private async Task IndexAsync(
ISearchIndexClientWrapper indexClient,
IReadOnlyCollection <IndexAction <KeyedDocument> > batch)
{
if (batch.Count == 0)
{
return;
}
if (batch.Count > _options.Value.AzureSearchBatchSize)
{
throw new ArgumentException("The provided batch is too large.");
}
_logger.LogInformation(
"Pushing batch of {BatchSize} to index {IndexName}.",
batch.Count,
indexClient.IndexName);
IList <IndexingResult> indexingResults = null;
Exception innerException = null;
var stopwatch = Stopwatch.StartNew();
try
{
var batchResults = await indexClient.Documents.IndexAsync(new IndexBatch <KeyedDocument>(batch));
indexingResults = batchResults.Results;
stopwatch.Stop();
_telemetryService.TrackIndexPushSuccess(indexClient.IndexName, batch.Count, stopwatch.Elapsed);
}
catch (IndexBatchException ex)
{
stopwatch.Stop();
_telemetryService.TrackIndexPushFailure(indexClient.IndexName, batch.Count, stopwatch.Elapsed);
_logger.LogError(
0,
ex,
"An exception was thrown while sending documents to index {IndexName}.",
indexClient.IndexName);
indexingResults = ex.IndexingResults;
innerException = ex;
}
catch (CloudException ex) when(ex.Response.StatusCode == HttpStatusCode.RequestEntityTooLarge && batch.Count > 1)
{
stopwatch.Stop();
_telemetryService.TrackIndexPushSplit(indexClient.IndexName, batch.Count);
var halfCount = batch.Count / 2;
var halfA = batch.Take(halfCount).ToList();
var halfB = batch.Skip(halfCount).ToList();
_logger.LogWarning(
0,
ex,
"The request body for a batch of {BatchSize} was too large. Splitting into two batches of size " +
"{HalfA} and {HalfB}.",
batch.Count,
halfA.Count,
halfB.Count);
await IndexAsync(indexClient, halfA);
await IndexAsync(indexClient, halfB);
}
if (indexingResults != null)
{
const int errorsToLog = 5;
var errorCount = 0;
foreach (var result in indexingResults)
{
if (!result.Succeeded)
{
if (errorCount < errorsToLog)
{
_logger.LogError(
"Indexing document with key {Key} failed for index {IndexName}. {StatusCode}: {ErrorMessage}",
result.Key,
indexClient.IndexName,
result.StatusCode,
result.ErrorMessage);
}
errorCount++;
}
}
if (errorCount > 0)
{
_logger.LogError(
"{ErrorCount} errors were found when indexing a batch for index {IndexName}. {LoggedErrors} were logged.",
errorCount,
indexClient.IndexName,
Math.Min(errorCount, errorsToLog));
throw new InvalidOperationException(
$"Errors were found when indexing a batch. Up to {errorsToLog} errors get logged.",
innerException);
}
}
}