45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
from .Messages import IMessage
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class ModelUrlMsg(IMessage):
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id = 0x90
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length = 4
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network_id = None
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thing_id = None
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url = None
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def __init__(self, data, thing = None):
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if isinstance(data, bytes):
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self.network_id = data[1]
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self.thing_id = data[2]
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# model url length is not needed here
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self.url = data[ModelUrlMsg.length:].decode("utf-8")
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else:
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self.network_id = data
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if thing is not None:
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self.thing_id = thing.id
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self.url = thing.model_url
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def Serialize(self, buffer_ref):
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if self.network_id is None or self.thing_id is None or self.url is None:
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return 0
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buffer: bytearray = buffer_ref[0]
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encoded_url = self.url.encode('utf-8')
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url_length = len(encoded_url)
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full_length = ModelUrlMsg.length + url_length
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if url_length == 0 or full_length > len(buffer):
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return 0
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buffer[0:ModelUrlMsg.length] = [
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ModelUrlMsg.id,
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self.network_id,
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self.thing_id,
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url_length
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]
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# Append the url string
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buffer[ModelUrlMsg.length:full_length] = encoded_url
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return full_length
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