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Npm serverless override lambda function how to#
Npm serverless override lambda function install#
Npm serverless override lambda function code#
Npm serverless override lambda function zip#

Path to parent directory of .Ĭreates an S3 bucket with the name provided.

exports = page => All plugin configuration options Plugin config key You also may want to add memory_size and timeout arguments or aws_lambda_function_event_invoke_config resource if you want to use a non-default configuration for the Lambda function.Const compat = require ( "serverless-nextjs-plugin/aws-lambda-compat" ) module. Here, we have attached the role to the function and added an explicit dependency on the log group.

Npm serverless override lambda function code#

In this article, I will put everything into a single module, but you might want to split the code to different reusable modules, for instance, you could create modules for CloudWatch log group and API Gateway related resources and include them to the main module. The module we’ll implement will work for Terraform v0.11.13 (may work for v0.12 too, but I didn’t test that) and AWS plugin v2.56.0 (some of the AWS resources are not supported in some earlier plugin versions). So, let’s start to create a Terraform module for deploying our Lambda function. So you can remove them after you’ve moved your function.

the /event/push POST endpoint integrated with the functionĪfter we implement the Lambda function with Terraform, we will have pretty much the same set of resources, except for the:.

A policy allowing the CloudWatch log group to create log streams and put log events to these streams.

An “assume role” policy with a permission for AWS Lambda service to assume this role.

Role attached to the function with the following policies:.

CloudWatch log group with log streams for each instance of the function.

Lambda layer with Node.js dependencies, belonging to the function.

Lambda function, belonging to the application.

Npm serverless override lambda function zip#

S3 bucket where zip files of the function are stored.CloudFormation template used to provision the stack.

This would create the following AWS resources:

A new version is published for our Lambda function.

The CloudFormation stack is updated with the new CloudFormation template.

Any IAM Roles, Functions, Events and Resources are added to the CloudFormation template.

Zip files are uploaded to the S3 bucket.

The hashes of the files are compared against the previous deployment (if any) and the deployment process is terminated if all file hashes are the same (this would mean we’re trying to deploy the same code).

The code of the function is packaged into zip files (in our case this would be 2 files - one for the function itself and another one for the Node.js layer).

An S3 bucket is created (if this is the first deployment), this is where zip files of the Lambda function code will be stored.

An AWS CloudFormation template is created from our serverless.yml.

The project structure could look like this:įor those who are not familiar with how Serverless Framework performs deployments, I will briefly describe the process, so that you can get an idea of how it works in general and which AWS resources are involved: Let’s also assume that the function has a layer with Node.js runtime dependencies. So let’s assume we’re given a Serverless application deployed in AWS, this could be simply an HTTP(s) endpoint that redirects requests somewhere else.

Npm serverless override lambda function install#

The implementation also includes a special case of running npm install from Terraform when deploying. Those who are going to create a new Lambda function and don’t want to use Serverless Framework for the same reasons as above.This might be the case when everything else is already managed by Terraform, except for the Lambda function, which was historically developed as a Serverless application, so you want to consolidate your infrastructure and use Terraform for everything. Those who already use Serverless Framework to deploy a Lambda function in AWS, but want to use Terraform to manage it.Those who are not too familiar with Lambda function development and deployment process and want to get a quick overview of it and compare how this could be done using Serverless and Terraform.

Npm serverless override lambda function how to#

In this article, I will describe how to move an AWS Lambda function deployed as a Serverless application into a Terraform module.