public virtual async Task DispatchAsync(
BatchPartitionMetric partitionMetric,
CancellationToken cancellationToken = default)
{
using (ITrace trace = Tracing.Trace.GetRootTrace("Batch Dispatch Async", TraceComponent.Batch, Tracing.TraceLevel.Info))
{
await this.DispatchHelperAsync(trace, partitionMetric, cancellationToken);
}
}
public virtual async Task DispatchAsync(
BatchPartitionMetric partitionMetric,
CancellationToken cancellationToken = default)
{
await this.clientContext.OperationHelperAsync("Batch Dispatch Async",
requestOptions : null,
task : (trace) => this.DispatchHelperAsync(trace, partitionMetric, cancellationToken),
traceComponent : TraceComponent.Batch,
traceLevel : Tracing.TraceLevel.Info);
}
public BatchAsyncStreamer(
int maxBatchOperationCount,
int maxBatchByteSize,
TimerWheel timerWheel,
SemaphoreSlim limiter,
int maxDegreeOfConcurrency,
CosmosSerializerCore serializerCore,
BatchAsyncBatcherExecuteDelegate executor,
BatchAsyncBatcherRetryDelegate retrier)
{
if (maxBatchOperationCount < 1)
{
throw new ArgumentOutOfRangeException(nameof(maxBatchOperationCount));
}
if (maxBatchByteSize < 1)
{
throw new ArgumentOutOfRangeException(nameof(maxBatchByteSize));
}
if (executor == null)
{
throw new ArgumentNullException(nameof(executor));
}
if (retrier == null)
{
throw new ArgumentNullException(nameof(retrier));
}
if (serializerCore == null)
{
throw new ArgumentNullException(nameof(serializerCore));
}
if (limiter == null)
{
throw new ArgumentNullException(nameof(limiter));
}
if (maxDegreeOfConcurrency < 1)
{
throw new ArgumentNullException(nameof(maxDegreeOfConcurrency));
}
this.maxBatchOperationCount = maxBatchOperationCount;
this.maxBatchByteSize = maxBatchByteSize;
this.executor = executor;
this.retrier = retrier;
this.timerWheel = timerWheel;
this.serializerCore = serializerCore;
this.currentBatcher = this.CreateBatchAsyncBatcher();
this.ResetTimer();
this.limiter = limiter;
this.oldPartitionMetric = new BatchPartitionMetric();
this.partitionMetric = new BatchPartitionMetric();
this.maxDegreeOfConcurrency = maxDegreeOfConcurrency;
this.StartCongestionControlTimer();
}
public virtual async Task DispatchAsync(
BatchPartitionMetric partitionMetric,
CancellationToken cancellationToken = default)
{
this.interlockIncrementCheck.EnterLockCheck();
PartitionKeyRangeServerBatchRequest serverRequest = null;
ArraySegment <ItemBatchOperation> pendingOperations;
try
{
try
{
// HybridRow serialization might leave some pending operations out of the batch
Tuple <PartitionKeyRangeServerBatchRequest, ArraySegment <ItemBatchOperation> > createRequestResponse = await this.CreateServerRequestAsync(cancellationToken);
serverRequest = createRequestResponse.Item1;
pendingOperations = createRequestResponse.Item2;
// Any overflow goes to a new batch
foreach (ItemBatchOperation operation in pendingOperations)
{
await this.retrier(operation, cancellationToken);
}
}
catch (Exception ex)
{
// Exceptions happening during request creation, fail the entire list
foreach (ItemBatchOperation itemBatchOperation in this.batchOperations)
{
itemBatchOperation.Context.Fail(this, ex);
}
throw;
}
try
{
Stopwatch stopwatch = Stopwatch.StartNew();
PartitionKeyRangeBatchExecutionResult result = await this.executor(serverRequest, cancellationToken);
int numThrottle = result.ServerResponse.Any(r => r.StatusCode == (System.Net.HttpStatusCode)StatusCodes.TooManyRequests) ? 1 : 0;
partitionMetric.Add(
numberOfDocumentsOperatedOn: result.ServerResponse.Count,
timeTakenInMilliseconds: stopwatch.ElapsedMilliseconds,
numberOfThrottles: numThrottle);
using (PartitionKeyRangeBatchResponse batchResponse = new PartitionKeyRangeBatchResponse(serverRequest.Operations.Count, result.ServerResponse, this.serializerCore))
{
foreach (ItemBatchOperation itemBatchOperation in batchResponse.Operations)
{
TransactionalBatchOperationResult response = batchResponse[itemBatchOperation.OperationIndex];
// Bulk has diagnostics per a item operation.
// Batch has a single diagnostics for the execute operation
if (itemBatchOperation.DiagnosticsContext != null)
{
response.DiagnosticsContext = itemBatchOperation.DiagnosticsContext;
response.DiagnosticsContext.AddDiagnosticsInternal(batchResponse.DiagnosticsContext);
}
else
{
response.DiagnosticsContext = batchResponse.DiagnosticsContext;
}
if (!response.IsSuccessStatusCode)
{
Documents.ShouldRetryResult shouldRetry = await itemBatchOperation.Context.ShouldRetryAsync(response, cancellationToken);
if (shouldRetry.ShouldRetry)
{
await this.retrier(itemBatchOperation, cancellationToken);
continue;
}
}
itemBatchOperation.Context.Complete(this, response);
}
}
}
catch (Exception ex)
{
// Exceptions happening during execution fail all the Tasks part of the request (excluding overflow)
foreach (ItemBatchOperation itemBatchOperation in serverRequest.Operations)
{
itemBatchOperation.Context.Fail(this, ex);
}
throw;
}
}
catch (Exception ex)
{
DefaultTrace.TraceError("Exception during BatchAsyncBatcher: {0}", ex);
}
finally
{
this.batchOperations.Clear();
this.dispatched = true;
}
}
