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  4. Implementing a Serverless DevOps Pipeline With AWS Lambda and CodePipeline

Implementing a Serverless DevOps Pipeline With AWS Lambda and CodePipeline

One computing service provided by AWS is AWS Lambda, which executes code in response to events and can adjust its capacity to accommodate the needs of the application.

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Charles Ituah user avatar
Charles Ituah
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May. 27, 23 · Analysis
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AWS Lambda is a popular serverless platform that allows developers to run code without provisioning or managing servers. In this article, we will discuss how to implement a serverless DevOps pipeline using AWS Lambda and CodePipeline.

What Is AWS Lambda?

AWS Lambda is a computing service that runs code in response to events and automatically scales to meet the demand of the application. Lambda supports several programming languages, including Node.js, Python, Java, Go, and C#. CodePipeline is a continuous delivery service that automates the build, test, and deployment of applications. CodePipeline integrates seamlessly with other AWS services, such as CodeCommit, CodeBuild, CodeDeploy, and Lambda.

Creation of the Lambda Function

To implement a serverless DevOps pipeline, we first need to create a Lambda function that will act as a build step in CodePipeline. The Lambda function will be responsible for building the application code and creating a deployment package. The deployment package will be stored in an S3 bucket, which will be used as an input artifact for the deployment step.

Implementing the CodePipeline

The next step is to create a CodePipeline pipeline that will orchestrate the build, test, and deployment process. The pipeline will consist of three stages: Source, Build, and Deploy. The Source stage will pull the application code from a Git repository, such as CodeCommit. The Build stage will invoke the Lambda function to build the application code and create a deployment package. The Deploy stage will deploy the application to a target environment, such as an EC2 instance or a Lambda function.

The Build Stage

In the Build stage, the Lambda function will be triggered by a CodePipeline event. The event will contain information about the source code, such as the Git commit ID and the branch name. The Lambda function will use this information to fetch the source code from the Git repository and build the application. The Lambda function will then create a deployment package, which will be stored in an S3 bucket. The deployment package will contain the application code, as well as any dependencies, configuration files, and scripts required to deploy the application.

The Deploy Stage

In the Deploy stage, we will use AWS CodeDeploy to deploy the application to a target environment. CodeDeploy is a deployment service that automates the deployment of applications to Amazon EC2 instances, Lambda functions, or on-premises servers. CodeDeploy uses deployment groups to deploy applications to one or more instances in a target environment. The deployment group can be configured to perform rolling deployments, blue/green deployments, or custom deployment strategies.

Using CodeDeploy

We can use CodeDeploy to deploy the application to a Lambda function by creating a deployment group that targets the Lambda function. The deployment group can be configured to use the deployment package created in the Build stage as the input artifact. CodeDeploy will then create a new version of the Lambda function and update the alias to point to the new version. This will ensure that the new version is deployed gradually and that the old version is still available until the new version is fully deployed.

Conclusion

In conclusion, implementing a serverless DevOps pipeline with AWS Lambda and CodePipeline can help to streamline the software delivery process, reduce costs and improve scalability. By using Lambda as a build step in CodePipeline, we can automate the build process and create deployment packages that can be easily deployed to a target environment using CodeDeploy. With continuous delivery, we can ensure that new features and bug fixes are delivered to customers quickly and reliably.

AWS Lambda DevOps Pipeline (software) Serverless computing

Published at DZone with permission of Charles Ituah. See the original article here.

Opinions expressed by DZone contributors are their own.

Related

  • Building a Scalable ML Pipeline and API in AWS
  • From Zero to Scale With AWS Serverless
  • Implementing and Deploying a Real-Time AI-Powered Chatbot With Serverless Architecture
  • When You Need More Power Than a Lambda Provides

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