shard: fix GetRange for objects stored in the write-cache

Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>
This commit is contained in:
Evgenii Stratonikov 2022-07-29 10:54:49 +03:00 committed by fyrchik
parent 07465849a4
commit 72586f17d4
3 changed files with 123 additions and 6 deletions

View file

@ -87,8 +87,12 @@ func (s *Shard) Get(prm GetPrm) (GetRes, error) {
return res.Object(), nil
}
wc := func(c writecache.Cache) (*objectSDK.Object, error) {
return c.Get(prm.addr)
}
skipMeta := prm.skipMeta || s.GetMode().NoMetabase()
obj, hasMeta, err := s.fetchObjectData(prm.addr, skipMeta, big, small)
obj, hasMeta, err := s.fetchObjectData(prm.addr, skipMeta, big, small, wc)
return GetRes{
obj: obj,
@ -97,16 +101,16 @@ func (s *Shard) Get(prm GetPrm) (GetRes, error) {
}
// fetchObjectData looks through writeCache and blobStor to find object.
func (s *Shard) fetchObjectData(addr oid.Address, skipMeta bool, big, small storFetcher) (*objectSDK.Object, bool, error) {
func (s *Shard) fetchObjectData(addr oid.Address, skipMeta bool, big, small storFetcher, wc func(w writecache.Cache) (*objectSDK.Object, error)) (*objectSDK.Object, bool, error) {
var (
err error
res *objectSDK.Object
)
if s.hasWriteCache() {
res, err = s.writeCache.Get(addr)
if err == nil {
return res, false, nil
res, err := wc(s.writeCache)
if err == nil || IsErrOutOfRange(err) {
return res, false, err
}
if writecache.IsErrNotFound(err) {

View file

@ -3,6 +3,8 @@ package shard
import (
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobovnicza"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/writecache"
apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
"github.com/nspcc-dev/neofs-sdk-go/object"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
)
@ -102,8 +104,26 @@ func (s *Shard) GetRange(prm RngPrm) (RngRes, error) {
return obj, nil
}
wc := func(c writecache.Cache) (*object.Object, error) {
res, err := c.Get(prm.addr)
if err != nil {
return nil, err
}
payload := res.Payload()
from := rng.GetOffset()
to := from + rng.GetLength()
if uint64(len(payload)) < to {
return nil, apistatus.ObjectOutOfRange{}
}
obj := object.New()
obj.SetPayload(payload[from:to])
return obj, nil
}
skipMeta := prm.skipMeta || s.GetMode().NoMetabase()
obj, hasMeta, err := s.fetchObjectData(prm.addr, skipMeta, big, small)
obj, hasMeta, err := s.fetchObjectData(prm.addr, skipMeta, big, small, wc)
return RngRes{
obj: obj,

View file

@ -0,0 +1,93 @@
package shard_test
import (
"testing"
"github.com/nspcc-dev/neo-go/pkg/util/slice"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard"
"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/writecache"
apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
objectSDK "github.com/nspcc-dev/neofs-sdk-go/object"
"github.com/stretchr/testify/require"
)
func TestShard_GetRange(t *testing.T) {
t.Run("without write cache", func(t *testing.T) {
testShardGetRange(t, false)
})
t.Run("with write cache", func(t *testing.T) {
testShardGetRange(t, true)
})
}
func testShardGetRange(t *testing.T, hasWriteCache bool) {
type testCase struct {
hasErr bool
name string
payloadSize int
rng *objectSDK.Range
}
const (
writeCacheMaxSize = 1024
smallObjectSize = 2048
)
newRange := func(off, ln uint64) *objectSDK.Range {
rng := objectSDK.NewRange()
rng.SetOffset(off)
rng.SetLength(ln)
return rng
}
testCases := []testCase{
{false, "small object, good", 1024, newRange(11, 123)},
{true, "small object, out of range", 1024, newRange(10, 1020)},
{false, "big object, good", 2048, newRange(11, 123)},
{true, "big object, out of range", 2048, newRange(100, 2000)},
}
if hasWriteCache {
testCases = append(testCases,
testCase{false, "object in write-cache, good", 100, newRange(2, 18)},
testCase{true, "object in write-cache, out of range", 100, newRange(4, 99)})
}
sh := newCustomShard(t, t.TempDir(), hasWriteCache,
[]writecache.Option{writecache.WithMaxMemSize(0), writecache.WithMaxObjectSize(writeCacheMaxSize)},
[]blobstor.Option{blobstor.WithSmallSizeLimit(smallObjectSize)})
defer releaseShard(sh, t)
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
obj := generateObject(t)
addAttribute(obj, "foo", "bar")
addPayload(obj, tc.payloadSize)
addr := object.AddressOf(obj)
payload := slice.Copy(obj.Payload())
var putPrm shard.PutPrm
putPrm.SetObject(obj)
_, err := sh.Put(putPrm)
require.NoError(t, err)
var rngPrm shard.RngPrm
rngPrm.SetAddress(addr)
rngPrm.SetRange(tc.rng.GetOffset(), tc.rng.GetLength())
res, err := sh.GetRange(rngPrm)
if tc.hasErr {
require.ErrorAs(t, err, &apistatus.ObjectOutOfRange{})
} else {
require.Equal(t,
payload[tc.rng.GetOffset():tc.rng.GetOffset()+tc.rng.GetLength()],
res.Object().Payload())
}
})
}
}