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pathcollector.go
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pathcollector.go
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// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package audit
import (
"context"
"math/rand"
"storj.io/storj/pkg/pb"
"storj.io/storj/pkg/storj"
)
// PathCollector uses the metainfo loop to add paths to node reservoirs
type PathCollector struct {
Reservoirs map[storj.NodeID]*Reservoir
slotCount int
rand *rand.Rand
}
// NewPathCollector instantiates a path collector
func NewPathCollector(reservoirSlots int, r *rand.Rand) *PathCollector {
return &PathCollector{
Reservoirs: make(map[storj.NodeID]*Reservoir),
slotCount: reservoirSlots,
rand: r,
}
}
// RemoteSegment takes a remote segment found in metainfo and creates a reservoir for it if it doesn't exist already
func (collector *PathCollector) RemoteSegment(ctx context.Context, path storj.Path, pointer *pb.Pointer) (err error) {
for _, piece := range pointer.GetRemote().GetRemotePieces() {
if _, ok := collector.Reservoirs[piece.NodeId]; !ok {
collector.Reservoirs[piece.NodeId] = NewReservoir(collector.slotCount)
}
collector.Reservoirs[piece.NodeId].Sample(collector.rand, path)
}
return nil
}
// RemoteObject returns nil because the audit service does not interact with remote objects
func (collector *PathCollector) RemoteObject(ctx context.Context, path storj.Path, pointer *pb.Pointer) (err error) {
return nil
}
// InlineSegment returns nil because we're only auditing for storage nodes for now
func (collector *PathCollector) InlineSegment(ctx context.Context, path storj.Path, pointer *pb.Pointer) (err error) {
return nil
}