FargatePlatformVersion not getting respected in StepFunctions when using CDK

[yashwanthkp]

FargatePlatformVersion not getting respected in StepFunctions when using CDK

Reproduction Steps

I have a fargate task as a step in my step-function with the below code which tries to start the task on FargatePlatform version 1.4.

return new sfn.Task(app, props.id, {
    task: new tasks.RunEcsFargateTask({
        cluster: props.cluster,
        taskDefinition: props.taskDef,
        subnets: props.cgpVpc.selectSubnets({subnetType: SubnetType.PRIVATE}),
        integrationPattern: props.integrationPattern,
        containerOverrides: [
            {
                containerName: "containerId",
                environment: getSfnEnvValues(props.envValueKeys)
            }],
        platformVersion: FargatePlatformVersion.VERSION1_4
    }),
    resultPath: props.resultPath,
    timeout: timeout
});

After I run cdk deploy, I end up getting the below ASL code

"TaskRun": {
      "Next": "X",
      "Parameters": {
        "Cluster": "arn: aws: ecs: us-west-2:...",
        "TaskDefinition": "arn: aws: ecs: us-west-2: ....",
        "NetworkConfiguration": {
          "AwsvpcConfiguration": {
            "Subnets": [
              "subnet-...."
            ],
            "SecurityGroups": [
              "sg-...."
            ]
          }
        },
        "Overrides": {
          "ContainerOverrides": [
            {
              "Name": "Container",
              "Environment": [
                {
                  "Name": "STAGE",
                  "Value": "devo"
                }
              ]
            }
          ]
        },
        "LaunchType": "FARGATE"
      },
      "Type": "Task",
      "Resource": "arn: aws: states: : : ecs: runTask.waitForTaskToken",
      "TimeoutSeconds": 900
    },

I was expecting a new line "PlatformVersion": "1.4.0" in the generated ASL.

Error Log

There are no errors on cdk deploy. However the stepfunction created does not have "PlatformVersion": "1.4.0" override in ASL.

Environment

• CLI Version :
• Framework Version: : 1.39
• Node.js Version: 12.x
• **OS : Linux
• Language (Version): Typescript: 3.6.4

Other

NA

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This is 🐛 Bug Report

[shivlaks]

@yashwanthkp thanks for reporting the issue and detailed repro steps. I'd expect the output to include the fargate version as well. I'll investigate to see why that property is not being honoured and provide an update.

[yashwanthkp]

@shivlaks

Thanks for the response!

Is there a tentative date for the fix for this?

[shivlaks]

@yashwanthkp added a commit to #8451 that honors the fargate platform version. Note that this is the newer style of calling service integrations with Step Functions, which we are aligning so we can push Step Functions towards stable and drop the experimental tag

[yashwanthkp]

@shivlaks Thanks for the response! Which version of CDK will the above change be rolled out in?

[shivlaks]

@yashwanthkp there's still some feedback to work through before it'll be merged and i'm currently on it.
After it's merged, it'll be included in the next released version of the CDK. you can follow release notes to keep an eye out for the new ECS service integration with Step Functions when it pops up.