How to define a an lua module on lua Envoy Filter

#1

I want to make a redis call inside the lua script in the Envoy Filter by using a lua redis client (https://github.com/noma4i/lua-api-client) to translate a custom token to JWT token.

Since the code of Envoy Filter have to be inlined into the configuration how can I load a external lua module?

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#2

It’s the standard Envoy Lua filter that is invoked.

https://www.envoyproxy.io/docs/envoy/latest/configuration/http_filters/lua_filter

If you’re having difficulty using it, the Envoy community might be more helpful than us.

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#3

As far as I can tell (I haven’t done this), you’ll need to compile a custom version of envoy. See the note on lua rocks here:

Then, you’ll need to get Istio to use your version of envoy.

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