storj/satellite/audit/service.go

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// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package audit
import (
"context"
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"time"
"github.com/zeebo/errs"
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"go.uber.org/zap"
"storj.io/storj/internal/memory"
"storj.io/storj/internal/sync2"
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"storj.io/storj/pkg/identity"
"storj.io/storj/pkg/storj"
"storj.io/storj/pkg/transport"
"storj.io/storj/satellite/metainfo"
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"storj.io/storj/satellite/orders"
"storj.io/storj/satellite/overlay"
)
// Error is the default audit errs class
var Error = errs.Class("audit error")
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// Config contains configurable values for audit service
type Config struct {
MaxRetriesStatDB int `help:"max number of times to attempt updating a statdb batch" default:"3"`
Interval time.Duration `help:"how frequently segments are audited" default:"30s"`
MinBytesPerSecond memory.Size `help:"the minimum acceptable bytes that storage nodes can transfer per second to the satellite" default:"128B"`
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MinDownloadTimeout time.Duration `help:"the minimum duration for downloading a share from storage nodes before timing out" default:"25s"`
MaxReverifyCount int `help:"limit above which we consider an audit is failed" default:"3"`
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}
// Service helps coordinate Cursor and Verifier to run the audit process continuously
type Service struct {
log *zap.Logger
Cursor *Cursor
Verifier *Verifier
Reporter reporter
Loop sync2.Cycle
}
// NewService instantiates a Service with access to a Cursor and Verifier
func NewService(log *zap.Logger, config Config, metainfo *metainfo.Service,
orders *orders.Service, transport transport.Client, overlay *overlay.Service,
containment Containment, identity *identity.FullIdentity) (*Service, error) {
return &Service{
log: log,
Cursor: NewCursor(metainfo),
Verifier: NewVerifier(log.Named("audit:verifier"), metainfo, transport, overlay, containment, orders, identity, config.MinBytesPerSecond, config.MinDownloadTimeout),
Reporter: NewReporter(log.Named("audit:reporter"), overlay, containment, config.MaxRetriesStatDB, int32(config.MaxReverifyCount)),
Loop: *sync2.NewCycle(config.Interval),
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}, nil
}
// Run runs auditing service
func (service *Service) Run(ctx context.Context) (err error) {
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defer mon.Task()(&ctx)(&err)
service.log.Info("Audit cron is starting up")
return service.Loop.Run(ctx, func(ctx context.Context) error {
err := service.process(ctx)
if err != nil {
service.log.Error("process", zap.Error(err))
}
return nil
})
}
// Close halts the audit loop
func (service *Service) Close() error {
service.Loop.Close()
return nil
}
// process picks a random stripe and verifies correctness
func (service *Service) process(ctx context.Context) (err error) {
defer mon.Task()(&ctx)(&err)
var stripe *Stripe
for {
s, more, err := service.Cursor.NextStripe(ctx)
if err != nil {
return err
}
if s != nil {
stripe = s
break
}
if !more {
return nil
}
}
var errlist errs.Group
report, err := service.Verifier.Reverify(ctx, stripe)
if err != nil {
errlist.Add(err)
}
// TODO(moby) we need to decide if we want to do something with nodes that the reporter failed to update
_, err = service.Reporter.RecordAudits(ctx, report)
if err != nil {
errlist.Add(err)
}
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// skip all reverified nodes in the next Verify step
skip := make(map[storj.NodeID]bool)
if report != nil {
for _, nodeID := range report.Successes {
skip[nodeID] = true
}
for _, nodeID := range report.Offlines {
skip[nodeID] = true
}
for _, nodeID := range report.Fails {
skip[nodeID] = true
}
for _, pending := range report.PendingAudits {
skip[pending.NodeID] = true
}
}
report, err = service.Verifier.Verify(ctx, stripe, skip)
if err != nil {
errlist.Add(err)
}
// TODO(moby) we need to decide if we want to do something with nodes that the reporter failed to update
_, err = service.Reporter.RecordAudits(ctx, report)
if err != nil {
errlist.Add(err)
}
return errlist.Err()
}