public async Task SaveBulkAsync <T>(List <T> items) where T : MasterDocument
{
if (items?.Count <= 0)
{
new ArgumentNullException(nameof(items));
}
var firstItem = items.First();
if (firstItem.Id.IsNullOrEmpty())
{
throw new ArgumentNullException($"First item {nameof(firstItem.Id)}.", items.GetType().Name);
}
var partitionId = firstItem.Id.IdToMasterPartitionId();
foreach (var item in items)
{
item.PartitionId = partitionId;
item.SetDataType();
await item.ValidateObjectAsync();
}
double totalRU = 0;
try
{
var partitionKey = new Cosmos.PartitionKey(partitionId);
var concurrentTasks = new List <Task>(items.Count);
foreach (var item in items)
{
concurrentTasks.Add(container.UpsertItemAsync(item, partitionKey)
.ContinueWith(async(responseTask) =>
{
if (responseTask.Exception != null)
{
logger.Error(responseTask.Exception);
}
totalRU += (await responseTask).RequestCharge;
}));
}
await Task.WhenAll(concurrentTasks);
}
catch (Exception ex)
{
throw new CosmosDataException(partitionId, ex);
}
finally
{
logger.Metric($"CosmosDB RU, @master - save bulk count '{items.Count}' type '{typeof(T)}'.", totalRU);
}
}
public async Task UpsertItemAsync(string id, T item)
{
await _container.UpsertItemAsync <T>(item, ResolvePartitionKey(id));
}
