mirror of
https://github.com/luxfi/zapdb.git
synced 2026-10-30 15:12:20 +00:00
zeekay
a6be21b7ea
Removed /v4 suffix from module path and all internal imports. Go module is now github.com/luxfi/zapdb (no major version suffix). Import as: import "github.com/luxfi/zapdb" No code changes — only module path and import rewrite.
40 lines
1.0 KiB
Go
40 lines
1.0 KiB
Go
/*
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* SPDX-FileCopyrightText: © 2017-2025 Istari Digital, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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package y
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import (
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stderrors "errors"
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"hash/crc32"
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"github.com/cespare/xxhash/v2"
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"github.com/luxfi/zapdb/pb"
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)
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// ErrChecksumMismatch is returned at checksum mismatch.
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var ErrChecksumMismatch = stderrors.New("checksum mismatch")
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// CalculateChecksum calculates checksum for data using ct checksum type.
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func CalculateChecksum(data []byte, ct pb.Checksum_Algorithm) uint64 {
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switch ct {
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case pb.Checksum_CRC32C:
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return uint64(crc32.Checksum(data, CastagnoliCrcTable))
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case pb.Checksum_XXHash64:
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return xxhash.Sum64(data)
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default:
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panic("checksum type not supported")
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}
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}
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// VerifyChecksum validates the checksum for the data against the given expected checksum.
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func VerifyChecksum(data []byte, expected *pb.Checksum) error {
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actual := CalculateChecksum(data, expected.Algo)
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if actual != expected.Sum {
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return Wrapf(ErrChecksumMismatch, "actual: %d, expected: %d", actual, expected.Sum)
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}
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return nil
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}
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