95 lines
2.5 KiB
Go
95 lines
2.5 KiB
Go
package cmd
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import (
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"crypto/sha512"
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"encoding/hex"
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"io/ioutil"
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"os"
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"path"
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"runtime"
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"sync/atomic"
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"time"
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"github.com/lbryio/reflector.go/meta"
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"github.com/lbryio/reflector.go/store/speedwalk"
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"github.com/lbryio/lbry.go/v2/extras/errors"
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log "github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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)
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var threads int
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func init() {
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var cmd = &cobra.Command{
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Use: "check-integrity",
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Short: "check blobs integrity for a given path",
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Run: integrityCheckCmd,
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}
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cmd.Flags().StringVar(&diskStorePath, "store-path", "", "path of the store where all blobs are cached")
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cmd.Flags().IntVar(&threads, "threads", runtime.NumCPU()-1, "number of concurrent threads to process blobs")
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rootCmd.AddCommand(cmd)
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}
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func integrityCheckCmd(cmd *cobra.Command, args []string) {
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log.Printf("reflector %s", meta.VersionString())
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if diskStorePath == "" {
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log.Fatal("store-path must be defined")
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}
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blobs, err := speedwalk.AllFiles(diskStorePath, true)
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if err != nil {
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log.Fatalf("error while reading blobs from disk %s", errors.FullTrace(err))
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}
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tasks := make(chan string, len(blobs))
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done := make(chan bool)
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processed := new(int32)
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go produce(tasks, blobs)
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cpus := runtime.NumCPU()
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for i := 0; i < cpus-1; i++ {
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go consume(i, tasks, done, len(blobs), processed)
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}
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<-done
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}
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func produce(tasks chan<- string, blobs []string) {
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for _, b := range blobs {
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tasks <- b
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}
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close(tasks)
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}
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func consume(worker int, tasks <-chan string, done chan<- bool, totalTasks int, processed *int32) {
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start := time.Now()
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for b := range tasks {
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processedSoFar := atomic.AddInt32(processed, 1)
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if worker == 0 {
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remaining := int32(totalTasks) - processedSoFar
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timePerBlob := time.Since(start).Microseconds() / int64(processedSoFar)
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remainingTime := time.Duration(int64(remaining)*timePerBlob) * time.Microsecond
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log.Infof("[T%d] %d/%d blobs processed so far. ETA: %s", worker, processedSoFar, totalTasks, remainingTime.String())
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}
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blobPath := path.Join(diskStorePath, b[:2], b)
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blob, err := ioutil.ReadFile(blobPath)
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if err != nil {
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if os.IsNotExist(err) {
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continue
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}
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log.Errorf("[Worker %d] Error looking up blob %s: %s", worker, b, err.Error())
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continue
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}
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hashBytes := sha512.Sum384(blob)
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readHash := hex.EncodeToString(hashBytes[:])
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if readHash != b {
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log.Infof("[%s] found a broken blob while reading from disk. Actual hash: %s", b, readHash)
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err := os.Remove(blobPath)
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if err != nil {
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log.Errorf("Error while deleting broken blob %s: %s", b, err.Error())
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}
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}
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}
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done <- true
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}
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