private async Task ExecuteQueryAsync(string processName, TableQuery<T> rangeQuery, Func<T, bool> filter, Func<IEnumerable<T>, bool> yieldData)
{
try
{
TableContinuationToken tableContinuationToken = null;
var table = GetTable();
do
{
var queryResponse = await table.ExecuteQuerySegmentedAsync(rangeQuery, tableContinuationToken);
tableContinuationToken = queryResponse.ContinuationToken;
var shouldWeContinue = yieldData(TableStorageUtils.ApplyFilter(queryResponse.Results, filter));
if (!shouldWeContinue)
break;
}
while (tableContinuationToken != null);
}
catch (Exception ex)
{
_log?.WriteFatalError("Table storage: " + _tableName, processName, rangeQuery.FilterString ?? "[null]", ex).Wait();
throw;
}
}
public virtual async Task DeleteAsync(T item)
{
try
{
await GetTable().ExecuteAsync(TableOperation.Delete(item));
}
catch (Exception ex)
{
_log?.WriteFatalError("Table storage: " + _tableName, "Delete item", TableStorageUtils.PrintItem(item), ex).Wait();
throw;
}
}
private void HandleException(T item, Exception ex, IEnumerable<int> notLogCodes)
{
var storageException = ex as StorageException;
if (storageException != null)
{
if (!storageException.HandleStorageException(notLogCodes))
{
// Если этот эксепшн не обработан, то логируем его
_log?.WriteFatalError("Table storage: " + _tableName, "Insert item",
TableStorageUtils.PrintItem(item), ex);
}
}
else
{
_log?.WriteFatalError("Table storage: " + _tableName, "Insert item", TableStorageUtils.PrintItem(item), ex);
}
}
public async Task <T> MergeAsync(string partitionKey, string rowKey, Func <T, T> mergeAction)
{
object itm = "Not read";
try
{
while (true)
{
try
{
var entity = await GetDataAsync(partitionKey, rowKey);
if (entity != null)
{
var result = mergeAction(entity);
itm = result;
if (result != null)
{
await GetTable().ExecuteAsync(TableOperation.Merge(result));
}
return(result);
}
return(null);
}
catch (StorageException e)
{
// Если поймали precondition fall = 412, значит в другом потоке данную сущность успели поменять
// - нужно повторить операцию, пока не исполнится без ошибок
if (e.RequestInformation.HttpStatusCode != 412)
{
throw;
}
}
}
}
catch (Exception ex)
{
_log?.WriteFatalError("Table storage: " + _tableName, "Replace item", TableStorageUtils.PrintItem(itm), ex).Wait();
throw;
}
}
public async Task InsertOrMergeAsync(T item)
{
try
{
await GetTable().ExecuteAsync(TableOperation.InsertOrMerge(item));
}
catch (Exception ex)
{
if (_log != null)
{
await _log.WriteFatalError("Table storage: " + _tableName, "InsertOrMerge item", TableStorageUtils.PrintItem(item), ex);
}
}
}
