public static async Task Use2()
{
var builder = new DisruptorPipelineBuilder();
var results = new HashSet <string>();
var pipeline = builder.Build <string, char>(x => x.Max(), 2)
.AddStep(x => new string(x, 20), 2)
.AddStep(x => $"[{x}]", 1)
.AddStep(x => results.Add(x), 1)
.Create();
for (var i = 0; i < 1_000_000; i++)
{
_ = pipeline.Execute(i.ToString());
}
await pipeline.Execute("X");
Console.WriteLine("Completed!");
foreach (var result in results)
{
Console.WriteLine(result);
}
pipeline.Dispose();
}
private void InitPipeline()
{
var builder = new DisruptorPipelineBuilder();
_pipeline = builder.Build <Deal, Deal>(deal =>
{
// count volume to balance ratio
using (var ctx = new WatchdogDbContext())
{
var dealEntity = ctx.Deals.First(d => d.Id == deal.Id);
dealEntity.VolumeToBalanceRatio = deal.Volume / deal.Balance;
ctx.SaveChanges();
}
return(deal);
}, 1).AddStep(deal =>
{
// find connections based on rules
using (var ctx = new WatchdogDbContext())
{
// RULES DEFINITION - START
var matches = ctx.Deals
.Where(d => d.Id != deal.Id)
.Where(d => DbFunctions.DiffSeconds(d.Date, deal.Date) < _openTimeDeltaInSeconds)
.Where(d => d.SymbolId == deal.SymbolId)
//.Where(d => d.VolumeToBalanceRatio) // TODO: what is the correct condition of the VtBR?
.ToList();
// RULES DEFINITION - END
if (matches.Any())
{
var dealWithGroup = matches.FirstOrDefault(d => d.GroupId != null);
var dealGroup = dealWithGroup != null
? dealWithGroup.Group
: ctx.DealGroups.Add(new DealGroup());
var dealEntity = ctx.Deals.First(d => d.Id == deal.Id);
dealEntity.Group = dealGroup;
foreach (var match in matches)
{
match.Group = dealGroup;
}
// TODO: Cleanup empty groups, if any / could be scheduled as a periodic DB cleanup process
ctx.SaveChanges();
// LOG it
var sb = new StringBuilder($"Matches with [{deal}]:").AppendLine();
matches.ForEach(d => sb.AppendLine($" ==> [{d}]"));
_logger.Log(sb.ToString());
}
}
return(true);
}, 1).Create();
}
public static async Task Use1()
{
var builder = new DisruptorPipelineBuilder();
var pipeline = builder.Build <string, string>(FindMostCommon, 2)
.AddStep(x => x.Length, 2)
.AddStep(x => x % 2 == 1, 2)
.Create();
Console.WriteLine(await pipeline.Execute("The pipeline pattern is the best pattern"));
Console.WriteLine(await pipeline.Execute("The pipeline pattern is the best pattern"));
Console.WriteLine(await pipeline.Execute("The pipeline pattern is the best pattern"));
Console.WriteLine(await pipeline.Execute("The pipeline patter is the best patter"));
Console.WriteLine(await pipeline.Execute("The pipeline pattern is the best pattern"));
pipeline.Dispose();
}
public static async Task Use1()
{
var builder = new DisruptorPipelineBuilder();
var pipeline = builder
.Build <string, string>(Utils.FindMostCommon, 2)
.AddStep(x => Utils.CountChars(x), 2)
.AddStep(x => Utils.IsOdd(x), 2)
.Create();
Console.WriteLine(await pipeline.Execute("The pipeline pattern is the best pattern"));
Console.WriteLine(await pipeline.Execute("The pipeline pattern is the best pattern"));
Console.WriteLine(await pipeline.Execute("The pipeline pattern is the best pattern"));
Console.WriteLine(await pipeline.Execute("The pipeline patter is the best patter"));
Console.WriteLine(await pipeline.Execute("The pipeline pattern is the best pattern"));
pipeline.Dispose();
}