Amazon.Scheduler.Model.ValidationException: 'batch is not a supported service for a target.'

[venukalam]

Describe the bug

I am trying to submit a batch job based on a schedule, using Event bridge scheduler (not using Eventbridge rules because of the max limit of 300 it has)

But when I call the CreateScheduleAsync method with the batch config using .Net SDK, I get a error message saying batch is not supported as a target.

Expected Behavior

Targetting a batch job through scheduler is possible on the AWS console, So I am expecting it to work with the SDK as well.

Current Behavior

This is the error message I get - "Amazon.Scheduler.Model.ValidationException: 'batch is not a supported service for a target.'"

Reproduction Steps

            var schedulerClient = new AmazonSchedulerClient();
            var scheduleJobInput = new
            {
                JobDefinition = <jobDefinitionName>,
                JobName = <jobName>,
                JobQueue = <jobQueueName>,
                ContainerOverrides = new ContainerOverridesCustom
                {
                    Command = new List<string>() { "some test data" }
                },
                Timeout = new JobTimeoutCustom
                {
                    AttemptDurationSeconds = <timeout>
                }
            };

            var scheduleTimeWindow = new FlexibleTimeWindow
            {
                Mode = FlexibleTimeWindowMode.OFF
            };

            var invokeBatchTarget = new Amazon.Scheduler.Model.Target
            {
                Arn = <jobQueueName>,
                RoleArn = <roleArn>,
                Input = JsonConvert.SerializeObject(scheduleJobInput)
            };

            var createScheduleRequest = new CreateScheduleRequest
            {
                Name = <scheduler-name>,
                ScheduleExpression = "cron(0 12 * * ? *)",
                State = ScheduleState.ENABLED,
                Description = <scheduler-description>,
                FlexibleTimeWindow = scheduleTimeWindow,
                Target = invokeBatchTarget,
                GroupName = <scheduler-group-name>               
            };
            var createScheduleResponse = await schedulerClient.CreateScheduleAsync(createScheduleRequest); 

AWS .NET SDK and/or Package version used

AWSSDK.Scheduler- 3.7.300.16

Targeted .NET Platform

.NET 6.0

Operating System and version

Windows 10

[dscpinheiro]

Are you able to create the schedule using the equivalent AWS CLI command?

Our client is generated from the service model, we don't explicitly throw that validation exception.

[venukalam]

I get the same issue from the equivalent AWS CLI command

"An error occurred (ValidationException) when calling the CreateSchedule operation: batch is not a supported service for a target."

[dscpinheiro]

Thanks for taking a look.

What did you specify for the Amazon.Scheduler.Model.Target.Arn property? I checked and the console uses arn:aws:scheduler:::aws-sdk:batch:submitJob.

If I use this snippet the scheduler is created successfully:

var invokeBatchTarget = new Amazon.Scheduler.Model.Target
{
    Arn = "arn:aws:scheduler:::aws-sdk:batch:submitJob",
    RoleArn = "arn:aws:iam::123456789012:role/test-batch-scheduler-role",
    Input = JsonConvert.SerializeObject(scheduleJobInput)
};

// Existing code

var createScheduleResponse = await schedulerClient.CreateScheduleAsync(createScheduleRequest);
Console.WriteLine(createScheduleResponse.HttpStatusCode); // Outputs OK

[venukalam]

Thanks @dscpinheiro .
Setting Arn to "arn:aws:scheduler:::aws-sdk:batch:submitJob" works.

I was referring to these examples and thought we needed to use the batch queue ARN. I also tried using the job definition as the ARN, but that didn't work.

I didn't realize this is the way.

[dscpinheiro]

No problem, it wasn't intuitive at first for me either.

I left feedback on that documentation page, asking the service team to add more examples where the target is a service operation.