private static async Task <ResponseHolder> DocDbExceptionWrapper(Func <ResponseHolder, Task> action)
{
var response = new ResponseHolder();
try
{
await action(response);
}
catch (DocumentClientException dex)
{
response.StatusCode = (int)dex.StatusCode;
response.IsSuccess = false;
if (response.StatusCode == 429)
{
response.ThrottleHasWaited = true;
response.ThrottleSuggestedWait = dex.RetryAfter;
}
response.ResourceCharge = dex.RequestCharge;
}
catch (Exception ex)
{
response.Ex = ex;
response.StatusCode = 500;
response.IsSuccess = false;
}
return(response);
}
/// <summary>
/// This method resolves the documentId, and etag for the document in DocumentDb
/// </summary>
/// <param name="field"></param>
/// <param name="id">The entity Id.</param>
/// <param name="timeout"></param>
/// <param name="extractionJPaths"></param>
/// <returns>Returns a response holder that holds teh data.</returns>
public async Task <ResponseHolder> ResolveDocumentId(string field, string id, TimeSpan?timeout = null
, IEnumerable <KeyValuePair <string, string> > extractionJPaths = null)
{
var sql = $"SELECT * FROM c WHERE (c.{field}=@id)";
var param = new SearchParameter()
{
Name = "id", Value = id
};
var search = await Search(sql, 1, timeout, null, null, param);
var holder = new ResponseHolder {
IsTimeout = search.IsTimeout
};
if (search.IsSuccess)
{
var jQuery = JObject.Parse(search.Content);
int count = jQuery["_count"].Value <int>();
if (count == 1)
{
JToken entity = jQuery["Documents"].First();
holder.Id = id;
holder.IsSuccess = true;
holder.DocumentId = entity["_rid"].Value <string>();
holder.ETag = entity["_etag"].Value <string>();
holder.Content = entity.ToString();
//Extract the additional fields specified in the extraction collection.
if (extractionJPaths != null)
{
foreach (var jpath in extractionJPaths)
{
var token = entity[jpath.Value];
if (token != null)
{
holder.Fields.Add(jpath.Key, token.Value <string>());
}
}
}
}
else
{
holder.IsSuccess = false;
holder.Response = new HttpResponseMessage(HttpStatusCode.NotFound);
}
}
else
{
holder.Ex = search.Ex;
holder.Response = search.Response;
}
return(holder);
}
