Esempio n. 1
0
func scanTable(f storage.File, checksum bool) (corrupted bool) {
	fi := storage.NewFileInfo(f)
	r, err := f.Open()
	if err != nil {
		log.Fatal(err)
	}
	defer r.Close()

	size, err := r.Seek(0, os.SEEK_END)
	if err != nil {
		log.Fatal(err)
	}

	o := &opt.Options{Strict: opt.NoStrict}
	if checksum {
		o.Strict = opt.StrictBlockChecksum | opt.StrictReader
	}
	tr, err := table.NewReader(r, size, fi, nil, bpool, o)
	if err != nil {
		log.Fatal(err)
	}
	defer tr.Release()

	checkData := func(i int, t string, data []byte) bool {
		if len(data) == 0 {
			panic(fmt.Sprintf("[%v] nil data: i=%d t=%s", fi, i, t))
		}

		checksum0, checksum1 := dataChecksum(data)
		if checksum0 != checksum1 {
			atomic.StoreUint32(&fail, 1)
			atomic.StoreUint32(&done, 1)
			corrupted = true

			data0, data1 := dataSplit(data)
			data0c0, data0c1 := dataChecksum(data0)
			data1c0, data1c1 := dataChecksum(data1)
			log.Printf("FATAL: [%v] Corrupted data i=%d t=%s (%#x != %#x): %x(%v) vs %x(%v)",
				fi, i, t, checksum0, checksum1, data0, data0c0 == data0c1, data1, data1c0 == data1c1)
			return true
		}
		return false
	}

	iter := tr.NewIterator(nil, nil)
	defer iter.Release()
	for i := 0; iter.Next(); i++ {
		ukey, _, kt, kerr := parseIkey(iter.Key())
		if kerr != nil {
			atomic.StoreUint32(&fail, 1)
			atomic.StoreUint32(&done, 1)
			corrupted = true

			log.Printf("FATAL: [%v] Corrupted ikey i=%d: %v", fi, i, kerr)
			return
		}
		if checkData(i, "key", ukey) {
			return
		}
		if kt == ktVal && checkData(i, "value", iter.Value()) {
			return
		}
	}
	if err := iter.Error(); err != nil {
		if errors.IsCorrupted(err) {
			atomic.StoreUint32(&fail, 1)
			atomic.StoreUint32(&done, 1)
			corrupted = true

			log.Printf("FATAL: [%v] Corruption detected: %v", fi, err)
		} else {
			log.Fatal(err)
		}
	}

	return
}