How can I set up logging for AWS Lambda using CircleCI?

How can I set up logging for AWS Lambda using CircleCI?

To set up logging for AWS Lambda using CircleCI, you can configure your CircleCI pipeline to deploy your Lambda function with the necessary logging permissions.

What permissions do I need to add for logging?

You need to add the AWSLambdaBasicExecutionRole policy to your Lambda function's execution role to allow logging to CloudWatch.

Can you show me an example of a CircleCI config file for this?

Sure! Here's a basic example of a CircleCI config file that deploys a Lambda function with logging enabled:

version: 2.1
jobs:
  deploy:
    docker:
      - image: circleci/python:3.8
    steps:
      - checkout
      - run:
          name: Deploy to AWS Lambda
          command: |
            aws lambda update-function-code --function-name my-function --zip-file fileb://function.zip
            aws lambda add-permission --function-name my-function --principal logs.amazonaws.com --statement-id log-permission --action 'lambda:InvokeFunction' --source-arn arn:aws:logs:region:account-id:log-group:log-group-name
workflows:
  version: 2
  deploy:
    jobs:
      - deploy

What if I want to log custom messages?

You can use the console.log() function in your Lambda code to log custom messages, which will then appear in CloudWatch Logs.