public void Write(string key, string value)
{
var batch = new TableBatchOperation();
var record = new AzureTableRecord
{
PartitionKey = _appName,
RowKey = key,
ETag = "*"
};
if (value != null)
{
record.Value = value;
batch.InsertOrMerge(record);
}
else
{
batch.Delete(record);
}
try
{
_table.ExecuteBatch(batch);
}
catch (StorageException)
{
//not ideal check. If value is null (Delete operation) and record doesn't exist
//I ignore the exception as it simply says that entity doesn't exist which is fine.
//I don't know how to check for the specific error code.
if (value != null)
{
throw;
}
}
}
public string Read(string key)
{
if (key == null)
{
return(null);
}
var filter = TableQuery.CombineFilters(
TableQuery.GenerateFilterCondition("PartitionKey", QueryComparisons.Equal, _appName),
TableOperators.And,
TableQuery.GenerateFilterCondition("RowKey", QueryComparisons.Equal, key));
var query = new TableQuery <AzureTableRecord>().Where(filter);
IEnumerable <AzureTableRecord> records = _table.ExecuteQuery(query);
AzureTableRecord record = records?.FirstOrDefault();
return(record?.Value);
}