部署Lambda函数时CDK因参数丢失而失败

Question

new Function(this, "TestFunction", {
    handler: "TestFunction.handler",
    code: Code.asset(path.join(__dirname, "lambdas/")),
    runtime: Runtime.NodeJS810
});

当我尝试将它部署到CodeDeploy时，我得到：

Parameters: [TestFunctionCodeS3Bucket, TestFunctionCodeS3VersionKey] must have values (Service: AmazonCloudFormation; Status Code: 400; Error Code: ValidationError;

当我检查生成的CloudFormation时，我可以看到参数：

TestFunctionCodeS3Bucket:
    Type: String
    Description: S3 bucket for asset "AppStack/TestFunction/Code"
TestFunctionCodeS3VersionKey:
    Type: String
    Description: S3 key for asset version "AppStack/TestFunction/Code"

我的理解是，Code.asset应该自己引导这个过程。我是不是错过了一步？

查看docs (https://docs.aws.amazon.com/cdk/latest/guide/serverless_example.html)，它声明您应该创建一个Amazon S3 bucket that contains the Lambda function code.，但是在示例中没有任何地方可以显式地看到这一点。所以我以为这是含蓄的。

产生的CFN：

Parameters:
  TestFunctionCodeS3BucketE8C956AE:
    Type: String
    Description: S3 bucket for asset "AppStack/TestFunction/Code"
  TestFunctionCodeS3VersionKey6B3F3155:
    Type: String
    Description: S3 key for asset version "AppStack/TestFunction/Code"
Resources:
  TestFunctionServiceRole6ABD93C7:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Statement:
          - Action: sts:AssumeRole
            Effect: Allow
            Principal:
              Service: lambda.amazonaws.com
        Version: "2012-10-17"
      ManagedPolicyArns:
        - Fn::Join:
            - ""
            - - "arn:"
              - Ref: AWS::Partition
              - :iam::aws:policy/service-role/AWSLambdaBasicExecutionRole
    Metadata:
      aws:cdk:path: AppStack/TestFunction/ServiceRole/Resource
  TestFunction22AD90FC:
    Type: AWS::Lambda::Function
    Properties:
      Code:
        S3Bucket:
          Ref: TestFunctionCodeS3BucketE8C956AE
        S3Key:
          Fn::Join:
            - ""
            - - Fn::Select:
                  - 0
                  - Fn::Split:
                      - "||"
                      - Ref: TestFunctionCodeS3VersionKey6B3F3155
              - Fn::Select:
                  - 1
                  - Fn::Split:
                      - "||"
                      - Ref: TestFunctionCodeS3VersionKey6B3F3155
      Handler: TestFunction.handler
      Role:
        Fn::GetAtt:
          - TestFunctionServiceRole6ABD93C7
          - Arn
      Runtime: nodejs8.10
    DependsOn:
      - TestFunctionServiceRole6ABD93C7
    Metadata:
      aws:cdk:path: AppStack/TestFunction/Resource
      aws:asset:path: /Volumes/Unix/AMCC/src/AMCConsole/packages/infrastructure/lib/lambdas/mars
      aws:asset:property: Code
  CDKMetadata:
    Type: AWS::CDK::Metadata
    Properties:
      Modules: aws-cdk=0.22.0,@aws-cdk/assets=0.22.0,@aws-cdk/assets-docker=0.22.0,@aws-cdk/aws-apigateway=0.22.0,@aws-cdk/aws-cloudformation=0.22.0,@aws-cdk/aws-cloudfront=0.22.0,@aws-cdk/aws-cloudwatch=0.22.0,@aws-cdk/aws-codebuild=0.22.0,@aws-cdk/aws-codecommit=0.22.0,@aws-cdk/aws-codepipeline=0.22.0,@aws-cdk/aws-codepipeline-api=0.22.0,@aws-cdk/aws-cognito=0.22.0,@aws-cdk/aws-ec2=0.22.0,@aws-cdk/aws-ecr=0.22.0,@aws-cdk/aws-events=0.22.0,@aws-cdk/aws-iam=0.22.0,@aws-cdk/aws-kms=0.22.0,@aws-cdk/aws-lambda=0.22.0,@aws-cdk/aws-route53=0.22.0,@aws-cdk/aws-s3=0.22.0,@aws-cdk/aws-s3-notifications=0.22.0,@aws-cdk/aws-serverless=0.22.0,@aws-cdk/aws-sns=0.22.0,@aws-cdk/aws-sqs=0.22.0,@aws-cdk/cdk=0.22.0,@aws-cdk/cx-api=0.22.0,jsii-runtime=node.js/v11.12.0

Answer 1

你好，克里斯，我也遇到了同样的问题，下面是我是如何解决的：

PATH/||YOUR_ASSET_KEY

• 检查了在输出中创建的manifest.json以获得参数的键(我用jq提取了它，并从if中创建了一个配置文件)，
• S3键需要这样的格式