Пример #1
0
func (s *DynamoStore) Root() hash.Hash {
	result, err := s.ddbsvc.GetItem(&dynamodb.GetItemInput{
		TableName: aws.String(s.table),
		Key: map[string]*dynamodb.AttributeValue{
			refAttr: {B: s.rootKey},
		},
	})
	d.PanicIfError(err)

	itemLen := len(result.Item)
	if itemLen == 0 {
		return hash.Hash{}
	}
	d.Chk.True(itemLen == 2 || itemLen == 3, "Root should have 2 or three attributes on it: %+v", result.Item)
	if itemLen == 3 {
		d.Chk.True(result.Item[compAttr] != nil)
		d.Chk.True(result.Item[compAttr].S != nil)
		d.Chk.True(noneValue == *result.Item[compAttr].S)
	}
	return hash.FromSlice(result.Item[chunkAttr].B)
}
Пример #2
0
func (s *DynamoStore) processResponses(responses []map[string]*dynamodb.AttributeValue, batch ReadBatch) {
	for _, item := range responses {
		p := item[refAttr]
		d.Chk.True(p != nil)
		r := hash.FromSlice(s.removeNamespace(p.B))
		p = item[chunkAttr]
		d.Chk.True(p != nil)
		b := p.B
		if p = item[compAttr]; p != nil && *p.S == gzipValue {
			gr, err := gzip.NewReader(bytes.NewReader(b))
			d.Chk.NoError(err)
			buf := &bytes.Buffer{}
			_, err = io.Copy(buf, gr)
			d.Chk.NoError(err)
			b = buf.Bytes()
		}
		c := NewChunkWithHash(r, b)
		for _, reqChan := range batch[r] {
			reqChan.Satisfy(c)
		}
		delete(batch, r)
	}
}