Air

☁️ Live reload for Go apps

Motivation

When I get started with developing websites in Go and gin framework, it's a pity that gin lacks live-reloading function. In fact, I tried fresh and it seems not much flexible, so I intended to rewrite it in a better way. Finally, Air's born. In addition, great thanks to pilu, no fresh, no air :)

Air is yet another live-reloading command line utility for Go applications in development. Just air in your project root directory, leave it alone, and focus on your code.

NOTE: This tool has nothing to do with hot-deploy for production.

Features

• colorful log output
• customize go build command
• customize binary execution command
• support excluding subdirectories
• allow watching new directories after Air started
• better building process

Installation

on macOS

curl -fLo ~/.air \
    https://raw.githubusercontent.com/cosmtrek/air/master/bin/darwin/air
chmod +x ~/.air

on Linux

curl -fLo ~/.air \
    https://raw.githubusercontent.com/cosmtrek/air/master/bin/linux/air
chmod +x ~/.air

on Windows

curl -fLo ~/.air.exe \
    https://raw.githubusercontent.com/cosmtrek/air/master/bin/windows/air.exe

P.S. Great thanks mattn's PR for supporting Windows platform.

Docker way

Please pull this docker image cosmtrek/air.

docker run -it --rm \
    -e "air_wd=<YOUR PROJECT DIR>" \
    -v $(pwd):<YOUR PROJECT DIR> \
    -p <PORT>:<YOUR APP SERVER PORT> \
    cosmtrek/air

For example, one of my project runs in docker:

docker run -it --rm \
    -e "air_wd=/go/src/github.com/cosmtrek/hub" \
    -v $(pwd):/go/src/github.com/cosmtrek/hub \
    -p 9090:9090 \
    cosmtrek/air

Usage

For less typing, you could add alias air='~/.air' to your .bashrc or .zshrc.

First enter into your project

cd /path/to/your_project

The simplest usage is run

# firstly find `.air.conf` in current directory, if not found, use defaults
air

While I prefer the second way

# 1. create a new file
touch .air.conf

# 2. paste `air.conf.example` into this file, and modify it to satisfy your needs

# 3. run air with your configs. If file name is `.air.conf`, just run `air`
air -c .air.conf

See the complete air.conf.example

Debug

air -d prints all logs.

Development

# 1. fork this project

# 2. clone it
mkdir -p $GOPATH/src/github.com/cosmtrek
cd $GOPATH/src/github.com/cosmtrek
git clone git@github.com:<YOUR USERNAME>/air.git

# 3. install dependencies
cd air
make ci

# 4. explore it and happy hacking!
make install

Contributing

PRs are welcome~

License

GNU General Public License v3.0