frostfs-node/pkg/services/reputation/eigentrust/controller/deps.go

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package eigentrustctrl
import (
"context"
)
// IterationContext is a context of the i-th
// stage of iterative EigenTrust algorithm.
type IterationContext interface {
context.Context
// Must return epoch number to select the values
// for global trust calculation.
Epoch() uint64
// Must return the sequence number of the iteration.
I() uint32
// Must return true if I() is the last iteration.
Last() bool
}
// DaughtersTrustCalculator is an interface of entity
// responsible for calculating the global trust of
// daughter nodes in terms of EigenTrust algorithm.
type DaughtersTrustCalculator interface {
// Must perform the iteration step of the loop
// for computing the global trust of all daughter
// nodes and sending intermediate values
// according to EigenTrust description
// http://ilpubs.stanford.edu:8090/562/1/2002-56.pdf Ch.5.1.
//
// Execution should be interrupted if ctx.Last().
Calculate(ctx IterationContext)
}
// IterationsProvider must provides information about numbers
// of iterations for algorithm.
type IterationsProvider interface {
EigenTrustIterations() (uint64, error)
}