public ExecutionPipeline(Kernel kernel)
{
_kernel = kernel;
_commandQueue = new BufferBlock<CommandRequest[]>();
_queryQueue = new BatchBlock<QueryRequest>(MaxConcurrentQueries);
var transactionHandler = new ActionBlock<object>(t =>
{
if (t is QueryRequest[])
{
var queries = t as QueryRequest[];
Task[] tasks = queries.Select(q => Task.Factory.StartNew(_ => ExecuteQuery(q), null)).ToArray();
Task.WaitAll(tasks);
}
else if (t is CommandRequest[])
{
var commands = t as CommandRequest[];
foreach (var commandContext in commands)
{
var result = _kernel.Execute(commandContext.Command);
commandContext.Response.Post(result);
}
}
});
_commandQueue.LinkTo(transactionHandler);
_queryQueue.LinkTo(transactionHandler);
_timer = new Timer(_ => _queryQueue.TriggerBatch());
_timer.Change(Interval, Interval);
}
void ExecuteQuery(QueryRequest context)
{
var result = _kernel.Execute(context.Query);
context.Response.Post(result);
}
private void ExecuteQuery(RequestContext queryContext)
{
var result = _kernel.Execute((Query)queryContext.Transaction);
queryContext.Initiator.Tell(result, Context.Parent);
}
