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feat: add CRC64-AVRO-LE fingerprint type#491
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nrwiersma merged 2 commits intohamba:mainfrom Jan 30, 2025
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See also #490. |
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One minor issue, otherwise it is looking good.
The Avro specification details a Single Object Encoding using a header to associate a schema ID with an Avro payload. The ID is defined as the CRC64 fingerprint in little-endian encoding. The pkg/crc64 module only provides big-endian CRC64, and the CRC64-AVRO fingerprint type is implemented as such. The specification does not detail endianness of the CRC64-AVRO fingerprint itself (only when embedded in an SOE header). To avoid breaking existing CRC64-AVRO fingerprints, add a new fingerprint type CRC64-AVRO-LE, identical to CRC64-AVRO except little-endian. Add NewWithByteOrder and SumWithByteOrder top-level functions to crc64 so users can configure the hasher to use a specific byte order. Add tests and benchmarks for the SumWithByteOrder function. Fixes hamba#489.
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Thanks! Oh, I forgot about the README in all the revisions. Were you thinking something like "if you want to use a schema fingerprint for SOE, use CRC64-AVRO-LE because reasons"? |
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No stress, it will be documented in the release. I think that should be fine. |
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Alright, I'll leave it to you. Thanks again. |
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The Avro specification details a Single Object Encoding using a header
to associate a schema ID with an Avro payload. The ID is defined as the
CRC64 fingerprint in little-endian encoding.
The pkg/crc64 module only provides big-endian CRC64, and the CRC64-AVRO
fingerprint type is implemented as such. The specification does not
detail endianness of the CRC64-AVRO fingerprint itself (only when
embedded in an SOE header).
To avoid breaking existing CRC64-AVRO fingerprints, add a new
fingerprint type CRC64-AVRO-LE, identical to CRC64-AVRO except
little-endian.
Add NewWithByteOrder and SumWithByteOrder top-level functions to crc64
so users can configure the hasher to use a specific byte order.
Add tests and benchmarks for the SumWithByteOrder function.
Fixes #489.