Amazon States Language - Amazon Step Functions
Amazon Statatatatate
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Amazon States Language

Amazon St at atatateTask StChoice atatatateFail

有关更多信息，请参阅 Amazon 状态语言规范和 Statelint，后者是一个用于验证 Amazon 状态语言代码的工具。

要使用 Amazon States 语言在 Step Functions 控制台上创建状态机，请参阅入门。

注意

如果您在 Step Functions 控制台之外定义状态机，例如在您选择的编辑器中，则必须使用扩展名 .asl.json 保存状态机定义。

Amazon Statatatatate

{
  "Comment": "An example of the Amazon States Language using a choice state.",
  "StartAt": "FirstState",
  "States": {
    "FirstState": {
      "Type": "Task",
      "Resource": "arn:aws:lambda:us-east-1:123456789012:function:FUNCTION_NAME",
      "Next": "ChoiceState"
    },
    "ChoiceState": {
      "Type" : "Choice",
      "Choices": [
        {
          "Variable": "$.foo",
          "NumericEquals": 1,
          "Next": "FirstMatchState"
        },
        {
          "Variable": "$.foo",
          "NumericEquals": 2,
          "Next": "SecondMatchState"
        }
      ],
      "Default": "DefaultState"
    },

    "FirstMatchState": {
      "Type" : "Task",
      "Resource": "arn:aws:lambda:us-east-1:123456789012:function:OnFirstMatch",
      "Next": "NextState"
    },

    "SecondMatchState": {
      "Type" : "Task",
      "Resource": "arn:aws:lambda:us-east-1:123456789012:function:OnSecondMatch",
      "Next": "NextState"
    },

    "DefaultState": {
      "Type": "Fail",
      "Error": "DefaultStateError",
      "Cause": "No Matches!"
    },

    "NextState": {
      "Type": "Task",
      "Resource": "arn:aws:lambda:us-east-1:123456789012:function:FUNCTION_NAME",
      "End": true
    }
  }
}

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