Workflow Core is a light weight workflow engine targeting .NET Standard. Think: long running processes with multiple tasks that need to track state. It supports pluggable persistence and concurrency providers to allow for multi-node clusters.
See Tutorial here.
Define your workflows with the fluent API.
public class MyWorkflow : IWorkflow
{
public void Build(IWorkflowBuilder<MyData> builder)
{
builder
.StartWith<Task1>()
.Then<Task2>()
.Then<Task3>;
}
}Define your workflows in JSON
{
"Id": "HelloWorld",
"Version": 1,
"Steps": [
{
"Id": "Hello",
"StepType": "MyApp.HelloWorld, MyApp",
"NextStepId": "Bye"
},
{
"Id": "Bye",
"StepType": "MyApp.GoodbyeWorld, MyApp"
}
]
}- New user workflow
public class MyData
{
public string Email { get; set; }
public string Password { get; set; }
public string UserId { get; set; }
}
public class MyWorkflow : IWorkflow
{
public void Build(IWorkflowBuilder<MyData> builder)
{
builder
.StartWith<CreateUser>()
.Input(step => step.Email, data => data.Email)
.Input(step => step.Password, data => data.Password)
.Output(data => data.UserId, step => step.UserId);
.Then<SendConfirmationEmail>()
.WaitFor("confirmation", data => data.UserId)
.Then<UpdateUser>()
.Input(step => step.UserId, data => data.UserId);
}
}- Saga Transactions
public class MyWorkflow : IWorkflow
{
public void Build(IWorkflowBuilder<MyData> builder)
{
builder
.StartWith<CreateCustomer>()
.Then<PushToSalesforce>()
.OnError(WorkflowErrorHandling.Retry, TimeSpan.FromMinutes(10))
.Then<PushToERP>()
.OnError(WorkflowErrorHandling.Retry, TimeSpan.FromMinutes(10));
}
}builder
.StartWith<LogStart>()
.Saga(saga => saga
.StartWith<Task1>()
.CompensateWith<UndoTask1>()
.Then<Task2>()
.CompensateWith<UndoTask2>()
.Then<Task3>()
.CompensateWith<UndoTask3>()
)
.OnError(Models.WorkflowErrorHandling.Retry, TimeSpan.FromMinutes(10))
.Then<LogEnd>();Since workflows are typically long running processes, they will need to be persisted to storage between steps. There are several persistence providers available as separate Nuget packages.
- MemoryPersistenceProvider (Default provider, for demo and testing purposes)
- MongoDB
- SQL Server
- PostgreSQL
- Sqlite
- Redis (coming soon...)
- Daniel Gerlag - Initial work
- Jackie Ja
- Aaron Scribnor
- Roberto Paterlini
This project is licensed under the MIT License - see the LICENSE.md file for details