Intro
Cloud-native development demands a new approach to building, launching, and observing cloud apps. Mantil is a modern open-source framework for writing serverless apps in Go. It allows you to quickly create and deploy applications that use AWS Lambda over a command line interface.
Start exploring Mantil by creating a new project.
What you'll need
Before we can start with the new project make sure you have installed:
Start the new project
Generate a new Mantil project using mantil new my-project, it just locally creates project structure.
➜ mantil new my-project
Your project is ready in ./my-project
➜ tree my-project
my-project
├── api
│ └── ping
│ ├── ping.go
│ └── ping_test.go
├── config
│ ├── environment.yml
│ └── state.yml
├── go.mod
├── go.sum
└── test
├── init.go
└── ping_test.go
4 directories, 8 files
Create development environment
In Mantil, we passionately believe that developing for the cloud should be done in the cloud. That means we don't have support for a local environment that fakes real services. Instead, we enable you to easily and quickly create multiple stages of the same project directly in the cloud.
To get the most out of Mantil, you should organize at least two stages: development and production. The development stage is your private sandbox where you can quickly iterate and test your changes without affecting stable production.
To start developing in the cloud install the Mantil node in your AWS account and set up your development stage:
➜ mantil stage new development
Creating stage development on node demo
...
Deploy successful!
Build time: 625ms, upload: 728ms (5.4 MiB), update: 28.573s
Stage development is ready!
Endpoint: https://lh5rfrc3gf.execute-api.eu-central-1.amazonaws.com
Iterate quickly
The main complaint about working in the cloud is frustrating build experiences where you need to manually make a number of steps to check minor change. With mantil watch app is deployed automatically on every save. Moreover, it is done in seconds, so fluid development workflow is preserved.
➜ mantil watch
Watching changes in /my-project/api
Changes spotted! Starting deploy
Building..
Uploading changes..
ping
Updating infrastructure..
Deploy successful!
Build time: 6.464s, upload: 806ms (5.4 MiB), update: 2.806s
Watching changes in /my-project/api
Mantil also supports code testing via standard go tests or by invoking a specific function and getting logs instantly during function execution (not after the function is completed).
Deploy to production
Once you are ready to go live create a production stage:
mantil stage new production
Congratulation, your AWS Lambda app is live!
Check Usage and Your First Mantil Project to get into details of working with Mantil.