Go

Go applications (golang) are supported through a BuildPack framework, and can be pushed to Stackato with a basic setup.

Local Install

To build Go code, install it locally using one of the Go packages.

Deployment

Here is a basic deployment setup based on the "Hello World" Go sample application.

Files

You will need the following files to deploy a Go app on Stackato:

app.go
Procfile
.godir
stackato.yml

app.go

The Go buildpack recognizes Go apps by the existence of a .go source file anywhere in the repository:

package main

import (
        "fmt"
        "log"
        "net/http"
        "os"
)

func main() {
        http.HandleFunc("/", hello)
        err := http.ListenAndServe(":"+os.Getenv("PORT"), nil)
        if err != nil {
                log.Fatal("ListenAndServe:", err)
        }
}

func hello(w http.ResponseWriter, req *http.Request) {
        fmt.Fprintln(w, "hello, world!")
}

Procfile

To run your web process, you need to declare what command to use. In this case, we simply need to execute our Go program. Use Procfile to declare how your web process type is run:

web: server

.godir

The go tool uses the directory name of your project to name executables and determine package import paths. Cretate a file called .godir, in your project root, containing the path from $GOPATH/src to your project root:

example.com/hello

stackato.yml

This file is optional, as the framework will automatically be detected by Stackato. However, it can still be used to set the app name, configure settings, create services, etc. See the stackato.yml docs.

name:

hello-go

Examples

• "Hello World" Go sample application.
• Getting Started with Go on Heroku.