heroku-openresty-buildpack

Introduction

This is customized version of geoffleyland/heroku-buildpack-openresty buildpack, that gives ability to use OpenResty as proxy in front of deployed application.

OpenResty comes with builtin lua support.

Installation & usage

Add this buildpack to your heroku application, with:

$ heroku buildpack:set https://github.com/flyerbee-com/heroku-buildpack-openresty

Then, copy provided nginx.conf.template to root of your application source code and rename it to nginx.conf; adjust it to suit your needs.

By default, OpenResty expects your application to listen on port 8080. In case you have other port in mind, update nginx.conf proxy_pass variable.

Updating Procfile

Make sure to update your Procfile. In general, the content should be:

web: openresty.sh <command-to-start-your-application>

For example, to start custom Java application, Procfile will look like:

web: openresty.sh java $JVM_OPTS -jar app.jar

Updating your application

When your application is ready to serve requests sent by OpenResty, make sure to create empty /tmp/app-initialized file. This is a checkpoint for heroku-buildpack-openresty startup scripts, after which OpenResty will be started.

In case your application doesn't create this file, it will be assumed it wasn't initialzed properly and OpenResty startup will fail.

Using custom lua packages

In case you'd like to have installed custom lua libraries (or lua rocks), add rockspec file to your project on the same location where your put nginx.conf.

Here is example how to install lua-resty-http library:

package = "PROJECT_NAME"
version = "1-1"

source = {
  url = "",
}

build = {
  type = "builtin",
  modules = {},
}

-- actual dependencies used by openresty
dependencies = {
  "lua-resty-http"
}

Update PROJECT_NAME to actual name of your project and save file as: PROJECT_NAME-1-1.rockspec.

License

Most of the work has been done by https://github.com/geoffleyland. Further customizations by Sanel Zukan for FLYERBEE AG.