private async Task <IQueryResult <T> > ExecuteQuery <T>(QueryOptions options, IDataMapper dataMapper)
{
// try get Query node
var node = Context.GetRandomNodeForService(ServiceType.Query);
var body = options.GetFormValuesAsJson();
StreamingQueryResult <T> queryResult;
using (var content = new StringContent(body, System.Text.Encoding.UTF8, MediaType.Json))
{
try
{
var response = await HttpClient.PostAsync(node.QueryUri, content, options.CancellationToken).ConfigureAwait(false);
var stream = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
queryResult = new StreamingQueryResult <T>
{
ResponseStream = stream,
HttpStatusCode = response.StatusCode,
Success = response.StatusCode == HttpStatusCode.OK
};
if (response.StatusCode != HttpStatusCode.OK)
{
//read the header and stop when we reach the queried rows
queryResult.ReadToRows();
if (response.StatusCode != HttpStatusCode.OK || queryResult.Status != QueryStatus.Success)
{
throw new QueryException(queryResult.Message,
queryResult.Status,
queryResult.Errors);
}
}
}
catch (TaskCanceledException e)
{
throw new TimeoutException("The request has timed out.", e);
}
}
return(queryResult);
}
