amazon-web-services - Retry and Catch on AWS Step Function 任务

Question

对于 StepFunctions，我们能否让 Retry 和 Catch 一起处理耗尽的情况？

这是我的用例

1. 工作失败
2. 重试
3. 重试失败，转到 Catch
4. 捕获所有错误，移至下一个作业，并更新数据库表以将此作业标记为失败(另一项任务)
5. 或者在第一次运行或重试成功后，转到下一个作业

    "ExecuteMyJob": {
            "Type": "Task",
            "Resource": "arn:aws:states:::glue:startJobRun.sync",
            "Parameters": {
                "JobName.$": "$.jobName",
                "Arguments.$": "$.jobArguments"
            },
            "Retry" : [{
                "ErrorEquals": [ "States.TaskFailed", "States.Runtime" ],
                "MaxAttempts": 3,
                "IntervalSeconds": 60,
                "BackoffRate": 2
            }],
            "Catch": [{
                "ErrorEquals": [ "States.ALL" ],
                "Next": "MarkJobFailOnDbTable"
            }],
            "Next": "NextJobOnPreviousSuccess"
        }

Answer 1

Step Functions 让您可以同时使用 Retry 和 Catch:

https://docs.aws.amazon.com/step-functions/latest/dg/concepts-error-handling.html

该链接中的复杂重试场景示例与您的示例类似:

"X": {
   "Type": "Task",
   "Resource": "arn:aws:states:us-east-1:123456789012:task:X",
   "Next": "Y",
   "Retry": [ {
      "ErrorEquals": [ "ErrorA", "ErrorB" ],
      "IntervalSeconds": 1,
      "BackoffRate": 2.0,
      "MaxAttempts": 2
   }, {
      "ErrorEquals": [ "ErrorC" ],
      "IntervalSeconds": 5
   } ],
   "Catch": [ {
      "ErrorEquals": [ "States.ALL" ],
      "Next": "Z"
   } ]
}