The AWS::Serverless transform, which is a macro hosted by CloudFormation, takes an entire template written in the AWS Serverless Application Model (AWS SAM) syntax and transforms and expands it into a compliant CloudFormation template. For more information about serverless applications and AWS SAM, see
Deploying Lambda-based applications in the AWS Lambda Developer Guide and AWS SAM resource and property reference in the AWS Serverless Application Model Developer Guide. In the
following example, the template uses AWS SAM syntax to simplify the declaration of a Lambda function and its execution role. Transform: AWS::Serverless-2016-10-31
Resources:
MyServerlessFunctionLogicalID:
Type: AWS::Serverless::Function
Properties:
Handler: index.handler
Runtime: nodejs8.10
CodeUri: 's3://testBucket/mySourceCode.zip'
When creating a change set from the template, CloudFormation expands the AWS SAM syntax, as
defined by the transform. The processed template expands the AWS::Serverless::Function resource, declaring an AWS Lambda function and an execution role.AWS::Serverless transform
{ "Resources": { "MyServerlessFunctionLogicalID": { "Type": "AWS::Lambda::Function", "Properties": { "Handler": "index.handler", "Code": { "S3Bucket": "testBucket", "S3Key": "mySourceCode.zip" }, "Role": { "Fn::GetAtt": ["FunctionNameRole", "Arn"] }, "Runtime": "nodejs8.10" } }, "FunctionNameRole": { "Type": "AWS::IAM::Role", "Properties": { "ManagedPolicyArns": ["arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"], "AssumeRolePolicyDocument": { "Version": "2012-10-17", "Statement": [{ "Action": ["sts:AssumeRole"], "Effect": "Allow", "Principal": { "Service": ["lambda.amazonaws.com"] } }] } } } } }
Syntax
The value for the transform declaration must be a literal string. You can't use a parameter or function to specify a transform value. The following snippet is an example of a transform declaration:
JSON
"Transform" : "AWS::Serverless-2016-10-31"
YAML
Transform: "AWS::Serverless-2016-10-31"
The AWS::Serverless transform, which is a macro hosted by CloudFormation, takes an entire template written in the Amazon Serverless Application Model (Amazon SAM) syntax and transforms and expands it into a compliant CloudFormation template. For more information about serverless applications and Amazon SAM, see Deploying Lambda-based applications in the Amazon Lambda Developer Guide and Amazon SAM resource and property reference in the Amazon Serverless Application Model Developer Guide.
In the following example, the template uses Amazon SAM syntax to simplify the declaration of a Lambda function and its execution role.
Transform: AWS::Serverless-2016-10-31 Resources: MyServerlessFunctionLogicalID: Type: AWS::Serverless::Function Properties: Handler: index.handler Runtime: nodejs8.10 CodeUri: 's3://testBucket/mySourceCode.zip'When creating a change set from the template, CloudFormation expands the Amazon SAM syntax, as defined by the transform. The processed template expands the AWS::Serverless::Function resource, declaring an Amazon Lambda function and an execution role.
Syntax
The value for the transform declaration must be a literal string. You can't use a parameter or function to specify a transform value. The following snippet is an example of a transform declaration: