58033a3adc
This function allows to shuffle prepared container nodes according to HRW weights from network map. Signed-off-by: Alex Vanin <alexey@nspcc.ru>
60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package placement
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import (
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netmapSDK "github.com/nspcc-dev/neofs-api-go/pkg/netmap"
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"github.com/nspcc-dev/neofs-api-go/pkg/object"
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"github.com/nspcc-dev/neofs-node/pkg/core/netmap"
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"github.com/pkg/errors"
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)
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type netMapBuilder struct {
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nmSrc netmap.Source
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}
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type netMapSrc struct {
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nm *netmapSDK.Netmap
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}
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func NewNetworkMapBuilder(nm *netmapSDK.Netmap) Builder {
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return &netMapBuilder{
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nmSrc: &netMapSrc{nm},
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}
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}
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func NewNetworkMapSourceBuilder(nmSrc netmap.Source) Builder {
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return &netMapBuilder{
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nmSrc: nmSrc,
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}
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}
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func (s *netMapSrc) GetNetMap(diff uint64) (*netmapSDK.Netmap, error) {
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return s.nm, nil
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}
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func (b *netMapBuilder) BuildPlacement(a *object.Address, p *netmapSDK.PlacementPolicy) ([]netmapSDK.Nodes, error) {
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nm, err := netmap.GetLatestNetworkMap(b.nmSrc)
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if err != nil {
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return nil, errors.Wrap(err, "could not get network map")
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}
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cn, err := nm.GetContainerNodes(p, a.ContainerID().ToV2().GetValue())
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if err != nil {
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return nil, errors.Wrap(err, "could not get container nodes")
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}
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return BuildObjectPlacement(nm, cn, a.ObjectID())
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}
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func BuildObjectPlacement(nm *netmapSDK.Netmap, cnrNodes netmapSDK.ContainerNodes, id *object.ID) ([]netmapSDK.Nodes, error) {
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objectID := id.ToV2()
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if objectID == nil {
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return cnrNodes.Replicas(), nil
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}
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on, err := nm.GetPlacementVectors(cnrNodes, objectID.GetValue())
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if err != nil {
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return nil, errors.Wrap(err, "could not get placement vectors for object")
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}
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return on, nil
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}
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