Refresh Dataset API returns 400 Bad Request when refresh is in progress

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mthierba wrote:

Hi,

I'm making use of the new Dataset Refresh API, and the documentation states that a status code of 409 Conflict is returned when a refresh is already executing. However, I am receiving a 400 Bad Request for that exact scenario. I would prefer it if the implementation was matching the docs, hence if it was possible to distinguish the refresh-in-progress condition from any other generic API errors. Querying the Refresh History endpoint instead is not a viable alternative either because it only returns a status of "Unknown" when a refresh is in progress - again, making it impossible to distinguish that state from any other that might be deemed "unknown",

 

Thanks,

Mathias

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mthierba

Thanks for reporting that. I can reproduce the behavior of returning 400 while 409 is expected. I'm going to consulting this internally and as a workaround, you cound find the 400 error message to determine "refresh is executing".

        static void refreshDataset(string groupId, string datasetId)
        {

            HttpWebRequest request = System.Net.HttpWebRequest.CreateHttp(String.Format("https://api.powerbi.com/v1.0/myorg/groups/{0}/datasets/{1}/refreshes", groupId, datasetId));
            //POST web request to create a datasource.
            request.KeepAlive = true;
            request.Method = "POST";
            request.ContentLength = 0;

            //Add token to the request header
            request.Headers.Add("Authorization", String.Format("Bearer {0}", token));

            try
            {
                //Write JSON byte[] into a Stream
                using (Stream writer = request.GetRequestStream())
                {

                    var response = (HttpWebResponse)request.GetResponse();
                    Console.WriteLine("Dataset refresh request {0}", response.StatusCode.ToString());
                }
            }
            catch (WebException wex)
            {
                if (wex.Response != null)
                {
                    using (var errorResponse = (HttpWebResponse)wex.Response)
                    {
                        using (var reader = new StreamReader(errorResponse.GetResponseStream()))
                        {
                            string errorString = reader.ReadToEnd();
                            dynamic respJson = JsonConvert.DeserializeObject<dynamic>(errorString);
                            //if refreshing is executing, the output would be "Invalid dataset refresh request. Another refresh request is already executing"
                            Console.WriteLine(respJson["error"]["message"]); 
                        }
                    }
                }
            } 
        }

I am always getting the  "Operation returned an invalid status code 'UnsupportedMediaType'" error everytime I try to refresh a dataset. 

Snippet

var refreshData = client.Datasets.RefreshDatasetInGroup(cloneGroup.Id, report.DatasetId) as Datasets;