github.com/m3db/m3@v1.5.1-0.20231129193456-75a402aa583b/src/aggregator/hash/hash.go

// Copyright (c) 2018 Uber Technologies, Inc.
//
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// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
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// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
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// THE SOFTWARE.

// Package hash is a temporary measure used as in between while m3aggregator
// is upgraded to use native source generated maps now accessible in m3x,
// these types are missing from m3x when native source generated maps
// were added.
package hash

import murmur3 "github.com/m3db/stackmurmur3/v2"

// Hash128 is a 128-bit hash of an ID consisting of two unsigned 64-bit ints.
type Hash128 struct {
	h0 uint64
	h1 uint64
}

// Murmur3Hash128 computes the 128-bit hash of an id.
func Murmur3Hash128(data []byte) Hash128 {
	h0, h1 := murmur3.Sum128(data)
	return Hash128{h0, h1}
}