storj/satellite/audit/pathcollector.go
Egon Elbre 6615ecc9b6 common: separate repository
Change-Id: Ibb89c42060450e3839481a7e495bbe3ad940610a
2019-12-27 14:11:15 +02:00

55 lines
1.7 KiB
Go

// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package audit
import (
"context"
"math/rand"
"storj.io/common/pb"
"storj.io/common/storj"
"storj.io/storj/satellite/metainfo"
)
var _ metainfo.Observer = (*PathCollector)(nil)
// PathCollector uses the metainfo loop to add paths to node reservoirs
//
// architecture: Observer
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 metainfo.ScopedPath, 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.Raw)
}
return nil
}
// Object returns nil because the audit service does not interact with objects
func (collector *PathCollector) Object(ctx context.Context, path metainfo.ScopedPath, 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 metainfo.ScopedPath, pointer *pb.Pointer) (err error) {
return nil
}