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Workflow Core v1.7 Release Notes

Release Date: 2019-01-13 // over 5 years ago

  • 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.

    .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.

    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.

    .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

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