frostfs-node/pkg/local_object_storage/shard/lock.go

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package shard
import (
"context"
"fmt"
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/pkg/tracing"
meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/trace"
)
// Lock marks objects as locked with another object. All objects from the
// specified container.
//
// Allows locking regular objects only (otherwise returns apistatus.LockNonRegularObject).
//
// Locked list should be unique. Panics if it is empty.
func (s *Shard) Lock(ctx context.Context, idCnr cid.ID, locker oid.ID, locked []oid.ID) error {
ctx, span := tracing.StartSpanFromContext(ctx, "Shard.Lock",
trace.WithAttributes(
attribute.String("shard_id", s.ID().String()),
attribute.String("container_id", idCnr.EncodeToString()),
attribute.String("locker", locker.EncodeToString()),
attribute.Int("locked_count", len(locked)),
))
defer span.End()
s.m.RLock()
defer s.m.RUnlock()
m := s.info.Mode
if m.ReadOnly() {
return ErrReadOnlyMode
} else if m.NoMetabase() {
return ErrDegradedMode
}
err := s.metaBase.Lock(ctx, idCnr, locker, locked)
if err != nil {
return fmt.Errorf("metabase lock: %w", err)
}
return nil
}
// IsLocked checks object locking relation of the provided object. Not found object is
// considered as not locked. Requires healthy metabase, returns ErrDegradedMode otherwise.
func (s *Shard) IsLocked(ctx context.Context, addr oid.Address) (bool, error) {
ctx, span := tracing.StartSpanFromContext(ctx, "Shard.IsLocked",
trace.WithAttributes(
attribute.String("shard_id", s.ID().String()),
attribute.String("address", addr.EncodeToString()),
))
defer span.End()
m := s.GetMode()
if m.NoMetabase() {
return false, ErrDegradedMode
}
var prm meta.IsLockedPrm
prm.SetAddress(addr)
res, err := s.metaBase.IsLocked(ctx, prm)
if err != nil {
return false, err
}
return res.Locked(), nil
}