Workflow Core 1.7.0

• Various performance optimizations, any users of the EntityFramework persistence providers will have to update their persistence libraries to the latest version as well.

• Added CancelCondition to fluent builder API.

  Copy

  .CancelCondition(data => <<expression>>, <<Continue after cancellation>>)
  
  

  This allows you to specify a condition under which any active step can be prematurely cancelled. For example, suppose you create a future scheduled task, but you want to cancel the future execution of this task if some condition becomes true.

  c#Copy

  builder
      .StartWith(context => Console.WriteLine("Hello"))
      .Schedule(data => TimeSpan.FromSeconds(5)).Do(schedule => schedule
          .StartWith<DoSomething>()
          .Then<DoSomethingFurther>()
      )
      .CancelCondition(data => !data.SheduledTaskRequired)
      .Then(context => Console.WriteLine("Doing normal tasks"));
  

  You could also use this implement a parallel flow where once a single path completes, all the other paths are cancelled.

  c#Copy

  .Parallel()
      .Do(then => then
          .StartWith<DoSomething>()
          .WaitFor("Approval", (data, context) => context.Workflow.IdNow)
      )
      .Do(then => then
          .StartWith<DoSomething>()
          .Delay(data => TimeSpan.FromDays(3))
          .Then<EscalateIssue>()
      )
  .Join()
      .CancelCondition(data => data.IsApproved, true)
  .Then<MoveAlong>();
  

• Deprecated WorkflowCore.LockProviders.RedLock in favour of WorkflowCore.Providers.Redis

• Create a new WorkflowCore.Providers.Redis library that includes providers for distributed locking, queues and event hubs.

  • Provides Queueing support backed by Redis.
  • Provides Distributed locking support backed by Redis.
  • Provides event hub support backed by Redis.

  This makes it possible to have a cluster of nodes processing your workflows.

  Installing

  Install the NuGet package "WorkflowCore.Providers.Redis"

  Using Nuget package console PM> Install-Package WorkflowCore.Providers.Redis Using .NET CLI dotnet add package WorkflowCore.Providers.Redis

  Usage

  Use the IServiceCollection extension methods when building your service provider

  • .UseRedisQueues
  • .UseRedisLocking
  • .UseRedisEventHub
  C#Copy

  services.AddWorkflow(cfg =>
  {
      cfg.UseRedisLocking("localhost:6379");
      cfg.UseRedisQueues("localhost:6379", "my-app");
      cfg.UseRedisEventHub("localhost:6379", "my-channel")
  });