CDK State Machine

index.ts

const STATUS = "$.status"
const RETRY_SECONDS = "$.retrySeconds"
const PENDING = "pending"
const PROGRESS = "in-progress"
const FAILED = "failed"
const COMPLETE = "complete"

const setPending = stepFunction.setStatus(this, props.table, PENDING);
const setProgress = stepFunction.setStatus(this, props.table, PROGRESS);
const setSuccess = stepFunction.setStatus(this, props.table, COMPLETE);
const setFailed = stepFunction.setStatus(this, props.table, FAILED);
const waitForNSeconds = this.waitTask("retry seconds", RETRY_SECONDS);

const definition = this.mapperTask()
  .next(setPending)
  .next(waitForNSeconds)
  .next(setProgress)
  .next(this.deliverTransactionTask())
  .next(
    new sfn.Choice(this, "Delivery success?")
      .when(sfn.Condition.stringEquals(STATUS, COMPLETE), setComplete)
      .when(sfn.Condition.stringEquals(STATUS, FAILED), setFailed)
      .otherwise(setPending)
  );