Added constant for struct encoding
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1 changed files with 5 additions and 7 deletions
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@ -29,10 +29,8 @@ INVALID_METADATA_LAYOUT = 2
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INVALID_DATA_TYPE = 3
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INVALID_DATA_TYPE = 3
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META_ROUTE = "meta"
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META_ROUTE = "meta"
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COMPRESSION_LEVEL = 3
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COMPRESSION_LEVEL = 3
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PACK_FORMAT = "Bh"
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class ConvertFailedError(ValueError):
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class ConvertFailedError(ValueError):
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@ -76,7 +74,7 @@ class Meta:
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def create_metadata(data_type, converted_route, indexed_dict=False):
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def create_metadata(data_type, converted_route, indexed_dict=False):
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return struct.pack("bh",
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return struct.pack(PACK_FORMAT,
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DATA_TYPES[data_type] if not indexed_dict else DATA_TYPES[INDEXED_DICT],
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DATA_TYPES[data_type] if not indexed_dict else DATA_TYPES[INDEXED_DICT],
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converted_route)
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converted_route)
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@ -108,7 +106,7 @@ def pack_message(data, exchange_route, compression_level,
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def parse_metadata(message):
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def parse_metadata(message):
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metadata = struct.unpack("bh", message[:4])
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metadata = struct.unpack(PACK_FORMAT, message[:4])
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return Metadata(metadata[0], metadata[1])
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return Metadata(metadata[0], metadata[1])
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