public async Task ExecuteAsync()
{
var stopwatch = Stopwatch.StartNew();
var outcome = JobOutcome.Failure;
try
{
_logger.LogInformation("Fetching old owner data from blob storage.");
var storageResult = await _ownerDataClient.ReadLatestIndexedAsync();
_logger.LogInformation("Fetching new owner data from the database.");
var databaseResult = await _databaseFetcher.GetPackageIdToOwnersAsync();
_logger.LogInformation("Detecting owner changes.");
var changes = _ownerSetComparer.Compare(storageResult.Result, databaseResult);
var changesBag = new ConcurrentBag <IdAndValue <string[]> >(changes.Select(x => new IdAndValue <string[]>(x.Key, x.Value)));
_logger.LogInformation("{Count} package IDs have owner changes.", changesBag.Count);
if (!changes.Any())
{
outcome = JobOutcome.NoOp;
return;
}
_logger.LogInformation(
"Starting {Count} workers pushing owners changes to Azure Search.",
_options.Value.MaxConcurrentBatches);
await ParallelAsync.Repeat(() => WorkAsync(changesBag), _options.Value.MaxConcurrentBatches);
_logger.LogInformation("All of the owner changes have been pushed to Azure Search.");
// Persist in storage the list of all package IDs that have owner changes. This allows debugging and future
// analytics on frequency of ownership changes.
_logger.LogInformation("Uploading the package IDs that have owner changes to blob storage.");
await _ownerDataClient.UploadChangeHistoryAsync(changes.Keys.ToList());
_logger.LogInformation("Uploading the new owner data to blob storage.");
await _ownerDataClient.ReplaceLatestIndexedAsync(databaseResult, storageResult.AccessCondition);
outcome = JobOutcome.Success;
}
finally
{
stopwatch.Stop();
_telemetryService.TrackUpdateOwnersCompleted(outcome, stopwatch.Elapsed);
}
}