432 lines
10 KiB
Go
432 lines
10 KiB
Go
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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"sync"
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"sync/atomic"
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"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
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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/local_object_storage/shard/mode"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
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oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
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"git.frostfs.info/TrueCloudLab/hrw"
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"github.com/google/uuid"
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"github.com/panjf2000/ants/v2"
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"go.uber.org/zap"
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"golang.org/x/sync/errgroup"
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)
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var errShardNotFound = logicerr.New("shard not found")
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type hashedShard struct {
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shardWrapper
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hash uint64
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}
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type metricsWithID struct {
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id string
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mw MetricRegister
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}
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func (m *metricsWithID) SetShardID(id string) {
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// concurrent settings are not expected =>
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// no mutex protection
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m.id = id
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}
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func (m *metricsWithID) SetObjectCounter(objectType string, v uint64) {
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m.mw.SetObjectCounter(m.id, objectType, v)
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}
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func (m *metricsWithID) AddToObjectCounter(objectType string, delta int) {
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m.mw.AddToObjectCounter(m.id, objectType, delta)
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}
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func (m *metricsWithID) IncObjectCounter(objectType string) {
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m.mw.AddToObjectCounter(m.id, objectType, +1)
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}
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func (m *metricsWithID) SetMode(mode mode.Mode) {
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m.mw.SetMode(m.id, mode)
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}
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func (m *metricsWithID) AddToContainerSize(cnr string, size int64) {
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m.mw.AddToContainerSize(cnr, size)
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}
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func (m *metricsWithID) AddToPayloadSize(size int64) {
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m.mw.AddToPayloadCounter(m.id, size)
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}
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func (m *metricsWithID) IncErrorCounter() {
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m.mw.IncErrorCounter(m.id)
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}
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func (m *metricsWithID) ClearErrorCounter() {
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m.mw.ClearErrorCounter(m.id)
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}
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func (m *metricsWithID) DeleteShardMetrics() {
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m.mw.DeleteShardMetrics(m.id)
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}
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func (m *metricsWithID) SetContainerObjectsCount(cnrID string, objectType string, value uint64) {
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m.mw.SetContainerObjectCounter(m.id, cnrID, objectType, value)
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}
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func (m *metricsWithID) IncContainerObjectsCount(cnrID string, objectType string) {
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m.mw.IncContainerObjectCounter(m.id, cnrID, objectType)
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}
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func (m *metricsWithID) SubContainerObjectsCount(cnrID string, objectType string, value uint64) {
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m.mw.SubContainerObjectCounter(m.id, cnrID, objectType, value)
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}
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// AddShard adds a new shard to the storage engine.
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//
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// Returns any error encountered that did not allow adding a shard.
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// Otherwise returns the ID of the added shard.
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func (e *StorageEngine) AddShard(ctx context.Context, opts ...shard.Option) (*shard.ID, error) {
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sh, err := e.createShard(ctx, opts)
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if err != nil {
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return nil, fmt.Errorf("could not create a shard: %w", err)
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}
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err = e.addShard(sh)
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if err != nil {
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return nil, fmt.Errorf("could not add %s shard: %w", sh.ID().String(), err)
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}
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if e.cfg.metrics != nil {
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e.cfg.metrics.SetMode(sh.ID().String(), sh.GetMode())
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}
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return sh.ID(), nil
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}
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func (e *StorageEngine) createShard(_ context.Context, opts []shard.Option) (*shard.Shard, error) {
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id, err := generateShardID()
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if err != nil {
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return nil, fmt.Errorf("could not generate shard ID: %w", err)
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}
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opts = e.appendMetrics(id, opts)
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sh := shard.New(append(opts,
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shard.WithID(id),
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shard.WithExpiredTombstonesCallback(e.processExpiredTombstones),
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shard.WithExpiredLocksCallback(e.processExpiredLocks),
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shard.WithDeletedLockCallback(e.processDeletedLocks),
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shard.WithReportErrorFunc(e.reportShardErrorBackground),
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shard.WithRebuildWorkerLimiter(e.rebuildLimiter),
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shard.WithZeroSizeCallback(e.processZeroSizeContainers),
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shard.WithZeroCountCallback(e.processZeroCountContainers),
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)...)
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if err := sh.UpdateID(); err != nil {
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e.log.Warn(logs.FailedToUpdateShardID, zap.Stringer("shard_id", sh.ID()), zap.String("metabase_path", sh.DumpInfo().MetaBaseInfo.Path), zap.Error(err))
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}
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return sh, nil
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}
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func (e *StorageEngine) appendMetrics(id *shard.ID, opts []shard.Option) []shard.Option {
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e.mtx.RLock()
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defer e.mtx.RUnlock()
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if e.metrics != nil {
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opts = append(opts,
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shard.WithMetricsWriter(
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&metricsWithID{
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id: id.String(),
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mw: e.metrics,
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},
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),
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shard.WithWriteCacheMetrics(
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&writeCacheMetrics{
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shardID: id.String(),
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metrics: e.metrics.WriteCache(),
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},
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),
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shard.WithGCMetrics(
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&gcMetrics{
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storage: e.metrics.GC(),
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shardID: id.String(),
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},
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),
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)
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}
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return opts
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}
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func (e *StorageEngine) addShard(sh *shard.Shard) error {
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e.mtx.Lock()
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defer e.mtx.Unlock()
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pool, err := ants.NewPool(int(e.shardPoolSize), ants.WithNonblocking(true))
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if err != nil {
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return fmt.Errorf("could not create pool: %w", err)
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}
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strID := sh.ID().String()
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if _, ok := e.shards[strID]; ok {
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return fmt.Errorf("shard with id %s was already added", strID)
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}
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e.shards[strID] = hashedShard{
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shardWrapper: shardWrapper{
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errorCount: new(atomic.Uint32),
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Shard: sh,
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},
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hash: hrw.StringHash(strID),
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}
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e.shardPools[strID] = pool
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return nil
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}
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// removeShards removes specified shards. Skips non-existent shards.
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// Logs errors about shards that it could not Close after the removal.
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func (e *StorageEngine) removeShards(ids ...string) {
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if len(ids) == 0 {
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return
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}
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ss := make([]hashedShard, 0, len(ids))
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e.mtx.Lock()
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for _, id := range ids {
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sh, found := e.shards[id]
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if !found {
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continue
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}
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sh.DeleteShardMetrics()
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ss = append(ss, sh)
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delete(e.shards, id)
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pool, ok := e.shardPools[id]
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if ok {
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pool.Release()
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delete(e.shardPools, id)
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}
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e.log.Info(logs.EngineShardHasBeenRemoved,
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zap.String("id", id))
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}
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e.mtx.Unlock()
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for _, sh := range ss {
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err := sh.SetMode(mode.Disabled)
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if err != nil {
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e.log.Error(logs.EngineCouldNotChangeShardModeToDisabled,
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zap.Stringer("id", sh.ID()),
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zap.Error(err),
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)
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}
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err = sh.Close()
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if err != nil {
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e.log.Error(logs.EngineCouldNotCloseRemovedShard,
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zap.Stringer("id", sh.ID()),
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zap.Error(err),
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)
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}
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}
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}
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func generateShardID() (*shard.ID, error) {
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uid, err := uuid.NewRandom()
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if err != nil {
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return nil, err
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}
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bin, err := uid.MarshalBinary()
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if err != nil {
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return nil, err
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}
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return shard.NewIDFromBytes(bin), nil
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}
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func (e *StorageEngine) sortShards(objAddr interface{ EncodeToString() string }) []hashedShard {
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e.mtx.RLock()
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defer e.mtx.RUnlock()
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h := hrw.StringHash(objAddr.EncodeToString())
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shards := make([]hashedShard, 0, len(e.shards))
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for _, sh := range e.shards {
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shards = append(shards, hashedShard(sh))
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}
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hrw.SortHasherSliceByValue(shards, h)
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return shards
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}
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func (e *StorageEngine) unsortedShards() []hashedShard {
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e.mtx.RLock()
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defer e.mtx.RUnlock()
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shards := make([]hashedShard, 0, len(e.shards))
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for _, sh := range e.shards {
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shards = append(shards, hashedShard(sh))
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}
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return shards
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}
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func (e *StorageEngine) iterateOverSortedShards(addr oid.Address, handler func(int, hashedShard) (stop bool)) {
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for i, sh := range e.sortShards(addr) {
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if handler(i, sh) {
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break
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}
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}
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}
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func (e *StorageEngine) iterateOverUnsortedShards(handler func(hashedShard) (stop bool)) {
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for _, sh := range e.unsortedShards() {
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if handler(sh) {
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break
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}
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}
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}
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// SetShardMode sets mode of the shard with provided identifier.
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//
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// Returns an error if shard mode was not set, or shard was not found in storage engine.
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func (e *StorageEngine) SetShardMode(id *shard.ID, m mode.Mode, resetErrorCounter bool) error {
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e.mtx.RLock()
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defer e.mtx.RUnlock()
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for shID, sh := range e.shards {
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if id.String() == shID {
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if resetErrorCounter {
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sh.errorCount.Store(0)
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sh.Shard.ClearErrorCounter()
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}
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return sh.SetMode(m)
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}
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}
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return errShardNotFound
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}
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// HandleNewEpoch notifies every shard about NewEpoch event.
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func (e *StorageEngine) HandleNewEpoch(ctx context.Context, epoch uint64) {
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ev := shard.EventNewEpoch(epoch)
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e.mtx.RLock()
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defer e.mtx.RUnlock()
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for _, sh := range e.shards {
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select {
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case <-ctx.Done():
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return
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case sh.NotificationChannel() <- ev:
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}
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}
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}
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func (e *StorageEngine) DetachShards(ids []*shard.ID) error {
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if len(ids) == 0 {
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return logicerr.New("ids must be non-empty")
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}
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deletedShards, err := e.deleteShards(ids)
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if err != nil {
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return err
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}
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return e.closeShards(deletedShards)
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}
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// closeShards closes deleted shards. Tries to close all shards.
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// Returns single error with joined shard errors.
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func (e *StorageEngine) closeShards(deletedShards []hashedShard) error {
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var multiErr error
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var multiErrGuard sync.Mutex
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var eg errgroup.Group
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for _, sh := range deletedShards {
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sh := sh
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eg.Go(func() error {
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err := sh.SetMode(mode.Disabled)
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if err != nil {
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e.log.Error(logs.EngineCouldNotChangeShardModeToDisabled,
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zap.Stringer("id", sh.ID()),
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zap.Error(err),
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)
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multiErrGuard.Lock()
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multiErr = errors.Join(multiErr, fmt.Errorf("could not change shard (id:%s) mode to disabled: %w", sh.ID(), err))
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multiErrGuard.Unlock()
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}
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err = sh.Close()
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if err != nil {
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e.log.Error(logs.EngineCouldNotCloseRemovedShard,
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zap.Stringer("id", sh.ID()),
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zap.Error(err),
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)
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multiErrGuard.Lock()
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multiErr = errors.Join(multiErr, fmt.Errorf("could not close removed shard (id:%s): %w", sh.ID(), err))
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multiErrGuard.Unlock()
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}
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return nil
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})
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}
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if err := eg.Wait(); err != nil {
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return err
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}
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return multiErr
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}
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// deleteShards deletes shards with specified ids from engine shard list
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// and releases all engine resources associated with shards.
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// Returns deleted shards or error if some shard could not be deleted.
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func (e *StorageEngine) deleteShards(ids []*shard.ID) ([]hashedShard, error) {
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ss := make([]hashedShard, 0, len(ids))
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e.mtx.Lock()
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defer e.mtx.Unlock()
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for _, id := range ids {
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idStr := id.String()
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sh, found := e.shards[idStr]
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if !found {
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return nil, errShardNotFound
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}
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ss = append(ss, sh)
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}
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if len(ss) == len(e.shards) {
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return nil, logicerr.New("could not delete all the shards")
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}
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for _, sh := range ss {
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idStr := sh.ID().String()
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sh.DeleteShardMetrics()
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delete(e.shards, idStr)
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pool, ok := e.shardPools[idStr]
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if ok {
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pool.Release()
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delete(e.shardPools, idStr)
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}
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e.log.Info(logs.EngineShardHasBeenRemoved,
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zap.String("id", idStr))
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}
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return ss, nil
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}
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func (s hashedShard) Hash() uint64 {
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return s.hash
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}
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