protected override async Task WakeUp(CancellationToken cancellationToken)
{
var minCommitTime = (MaxKnownCommitTime - MaxCommitDuration).ToDateTime();
// Fetching potentially new operations
var operations = await DbOperationLog
.ListNewlyCommitted(minCommitTime, BatchSize, cancellationToken)
.ConfigureAwait(false);
// Processing them
var tasks = new Task[operations.Count];
for (var i = 0; i < operations.Count; i++)
{
var operation = operations[i];
var isLocal = operation.AgentId == AgentInfo.Id.Value;
// Local completions are invoked by TransientOperationScopeProvider
// _inside_ the command processing pipeline. Trying to trigger them here
// means a tiny chance of running them _outside_ of command processing
// pipeline, which makes it possible to see command completing
// prior to its invalidation logic completion.
tasks[i] = isLocal
? Task.CompletedTask // Skips local operation!
: OperationCompletionNotifier.NotifyCompleted(operation);
var commitTime = operation.CommitTime.ToMoment();
if (MaxKnownCommitTime < commitTime)
{
MaxKnownCommitTime = commitTime;
}
}
// Let's wait when all of these tasks complete, otherwise
// we might end up creating too many tasks
await Task.WhenAll(tasks).ConfigureAwait(false);
LastCount = operations.Count;
}
