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It may not build out of the box** +> +> This examples is built on Construct Libraries marked "Experimental" and may not be updated for latest breaking changes. +> +> If build is unsuccessful, please create an [issue](https://github.com/aws-samples/aws-cdk-examples/issues/new) so that we may debug the problem + +--- + + +This example creates a basic Stepfunction workflow that starts a task and then listens at regular intervals for completion, then reports completion and status. + +## Build + +To build this app, you need to be in this example's root folder. Then run the following: +```bash +dotnet build src +cdk deploy StepfunctionsJobPollerStack +``` + +Enjoy! diff --git a/csharp/stepfunctions-job-poller/cdk.json b/csharp/stepfunctions-job-poller/cdk.json new file mode 100644 index 000000000..15399d264 --- /dev/null +++ b/csharp/stepfunctions-job-poller/cdk.json @@ -0,0 +1,3 @@ +{ + "app": "dotnet run -p src/StepfunctionsJobPoller/StepfunctionsJobPoller.csproj" +} diff --git a/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller.sln b/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller.sln new file mode 100644 index 000000000..a18c58e79 --- /dev/null +++ b/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller.sln @@ -0,0 +1,34 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio 15 +VisualStudioVersion = 15.0.26124.0 +MinimumVisualStudioVersion = 15.0.26124.0 +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StepfunctionsJobPoller", "StepfunctionsJobPoller\StepfunctionsJobPoller.csproj", "{02459B83-7B22-4CEC-8CE6-C05C96E45952}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|Any CPU = Debug|Any CPU + Debug|x64 = Debug|x64 + Debug|x86 = Debug|x86 + Release|Any CPU = Release|Any CPU + Release|x64 = Release|x64 + Release|x86 = Release|x86 + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Debug|Any CPU.Build.0 = Debug|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Debug|x64.ActiveCfg = Debug|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Debug|x64.Build.0 = Debug|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Debug|x86.ActiveCfg = Debug|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Debug|x86.Build.0 = Debug|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Release|Any CPU.ActiveCfg = Release|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Release|Any CPU.Build.0 = Release|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Release|x64.ActiveCfg = Release|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Release|x64.Build.0 = Release|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Release|x86.ActiveCfg = Release|Any CPU + {02459B83-7B22-4CEC-8CE6-C05C96E45952}.Release|x86.Build.0 = Release|Any CPU + EndGlobalSection +EndGlobal diff --git a/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/Program.cs b/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/Program.cs new file mode 100644 index 000000000..406604bc6 --- /dev/null +++ b/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/Program.cs @@ -0,0 +1,19 @@ +using Amazon.CDK; +using System; +using System.Collections.Generic; +using System.Linq; + +namespace StepfunctionsJobPoller +{ + class Program + { + static void Main(string[] args) + { + var app = new App(); + + new StepfunctionsJobPollerStack(app, "StepfunctionsJobPollerStack"); + + app.Synth(); + } + } +} diff --git a/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/StepfunctionsJobPoller.csproj b/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/StepfunctionsJobPoller.csproj new file mode 100644 index 000000000..be732d6a8 --- /dev/null +++ b/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/StepfunctionsJobPoller.csproj @@ -0,0 +1,19 @@ + + + + Exe + netcoreapp3.0 + + + + + + + + + + + + + + diff --git a/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/StepfunctionsJobPollerConstruct.cs b/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/StepfunctionsJobPollerConstruct.cs new file mode 100644 index 000000000..53ac28ab4 --- /dev/null +++ b/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/StepfunctionsJobPollerConstruct.cs @@ -0,0 +1,36 @@ +using Amazon.CDK; +using Amazon.CDK.AWS.IAM; +using Amazon.CDK.AWS.S3; +using System.Collections.Generic; +using System.Linq; + +namespace StepfunctionsJobPoller +{ + public class StepfunctionsJobPollerConstructProps + { + public int BucketCount { get; set; } + } + + public class StepfunctionsJobPollerConstruct : Construct + { + private readonly IEnumerable _buckets; + + // A simple construct that contains a collection of AWS S3 buckets. + public StepfunctionsJobPollerConstruct(Construct scope, string id, StepfunctionsJobPollerConstructProps props) : base(scope, id) + { + _buckets = Enumerable.Range(0, props.BucketCount) + .Select(i => new Bucket(this, $"Bucket{i}")) + .ToList(); + + } + + // Give the specified principal read access to the buckets in this construct. + public void GrantRead(IPrincipal principal) + { + foreach (Bucket bucket in _buckets) + { + bucket.GrantRead(principal, "*"); + } + } + } +} diff --git a/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/StepfunctionsJobPollerStack.cs b/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/StepfunctionsJobPollerStack.cs new file mode 100644 index 000000000..5a81fd6be --- /dev/null +++ b/csharp/stepfunctions-job-poller/src/StepfunctionsJobPoller/StepfunctionsJobPollerStack.cs @@ -0,0 +1,62 @@ +using Amazon.CDK; +using Amazon.CDK.AWS.StepFunctions; +using Amazon.CDK.AWS.StepFunctions.Tasks; + +namespace StepfunctionsJobPoller +{ + public class StepfunctionsJobPollerStack : Stack + { + public StepfunctionsJobPollerStack(Construct scope, string id, IStackProps props = null) : base(scope, id, props) + { + var submitJobActivity = new Activity(this, "SubmitJob"); + var checkJobActivity = new Activity(this, "CheckJob"); + + var submitJob = new Task(this, "Submit Job", new TaskProps + { + Task = new InvokeActivity(submitJobActivity), + ResultPath= "$.guid" + }); + + var waitX = new Wait(this, "Wait X Seconds", new WaitProps + { + Time = WaitTime.SecondsPath("$.wait_time") + }); + + var getStatus = new Task(this, "Get Job Status", new TaskProps + { + Task = new InvokeActivity(checkJobActivity), + InputPath = "$.guid", + ResultPath = "$.status" + }); + + var isComplete = new Choice(this, "Job Complete?"); + + var jobFailed = new Fail(this, "Job Failed", new FailProps + { + Cause = "AWS Batch Job Failed", + Error = "DescribeJob returned FAILED" + }); + + var finalStatus = new Task(this, "Get Final Job Status", new TaskProps + { + Task = new InvokeActivity(checkJobActivity), + InputPath = "$.guid" + }); + + var chain = Chain + .Start(submitJob) + .Next(waitX) + .Next(getStatus) + .Next(isComplete + .When(Condition.StringEquals("$.status", "FAILED"), jobFailed) + .When(Condition.StringEquals("$.status", "SUCCEEDED"), finalStatus) + .Otherwise(waitX)); + + new StateMachine(this, "StateMachine", new StateMachineProps + { + Definition = chain, + Timeout = Duration.Seconds(30) + }); + } + } +}