92a2be2abd
As part of the Metainfo Refactoring, we need to make the Metainfo Loop working with both the current PointerDB and the new Metabase. Thus, the Metainfo Loop should pass to the Observer interface more specific Object and Segment types instead of pb.Pointer. After this change, there are still a couple of use cases that require access to the pb.Pointer (hence we have it as a field in the metainfo.Segment type): 1. Expired Deletion Service 2. Repair Service It would require additional refactoring in these two services before we are able to clean this. Change-Id: Ib3eb6b7507ed89d5ba745ffbb6b37524ef10ed9f
86 lines
2.7 KiB
Go
86 lines
2.7 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package gc
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import (
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"context"
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"time"
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"go.uber.org/zap"
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"storj.io/common/bloomfilter"
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"storj.io/common/memory"
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"storj.io/common/storj"
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"storj.io/storj/satellite/metainfo"
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)
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var _ metainfo.Observer = (*PieceTracker)(nil)
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// PieceTracker implements the metainfo loop observer interface for garbage collection
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//
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// architecture: Observer
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type PieceTracker struct {
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log *zap.Logger
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config Config
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creationDate time.Time
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// TODO: should we use int or int64 consistently for piece count (db type is int64)?
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pieceCounts map[storj.NodeID]int
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retainInfos map[storj.NodeID]*RetainInfo
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}
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// NewPieceTracker instantiates a new gc piece tracker to be subscribed to the metainfo loop.
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func NewPieceTracker(log *zap.Logger, config Config, pieceCounts map[storj.NodeID]int) *PieceTracker {
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return &PieceTracker{
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log: log,
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config: config,
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creationDate: time.Now().UTC(),
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pieceCounts: pieceCounts,
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retainInfos: make(map[storj.NodeID]*RetainInfo),
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}
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}
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// RemoteSegment takes a remote segment found in metainfo and adds pieces to bloom filters.
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func (pieceTracker *PieceTracker) RemoteSegment(ctx context.Context, segment *metainfo.Segment) (err error) {
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defer mon.Task()(&ctx)(&err)
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for _, piece := range segment.Pieces {
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pieceID := segment.RootPieceID.Derive(piece.StorageNode, int32(piece.Number))
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pieceTracker.add(piece.StorageNode, pieceID)
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}
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return nil
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}
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// Object returns nil because gc does not interact with remote objects.
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func (pieceTracker *PieceTracker) Object(ctx context.Context, object *metainfo.Object) (err error) {
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return nil
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}
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// InlineSegment returns nil because we're only doing gc for storage nodes for now.
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func (pieceTracker *PieceTracker) InlineSegment(ctx context.Context, segment *metainfo.Segment) (err error) {
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return nil
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}
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// adds a pieceID to the relevant node's RetainInfo.
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func (pieceTracker *PieceTracker) add(nodeID storj.NodeID, pieceID storj.PieceID) {
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if _, ok := pieceTracker.retainInfos[nodeID]; !ok {
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// If we know how many pieces a node should be storing, use that number. Otherwise use default.
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numPieces := pieceTracker.config.InitialPieces
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if pieceTracker.pieceCounts[nodeID] > 0 {
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numPieces = pieceTracker.pieceCounts[nodeID]
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}
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// limit size of bloom filter to ensure we are under the limit for RPC
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filter := bloomfilter.NewOptimalMaxSize(numPieces, pieceTracker.config.FalsePositiveRate, 2*memory.MiB)
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pieceTracker.retainInfos[nodeID] = &RetainInfo{
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Filter: filter,
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CreationDate: pieceTracker.creationDate,
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}
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}
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pieceTracker.retainInfos[nodeID].Filter.Add(pieceID)
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pieceTracker.retainInfos[nodeID].Count++
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}
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