25 lines
753 B
Python
25 lines
753 B
Python
"""批量信封。缺 data、空数组、超过 100 条：整包 422，一条都不落。
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单条字段错误不走这里，由 sales_goods 逐条 REJECTED，HTTP 仍 200。
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"""
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MAX_BATCH = 100
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class EnvelopeError(Exception):
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def __init__(self, message: str):
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self.message = message
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def parse_envelope(payload: object) -> list:
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if not isinstance(payload, dict) or "data" not in payload:
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raise EnvelopeError("缺少批量数据节点 data")
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data = payload["data"]
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if not isinstance(data, list):
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raise EnvelopeError("data 必须是数组")
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if len(data) == 0:
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raise EnvelopeError("data 不能为空")
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if len(data) > MAX_BATCH:
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raise EnvelopeError("一批最多 100 条")
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return data
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