forked from TrueCloudLab/frostfs-node
63 lines
2 KiB
Go
63 lines
2 KiB
Go
package intermediate
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import (
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"github.com/nspcc-dev/neofs-node/pkg/services/reputation"
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reputationcommon "github.com/nspcc-dev/neofs-node/pkg/services/reputation/common"
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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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consumerstorage "github.com/nspcc-dev/neofs-node/pkg/services/reputation/eigentrust/storage/consumers"
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"github.com/nspcc-dev/neofs-node/pkg/util/logger"
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"go.uber.org/zap"
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)
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var ErrIncorrectContextPanicMsg = "could not write intermediate trust: passed context incorrect"
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// ConsumerStorageWriterProvider is an implementation of the reputation.WriterProvider
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// interface that provides ConsumerTrustWriter writer.
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type ConsumerStorageWriterProvider struct {
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Log *logger.Logger
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Storage *consumerstorage.Storage
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}
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// ConsumerTrustWriter is an implementation of the reputation.Writer interface
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// that writes passed consumer's Trust values to the Consumer storage. After writing
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// that, values can be used in eigenTrust algorithm's iterations.
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type ConsumerTrustWriter struct {
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log *logger.Logger
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storage *consumerstorage.Storage
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eiCtx eigencalc.Context
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}
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func (w *ConsumerTrustWriter) Write(t reputation.Trust) error {
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w.log.Debug("writing received consumer's trusts",
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zap.Uint64("epoch", w.eiCtx.Epoch()),
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zap.Uint32("iteration", w.eiCtx.I()),
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zap.Stringer("trusting_peer", t.TrustingPeer()),
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zap.Stringer("trusted_peer", t.Peer()),
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)
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trust := eigentrust.IterationTrust{Trust: t}
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trust.SetEpoch(w.eiCtx.Epoch())
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trust.SetI(w.eiCtx.I())
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w.storage.Put(trust)
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return nil
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}
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func (w *ConsumerTrustWriter) Close() error {
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return nil
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}
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func (s *ConsumerStorageWriterProvider) InitWriter(ctx reputationcommon.Context) (reputationcommon.Writer, error) {
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eiCtx, ok := ctx.(eigencalc.Context)
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if !ok {
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panic(ErrIncorrectContextPanicMsg)
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}
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return &ConsumerTrustWriter{
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log: s.Log,
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storage: s.Storage,
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eiCtx: eiCtx,
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}, nil
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}
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