Exemple #1
0
func deserializeHash(reader io.Reader) hash.Hash {
	digest := hash.Digest{}
	n, err := io.ReadFull(reader, digest[:])
	d.Chk.NoError(err)
	d.Chk.True(int(hash.ByteLen) == n)
	return hash.New(digest)
}
Exemple #2
0
func fromDbKey(key []byte) (uint64, hash.Hash) {
	refHeight := uint64(0)
	r := bytes.NewReader(key)
	err := binary.Read(r, binary.BigEndian, &refHeight)
	d.Chk.NoError(err)
	digest := hash.Digest{}
	err = binary.Read(r, binary.BigEndian, &digest)
	d.Chk.NoError(err)
	return refHeight, hash.New(digest)
}
func deserializeChunk(reader io.Reader) (Chunk, bool) {
	digest := hash.Sha1Digest{}
	n, err := io.ReadFull(reader, digest[:])
	if err == io.EOF {
		return EmptyChunk, false
	}
	d.Chk.NoError(err)
	d.Chk.True(int(sha1.Size) == n)
	h := hash.New(digest)

	chunkSize := uint32(0)
	err = binary.Read(reader, binary.BigEndian, &chunkSize)
	d.Chk.NoError(err)

	w := NewChunkWriter()
	n2, err := io.CopyN(w, reader, int64(chunkSize))
	d.Chk.NoError(err)
	d.Chk.True(int64(chunkSize) == n2)
	c := w.Chunk()
	d.Chk.True(h == c.Hash(), "%s != %s", h, c.Hash())
	return c, true
}
Exemple #4
0
func TestEnsureHash(t *testing.T) {
	assert := assert.New(t)
	vs := NewTestValueStore()
	count := byte(1)
	mockGetRef := func(v Value) hash.Hash {
		d := hash.Digest{}
		d[0] = count
		count++
		return hash.New(d)
	}
	testRef := func(r hash.Hash, expected byte) {
		d := r.Digest()
		assert.Equal(expected, d[0])
		for i := 1; i < len(d); i++ {
			assert.Equal(byte(0), d[i])
		}
	}

	getHashOverride = mockGetRef
	defer func() {
		getHashOverride = nil
	}()

	bl := newBlob(newBlobLeafSequence(nil, []byte("hi")))
	cb := newBlob(newBlobMetaSequence([]metaTuple{{Ref{}, newOrderedKey(Number(2)), 2, bl}}, vs))

	ll := newList(newListLeafSequence(nil, String("foo")))
	lt := MakeListType(StringType)
	cl := newList(newIndexedMetaSequence([]metaTuple{{Ref{}, newOrderedKey(Number(1)), 1, ll}}, lt, vs))

	newStringOrderedKey := func(s string) orderedKey {
		return newOrderedKey(String(s))
	}

	ml := newMap(newMapLeafSequence(nil, mapEntry{String("foo"), String("bar")}))
	cm := newMap(newOrderedMetaSequence([]metaTuple{{Ref{}, newStringOrderedKey("foo"), 1, ml}}, MakeMapType(StringType, StringType), vs))

	sl := newSet(newSetLeafSequence(nil, String("foo")))
	cps := newSet(newOrderedMetaSequence([]metaTuple{{Ref{}, newStringOrderedKey("foo"), 1, sl}}, MakeSetType(StringType), vs))

	count = byte(1)
	values := []Value{
		newBlob(newBlobLeafSequence(nil, []byte{})),
		cb,
		newList(newListLeafSequence(nil, String("bar"))),
		cl,
		cm,
		newMap(newMapLeafSequence(nil)),
		cps,
		newSet(newSetLeafSequence(nil)),
	}
	for i := 0; i < 2; i++ {
		for j, v := range values {
			testRef(v.Hash(), byte(j+1))
		}
	}

	for _, v := range values {
		expected := byte(0x42)
		assignHash(v.(hashCacher), hash.New(hash.Digest{0: expected}))
		testRef(v.Hash(), expected)
	}

	count = byte(1)
	values = []Value{
		Bool(false),
		Number(0),
		String(""),
	}
	for i := 0; i < 2; i++ {
		for j, v := range values {
			testRef(v.Hash(), byte(i*len(values)+(j+1)))
		}
	}
}
Exemple #5
0
func (b *binaryNomsReader) readHash() hash.Hash {
	digest := hash.Sha1Digest{}
	copy(digest[:], b.buff[b.offset:b.offset+sha1.Size])
	b.offset += sha1.Size
	return hash.New(digest)
}
Exemple #6
0
func (b *binaryNomsReader) readHash() hash.Hash {
	digest := hash.Digest{}
	copy(digest[:], b.buff[b.offset:b.offset+hash.ByteLen])
	b.offset += hash.ByteLen
	return hash.New(digest)
}