lambda-version-alias/template.yaml at main · nasratk/lambda-version-alias · GitHub

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AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31

Parameters:
  FunctionName:
    Type: String
    Default: MyLambdaFunction

  CreateNewVersion:
    Type: String
    Default: 'true'
    AllowedValues:
      - 'true'
      - 'false'

  ProdAliasVersion:
    Type: String
    Default: '$LATEST'

Conditions:
  ShouldCreateNewVersion: !Equals
    - !Ref CreateNewVersion
    - 'true'

Resources:
  MyLambdaFunction:
    Type: 'AWS::Serverless::Function'
    Properties:
      FunctionName: !Ref FunctionName
      Handler: index.handler
      Runtime: nodejs14.x
      CodeUri: src/
      MemorySize: 128
      Timeout: 10
      Policies:
        - AWSLambdaBasicExecutionRole

  LambdaVersion:
    Type: AWS::Lambda::Version
    Condition: ShouldCreateNewVersion
    Properties:
      FunctionName: !Ref MyLambdaFunction

  ProdAlias:
    Type: AWS::Lambda::Alias
    DependsOn: LambdaVersion
    Properties:
      FunctionName: !Ref MyLambdaFunction
      FunctionVersion: !If
        - ShouldCreateNewVersion
        - !GetAtt LambdaVersion.Version
        - !Ref ProdAliasVersion
      Name: prod

  DevAlias:
    Type: AWS::Lambda::Alias
    Properties:
      FunctionName: !Ref MyLambdaFunction
      FunctionVersion: '$LATEST'
      Name: dev