70 lines
1.7 KiB
Go
70 lines
1.7 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package nodestats
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import (
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"context"
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"github.com/zeebo/errs"
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"go.uber.org/zap"
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"gopkg.in/spacemonkeygo/monkit.v2"
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"storj.io/storj/pkg/identity"
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"storj.io/storj/pkg/overlay"
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"storj.io/storj/pkg/pb"
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)
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var (
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// NodeStatsEndpointErr is endpoint error class
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NodeStatsEndpointErr = errs.Class("node stats endpoint error")
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mon = monkit.Package()
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)
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// Endpoint for querying node stats for the SNO
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type Endpoint struct {
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log *zap.Logger
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overlay overlay.DB
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}
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// NewEndpoint creates new endpoint
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func NewEndpoint(log *zap.Logger, overlay overlay.DB) *Endpoint {
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return &Endpoint{
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log: log,
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overlay: overlay,
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}
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}
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// UptimeCheck returns uptime checks information for client node
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func (e *Endpoint) UptimeCheck(ctx context.Context, req *pb.UptimeCheckRequest) (_ *pb.UptimeCheckResponse, err error) {
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defer mon.Task()(&ctx)(&err)
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peer, err := identity.PeerIdentityFromContext(ctx)
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if err != nil {
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return nil, NodeStatsEndpointErr.Wrap(err)
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}
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node, err := e.overlay.Get(ctx, peer.ID)
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if err != nil {
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return nil, NodeStatsEndpointErr.Wrap(err)
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}
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reputationScore := calculateUptimeReputationScore(
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node.Reputation.UptimeReputationAlpha,
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node.Reputation.UptimeReputationBeta)
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return &pb.UptimeCheckResponse{
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TotalCount: node.Reputation.UptimeCount,
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SuccessCount: node.Reputation.UptimeSuccessCount,
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ReputationAlpha: node.Reputation.UptimeReputationAlpha,
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ReputationBeta: node.Reputation.UptimeReputationBeta,
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ReputationScore: reputationScore,
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}, nil
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}
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// calculateUptimeReputationScore is helper method to calculate reputation value for uptime checks
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func calculateUptimeReputationScore(alpha, beta float64) float64 {
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return alpha / (alpha + beta)
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}
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