fix/355-increase-tree-service-client-cache-size #359
2 changed files with 187 additions and 92 deletions
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@ -1,6 +1,7 @@
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package engine
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import (
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"math/rand"
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"sort"
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objectcore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
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@ -12,10 +13,38 @@ import (
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// cursor. Use nil cursor object to start listing again.
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var ErrEndOfListing = shard.ErrEndOfListing
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// Cursor is a type for continuous object listing.
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// Cursor is a type for continuous object listing. Cursor contains shard IDs to read
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// and shard cursors that contain state from previous read.
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type Cursor struct {
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shardID string
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shardCursor *shard.Cursor
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current string
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shardIDs map[string]bool
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shardIDToCursor map[string]*shard.Cursor
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}
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func (c *Cursor) getCurrentShardCursor() *shard.Cursor {
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return c.shardIDToCursor[c.current]
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}
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func (c *Cursor) setCurrentShardCursor(sc *shard.Cursor) {
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c.shardIDToCursor[c.current] = sc
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}
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func (c *Cursor) nextShard() bool {
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var shardsToRead []string
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for shardID, read := range c.shardIDs {
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if !read {
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shardsToRead = append(shardsToRead, shardID)
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}
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}
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if len(shardsToRead) == 0 {
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return false
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}
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c.current = shardsToRead[rand.Intn(len(shardsToRead))]
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return true
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}
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func (c *Cursor) setShardRead(shardID string) {
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c.shardIDs[shardID] = true
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}
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// ListWithCursorPrm contains parameters for ListWithCursor operation.
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@ -57,65 +86,69 @@ func (l ListWithCursorRes) Cursor() *Cursor {
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// Does not include inhumed objects. Use cursor value from the response
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// for consecutive requests.
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//
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// If count param is big enough, then the method reads objects from different shards
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// by portions. In this case shards are chosen randomly, if they're not read out yet.
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//
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// Adding a shard between ListWithCursor does not invalidate the cursor but new shard
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// won't be listed.
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// Removing a shard between ListWithCursor leads to the undefined behavior
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// (e.g. usage of the objects from the removed shard).
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//
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// Returns ErrEndOfListing if there are no more objects to return or count
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// parameter set to zero.
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func (e *StorageEngine) ListWithCursor(prm ListWithCursorPrm) (ListWithCursorRes, error) {
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result := make([]objectcore.AddressWithType, 0, prm.count)
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// 1. Get available shards and sort them.
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e.mtx.RLock()
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shardIDs := make([]string, 0, len(e.shards))
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for id := range e.shards {
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shardIDs = append(shardIDs, id)
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}
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e.mtx.RUnlock()
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if len(shardIDs) == 0 {
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return ListWithCursorRes{}, ErrEndOfListing
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}
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sort.Slice(shardIDs, func(i, j int) bool {
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return shardIDs[i] < shardIDs[j]
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})
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// 2. Prepare cursor object.
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// Set initial cursors
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cursor := prm.cursor
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if cursor == nil {
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cursor = &Cursor{shardID: shardIDs[0]}
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shardIDs := getSortedShardIDs(e)
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if len(shardIDs) == 0 {
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return ListWithCursorRes{}, ErrEndOfListing
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}
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cursor = newCursor(shardIDs)
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}
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// 3. Iterate over available shards. Skip unavailable shards.
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for i := range shardIDs {
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const (
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splitShardCountLimit = 100
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shardsNum = 4
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)
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batchSize := prm.count
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if batchSize >= splitShardCountLimit {
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batchSize /= shardsNum
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}
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for cursor.nextShard() {
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if len(result) >= int(prm.count) {
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break
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}
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if shardIDs[i] < cursor.shardID {
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continue
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}
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curr := cursor.current
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e.mtx.RLock()
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shardInstance, ok := e.shards[shardIDs[i]]
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shardInstance, ok := e.shards[curr]
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e.mtx.RUnlock()
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if !ok {
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cursor.setShardRead(curr)
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continue
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}
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count := uint32(int(prm.count) - len(result))
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count := prm.count - uint32(len(result))
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if count > batchSize {
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count = batchSize
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}
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var shardPrm shard.ListWithCursorPrm
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shardPrm.WithCount(count)
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if shardIDs[i] == cursor.shardID {
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shardPrm.WithCursor(cursor.shardCursor)
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}
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shardPrm.WithCursor(cursor.getCurrentShardCursor())
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res, err := shardInstance.ListWithCursor(shardPrm)
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if err != nil {
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cursor.setShardRead(curr)
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continue
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}
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result = append(result, res.AddressList()...)
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cursor.shardCursor = res.Cursor()
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cursor.shardID = shardIDs[i]
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cursor.setCurrentShardCursor(res.Cursor())
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}
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if len(result) == 0 {
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@ -127,3 +160,23 @@ func (e *StorageEngine) ListWithCursor(prm ListWithCursorPrm) (ListWithCursorRes
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cursor: cursor,
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}, nil
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}
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func getSortedShardIDs(e *StorageEngine) []string {
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e.mtx.RLock()
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shardIDs := make([]string, 0, len(e.shards))
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for id := range e.shards {
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shardIDs = append(shardIDs, id)
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}
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e.mtx.RUnlock()
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sort.Strings(shardIDs)
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return shardIDs
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}
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func newCursor(shardIDs []string) *Cursor {
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shardIDsMap := make(map[string]bool)
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shardIDToCursor := make(map[string]*shard.Cursor)
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for _, shardID := range shardIDs {
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shardIDsMap[shardID] = false
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}
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return &Cursor{shardIDs: shardIDsMap, shardIDToCursor: shardIDToCursor}
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}
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@ -2,77 +2,119 @@ package engine
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import (
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"context"
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"sort"
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"testing"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
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meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/pilorama"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
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cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
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objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
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"github.com/stretchr/testify/require"
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"go.uber.org/zap"
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)
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func TestListWithCursor(t *testing.T) {
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s1 := testNewShard(t, 1)
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s2 := testNewShard(t, 2)
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e := testNewEngine(t).setInitializedShards(t, s1, s2).engine
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t.Cleanup(func() {
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e.Close()
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os.RemoveAll(t.Name())
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})
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const total = 20
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expected := make([]object.AddressWithType, 0, total)
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got := make([]object.AddressWithType, 0, total)
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for i := 0; i < total; i++ {
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containerID := cidtest.ID()
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obj := testutil.GenerateObjectWithCID(containerID)
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var prm PutPrm
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prm.WithObject(obj)
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err := e.Put(context.Background(), prm)
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require.NoError(t, err)
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expected = append(expected, object.AddressWithType{Type: objectSDK.TypeRegular, Address: object.AddressOf(obj)})
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}
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expected = sortAddresses(expected)
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var prm ListWithCursorPrm
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prm.WithCount(1)
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res, err := e.ListWithCursor(prm)
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require.NoError(t, err)
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require.NotEmpty(t, res.AddressList())
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got = append(got, res.AddressList()...)
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for i := 0; i < total-1; i++ {
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prm.WithCursor(res.Cursor())
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res, err = e.ListWithCursor(prm)
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if errors.Is(err, ErrEndOfListing) {
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break
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}
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got = append(got, res.AddressList()...)
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}
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prm.WithCursor(res.Cursor())
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_, err = e.ListWithCursor(prm)
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require.ErrorIs(t, err, ErrEndOfListing)
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got = sortAddresses(got)
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require.Equal(t, expected, got)
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}
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func sortAddresses(addrWithType []object.AddressWithType) []object.AddressWithType {
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sort.Slice(addrWithType, func(i, j int) bool {
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return addrWithType[i].Address.EncodeToString() < addrWithType[j].Address.EncodeToString()
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})
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return addrWithType
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}
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func TestListWithCursor(t *testing.T) {
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tests := []struct {
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name string
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shardNum int
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objectNum int
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batchSize uint32
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}{
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{
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name: "one shard, few objects, small batch size",
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shardNum: 1,
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objectNum: 2,
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batchSize: 1,
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},
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{
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name: "one shard, many objects, big batch size",
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shardNum: 1,
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objectNum: 53,
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batchSize: 100,
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},
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{
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name: "many shards, many objects, small batch size",
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shardNum: 6,
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objectNum: 66,
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batchSize: 1,
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},
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{
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name: "many shards, many objects, big batch size",
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shardNum: 6,
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objectNum: 99,
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batchSize: 100,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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e := testNewEngine(t).setShardsNumOpts(t, tt.shardNum, func(id int) []shard.Option {
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return []shard.Option{
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shard.WithLogger(&logger.Logger{Logger: zap.L()}),
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shard.WithBlobStorOptions(
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blobstor.WithStorages(
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newStorages(filepath.Join(t.Name(), tt.name, fmt.Sprintf("%d.blobstor", id)),
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1<<20))),
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shard.WithPiloramaOptions(pilorama.WithPath(filepath.Join(t.Name(), tt.name, fmt.Sprintf("%d.pilorama", id)))),
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shard.WithMetaBaseOptions(
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meta.WithPath(filepath.Join(t.Name(), tt.name, fmt.Sprintf("%d.metabase", id))),
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meta.WithPermissions(0700),
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meta.WithEpochState(epochState{}),
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)}
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}).engine
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require.NoError(t, e.Open())
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require.NoError(t, e.Init(context.Background()))
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t.Cleanup(func() {
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e.Close()
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os.RemoveAll(t.Name())
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})
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expected := make([]object.AddressWithType, 0, tt.objectNum)
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got := make([]object.AddressWithType, 0, tt.objectNum)
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for i := 0; i < tt.objectNum; i++ {
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containerID := cidtest.ID()
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obj := testutil.GenerateObjectWithCIDWithPayload(containerID, []byte{'a'})
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var prm PutPrm
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prm.WithObject(obj)
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err := e.Put(context.Background(), prm)
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require.NoError(t, err)
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expected = append(expected, object.AddressWithType{Type: objectSDK.TypeRegular, Address: object.AddressOf(obj)})
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}
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expected = sortAddresses(expected)
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var prm ListWithCursorPrm
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prm.count = tt.batchSize
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for {
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res, err := e.ListWithCursor(prm)
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if err == ErrEndOfListing {
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require.Empty(t, res.AddressList())
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break
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}
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require.NotEmpty(t, res.AddressList())
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got = append(got, res.AddressList()...)
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prm.cursor = res.Cursor()
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}
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got = sortAddresses(got)
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require.Equal(t, expected, got)
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})
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}
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}
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