forked from TrueCloudLab/frostfs-node
77 lines
2.5 KiB
Go
77 lines
2.5 KiB
Go
package eigentrustcalc
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import (
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"context"
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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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)
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type Context interface {
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context.Context
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// Must return epoch number to select the values
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// for global trust calculation.
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Epoch() uint64
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// Must return the sequence number of the iteration.
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I() uint32
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}
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// InitialTrustSource must provide initial(non-calculated)
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// trusts to current node's daughter. Realization may depends
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// on daughter.
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type InitialTrustSource interface {
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InitialTrust(reputation.PeerID) (reputation.TrustValue, error)
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}
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// TrustIterator must iterate over all retrieved(or calculated) trusts
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// and call passed TrustHandler on them.
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type TrustIterator interface {
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Iterate(reputation.TrustHandler) error
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}
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type PeerTrustsHandler func(reputation.PeerID, TrustIterator) error
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// PeerTrustsIterator must iterate over all nodes(PeerIDs) and provide
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// TrustIterator for iteration over node's Trusts to others peers.
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type PeerTrustsIterator interface {
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Iterate(PeerTrustsHandler) error
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}
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type DaughterTrustIteratorProvider interface {
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// InitDaughterIterator must init TrustIterator
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// that iterates over received local trusts from
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// daughter p for ctx.Epoch() epoch.
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InitDaughterIterator(ctx Context, p reputation.PeerID) (TrustIterator, error)
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// InitAllDaughtersIterator must init PeerTrustsIterator
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// that must iterate over all daughters of the current
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// node(manager) and all trusts received from them for
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// ctx.Epoch() epoch.
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InitAllDaughtersIterator(ctx Context) (PeerTrustsIterator, error)
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// InitConsumersIterator must init PeerTrustsIterator
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// that must iterate over all daughters of the current
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// node(manager) and their consumers' trusts received
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// from other managers for ctx.Epoch() epoch and
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// ctx.I() iteration.
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InitConsumersIterator(Context) (PeerTrustsIterator, error)
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}
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// IntermediateWriter must write intermediate result to contract.
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// It may depends on realization either trust is sent directly to contract
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// or via redirecting to other node.
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type IntermediateWriter interface {
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WriteIntermediateTrust(eigentrust.IterationTrust) error
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}
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// IntermediateWriterProvider must provide ready-to-work
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// IntermediateWriter.
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type IntermediateWriterProvider interface {
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InitIntermediateWriter(Context) (IntermediateWriter, error)
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}
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// AlphaProvider must provide information about required
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// alpha parameter for eigen trust algorithm.
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type AlphaProvider interface {
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EigenTrustAlpha() (float64, error)
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}
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