Cannot create custom-plugin on Docker container

[francisco-andrade]

Hi there,

I'm looking around on how to create custom-plugin, but as far as I understood, I'll have to build the kong source to include my custom plugin.
Since this container always download the rpm file, I cannot compile my plugin's source.

I'm following the steps on this tutorial: http://streamdata.io/blog/developing-an-helloworld-kong-plugin/

If I misunderstood something, please help me.

Thanks!
Francisco Andrade

[Tieske]

Plugins are just Lua code files (source code). You just need to place them in your Lua path such that Kong can find them.

When developing your plugin on the other hand, you probably do want to setup the kong dev environment to be able to quicker iterate over changes and bug fixes you make.

[Tieske]

just noticed this is Docker related, which probably means that before starting a container you need to copy the files in, and modify the configuration to include your custom plugin. Dunno how one would do that with Docker.

[francisco-andrade]

Thanks for the help Tieske :)

I was able to create custom-plugins changing somethings at the repository before building the image.

I copied the kong-${KONG_VERSION}-0.rockspec file from /usr/local/lib/luarocks/rocks/kong/${KONG_VERSION}-0/kong-${KONG_VERSION}-0.rockspec and added these lines inside the modules param:

["kong.plugins.my-plugin.handler"] = "kong/plugins/my-plugin/handler.lua",
["kong.plugins.my-plugin.access"] = "kong/plugins/my-plugin/access.lua",
["kong.plugins.my-plugin.schema"] = "kong/plugins/my-plugin/schema.lua",

At kong.yml I added the lines:

custom_plugins:

• my-plugin

I created the directory custom-plugins with the plugin access.lua, handler.lua and schema.lua files. And added these two lines into the Dockerfile:

COPY custom-plugins/my-plugin/* /usr/local/share/lua/5.1/kong/plugins/my-plugin/
COPY kong-${KONG_VERSION}-0.rockspec /usr/local/lib/luarocks/rocks/kong/${KONG_VERSION}-0/kong-${KONG_VERSION}-0.rockspec