Custom Open Policy Agent with prototypical support for Authzed

This experiment adds support for querying relations from Authzed / SpiceDB via GRPC to check resource level permissions as custom builtin commands for Open Policy Agent.

Currently only one command is supported:

authzed.check_permission("SUBJECT", "PERMISSION", "RESOURCE_ID") -> bool

Build

Note this example uses Go 1.19

go get
go build

Demo

Start authzed demo environment

docker compose -f demo/docker-compose.yml up -d

Run custom Open Policy Agent with authzed plugin enabled

./custom-opa-spicedb run \
  --set plugins.authzed.endpoint=localhost:50051 \
  --set plugins.authzed.token=foobar \
  --set plugins.authzed.insecure=true

Query relations against authzed See the example RBAC schema for reference.

> authzed.check_permission("user:tom", "view", "document:firstdoc")
true
> authzed.check_permission("user:tom", "edit", "document:firstdoc")
true
> authzed.check_permission("user:fred", "edit", "document:firstdoc")
false
> exit

Stop demo environment

docker compose -f demo/docker-compose.yml down