Ejemplo n.º 1
0
func newJournalReader(file storage.File, checksum bool, dropf journal.DropFunc) (p *journalReader, err error) {
	r := new(journalReader)
	r.file = file
	r.reader, err = file.Open()
	if err != nil {
		return
	}
	r.journal = journal.NewReader(r.reader, checksum, dropf)
	return r, nil
}
Ejemplo n.º 2
0
func newJournalReader(file storage.File, checksum bool, dropf journal.DropFunc) (p *journalReader, err error) {
	r, err := file.Open()
	if err != nil {
		return nil, err
	}
	jr, err := journal.NewReader(r, 0, checksum, dropf)
	if err != nil {
		return nil, err
	}
	return &journalReader{
		file:    file,
		reader:  r,
		journal: jr,
	}, nil
}
Ejemplo n.º 3
0
func (h *dbCorruptHarness) corrupt(ft storage.FileType, offset, n int) {
	p := &h.dbHarness
	t := p.t

	var file storage.File
	ff, _ := p.stor.GetFiles(ft)
	for _, f := range ff {
		if file == nil || f.Num() > file.Num() {
			file = f
		}
	}
	if file == nil {
		t.Fatalf("no such file with type %q", ft)
	}

	r, err := file.Open()
	if err != nil {
		t.Fatal("cannot open file: ", err)
	}
	x, err := r.Seek(0, 2)
	if err != nil {
		t.Fatal("cannot query file size: ", err)
	}
	m := int(x)
	if _, err := r.Seek(0, 0); err != nil {
		t.Fatal(err)
	}

	if offset < 0 {
		if -offset > m {
			offset = 0
		} else {
			offset = m + offset
		}
	}
	if offset > m {
		offset = m
	}
	if offset+n > m {
		n = m - offset
	}

	buf := make([]byte, m)
	_, err = io.ReadFull(r, buf)
	if err != nil {
		t.Fatal("cannot read file: ", err)
	}
	r.Close()

	for i := 0; i < n; i++ {
		buf[offset+i] ^= 0x80
	}

	err = file.Remove()
	if err != nil {
		t.Fatal("cannot remove old file: ", err)
	}
	w, err := file.Create()
	if err != nil {
		t.Fatal("cannot create new file: ", err)
	}
	_, err = w.Write(buf)
	if err != nil {
		t.Fatal("cannot write new file: ", err)
	}
	w.Close()
}
Ejemplo n.º 4
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
}