.net core工作流
前一篇介绍了如何使用office 365 Power Automate+Form实现公司审批流需求。然而实际和业务方讨论下来发现流程的参与者会有公司AD域以外的用户参与。那么Office 365就不适合此业务场景,因为Power Automate + Form其背后存储用的one drive,身份验证用的AAD,并且也没有组织架构。 所以综合考虑下来,只能采用代码实现workflow的解决方案。
操作步骤如下:
mkdir workflow-demo
cd workflow-demo
dotnet new console
dotnet add package WorkflowCore
dotnet add package Microsoft.Extensions.DependencyInjection
dotnet add package Microsoft.Extensions.DependencyInjection.Abstractions
dotnet add package Microsoft.Extensions.Logging
dotnet add package Microsoft.Extensions.Logging.Abstractions
dotnet add package Microsoft.Extensions.Logging.Console
dotnet add package Microsoft.Extensions.Logging.Debug
新建HelloWorld步骤
using System;
using System.Linq;
using WorkflowCore.Interface;
using WorkflowCore.Models;
namespace workflow_demo
{
public class HelloWorld : StepBody
{
public override ExecutionResult Run(IStepExecutionContext context)
{
Console.WriteLine("Hello world");
return ExecutionResult.Next();
}
}
}
新建GoodByeWorld步骤
using Microsoft.Extensions.Logging;
using System;
using System.Linq;
using WorkflowCore.Interface;
using WorkflowCore.Models;
namespace workflow_demo
{
public class GoodbyeWorld : StepBody
{
private ILogger _logger;
public GoodbyeWorld(ILoggerFactory loggerFactory)
{
_logger = loggerFactory.CreateLogger<GoodbyeWorld>();
}
public override ExecutionResult Run(IStepExecutionContext context)
{
Console.WriteLine("Goodbye world");
_logger.LogInformation("Hi there!");
return ExecutionResult.Next();
}
}
}
新建Workflow
using System;
using System.Linq;
using WorkflowCore.Interface;
using WorkflowCore.Models;
namespace workflow_demo
{
public class HelloWorldWorkflow : IWorkflow
{
public void Build(IWorkflowBuilder<object> builder)
{
builder
.UseDefaultErrorBehavior(WorkflowErrorHandling.Suspend)
.StartWith<HelloWorld>()
.Then<GoodbyeWorld>();
}
public string Id => "HelloWorld";
public int Version => 1;
}
}
Program.cs
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Linq;
using WorkflowCore.Interface;
namespace workflow_demo
{
class Program
{
public static void Main(string[] args)
{
IServiceProvider serviceProvider = ConfigureServices();
//start the workflow host
var host = serviceProvider.GetService<IWorkflowHost>();
host.RegisterWorkflow<HelloWorldWorkflow>();
host.Start();
host.StartWorkflow("HelloWorld");
Console.ReadLine();
host.Stop();
}
private static IServiceProvider ConfigureServices()
{
//setup dependency injection
IServiceCollection services = new ServiceCollection();
services.AddLogging();
services.AddWorkflow();
//services.AddWorkflow(x => x.UseMongoDB(@"mongodb://localhost:27017", "workflow"));
services.AddTransient<GoodbyeWorld>();
var serviceProvider = services.BuildServiceProvider();
return serviceProvider;
}
}
}
最后dotnet run,可以看到执行后果。
参考:
https://github.com/danielgerlag/workflow-core
https://workflow-core.readthedocs.io/en/latest/