class TestLambdaAction extends cdkp.Step implements cdkp.ICodePipelineActionFactory {
  constructor (
    private readonly scope: Construct,
    id: string,
    private readonly userParameters?: { [key: string]: any }) {
    super(id);
  }

  public produceAction (stage: codePipeline.IStage, _options: cdkp.ProduceActionOptions): cdkp.CodePipelineActionFactoryResult {
    const lambdaPrefix = `arn:aws:lambda:${Stack.of(this.scope).region}:${Stack.of(this.scope).account}`;
    const lambdaf = lambda.Function.fromFunctionArn(this.scope, 'Lambda', `${lambdaPrefix}:function:TestLambda`);
    stage.addAction(new actions.LambdaInvokeAction({
      actionName: 'TestAction',
      lambda: lambdaf,
      userParameters: this.userParameters,
    }));
    return { runOrdersConsumed: 1 };
  }
}
  const producer = new cdkp.CodeBuildStep('Produce', {
    commands: ['export MY_VAR=hello'],
  });

  const consumer = new TestLambdaAction(pipelineStack, 'TestLambda', {
    THE_VAR: producer.exportedVariable('MY_VAR'),
  });