path-encoding.go

func BenchmarkEncoding(b *testing.B) {
	segments := [][]byte{
		[]byte{'a', 'b', 'c', 'd', '1', '2', '3', '4', '5'},
		[]byte{'a', '/', 'a', '2', 'a', 'a', 0, '1', 'b', 255},
		[]byte{'/', '/', 'a', 0, 'a', 'a', 0, '1', 'b', 'g', 'a', 'b', '/'},
		[]byte{0, '/', 'a', '0', 'a', 'a', 0, '1', 'b', 'g', 'a', 'b', 0},
		[]byte{'a', '/', 'a', '2', 'a', 'a', 0, '1', 'b', 255, 'a', '/', 'a', '2', 'a', '/', 0, '1', 'b', 255},
	}

	b.Run("ReplaceAll", func(b *testing.B) {
		for i := 0; i < b.N; i++ {
			for _, segment := range segments {
				encoded := encode1(segment)
				_ = decode1(encoded)
			}
		}
	})
	b.Run("Loop", func(b *testing.B) {
		for i := 0; i < b.N; i++ {
			for _, segment := range segments {
				encoded := encodeSegment(segment)
				_ = decodeSegment(encoded)
			}
		}
	})
	b.Run("Base64", func(b *testing.B) {
		for i := 0; i < b.N; i++ {
			for _, segment := range segments {
				encoded := base64.RawURLEncoding.EncodeToString(segment)
				_, _ = base64.RawURLEncoding.DecodeString(encoded)
			}
		}
	})
}

func encode1(segment []byte) []byte {
	replaced := bytes.ReplaceAll(segment, []byte{0}, []byte{0, 1})
	replaced = bytes.ReplaceAll(replaced, []byte{'/'}, []byte{0, 2})
	return replaced
}

func decode1(segment []byte) []byte {
	replaced := bytes.ReplaceAll(segment, []byte{0, 2}, []byte{'/'})
	replaced = bytes.ReplaceAll(replaced, []byte{0, 1}, []byte{0})
	return replaced
}

goos: linux
goarch: amd64
pkg: storj.io/storj/pkg/encryption
BenchmarkEncoding/ReplaceAll-10 1000000 1457 ns/op 416 B/op 20 allocs/op
BenchmarkEncoding/Loop-10 3000000 554 ns/op 368 B/op 14 allocs/op
BenchmarkEncoding/Base64-10 2000000 682 ns/op 352 B/op 15 allocs/op
PASS
ok storj.io/storj/pkg/encryption 5.696s
Success: Benchmarks passed.