47 lines
1.9 KiB
Python
47 lines
1.9 KiB
Python
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import aiomysql
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import logging
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logger = logging.getLogger(__name__)
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async def get_nodes_type(cfg: object, tool: str, unit: str, pool) -> tuple:
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"""Recupera le informazioni sui nodi (tipo, canali, input) per un dato strumento e unità.
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Args:
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cfg (object): L'oggetto di configurazione.
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tool (str): Il nome dello strumento.
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unit (str): Il nome dell'unità.
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pool: Il pool di connessioni al database.
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Returns:
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tuple: Una tupla contenente quattro liste: canali, tipi, ain, din.
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Se non vengono trovati risultati, restituisce (None, None, None, None).
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"""
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async with pool.acquire() as conn:
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async with conn.cursor(aiomysql.DictCursor) as cur:
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await cur.execute(f"""
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SELECT t.name AS name, n.seq AS seq, n.num AS num, n.channels AS channels, y.type AS type, n.ain AS ain, n.din AS din
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FROM {cfg.dbname}.{cfg.dbnodes} AS n
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INNER JOIN tools AS t ON t.id = n.tool_id
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INNER JOIN units AS u ON u.id = t.unit_id
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INNER JOIN nodetypes AS y ON n.nodetype_id = y.id
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WHERE y.type NOT IN ('Anchor Link', 'None') AND t.name = '{tool}' AND u.name = '{unit}'
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ORDER BY n.num;
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""")
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results = await cur.fetchall()
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logger.info(f"{unit} - {tool}: {cur.rowcount} rows selected to get node type/Ain/Din/channels.")
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if not results:
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logger.info(f"{unit} - {tool}: Node/Channels/Ain/Din not defined.")
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return None, None, None, None
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else:
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channels, types, ains, dins = [], [], [], []
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for row in results:
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channels.append(row['channels'])
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types.append(row['type'])
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ains.append(row['ain'])
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dins.append(row['din'])
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return channels, types, ains, dins
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