frostfs-node/pkg/local_object_storage/blobstor/blobovniczatree/exists.go

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package blobovniczatree
import (
"context"
"encoding/hex"
"path/filepath"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobovnicza"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/trace"
"go.uber.org/zap"
)
// Exists implements common.Storage.
func (b *Blobovniczas) Exists(ctx context.Context, prm common.ExistsPrm) (common.ExistsRes, error) {
var (
startedAt = time.Now()
success = false
found = false
)
defer func() {
b.metrics.Exists(time.Since(startedAt), success, prm.StorageID != nil)
}()
ctx, span := tracing.StartSpanFromContext(ctx, "Blobovniczas.Exists",
trace.WithAttributes(
attribute.String("path", b.rootPath),
attribute.String("address", prm.Address.EncodeToString()),
attribute.String("storage_id", hex.EncodeToString(prm.StorageID)),
))
defer span.End()
if prm.StorageID != nil {
id := blobovnicza.NewIDFromBytes(prm.StorageID)
blz, err := b.openBlobovnicza(id.String())
if err != nil {
return common.ExistsRes{}, err
}
exists, err := blz.Exists(ctx, prm.Address)
return common.ExistsRes{Exists: exists}, err
}
activeCache := make(map[string]struct{})
var gPrm blobovnicza.GetPrm
gPrm.SetAddress(prm.Address)
err := b.iterateSortedLeaves(ctx, &prm.Address, func(p string) (bool, error) {
dirPath := filepath.Dir(p)
_, ok := activeCache[dirPath]
_, err := b.getObjectFromLevel(ctx, gPrm, p, !ok)
if err != nil {
if !client.IsErrObjectNotFound(err) {
b.log.Debug(logs.BlobovniczatreeCouldNotGetObjectFromLevel,
zap.String("level", p),
zap.String("error", err.Error()))
}
}
activeCache[dirPath] = struct{}{}
found = err == nil
return found, nil
})
success = err == nil
return common.ExistsRes{Exists: found}, err
}