors(session)
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await seed_settings(session)
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