frostfs-node/pkg/services/reputation/eigentrust/controller/deps.go
Pavel Karpy 2c8c9f69c8 [] storage/calculator: Make alpha dynamic
Delete reading `alpha` from env var. Cover
retrieving `alpha` behind interface in
intermediate calculator. Add TODO to decide
if it is necessary to receive that param from
global config or not.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
2021-05-04 17:53:02 +03:00

41 lines
1.1 KiB
Go

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 provide information about numbers
// of iterations for algorithm.
type IterationsProvider interface {
EigenTrustIterations() (uint64, error)
}