Amazon web services AWS Step功能-在条件下停止状态机执行

我附上了我的状态机的外观，并分享了它的定义以供参考。

服务状态重试等待

状态在调用

服务状态重试

状态之前等待60秒，该状态调用lambda检查服务是否在

服务创建？

状态下创建

{
  "Comment": "Step Function for Deployment",
  "StartAt": "Start",
  "States": {
    "Start": {
      "Type": "Pass",
      "Next": "Service Status"
    },
    "Service Status": {
      "Type": "Parallel",
      "Branches": [
        {
          "StartAt": "Service Status Check",
          "States": {
            "Service Status Check": {
              "Type": "Task",
              "Resource": "arn:aws:states:::lambda:invoke",
              "Parameters": {
                "FunctionName": "arn:aws:lambda:us-west-2:<acc-id>:function:<fn-name>",
                "Payload": {
                  "stepFunctionState.$": "$$.State.Name",
                  "requestContext": {
                    "stepFunction": true,
                    "accountId": "<acc-id>"
                  },
                  "resource.$": "States.Format('{}/srvc', $$.Execution.Input.resource)",
                  "path.$": "States.Format('{}/srvc', $$.Execution.Input.path)",
                  "httpMethod": "POST",
                  "pathParameters.$": "$$.Execution.Input.pathParameters",
                  "body.$": "$$.Execution.Input.body",
                  "isBase64Encoded": false,
                  "headers": {},
                  "queryStringParameters": null
                }
              },
              "ResultPath": "$.taskresult",
              "Next": "Service Created?"
            },
            "Service Created?": {
              "Type": "Choice",
              "Choices": [
                {
                  "Variable": "$.taskresult.Payload.body",
                  "StringMatches": "*\"isCreated\": \"false\"*",
                  "Next": "Service Status Retry Wait"
                },
                {
                  "Variable": "$.taskresult.Payload.body",
                  "StringMatches": "*\"isCreated\": \"true\"*",
                  "Next": "Service Status Check End"
                }
              ],
              "Default": "Service Status Retry Wait"
            },
            "Service Status Retry Wait": {
              "Type": "Wait",
              "Seconds": 60,
              "Next": "Service Status Retry"
            },
            "Service Status Retry": {
              "Type": "Task",
              "Resource": "arn:aws:states:::lambda:invoke",
              "Parameters": {
                "FunctionName": "arn:aws:lambda:us-west-2:<acc-id>:function:<func-name>",
                "Payload": {
                  "stepFunctionState.$": "$$.State.Name",
                  "requestContext": {
                    "stepFunction": true,
                    "accountId": "<acc-id>"
                  },
                  "resource.$": "States.Format('{}/srvc', $$.Execution.Input.resource)",
                  "path.$": "States.Format('{}/srvc', $$.Execution.Input.path)",
                  "httpMethod": "POST",
                  "pathParameters.$": "$$.Execution.Input.pathParameters",
                  "body.$": "$$.Execution.Input.body",
                  "isBase64Encoded": false,
                  "headers": {},
                  "queryStringParameters": null
                }
              },
              "ResultPath": "$.taskresult",
              "Next": "Service Created?"
            },
            "Service Status Check End": {
              "Type": "Pass",
              "End": true
            }
          }
        }
      ],
      "Next": "End"
    },
    "End": {
      "Type": "Pass",
      "End": true
    }
  }
}

{
“注释”：“部署的步骤功能”，
“开始”：“开始”，
“国家”：{
“开始”：{
“类型”：“通过”，
“下一步”：“服务状态”
},
“服务状态”：{
“类型”：“并行”，
“分支机构”：[
{
“StartAt”：“服务状态检查”，
“国家”：{
“服务状态检查”：{
“类型”：“任务”，
“资源”：“arn:aws:states:：：lambda:invoke”，
“参数”：{
“FunctionName”：“arn:aws:lambda:us-west-2:
您有两个选项：

通过保留重试次数并在您选择的状态下进行检查，自行处理重试：


使用内置错误/重试。为此，请检查是否创建了服务，并抛出错误并将其包装为并行状态，重试次数为5：


{
“注释”：“部署的步骤功能”，
“开始”：“开始”，
“国家”：{
“开始”：{
“类型”：“通过”，
“下一步”：“服务状态”
},
“服务状态”：{
“类型”：“并行”，
“分支机构”：[
{
“StartAt”：“服务状态检查”，
“国家”：{
“服务状态检查”：{
“类型”：“任务”，
“资源”：“arn:aws:states:：：lambda:invoke”，
“参数”：{
“函数名”：”arn:aws:lambda:us-west-2:
似乎您可以使用内置在Step函数中的错误/重试功能，而不是重新创建自己的逻辑。它解释了在错误后重试。但是，在我的情况下，我不希望出现错误。我需要在重试状态执行5次后停止。我要说的是，您可以配置您的代码如果服务尚未启动，hat将检查服务状态以抛出错误。然后，您将能够利用Step函数提供的内置重试处理功能。
{
  "Comment": "Step Function for Deployment",
  "StartAt": "Start",
  "States": {
    "Start": {
      "Type": "Pass",
      "Next": "Service Status"
    },
    "Service Status": {
      "Type": "Parallel",
      "Branches": [
        {
          "StartAt": "Service Status Check",
          "States": {
            "Service Status Check": {
              "Type": "Task",
              "Resource": "arn:aws:states:::lambda:invoke",
              "Parameters": {
                "FunctionName": "arn:aws:lambda:us-west-2:<acc-id>:function:<fn-name>",
                "Payload": {
                  "stepFunctionState.$": "$$.State.Name",
                  "requestContext": {
                    "stepFunction": true,
                    "accountId": "<acc-id>"
                  },
                  "resource.$": "States.Format('{}/srvc', $$.Execution.Input.resource)",
                  "path.$": "States.Format('{}/srvc', $$.Execution.Input.path)",
                  "httpMethod": "POST",
                  "pathParameters.$": "$$.Execution.Input.pathParameters",
                  "body.$": "$$.Execution.Input.body",
                  "isBase64Encoded": false,
                  "headers": {},
                  "queryStringParameters": null
                }
              },
              "ResultPath": "$.taskresult",
              "Next": "Service Created?"
            },
            "Service Created?": {
              "Type": "Choice",
              "Choices": [
                {
                  "Variable": "$.taskresult.Payload.body",
                  "StringMatches": "*\"isCreated\": \"false\"*",
                  "Next": "Throw Error"
                },
                {
                  "Variable": "$.taskresult.Payload.body",
                  "StringMatches": "*\"isCreated\": \"true\"*",
                  "Next": "Succeed"
                }
              ],
              "Default": "Throw Error"
            },
            "Throw Error": {
              "Type": "Fail"
            },
            "Succeed": {
              "Type": "Pass",
              "End": true
            }
          }
        }
      ],
      "Next": "End",
      "Retry": [
        {
          "ErrorEquals": [
            "States.ALL"
          ],
          "IntervalSeconds": 3,
          "MaxAttempts": 5,
          "BackoffRate": 1.5
        }
      ]
    },
    "End": {
      "Type": "Pass",
      "End": true
    }
  }
}