func (s *DynamoStore) UpdateRoot(current, last hash.Hash) bool {
s.requestWg.Wait()
putArgs := dynamodb.PutItemInput{
TableName: aws.String(s.table),
Item: map[string]*dynamodb.AttributeValue{
refAttr: {B: s.rootKey},
chunkAttr: {B: current.DigestSlice()},
compAttr: {S: aws.String(noneValue)},
},
}
if last.IsEmpty() {
putArgs.ConditionExpression = aws.String(valueNotExistsExpression)
} else {
putArgs.ConditionExpression = aws.String(valueEqualsExpression)
putArgs.ExpressionAttributeValues = map[string]*dynamodb.AttributeValue{
":prev": {B: last.DigestSlice()},
}
}
_, err := s.ddbsvc.PutItem(&putArgs)
if err != nil {
if awsErr, ok := err.(awserr.Error); ok {
if awsErr.Code() == "ConditionalCheckFailedException" {
return false
}
d.Chk.NoError(awsErr)
} else {
d.Chk.NoError(err)
}
}
return true
}
func (bhcs *httpBatchStore) requestRoot(method string, current, last hash.Hash) *http.Response {
u := *bhcs.host
u.Path = httprouter.CleanPath(bhcs.host.Path + constants.RootPath)
if method == "POST" {
d.Exp.False(current.IsEmpty())
params := u.Query()
params.Add("last", last.String())
params.Add("current", current.String())
u.RawQuery = params.Encode()
}
req := newRequest(method, bhcs.auth, u.String(), nil, nil)
res, err := bhcs.httpClient.Do(req)
d.Chk.NoError(err)
return res
}
func EnsureHash(h *hash.Hash, v Value) hash.Hash {
if h.IsEmpty() {
*h = getHash(v)
}
return *h
}