Week of Java: Part 2: Setting Up Your Local Development Environment

• LocalStack

  154 52,289 9.9 Python

  💻 A fully functional local AWS cloud stack. Develop and test your cloud & Serverless apps offline

  

As I already mentioned, you can follow the official step by step guide from LocalStack Github and install it using pip. If you’re using this option, please create a virtual environment for that. In my case, I use mini-conda to manage all my python projects. However, I prefer to use a pure docker option. To do that, you can download LocalStack’s docker-compose yaml and put it in the root of your project. In my case I copied something like this:

• shadow

  15 3,562 0.0 Groovy

  Gradle plugin to create fat/uber JARs, apply file transforms, and relocate packages for applications and libraries. Gradle version of Maven's Shade plugin.

Behind the scenes, Shadow creates a FatJar with all the things we may need in the future.

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• emulambda

  1 - -

That situation made me realize that I needed a local solution. Currently in the market you can find a lot of options like Emulambda or Eucalyptus. But maybe the most complete and stable (at least for AWS) products in the market are SAM Local and LocalStack. But which one should I use? Maybe both? What are the pros and cons of each one?

• aws-sam-local

  1 5,966 9.5 Python

  Discontinued CLI tool to build, test, debug, and deploy Serverless applications using AWS SAM [Moved to: https://github.com/aws/aws-sam-cli]

  

SAM Local is a Beta tool from AWS that helps us manage Serverless applications. With this tool we can use a template.yml file with all the definitions that we need and the tool will make the rest. From emulating events to estimating cost per request, SAM Local has it all. The only issue we faced was the fact that we were not using SAM as our serverless framework. But no problem at all, there’s already a Serverless plugin to help you with that! The next sections are based on the article “Go Serverless with SAM for local dev & test”, so thanks to Erica Windish for sharing her personal experience. In my case, I’m going to explain a bit more in detail, as well to give you specific tips for Kotlin/Java projects.

• serverless-sam

  1 149 0.0 JavaScript

  Serverless framework plugin to export AWS SAM templates for a service

Now we are ready to install plugins! Let’s try serverless-sam, a plugin that converts serverless.yml **files to **template.yml (the one required by SAM Local).

• serverless-localstack

  1 112 10.0 JavaScript

  Discontinued Serverless Plugin for running against Atalssian Localstack. (by temyers)

Just like SAM Local, LocalStack also has a Serverless plugin that can help us reference our local endpoints instead of the real ones in AWS. First of all install serverless-localstack using this command:

• awscli-local

  6 1,001 4.5 Python

  💲 "awslocal" - Thin wrapper around the "aws" command line interface for use with LocalStack

  

If you want to test your created resources, you can always use the official AWS-CLI. However I found a library called awscli-Local, which already knows the LocalStack endpoints and you can use just like the official one from AWS. I’m presenting a couple of useful commands that you might need:

• SaaSHub

  www.saashub.com featured

  SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

  

• terraform

  501 41,235 9.9 Go

  Terraform enables you to safely and predictably create, change, and improve infrastructure. It is a source-available tool that codifies APIs into declarative configuration files that can be shared amongst team members, treated as code, edited, reviewed, and versioned.

  

One of the biggest features of Serverless is the ability to manage the whole life cycle of your application. That includes the creation, update and eventual destruction of your infrastructure. This infrastructure managementusing a descriptive model is called Infrastructure as Code (IaC). CloudFormation, Terraform and Heat, are just some examples of this new DevOps (maybe NoOps) revolution. So in case of Serverless, let’s try to understand how it works:

• aws-cloudformation-coverage-roadmap

  143 1,094 3.0

  The AWS CloudFormation Public Coverage Roadmap

  

One of the biggest features of Serverless is the ability to manage the whole life cycle of your application. That includes the creation, update and eventual destruction of your infrastructure. This infrastructure managementusing a descriptive model is called Infrastructure as Code (IaC). CloudFormation, Terraform and Heat, are just some examples of this new DevOps (maybe NoOps) revolution. So in case of Serverless, let’s try to understand how it works:

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