frostfs-node/pkg/services/object_manager/placement/netmap.go

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package placement
import (
"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
"github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/pkg/errors"
)
type netMapBuilder struct {
nm *netmap.Netmap
}
func NewNetworkMapBuilder(nm *netmap.Netmap) Builder {
return &netMapBuilder{
nm: nm,
}
}
func (b *netMapBuilder) BuildPlacement(a *object.Address, p *netmap.PlacementPolicy) ([]netmap.Nodes, error) {
aV2 := a.ToV2()
cn, err := b.nm.GetContainerNodes(p, aV2.GetContainerID().GetValue())
if err != nil {
return nil, errors.Wrap(err, "could not get container nodes")
}
oid := aV2.GetObjectID()
if oid == nil {
return cn.Replicas(), nil
}
on, err := b.nm.GetPlacementVectors(cn, oid.GetValue())
if err != nil {
return nil, errors.Wrap(err, "could not get placement vectors for object")
}
return on, nil
}