forked from TrueCloudLab/frostfs-node
37 lines
1 KiB
Go
37 lines
1 KiB
Go
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package placementrouter
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import (
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"github.com/nspcc-dev/neofs-api-go/pkg/container"
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loadroute "github.com/nspcc-dev/neofs-node/pkg/services/container/announcement/load/route"
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"github.com/pkg/errors"
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)
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// NextStage composes container nodes for the container and epoch from a,
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// and returns the list of nodes with maximum weight (one from each vector).
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//
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// If passed route has more than one point, then endpoint of the route is reached.
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//
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// The traversed route is not checked, it is assumed to be correct.
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func (b *Builder) NextStage(a container.UsedSpaceAnnouncement, passed []loadroute.ServerInfo) ([]loadroute.ServerInfo, error) {
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if len(passed) > 1 {
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return nil, nil
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}
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placement, err := b.placementBuilder.BuildPlacement(a.Epoch(), a.ContainerID())
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if err != nil {
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return nil, errors.Wrapf(err, "could not build placement %s", a.ContainerID())
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}
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res := make([]loadroute.ServerInfo, 0, len(placement))
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for i := range placement {
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if len(placement[i]) == 0 {
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continue
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}
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res = append(res, placement[i][0])
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}
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return res, nil
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}
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