aws-lambda - 在内联 Lambda Nodejs 代码中使用 GetAtt

Question

我创建了一个简单的云形成模板，它将一个 SQS 队列的“消息拆分器”组合在一起，并将消息分发到其他 4 个队列中。

Cloudformation 模板的相关部分是

ProdSqsDistributor:
  Type: 'AWS::Lambda::Function'
  Properties:
    Code:
      ZipFile: |
        var AWS = require('aws-sdk');
        var sqs = new AWS.SQS({region : 'us-east-1'});
        var sns = new AWS.SNS({region : 'us-east-1'});

        exports.handler = async (event) => {
          //console.log('Received event:', JSON.stringify(event, null, 2));
          const promises = event.Records.map( async message => {
              var messageId = message.messageId;
              var body = message.body;
              console.log('SQS message %s: %j', messageId, body);
              if (body.indexOf('App\\\\Jobs\\\\CNC\\\\ConvertFile') !== -1){
                console.log('cnc1 matched');

                await sqs.sendMessage({MessageBody: body, QueueUrl: '!GetAtt ProdCnc.Arn'})


...

ProdCnc:
  Type: 'AWS::SQS::Queue'
  Properties:
    DelaySeconds: 0
    VisibilityTimeout: 120
    ReceiveMessageWaitTimeSeconds: 20

根据模板，我想将目标队列的 arn 嵌入到内联 Lambda Nodejs 代码中。

Cloudformation 模板运行成功，但队列拆分不起作用。当我查看创建的 lambda 函数时，似乎 GetAtt 调用尚未解析:

我正在寻找一种在内联 Lambda 代码中解析/执行 GetAtt 调用的方法。

Answer 1

尝试 !Sub:

ProdSqsDistributor:
  Type: 'AWS::Lambda::Function'
  Properties:
    Code:
      ZipFile: !Sub
        - |
          var AWS = require('aws-sdk');
          var sqs = new AWS.SQS({region : 'us-east-1'});
          var sns = new AWS.SNS({region : 'us-east-1'});

          exports.handler = async (event) => {
            //console.log('Rcvd event:', JSON.stringify(event, null, 2));
            const promises = event.Records.map( async message => {
              var messageId = message.messageId;
              var body = message.body;
              console.log('SQS message %s: %j', messageId, body);
              if (body.indexOf('App\\\\Jobs\\\\CNC\\\\ConvertFile') !== -1){
                console.log('cnc1 matched');

                await sqs.sendMessage({MessageBody: body, QueueUrl: '${ProdCncArb}'})
        - ProdCncArb: !GetAtt ProdCnc.Arn