Multiple Lambda functions from the sam.yml file possible?

I have a situation where I have multiple lambda functions within our API Gateway’s API. I’m new to AWS and learning as much as I can. I am wondering, how would I change the template yaml (sam.yaml) so that we can deploy to any number of lambda functions and not just one as is the case in this lab. Would you create multiple index.js file per lambda function?

• so index1.js -> will map to first lambda function
• index2.js -> second lambda function;
• etc…

And how do I update the sam.yaml file to reflect this change?

Here’s a snippet code of what I’m trying to accomplish:

Resources:
  HelloWorld:
    Type: AWS::Serverless::Function
    Properties:
      Handler: index.handler
      Runtime: nodejs4.3
      Role:
        Fn::ImportValue:
          !Join ['-', [!Ref 'ProjectId', !Ref 'AWS::Region', 'LambdaTrustRole']]
      Events:
        GetEvent:
          Type: Api
          Properties:
            Path: /
            Method: get
        PostEvent:
          Type: Api
          Properties:
            Path: /
            Method: post

.... and more endpoints here to hit more lambda functions? So do I create multiple index.js to map to each individual lambda function?

[jairoVera]

As far as I am aware, you can have multiple JS files, each containing a handler to a different Lambda. The files don’t have to be in the same directory! You can also define the 2nd Lambda function in the same SAM template yaml file where you defined the 1st Lambda function.

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: Outputs the time

Resources:
  TimeFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: firstsample/firstsample.handler   # firstsample.js file is in firstsample direcotory
      Role: !GetAtt BasicAWSLambdaRole.Arn
      Runtime: nodejs6.10
      CodeUri: ./                          # Look for code in the same directory as the output SAM file
      Events:
        MyTimeApi:
          Type: Api
          Properties:
            Path: /TimeResource
            Method: GET
  
  SecondSampleFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: secondsample.handler                  # didn't have to include secondsample directory
      Role: !GetAtt BasicAWSLambdaRole.Arn
      Runtime: nodejs6.10
      CodeUri: ./secondsample           # code is in the secondsample directory, located in same directory
      Events:
        MyTimeApi:
          Type: Api
          Properties:
            Path: /TextResource
            Method: GET

[andrewryan1906]

Guys,

I have the same question.

Really trying to learn serverless and questions like these - on best practices - is making it super difficult. Would love some direction here.