41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
"""Per-printer supply alert state.
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The supply poller (flask printers check-toner-alerts) is stateless: it reads
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live levels from Zabbix each run. To alert once per downward crossing (and
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re-arm after a refill) it needs to remember the last tier it alerted for each
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printer + supply. One row per (printerid, supplykey); supplykey is the toner
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color (black/cyan/magenta/yellow) or the raw item name when color is unknown.
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"""
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from shopdb.api import db, BaseModel
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class PrinterSupplyAlert(BaseModel):
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"""Last-alerted tier for one printer supply. lasttier in ok/warning/critical."""
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__tablename__ = 'printersupplyalerts'
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printersupplyalertid = db.Column(db.Integer, primary_key=True)
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printerid = db.Column(
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db.Integer,
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db.ForeignKey('printers.printerid', ondelete='CASCADE'),
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nullable=False,
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index=True,
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)
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supplykey = db.Column(
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db.String(64),
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nullable=False,
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comment='Toner color, or Zabbix item name when color is unknown',
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)
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lasttier = db.Column(
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db.String(16),
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nullable=False,
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default='ok',
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comment='Last tier alerted: ok, warning, or critical',
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)
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__table_args__ = (
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db.UniqueConstraint('printerid', 'supplykey',
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name='uq_printersupplyalert_printer_key'),
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)
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