Created
December 7, 2012 19:46
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Attempt at asynchronous insert in Azure Table (not working). See http://stackoverflow.com/questions/13769081/asynchronous-insert-in-azure-table
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using System; | |
using System.Data.Services.Client; | |
using System.Diagnostics; | |
using Microsoft.WindowsAzure; | |
using Microsoft.WindowsAzure.StorageClient; | |
namespace WorkerRole1 | |
{ | |
public class TableStorageWriter | |
{ | |
private const string _tableName = "StorageTest"; | |
private readonly CloudStorageAccount _storageAccount; | |
private readonly CloudTableClient _tableClient; | |
private TableServiceContext _context; | |
public TableStorageWriter() | |
{ | |
_storageAccount = CloudStorageAccount.Parse(CloudConfigurationManager.GetSetting("StorageConnectionString")); | |
_tableClient = _storageAccount.CreateCloudTableClient(); | |
_tableClient.CreateTableIfNotExist(_tableName); | |
_context = _tableClient.GetDataServiceContext(); | |
} | |
public void Write(string message) | |
{ | |
try | |
{ | |
DateTime now = DateTime.UtcNow; | |
var entity = new StorageTestEntity | |
{ | |
Message = message, | |
PartitionKey = string.Format("{0:yyyy-MM-dd}", now), | |
RowKey = string.Format("{0:HH:mm:ss.fff}-{1}", now, Guid.NewGuid()) | |
}; | |
_context.AddObject(_tableName, entity); | |
// This statement works but it's synchronous | |
// context.SaveChangesWithRetries(); | |
// This attempt at saving asynchronously results in System.ArgumentException: | |
// The current object did not originate the async result. Parameter name: asyncResult | |
_context.BeginSaveChangesWithRetries(SaveChangesOptions.Batch, | |
(asyncResult => _context.EndSaveChanges(asyncResult)), null); | |
} | |
catch (StorageClientException e) | |
{ | |
Debug.WriteLine("Error: {0}", e.Message); | |
Debug.WriteLine("Extended error info: {0} : {1}", | |
e.ExtendedErrorInformation.ErrorCode, | |
e.ExtendedErrorInformation.ErrorMessage); | |
} | |
} | |
} | |
internal class StorageTestEntity : TableServiceEntity | |
{ | |
public string Message { get; set; } | |
} | |
} |
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