OpenFaaS Templates

golang-middleware-busybox

This template is mostly the same as golang-middleware with the following differences:

1. The final image is busybox:1.3.2-glibc instead of alpine
2. Any binaries in the bin directory relative to the function will be added to the bin directory inside the working directory of the function, relative to bin and be given executable permissions: chmod +x.

Overview

The purpose of using busybox:glibc as the base image is to account for some of the deficiencies in alpine when it comes to DNS resolution.

The copied in binaries from the bin directory allow users to use golang exec to call the executables from the function handler.

Example

Please see the basic example below for how to structure your function within the repository.

Repository Structure

example
├── bin
│   └── ex-bin
└── handler.go
stack.yml

Golang Handler Snippet

example/handler.go

command := exec.Command("./bin/ex-bin")

Stack Configuration

stack.yml

version: 1.0

provider:
  name: openfaas
  gateway: http://127.0.0.1:8080

functions:
  example:
    lang: golang-middleware-busybox
    handler: ./example
    image: example:latest