frostfs-node/pkg/services/audit/auditor/por.go

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package auditor
import (
"bytes"
"encoding/hex"
"sync"
"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
"github.com/nspcc-dev/neofs-node/pkg/util/rand"
oidSDK "github.com/nspcc-dev/neofs-sdk-go/object/id"
"github.com/nspcc-dev/tzhash/tz"
"go.uber.org/zap"
)
func (c *Context) executePoR() {
wg := new(sync.WaitGroup)
sgs := c.task.StorageGroupList()
for i := range sgs {
wg.Add(1)
sg := sgs[i]
if err := c.porWorkerPool.Submit(func() {
c.checkStorageGroupPoR(i, sg)
wg.Done()
}); err != nil {
wg.Done()
}
}
wg.Wait()
c.porWorkerPool.Release()
c.report.SetPoRCounters(c.porRequests.Load(), c.porRetries.Load())
}
func (c *Context) checkStorageGroupPoR(ind int, sg *oidSDK.ID) {
storageGroup, err := c.cnrCom.GetSG(c.task, sg) // get storage group
if err != nil {
c.log.Warn("can't get storage group",
zap.Stringer("sgid", sg),
zap.String("error", err.Error()))
return
}
members := storageGroup.Members()
c.updateSGInfo(ind, members)
var (
tzHash []byte
totalSize uint64
accRequests, accRetries uint32
)
for i := range members {
objectPlacement, err := c.buildPlacement(&members[i])
if err != nil {
c.log.Info("can't build placement for storage group member",
zap.Stringer("sg", sg),
zap.String("member_id", members[i].String()),
)
continue
}
flat := placement.FlattenNodes(objectPlacement)
rand.Shuffle(len(flat), func(i, j int) {
flat[i], flat[j] = flat[j], flat[i]
})
for j := range flat {
accRequests++
if j > 0 { // in best case audit get object header on first iteration
accRetries++
}
hdr, err := c.cnrCom.GetHeader(c.task, &flat[j], &members[i], true)
if err != nil {
c.log.Debug("can't head object",
zap.String("remote_node", hex.EncodeToString(flat[j].PublicKey())),
zap.String("oid", members[i].String()))
continue
}
// update cache for PoR and PDP audit checks
c.updateHeadResponses(hdr)
if len(tzHash) == 0 {
tzHash = hdr.PayloadHomomorphicHash().Sum()
} else {
tzHash, err = tz.Concat([][]byte{
tzHash,
hdr.PayloadHomomorphicHash().Sum(),
})
if err != nil {
c.log.Debug("can't concatenate tz hash",
zap.String("oid", members[i].String()),
zap.String("error", err.Error()))
break
}
}
totalSize += hdr.PayloadSize()
break
}
}
c.porRequests.Add(accRequests)
c.porRetries.Add(accRetries)
sizeCheck := storageGroup.ValidationDataSize() == totalSize
tzCheck := bytes.Equal(tzHash, storageGroup.ValidationDataHash().Sum())
if sizeCheck && tzCheck {
c.report.PassedPoR(sg) // write report
} else {
if !sizeCheck {
c.log.Debug("storage group size check failed",
zap.Uint64("expected", storageGroup.ValidationDataSize()),
zap.Uint64("got", totalSize))
}
if !tzCheck {
c.log.Debug("storage group tz hash check failed")
}
c.report.FailedPoR(sg) // write report
}
}