aws-lambda-nodejs

[smaud]

:question: General Issue

The Question

aws-lambda-nodejs does not have an example of integration with CI/CD and codeDeploy blue/green/canary pipeline.

Lambda example (https://docs.aws.amazon.com/cdk/latest/guide/codepipeline_example.html?shortFooter=true) requires a Lambda property of code to be present but this is not presented on aws-lambda-nodejs.

  code: this.lambdaCode,

Please provide similar example.

Environment

• **CDK CLI Version:1.79
• **Module Version:.179
• **Node.js Version:12.x
• **OS:all
• **Language (Version):ts4.1.3

Other information

[redbaron]

aws-lambda-nodejs module documentation provides comprehensive example how to setup function: https://docs.aws.amazon.com/cdk/api/latest/docs/aws-lambda-nodejs-readme.html

Pipeline example can then be ammended to use aws-lambda-nodejs.NodejsFunction instead of lambda.Function. It is also likely you wont need to have a separate Lambda build step, but I haven't tried it myself

[sholtomaud]

Unfortunately the Pipeline example uses the code property of lambda, whereas aws-lambda-nodejs does not have this property and expects a file. If you have an example showing how to put aws-lambda-nodejs into a blue/green CI/CD please post it. Thanks! :)

[redbaron]

I don't have example at hand, but did you try to replace these in lib/lambda-stack.ts:

    this.lambdaCode = lambda.Code.fromCfnParameters();

    const func = new lambda.Function(this, 'Lambda', {
      code: this.lambdaCode,
      handler: 'index.main',
      runtime: lambda.Runtime.NODEJS_10_X,
      description: `Function generated on: ${new Date().toISOString()}`,
    });

    const alias = new lambda.Alias(this, 'LambdaAlias', {
      aliasName: 'Prod',
      version: func.currentVersion,
    });

With:

  const func = new lambda.NodejsFunction(this, 'MyFunction', {
     entry: '/path/to/my/file.ts', // accepts .js, .jsx, .ts and .tsx files
     handler: 'myExportedFunc'
  });

    const alias = new lambda.Alias(this, 'LambdaAlias', {
      aliasName: 'Prod',
      version: func.currentVersion,
    });

As for how to implement Blue/Green deployments with CodePipeline, I think this is more of a question for amazon forum, reddit or support as it is not related to CDK directly.

[sholtomaud]

Yes I did - but how do you get the path to the file if it hasn't been built yet by codebuild??

[redbaron]

My understanding is that it "builds" it for you, that is code resides somewhere within CDK app and aws-lambda-nodejs takes care of packaging it as a zip file and creating Lambda function for you

[sholtomaud]

how would you do blue/green codedeploy?

Mr Sholto Maud

[redbaron]

That's more of a codepipeline question, rather than CDK, I dont use former so can't help much. Maybe other CDK users can share their experience.

[sholtomaud]

Nah, definitely a CDK question.

You need CDK CI/CD to deploy nodejs lambda blue/green.

[tim-finnigan]

This issue hasn't received any activity in a long time. If there are still requests an example then I suggest creating an issue or PR in this repository: https://github.com/aws-samples/aws-cdk-examples/issues.

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[RiFrost]

@sholtomaud Did you find a solution for this yet? Facing a similar problem, where I want to setup a CI/CD Pipeline where in the deploy stage a lambda Function should be deployt from code which is being build the step before and put into an artifact.

[sholtomaud]

Yes I did. I don't have the code on me however.

[enheit]

I also can't find an example of how to create a CI/CD pipeline with @aws-cdk/aws-lambda-nodejs module. If someone has a link to a resource that explains it, could you please share it?

[sholtomaud]

AWS need to lift their game, its their product.