frostfs-node/pkg/local_object_storage/blobovnicza/exists.go

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package blobovnicza
import (
"context"
"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"go.etcd.io/bbolt"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/trace"
)
// Exists check if object with the specified address is stored in b.
func (b *Blobovnicza) Exists(ctx context.Context, addr oid.Address) (bool, error) {
exists := false
_, span := tracing.StartSpanFromContext(ctx, "Blobovnicza.Exists",
trace.WithAttributes(
attribute.String("path", b.path),
attribute.String("address", addr.EncodeToString()),
))
defer span.End()
addrKey := addressKey(addr)
err := b.boltDB.View(func(tx *bbolt.Tx) error {
return tx.ForEach(func(_ []byte, buck *bbolt.Bucket) error {
exists = buck.Get(addrKey) != nil
if exists {
return errInterruptForEach
}
return nil
})
})
if err == errInterruptForEach {
err = nil
}
return exists, err
}