How to add a tag to an AWS-CDK construct

Question

How to add a tag to an AWS-CDK specific construct or even better one tag definition to all ressources created within the stack?

Answer 1

Using the Java SDK:

public class CdkInitClusterApp {
    public static void main(final String[] args) {
        final App app = new App();
        final CdkInitClusterStack cdkInitClusterStack = new CdkInitClusterStack(app, "CdkInitClusterStack");
        Tag.add(cdkInitClusterStack, "Project", "Value");
        app.synth();
    }
}

Then recreate the jar

mvn clean compile package

And run the cdk diff for verify the changes, the output will be similar to the following one:

(base) [alessiosavi@localhost cdk-init-cluster]$ cdk diff
                   CdkInitClusterStack
Resources
[~] AWS::DynamoDB::Table cdk-test-table cdktesttableB0274F47 
 └─ [+] Tags
     └─ [{"Key":"Project","Value":"Value"}]