mirror of
https://github.com/kopia/kopia.git
synced 2026-01-25 06:48:48 -05:00
09415e0c7d
Upgrades go to 1.22 and switches to new-style for loops --------- Co-authored-by: Julio López <1953782+julio-lopez@users.noreply.github.com>
131 lines
2.6 KiB
Go
131 lines
2.6 KiB
Go
package bigmap_test
|
|
|
|
import (
|
|
"crypto/sha256"
|
|
"encoding/binary"
|
|
"hash"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
|
|
"github.com/kopia/kopia/internal/bigmap"
|
|
"github.com/kopia/kopia/internal/testlogging"
|
|
)
|
|
|
|
func TestGrowingMap(t *testing.T) {
|
|
ctx := testlogging.Context(t)
|
|
|
|
impl, err := bigmap.NewMapWithOptions(ctx, &bigmap.Options{
|
|
InitialSizeLogarithm: 9,
|
|
NumMemorySegments: 3,
|
|
MemorySegmentSize: 1000,
|
|
FileSegmentSize: 4 << 20,
|
|
})
|
|
require.NoError(t, err)
|
|
|
|
defer impl.Close(ctx)
|
|
|
|
h := sha256.New()
|
|
|
|
// insert 20K hashes
|
|
for i := range 20000 {
|
|
var keybuf, valbuf, valbuf2 [sha256.Size]byte
|
|
|
|
k := sha256Key(h, keybuf[:0], i)
|
|
v := sha256Key(h, valbuf[:0], i+3)
|
|
|
|
require.True(t, impl.PutIfAbsent(ctx, k, v))
|
|
|
|
// ensure that previously written key is still there.
|
|
pkindex := i / 2
|
|
pk := sha256Key(h, keybuf[:0], pkindex)
|
|
require.True(t, impl.Contains(pk))
|
|
|
|
pv, ok, err := impl.Get(ctx, valbuf2[:0], pk)
|
|
require.NoError(t, err)
|
|
require.True(t, ok)
|
|
require.Equal(t, pv, sha256Key(h, valbuf[:0], pkindex+3))
|
|
|
|
// ensure that key not written yet is not there.
|
|
nk := sha256Key(h, keybuf[:0], i+1)
|
|
|
|
require.False(t, impl.Contains(nk))
|
|
|
|
_, ok2, err := impl.Get(ctx, valbuf2[:0], nk)
|
|
require.NoError(t, err)
|
|
require.False(t, ok2)
|
|
}
|
|
}
|
|
|
|
func sha256Key(h hash.Hash, out []byte, i int) []byte {
|
|
var num [8]byte
|
|
|
|
// generate key=sha256(i) without allocations.
|
|
h.Reset()
|
|
binary.LittleEndian.PutUint64(num[:], uint64(i))
|
|
h.Write(num[:])
|
|
|
|
s := h.Sum(out)
|
|
|
|
return s
|
|
}
|
|
|
|
func BenchmarkMap_NoValue(b *testing.B) {
|
|
ctx := testlogging.Context(b)
|
|
m, err := bigmap.NewMapWithOptions(ctx, nil)
|
|
require.NoError(b, err)
|
|
|
|
defer m.Close(ctx)
|
|
|
|
benchmarkMap(b, m, []byte{})
|
|
}
|
|
|
|
func BenchmarkMap_WithValue(b *testing.B) {
|
|
ctx := testlogging.Context(b)
|
|
m, err := bigmap.NewMap(ctx)
|
|
require.NoError(b, err)
|
|
|
|
defer m.Close(ctx)
|
|
|
|
benchmarkMap(b, m, []byte{1, 2, 3})
|
|
}
|
|
|
|
//nolint:thelper
|
|
func benchmarkMap(b *testing.B, m *bigmap.Map, someVal []byte) {
|
|
ctx := testlogging.Context(b)
|
|
|
|
b.ResetTimer()
|
|
|
|
var (
|
|
h = sha256.New()
|
|
num [8]byte
|
|
keyBuf [sha256.Size]byte
|
|
)
|
|
|
|
for i := range b.N {
|
|
// generate key=sha256(i) without allocations.
|
|
h.Reset()
|
|
binary.LittleEndian.PutUint64(num[:], uint64(i))
|
|
h.Write(num[:])
|
|
key := h.Sum(keyBuf[:0])
|
|
|
|
m.PutIfAbsent(ctx, key, someVal)
|
|
}
|
|
|
|
valBuf := make([]byte, 10)
|
|
|
|
for range 4 {
|
|
for i := range b.N {
|
|
// generate key=sha256(i) without allocations.
|
|
h.Reset()
|
|
binary.LittleEndian.PutUint64(num[:], uint64(i))
|
|
h.Write(num[:])
|
|
key := h.Sum(keyBuf[:0])
|
|
|
|
_, ok, err := m.Get(ctx, valBuf[:0], key)
|
|
require.NoError(b, err)
|
|
require.True(b, ok)
|
|
}
|
|
}
|
|
}
|