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Added async workflow example + copyright headers
Signed-off-by: Whit Waldo <whit.waldo@innovian.net>
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33 changes: 33 additions & 0 deletions
33
examples/Workflow/WorkflowAsyncApi/Activities/NotifyWarehouseActivity.cs
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| // ------------------------------------------------------------------------ | ||
| // Copyright 2021 The Dapr Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // ------------------------------------------------------------------------ | ||
|
|
||
| using Dapr.Workflow; | ||
| using WorkflowAsyncApi.Models; | ||
|
|
||
| namespace WorkflowAsyncApi.Activities; | ||
|
|
||
| internal sealed class NotifyWarehouseActivity : WorkflowActivity<Transaction, object?> | ||
| { | ||
| /// <summary> | ||
| /// Override to implement async (non-blocking) workflow activity logic. | ||
| /// </summary> | ||
| /// <param name="context">Provides access to additional context for the current activity execution.</param> | ||
| /// <param name="input">The deserialized activity input.</param> | ||
| /// <returns>The output of the activity as a task.</returns> | ||
| public override async Task<object?> RunAsync(WorkflowActivityContext context, Transaction input) | ||
| { | ||
| //Contact the warehouse to ship the product | ||
| await Task.Delay(TimeSpan.FromSeconds(8)); | ||
| return null; | ||
| } | ||
| } |
33 changes: 33 additions & 0 deletions
33
examples/Workflow/WorkflowAsyncApi/Activities/ProcessPaymentActivity.cs
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| // ------------------------------------------------------------------------ | ||
| // Copyright 2021 The Dapr Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // ------------------------------------------------------------------------ | ||
|
|
||
| using Dapr.Workflow; | ||
| using WorkflowAsyncApi.Models; | ||
|
|
||
| namespace WorkflowAsyncApi.Activities; | ||
|
|
||
| internal sealed class ProcessPaymentActivity : WorkflowActivity<Transaction, object?> | ||
| { | ||
| /// <summary> | ||
| /// Override to implement async (non-blocking) workflow activity logic. | ||
| /// </summary> | ||
| /// <param name="context">Provides access to additional context for the current activity execution.</param> | ||
| /// <param name="input">The deserialized activity input.</param> | ||
| /// <returns>The output of the activity as a task.</returns> | ||
| public override async Task<object?> RunAsync(WorkflowActivityContext context, Transaction input) | ||
| { | ||
| //Confirm payment with processor | ||
| await Task.Delay(TimeSpan.FromSeconds(10)); | ||
| return null; | ||
| } | ||
| } |
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| // ------------------------------------------------------------------------ | ||
| // Copyright 2021 The Dapr Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // ------------------------------------------------------------------------ | ||
|
|
||
| namespace WorkflowAsyncApi.Models; | ||
|
|
||
| internal sealed record Transaction(decimal Value) | ||
| { | ||
| public Guid CustomerId { get; init; } = Guid.NewGuid(); | ||
| } |
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|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| // ------------------------------------------------------------------------ | ||
| // Copyright 2021 The Dapr Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // ------------------------------------------------------------------------ | ||
|
|
||
| using Dapr.Workflow; | ||
| using Microsoft.Extensions.DependencyInjection; | ||
| using Microsoft.Extensions.Hosting; | ||
| using WorkflowAsyncApi.Activities; | ||
| using WorkflowAsyncApi.Models; | ||
| using WorkflowAsyncApi.Workflows; | ||
|
|
||
| var builder = Host.CreateDefaultBuilder(args).ConfigureServices(services => | ||
| { | ||
| services.AddDaprWorkflow(options => | ||
| { | ||
| options.RegisterWorkflow<DemoWorkflow>(); | ||
| options.RegisterActivity<ProcessPaymentActivity>(); | ||
| options.RegisterActivity<NotifyWarehouseActivity>(); | ||
| }); | ||
| }); | ||
|
|
||
| var host = await builder.StartAsync(); | ||
|
|
||
| await using var scope = host.Services.CreateAsyncScope(); | ||
| var daprWorkflowClient = scope.ServiceProvider.GetRequiredService<DaprWorkflowClient>(); | ||
|
|
||
| var instanceId = $"demo-workflow-{Guid.NewGuid().ToString()[..8]}"; | ||
| var transaction = new Transaction(16.58m); | ||
| await daprWorkflowClient.ScheduleNewWorkflowAsync(nameof(DemoWorkflow), instanceId, transaction); | ||
|
|
||
| //Poll for status updates every second | ||
| var status = await daprWorkflowClient.GetWorkflowStateAsync(instanceId); | ||
| do | ||
| { | ||
| Console.WriteLine($"Current status: {status.RuntimeStatus}, step: {status.ReadCustomStatusAs<string>()}"); | ||
| status = await daprWorkflowClient.GetWorkflowStateAsync(instanceId); | ||
| } while (!status.IsWorkflowCompleted); | ||
|
|
||
| Console.WriteLine($"Workflow completed - {status.ReadCustomStatusAs<string>()}"); |
18 changes: 18 additions & 0 deletions
18
examples/Workflow/WorkflowAsyncApi/WorkflowAsyncApi.csproj
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
|
|
||
| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net6.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
|
|
||
| <ItemGroup> | ||
| <PackageReference Include="Microsoft.Extensions.Hosting" /> | ||
| </ItemGroup> | ||
|
|
||
| <ItemGroup> | ||
| <ProjectReference Include="..\..\..\src\Dapr.Workflow\Dapr.Workflow.csproj" /> | ||
| </ItemGroup> | ||
|
|
||
| </Project> |
51 changes: 51 additions & 0 deletions
51
examples/Workflow/WorkflowAsyncApi/Workflows/DemoWorkflow.cs
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|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| // ------------------------------------------------------------------------ | ||
| // Copyright 2021 The Dapr Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // ------------------------------------------------------------------------ | ||
|
|
||
| using Dapr.Workflow; | ||
| using WorkflowAsyncApi.Activities; | ||
| using WorkflowAsyncApi.Models; | ||
|
|
||
| namespace WorkflowAsyncApi.Workflows; | ||
|
|
||
| internal sealed class DemoWorkflow : Workflow<Transaction, bool> | ||
| { | ||
| /// <summary> | ||
| /// Override to implement workflow logic. | ||
| /// </summary> | ||
| /// <param name="context">The workflow context.</param> | ||
| /// <param name="input">The deserialized workflow input.</param> | ||
| /// <returns>The output of the workflow as a task.</returns> | ||
| public override async Task<bool> RunAsync(WorkflowContext context, Transaction input) | ||
| { | ||
| try | ||
| { | ||
| //Submit the transaction to the payment processor | ||
| context.SetCustomStatus("Processing payment..."); | ||
| await context.CallActivityAsync(nameof(ProcessPaymentActivity), input); | ||
|
|
||
|
|
||
| //Send the transaction details to the warehouse | ||
| context.SetCustomStatus("Contacting warehouse..."); | ||
| await context.CallActivityAsync(nameof(NotifyWarehouseActivity), input); | ||
|
|
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| context.SetCustomStatus("Success!"); | ||
| return true; | ||
| } | ||
| catch | ||
| { | ||
| //If anything goes wrong, return false | ||
| context.SetCustomStatus("Something went wrong"); | ||
| return false; | ||
| } | ||
| } | ||
| } |