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title Envoy External Authorization
keywords
envoy
external authorization
keyauth
description External authorization with Envoy.

Fiber as an Envoy External Authorization HTTP Service

Github StackBlitz

One way of extending the popular Envoy proxy is by developing an external authorization service.

This example illustrates using fiber and the keyauth middleware as an authorization service for a front proxy (the configuration could also be used for an L2 / Sidecar proxy). See authz.

It also uses fiber as a sample upstream service, with the following endpoints. See app.

Endpoints

Name Rute Protected Method
Health /health No GET
Resource /api/resource Yes GET

Run

docker-compose up --build -d

Test

Name Command Status
Not protected curl localhost:8000/health -i 200
Missing API key curl localhost:8000/api/resource -i 403
Invalid API key curl localhost:8000/api/resource -i -H "x-api-key: invalid-key" 403
Valid API key curl localhost:8000/api/resource -i -H "x-api-key: valid-key" 200

Stop

docker-compose down