Alexis Fourmaux
aa72971627
This is useful for multitask environments (like the API), to avoid conflicts
48 lines
1.7 KiB
Python
48 lines
1.7 KiB
Python
import logging
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import psycopg2
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from ports import DeviceRepository, ReadingRepository
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from domain.exceptions import DatabaseError
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from infrastructure.db import get_conn
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log = logging.getLogger(__name__)
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class PgDeviceRepository(DeviceRepository):
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def get_or_create_device_id(self, dev_eui: str) -> str:
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try:
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with get_conn() as conn:
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with conn.cursor() as cur:
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cur.execute(
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"""
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INSERT INTO device (device_eui)
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VALUES (%s)
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ON CONFLICT (device_eui) DO NOTHING
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""",
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(dev_eui,),
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)
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cur.execute(
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"SELECT device_id FROM device WHERE device_eui = %s", (dev_eui,)
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)
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return str(cur.fetchone()[0]) # type: ignore
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except psycopg2.DatabaseError as e:
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raise DatabaseError(f"Erreur de création du device {dev_eui}") from e
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class PgReadingRepository(ReadingRepository):
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def insert_reading(self, device_id: str, pulse_count: int) -> None:
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try:
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with get_conn() as conn:
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with conn.cursor() as cur:
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cur.execute(
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"""
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INSERT INTO reading (device_id, date, pulses)
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VALUES (%s, NOW(), %s)
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""",
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(device_id, pulse_count),
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)
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except psycopg2.DatabaseError as e:
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raise DatabaseError(
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f"Erreur d'enregistrement de la télérelève sur le device {device_id}"
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) from e
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