storj/satellite/audit/pathcollector.go
Michal Niewrzal 9202295348 satellite/metainfo: replace ScopedPath with metabase.SegmentLocation
Change-Id: I7e89c9e8eaeae58be828a32ad47ed3028501f4c7
2020-09-04 10:06:52 +00:00

58 lines
1.8 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"
"storj.io/storj/satellite/metainfo/metabase"
)
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, location metabase.SegmentLocation, pointer *pb.Pointer) (err error) {
// TODO change Sample to accept SegmentLocation
key := string(location.Encode())
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, key)
}
return nil
}
// Object returns nil because the audit service does not interact with objects.
func (collector *PathCollector) Object(ctx context.Context, location metabase.SegmentLocation, 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, location metabase.SegmentLocation, pointer *pb.Pointer) (err error) {
return nil
}