node.js - 将 NodeJS 运行时中的变量传回 CloudFormation

问题描述

我有一个 CF 模板，它在 Javascript 中使用无服务器函数来实例化 AWS Connect 实例，因为 Connect 没有实际的 CF 资源。我使用环境变量将值从 CF 传递到内联 Javascript。现在我需要反过来：从 JS 中提取其中一些值并将它们传递回 CF 模板的其他部分。那么，问题是，如何将变量从 Javascript 传递到 CloudFormation？我怀疑我需要使用 Systems Manager Parameter store 之类的东西，但也许有更简单的方法？具体来说，我需要以下代码段中的值“serviceRole”可传递给其他 CF 资源：

CreateConnectInstance:
Type: AWS::Serverless::Function
Properties:
  Handler: index.handler
  Runtime: nodejs12.x
  Description: Invoke a function to create an AWS Connect instance.
  MemorySize: 128
  Timeout: 8
  Role: !GetAtt LambdaExecutionRole.Arn
  Tracing: Active
  Layers:
    - !Sub "arn:aws:lambda:us-east-1:${AWS::AccountId}:layer:node_sdk:1"
  Environment:
    Variables:
      IdentityManagementType:
        Ref: IdentityManagementType
      InboundCallsEnabled:
        Ref: InboundCallsEnabled
      InstanceAlias:
        Ref: InstanceAlias
      OutboundCallsEnabled:
        Ref: OutboundCallsEnabled
      Region:
        Ref: Region
      #Optional Values
      ClientToken: !If
        - HasClientToken
        - !Ref ClientToken
        - !Ref "AWS::NoValue"
      DirectoryId: !If
        - HasClientToken
        - !Ref ClientToken
        - !Ref "AWS::NoValue"

  InlineCode: |
    var AWS = require('aws-sdk');
    var response = require('cfn-response');
    var connect = new AWS.Connect({apiVersion: '2017-08-08', region: process.env.Region});
    exports.handler = (event, context) => {
      console.log("Request Received:\n" + JSON.stringify(event));
      var instanceId;
      var serviceRole;
      var isInboundCallsEnabled = (process.env.InboundCallsEnabled == 'true');
      var isOutboundCallsEnabled = (process.env.OutboundCallsEnabled == 'true');
      var params = {
        InboundCallsEnabled: isInboundCallsEnabled,
        OutboundCallsEnabled: isOutboundCallsEnabled,
        IdentityManagementType: process.env.IdentityManagementType,
        ClientToken: process.env.ClientToken,
        DirectoryId: process.env.DirectoryId,
        InstanceAlias: process.env.InstanceAlias
      };
      connect.createInstance(params, function (err, data) {
        if (err) {
          let responseData = { Error: "Create Instance Failed" };
          console.log(responseData.Error + ":\n", err);
          response.send(event, context, "FAILED", responseData);
          instanceId = data.Id;
        }
        else {
          console.log("Connect Instance Creation Successful");
          console.log(JSON.stringify(data));
          response.send(event, context, "SUCCESS", data);
        }
      });
      connect.describeInstance({InstanceId: instanceId}, function (err,data) {
        console.log(JSON.stringify(data));
        serviceRole = data.Instance.ServiceRole; // ***NEED TO EXTRACT THIS VALUE to CF***
      });
    }

它通过以下方式在同一模板中调用：

InvokeLambda:
  Type: AWS::CloudFormation::CustomResource
  DependsOn: CreateConnectInstance
  Version: "1.0"
  Properties:
    ServiceToken: !Sub ${CreateConnectInstance.Arn}

标签： node.jsamazon-web-servicesaws-lambdaamazon-cloudformationaws-serverless

node.js - 将 NodeJS 运行时中的变量传回 CloudFormation

问题描述

解决方案

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