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node_check.go
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node_check.go
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// Copyright (C) 2022 Storj Labs, Inc.
// See LICENSE for copying information.
package main
import (
"context"
"fmt"
"time"
"github.com/spf13/cobra"
"github.com/zeebo/errs"
"go.uber.org/zap"
"storj.io/common/uuid"
"storj.io/private/process"
"storj.io/storj/satellite/metabase"
"storj.io/storj/satellite/nodeselection"
"storj.io/storj/satellite/overlay"
"storj.io/storj/satellite/satellitedb"
)
func verifySegmentsNodeCheck(cmd *cobra.Command, args []string) error {
ctx, _ := process.Ctx(cmd)
log := zap.L()
// open default satellite database
db, err := satellitedb.Open(ctx, log.Named("db"), satelliteCfg.Database, satellitedb.Options{
ApplicationName: "segment-verify",
SaveRollupBatchSize: satelliteCfg.Tally.SaveRollupBatchSize,
ReadRollupBatchSize: satelliteCfg.Tally.ReadRollupBatchSize,
})
if err != nil {
return errs.New("Error starting master database on satellite: %+v", err)
}
defer func() {
err = errs.Combine(err, db.Close())
}()
// open metabase
metabaseDB, err := metabase.Open(ctx, log.Named("metabase"), satelliteCfg.Metainfo.DatabaseURL,
satelliteCfg.Config.Metainfo.Metabase("satellite-core"))
if err != nil {
return Error.Wrap(err)
}
defer func() { _ = metabaseDB.Close() }()
// check whether satellite and metabase versions match
versionErr := db.CheckVersion(ctx)
if versionErr != nil {
log.Error("versions skewed", zap.Error(versionErr))
return Error.Wrap(versionErr)
}
versionErr = metabaseDB.CheckVersion(ctx)
if versionErr != nil {
log.Error("versions skewed", zap.Error(versionErr))
return Error.Wrap(versionErr)
}
service, err := NewNodeCheckService(log, metabaseDB, db.OverlayCache(), nodeCheckCfg)
if err != nil {
return Error.Wrap(err)
}
defer func() { err = errs.Combine(err, service.Close()) }()
return service.ProcessAll(ctx)
}
// NodeCheckConfig defines configuration for verifying segment existence.
type NodeCheckConfig struct {
BatchSize int `help:"number of segments to process per batch" default:"10000"`
DuplicatesLimit int `help:"maximum duplicates allowed" default:"3"`
UnvettedLimit int `help:"maximum unvetted allowed" default:"9"`
IncludeAllNodes bool `help:"include disqualified and exited nodes in the node check" default:"false"`
AsOfSystemInterval time.Duration `help:"as of system interval" releaseDefault:"-5m" devDefault:"-1us" testDefault:"-1us"`
}
// NodeCheckOverlayDB contains dependencies from overlay that are needed for the processing.
type NodeCheckOverlayDB interface {
IterateAllContactedNodes(context.Context, func(context.Context, *nodeselection.SelectedNode) error) error
IterateAllNodeDossiers(context.Context, func(context.Context, *overlay.NodeDossier) error) error
}
// NodeCheckService implements a service for checking duplicate nets being used in a segment.
type NodeCheckService struct {
log *zap.Logger
config NodeCheckConfig
metabase Metabase
overlay NodeCheckOverlayDB
// lookup tables for nodes
aliasMap *metabase.NodeAliasMap
// alias table for lastNet lookups
netAlias map[string]netAlias
nodeInfoByNetAlias map[metabase.NodeAlias]nodeInfo
// table for converting a node alias to a net alias
nodeAliasToNetAlias []netAlias
scratch bitset
}
// netAlias represents a unique ID for a given subnet.
type netAlias int
type nodeInfo struct {
vetted bool
disqualified bool
exited bool
}
// NewNodeCheckService returns a new service for verifying segments.
func NewNodeCheckService(log *zap.Logger, metabaseDB Metabase, overlay NodeCheckOverlayDB, config NodeCheckConfig) (*NodeCheckService, error) {
return &NodeCheckService{
log: log,
config: config,
metabase: metabaseDB,
overlay: overlay,
}, nil
}
// Close closes the service.
func (service *NodeCheckService) Close() (err error) {
return nil
}
// init sets up tables for quick verification.
func (service *NodeCheckService) init(ctx context.Context) (err error) {
defer mon.Task()(&ctx)(&err)
service.aliasMap, err = service.metabase.LatestNodesAliasMap(ctx)
if err != nil {
return Error.Wrap(err)
}
service.netAlias = make(map[string]netAlias)
service.nodeInfoByNetAlias = make(map[metabase.NodeAlias]nodeInfo)
service.nodeAliasToNetAlias = make([]netAlias, service.aliasMap.Max()+1)
err = service.overlay.IterateAllNodeDossiers(ctx, func(ctx context.Context, node *overlay.NodeDossier) error {
nodeAlias, ok := service.aliasMap.Alias(node.Id)
if !ok {
// some nodes aren't in the metabase
return nil
}
// assign unique ID-s for all nets
net := node.LastNet
alias, ok := service.netAlias[net]
if !ok {
alias = netAlias(len(service.netAlias))
service.netAlias[net] = alias
}
nodeInfo := nodeInfo{
vetted: node.Reputation.Status.VettedAt != nil,
disqualified: node.Reputation.Status.Disqualified != nil,
exited: node.ExitStatus.ExitFinishedAt != nil,
}
service.nodeInfoByNetAlias[nodeAlias] = nodeInfo
service.nodeAliasToNetAlias[nodeAlias] = alias
return nil
})
if err != nil {
return Error.Wrap(err)
}
service.scratch = newBitSet(len(service.netAlias))
return nil
}
// ProcessAll processes all segments with the specified batchSize.
func (service *NodeCheckService) ProcessAll(ctx context.Context) (err error) {
defer mon.Task()(&ctx)(&err)
if err := service.init(ctx); err != nil {
return Error.Wrap(err)
}
var cursorStreamID uuid.UUID
var cursorPosition metabase.SegmentPosition
var progress int64
for {
result, err := service.metabase.ListVerifySegments(ctx, metabase.ListVerifySegments{
CursorStreamID: cursorStreamID,
CursorPosition: cursorPosition,
Limit: service.config.BatchSize,
AsOfSystemInterval: service.config.AsOfSystemInterval,
})
if err != nil {
return Error.Wrap(err)
}
segments := result.Segments
// All done?
if len(segments) == 0 {
return nil
}
last := &segments[len(segments)-1]
cursorStreamID, cursorPosition = last.StreamID, last.Position
service.log.Info("processing segments",
zap.Int64("progress", progress),
zap.Int("count", len(segments)),
zap.Stringer("first", segments[0].StreamID),
zap.Stringer("last", segments[len(segments)-1].StreamID),
)
progress += int64(len(segments))
// Process the data.
for _, segment := range segments {
if err := service.Verify(ctx, segment); err != nil {
service.log.Warn("found",
zap.Stringer("stream-id", segment.StreamID),
zap.Uint64("position", segment.Position.Encode()),
zap.Error(err))
}
}
}
}
// Verify verifies a single segment.
func (service *NodeCheckService) Verify(ctx context.Context, segment metabase.VerifySegment) (err error) {
// intentionally no monitoring for performance
scratch := service.scratch
scratch.Clear()
count := 0
unvetted := 0
for _, alias := range segment.AliasPieces {
if alias.Alias >= metabase.NodeAlias(len(service.nodeAliasToNetAlias)) {
continue
}
nodeInfo := service.nodeInfoByNetAlias[alias.Alias]
if !service.config.IncludeAllNodes &&
(nodeInfo.disqualified || nodeInfo.exited) {
continue
}
if !nodeInfo.vetted {
unvetted++
}
netAlias := service.nodeAliasToNetAlias[alias.Alias]
if scratch.Include(int(netAlias)) {
count++
}
}
if count > service.config.DuplicatesLimit || unvetted > service.config.UnvettedLimit {
fmt.Printf("%s\t%d\t%d\t%d\t%v\t%v\n", segment.StreamID, segment.Position.Encode(), count, unvetted, segment.CreatedAt, segment.RepairedAt)
}
return nil
}
type bitset []uint32
func newBitSet(size int) bitset {
return bitset(make([]uint32, (size+31)/32))
}
func (set bitset) offset(index int) (bucket, bitmask uint32) {
return uint32(index / 32), uint32(1 << (index % 32))
}
func (set bitset) Include(index int) bool {
bucket, bitmask := set.offset(index)
had := set[bucket]&bitmask != 0
set[bucket] |= bitmask
return had
}
func (set bitset) Clear() {
for i := range set {
set[i] = 0
}
}