Question

我创建了一个Web服务，可以访问Microsoft Analysis Services Cube中的数据。我想看看webservice将如何执行，所以我生成了简单的控制台应用程序，它生成了＆＃39; x＆＃39;线程和每个线程使得＆＃39; y＆＃39;对Web服务的请求。

控制台应用

 static int counter = 0;
        static void Main(string[] args)
        {
            WaitCallback callBack;

            callBack = new WaitCallback(RunAsync);
            for (var i = 0; i < 7; i++)
            {
                Console.WriteLine("openeed thread:" + i);
                ThreadPool.QueueUserWorkItem(callBack, i);
            }
            Console.ReadLine();
        }

        private static void RunAsync(object state)
        {
            for (var i = 0; i < 200; i++)
            {
                using (var client = new HttpClient())
                {
                    client.BaseAddress = new Uri("http://localhost:49425/");
                    client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", "some data");
                    var x = client.GetAsync('URL');

                    if (x.Result.IsSuccessStatusCode)
                    {
                        var result = x.Result.Content.ReadAsAsync<float>();
                    }
                    Interlocked.Increment(ref counter);
                    Console.WriteLine(counter + " Thread : "+ state + " # request " + i);
                }
            }
        }
    }

以下是在网络服务上调用的方法：

public float GetTurnover(Guid ClientUid, int startDate, int endDate)
    {
        float returnValue = 0.0f;
        var cn = new AdomdConnection();
        cn.ConnectionString = Constants.CubeConnectionString;
        try
        {
            var open = Task.Run(() => cn.Open());
            Task.WaitAll(open);
        }
        catch
        {

        }


        var mdxQuery = new StringBuilder();
        // string test = @"some query";

        using (var command = new AdomdCommand(query, cn))
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("Amount", typeof(float));

            try
            {
                var data = command.ExecuteReader();
                dt.Load(data);
                var close = Task.Run(() => cn.Close());
                Task.WaitAll(close);
                float.TryParse(dt.Rows[0].ItemArray[1].ToString(), out returnValue);

                return returnValue;
            }
            catch
            {

            }
            return returnValue;
        }

这一行：var open = Task.Run(() => cn.Open());有时会在100-150个请求之后中断，这是不一致的。我在IIS和Cube上增加了同时连接的＃，但它似乎没有帮助。

任何想法是什么打破？

修改

Stacktrace：

Microsoft.AnalysisServices.AdomdClient.AdomdConnectionException was unhandled by user code
  HResult=-2146233088
  Message=The connection either timed out or was lost.
  Source=Microsoft.AnalysisServices.AdomdClient
  StackTrace:
       at Microsoft.AnalysisServices.AdomdClient.XmlaClient.EndRequest()
       at Microsoft.AnalysisServices.AdomdClient.XmlaClient.SendMessage(Boolean endReceivalIfException, Boolean readSession, Boolean readNamespaceCompatibility)
       at Microsoft.AnalysisServices.AdomdClient.XmlaClient.Discover(String requestType, String requestNamespace, ListDictionary properties, IDictionary restrictions, Boolean sendNamespacesCompatibility)
       at Microsoft.AnalysisServices.AdomdClient.XmlaClient.SupportsProperty(String propName)
       at Microsoft.AnalysisServices.AdomdClient.XmlaClient.Connect(ConnectionInfo connectionInfo, Boolean beginSession)
       at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.XmlaClientProvider.Connect(Boolean toIXMLA)
       at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.XmlaClientProvider.Microsoft.AnalysisServices.AdomdClient.AdomdConnection.IXmlaClientProviderEx.ConnectXmla()
       at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.ConnectToXMLA(Boolean createSession, Boolean isHTTP)
       at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.Open()
       at DataAccess.Repositories.DashboardRepository.<>c__DisplayClass4.<GetTurnover>b__0() in :line 27
       at System.Threading.Tasks.Task.InnerInvoke()
       at System.Threading.Tasks.Task.Execute()
  InnerException: System.Net.WebException
       HResult=-2146233079
       Message=The remote server returned an error: (503) Server Unavailable.
       Source=System
       StackTrace:
            at System.Net.HttpWebRequest.GetResponse()
            at Microsoft.AnalysisServices.AdomdClient.HttpStream.GetResponseStream()
            at Microsoft.AnalysisServices.AdomdClient.HttpStream.GetResponseDataType()
       InnerException:

为什么ADOMD.NET连接有时不会打开？

0 个答案: