Exemplo n.º 1
0
        public static long?GetRowCount(string streamPath)
        {
            var certificate = CertificateGenerator.GetCertificateByThumbprint();
            var settings    = new Microsoft.Cosmos.ExportClient.ScopeExportSettings();

            settings.Path = streamPath;
            settings.ClientCertificate = certificate;

            var exportClient = new Microsoft.Cosmos.ExportClient.ExportClient(settings);

            try
            {
                return(exportClient.GetRowCount(null).Result);
            }
            // we cannot catch the exception "CosmosFileNotFoundException" by using CosmosUriException,
            //catch (Microsoft.Cosmos.CosmosUriException e)

            // and we either cannot use this exception "CosmosFileNotFoundException".
            // For the asynchronous function GetRowCount(We can see its return is a subclass of Task), its exception will be packaged as AggregateException, we cannot directly catch it.
            catch (CosmosFileNotFoundException e)
            {
                return(null);
            }
            // We just can catch AggregateException and judge it in AggregateException.InnerException
            // AggregateException: Represents one or more errors that occur during application execution.
            // Doc link: https://docs.microsoft.com/en-us/dotnet/api/system.aggregateexception?view=netframework-4.8
            catch (AggregateException e)
            {
                // Here we just want to catch the Exception "CosmosFileNotFoundException", if it is not the reason, we will throw the exception.
                if (e.InnerException.GetType() == typeof(CosmosFileNotFoundException))
                {
                    Console.WriteLine("Cannot find the file...");
                    return(null);
                }
                if (e.InnerException.GetType() == typeof(CosmosDirectoryNotFoundException))
                {
                    Console.WriteLine("Cannot find the directory...");
                    return(null);
                }
                if (e.InnerException.GetType() == typeof(CosmosArgumentException))
                {
                    Console.WriteLine($"CosmosArgumentException...{e.InnerException.Message}");
                    return(null);
                }
                throw;
            }
            // This can catch any exception..
            catch (Exception e)
            {
                Console.WriteLine($"Message: {e}; Type: {e.GetType()}");
                return(null);
            }
        }
Exemplo n.º 2
0
        public void Export(string stream, string filename)
        {
            var settings = new Microsoft.Cosmos.ExportClient.ScopeExportSettings();

            settings.Path = stream;


            var exportClient = new Microsoft.Cosmos.ExportClient.ExportClient(settings);

            // Top
            if (this.Top > 0)
            {
                settings.Top = this.Top;
            }


            // Columns
            settings.ColumnFilters = this.Columns;


            // Partitions
            // if PartitionIndices is set to null, or not set, default to get all partitions
            settings.PartitionIndices = exportClient.GetAllPartitionIndices(null).Result;

            try
            {
                var task     = exportClient.Export(null, new System.Threading.CancellationToken());
                var readTask = task.ContinueWith((prevTask) =>
                {
                    using (Microsoft.Cosmos.ExportClient.IExportDataReader dataReader = prevTask.Result.DataReader)
                    {
                        OutputToFile(dataReader, filename, this.Separator, this.Terminator);
                        Console.WriteLine("New Thread");
                    }
                });
                readTask.Wait();
            }
            catch (System.AggregateException ae)
            {
                //System.Console.WriteLine(ae.ToString());
                throw;
            }
        }
Exemplo n.º 3
0
        // This function also just can check the existing of file not directory.
        public static bool CheckExists(string streamPath, out long rowCount)
        {
            var certificate = CertificateGenerator.GetCertificateByThumbprint();
            var settings    = new Microsoft.Cosmos.ExportClient.ScopeExportSettings();

            settings.Path = streamPath;
            settings.ClientCertificate = certificate;

            var exportClient = new Microsoft.Cosmos.ExportClient.ExportClient(settings);

            try
            {
                rowCount = exportClient.GetRowCount(null).Result;
                return(true);
            }
            catch (Exception e)
            {
                Console.WriteLine($"Message: {e.Message}; Type: {e.GetType()}");
                rowCount = -1;
                return(false);
            }
        }