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Add composite activity output sample

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This commit is contained in:
Sipke Schoorstra 2021-11-18 14:59:58 +01:00
parent 6e014158c1
commit dbeda1961f
4 changed files with 67 additions and 8 deletions
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42
src/samples/console/Elsa.Samples.ProgrammaticCompositeActivitiesConsole/Activities/Sum.cs Normal file
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@ -0,0 +1,42 @@
using System;
using Elsa.Activities.ControlFlow;
using Elsa.Attributes;
using Elsa.Builders;
using Elsa.Services;
namespace Elsa.Samples.ProgrammaticCompositeActivitiesConsole.Activities
{
/// <summary>
/// Demonstrates accepting input properties and returning an output value from a composite activity.
/// </summary>
[Action(Outcomes = new[] { "Left", "Right" })]
public class Sum : CompositeActivity
{
[ActivityInput]
public int A
{
get => GetState<int>();
set => SetState(value);
}
[ActivityInput]
public int B
{
get => GetState<int>();
set => SetState(value);
}
[ActivityOutput]
public int Result
{
get => GetState<int>();
set => SetState(value);
}
public override void Build(ICompositeActivityBuilder builder)
{
builder
.StartWith(c => Result = A + B);
}
}
}

8
src/samples/console/Elsa.Samples.ProgrammaticCompositeActivitiesConsole/Elsa.Samples.ProgrammaticCompositeActivitiesConsole.csproj
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@ -7,13 +7,13 @@
</PropertyGroup>
<ItemGroup>
<PackageReference Include="System.Text.Encodings.Web" Version="5.0.1"/>
<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="5.0.2"/>
<PackageReference Include="Microsoft.Extensions.Logging.Console" Version="5.0.0"/>
<PackageReference Include="System.Text.Encodings.Web" Version="5.0.1" />
<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="5.0.2" />
<PackageReference Include="Microsoft.Extensions.Logging.Console" Version="5.0.0" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\..\core\Elsa\Elsa.csproj"/>
<ProjectReference Include="..\..\..\core\Elsa\Elsa.csproj" />
</ItemGroup>
</Project>

5
src/samples/console/Elsa.Samples.ProgrammaticCompositeActivitiesConsole/Program.cs
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@ -16,9 +16,8 @@ namespace Elsa.Samples.ProgrammaticCompositeActivitiesConsole
.AddLogging(logging => logging.AddConsole().SetMinimumLevel(LogLevel.Warning))
.AddElsa(options => options
.AddConsoleActivities()
.AddActivity<NavigateActivity>()
.AddActivity<CountdownActivity>()
.AddWorkflow<CompositionWorkflow>())
.AddActivitiesFrom<Program>()
.AddWorkflowsFrom<Program>())
.BuildServiceProvider();
// Run startup actions (not needed when registering Elsa with a Host).

20
src/samples/console/Elsa.Samples.ProgrammaticCompositeActivitiesConsole/Workflows/CompositionWorkflow.cs
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@ -20,6 +20,24 @@ namespace Elsa.Samples.ProgrammaticCompositeActivitiesConsole.Workflows
countDown.When("Right").WriteLine("Where going right!").ThenNamed("CountdownDemo");
})
.WriteLine("=Countdown demo=").WithName("CountdownDemo")
.Then<CountdownActivity>(activity => activity.Set(x => x.Start, 10));
.Then<CountdownActivity>(activity => activity.Set(x => x.Start, 10))
.WriteLine("=Sum demo=").WithName("SumDemo")
.WriteLine("Enter first value:")
.ReadLine().WithName("ValueA")
.WriteLine("Enter second value:")
.ReadLine().WithName("ValueB")
.Then<Sum>(activity => activity
.Set(x => x.A, async context =>
{
var a = (await context.WorkflowExecutionContext.GetNamedActivityPropertyAsync<ReadLine, string>("ValueA", r => r.Output))!;
return int.Parse(a);
})
.Set(x => x.B, async context =>
{
var b = (await context.WorkflowExecutionContext.GetNamedActivityPropertyAsync<ReadLine, string>("ValueB", r => r.Output))!;
return int.Parse(b);
})
).WithName("Sum1")
.WriteLine(async context => $"Sum: {await context.GetNamedActivityPropertyAsync<Sum, int>("Sum1", x => x.Result)}");
}
}