Use an event to run a Lambda function

This example shows you how to configure an EventBridge rule that starts an AWS Lambda function when a package version in a CodeArtifact repository is published, modified, or deleted.

For more information, see Tutorial: Schedule AWS Lambda Functions Using EventBridge in the Amazon EventBridge User Guide.

Create the EventBridge rule

To create a rule that starts a Lambda function, use the put-rule command with the --name and --event-pattern options. The following pattern specifies npm packages in the @types scope in any repository in the my_domain domain.

aws events put-rule --name "MyCodeArtifactRepoRule" --event-pattern \
  '{"source":["aws.codeartifact"],"detail-type":["CodeArtifact Package Version State Change"],
  "detail":{"domainName":["my_domain"],"domainOwner":["111122223333"],"packageNamespace":["types"],"packageFormat":["npm"]}}'

Create the EventBridge rule target

The following command adds a target to the rule that runs the Lambda function when an event matches the rule. For the arn parameter, specify the Amazon Resource Name (ARN) of the Lambda function.

aws events put-targets --rule MyCodeArtifactRepoRule --targets \
  Id=1,Arn=arn:aws:lambda:us-west-2:111122223333:function:MyLambdaFunction

Configure EventBridge permissions

Use the add-permission command to grant permissions for the rule to invoke a Lambda function. For the --source-arn parameter, specify the ARN of the rule that you created earlier in this example.

aws lambda add-permission --function-name MyLambdaFunction \\
  --statement-id my-statement-id --action 'lambda:InvokeFunction' \\
  --principal events.amazonaws.com \\
  --source-arn arn:aws:events:us-west-2:111122223333:rule/MyCodeArtifactRepoRule