Opa with external data

[michaelprujan]

OPA policy is unchangeable and using external data which changes every minute.
For external data i use store on stage of rego creation.The compiled rego saved in cache.

opts := []func(*rego.Rego){
		rego.Compiler(compiler),
		rego.Query(query),
		rego.StrictBuiltinErrors(true),
		rego.Strict(true),
		rego.PrintHook(&printHook{logger: log}),
	}
	if store != nil {
		opts = append(opts, rego.Store(inmem.NewFromObject(store)))
	}
	return rego.New(opts...)

the eval:
p.pq.Eval(ctx, append([]rego.EvalOption{rego.EvalParsedInput(process))
I want to update rego with new storage every minute . I do't want to recompile each time, just update the storage . Is it possible ?
Thanks.

[anderseknert]

Hi there! I believe the compiler currently is invoked on even when only data changes, as some checks (like conflicting paths) rely on both data and policy.. but could be there are some exceptions to that. @srenatus would you happen to know?

Relevant open-policy-agent/opa#2282

[srenatus]

The store as passed to rego.New() doesn't have to be thought of as static -- it's not static for the server handlers either. I think you should be able to update the store after having built your p.pq, via the store's Write method, as long as you pass a fresh transaction to every p.pq.Eval(...) via rego.EvalTransaction... But it's possible that I've misunderstood your problem!