forked from TrueCloudLab/frostfs-node
56 lines
1.8 KiB
Go
56 lines
1.8 KiB
Go
package intermediate
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import (
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"errors"
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"fmt"
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"github.com/nspcc-dev/neofs-node/pkg/core/netmap"
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"github.com/nspcc-dev/neofs-node/pkg/services/reputation"
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"github.com/nspcc-dev/neofs-node/pkg/services/reputation/eigentrust"
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eigencalc "github.com/nspcc-dev/neofs-node/pkg/services/reputation/eigentrust/calculator"
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eigentrustctrl "github.com/nspcc-dev/neofs-node/pkg/services/reputation/eigentrust/controller"
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apireputation "github.com/nspcc-dev/neofs-sdk-go/reputation"
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)
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// InitialTrustSource is an implementation of the
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// reputation/eigentrust/calculator's InitialTrustSource interface.
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type InitialTrustSource struct {
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NetMap netmap.Source
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}
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var ErrEmptyNetMap = errors.New("empty NepMap")
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// InitialTrust returns `initialTrust` as an initial trust value.
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func (i InitialTrustSource) InitialTrust(apireputation.PeerID) (reputation.TrustValue, error) {
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nm, err := i.NetMap.GetNetMap(1)
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if err != nil {
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return reputation.TrustZero, fmt.Errorf("failed to get NetMap: %w", err)
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}
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nodeCount := reputation.TrustValueFromFloat64(float64(len(nm.Nodes())))
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if nodeCount == 0 {
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return reputation.TrustZero, ErrEmptyNetMap
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}
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return reputation.TrustOne.Div(nodeCount), nil
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}
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// DaughtersTrustCalculator wraps EigenTrust calculator and implements the
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// eigentrust/calculator's DaughtersTrustCalculator interface.
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type DaughtersTrustCalculator struct {
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Calculator *eigencalc.Calculator
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}
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// Calculate converts and passes values to the wrapped calculator.
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func (c *DaughtersTrustCalculator) Calculate(ctx eigentrustctrl.IterationContext) {
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calcPrm := eigencalc.CalculatePrm{}
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epochIteration := eigentrust.EpochIteration{}
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epochIteration.SetEpoch(ctx.Epoch())
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epochIteration.SetI(ctx.I())
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calcPrm.SetLast(ctx.Last())
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calcPrm.SetEpochIteration(epochIteration)
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c.Calculator.Calculate(calcPrm)
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}
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