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package spec
import (
"encoding/json"
"testing"
"time"
"github.com/johnandersen777/socialweb-computer-kcp/internal/policyengine/policytest"
"github.com/johnandersen777/socialweb-computer-kcp/internal/policyengine/runs"
)
const (
verdictTTL = 30 * time.Second
trustTTL = 10 * time.Second
)
func TestEngineVerdictCache(t *testing.T) {
t.Parallel()
for _, perspective := range []side{bidderSide, requesterSide} {
workflow := string(perspective) + "-tangled-vouch"
p := policytest.PartiesFor(string(perspective))
for _, vouched := range []bool{true, false} {
name := "deny"
if vouched {
name = "allow"
}
t.Run("cache/engine/"+workflow+"/full/hit-same-verdict-"+name, func(t *testing.T) {
t.Parallel()
h := policytest.New(t)
if vouched {
h.World.Vouch(p.Self, p.CP)
}
first := evaluate(t, h, workflow, perspective, full, p.Self, p.CP, nil)
firstRun := first.mustRun(t, workflow)
if actionRan(t, firstRun, workflow, vouched).FromCache {
t.Fatalf("the first decision was served from a cache")
}
second := evaluate(t, h, workflow, perspective, full, p.Self, p.CP, nil)
secondRun := second.mustRun(t, workflow)
if !actionRan(t, secondRun, workflow, vouched).FromCache {
t.Fatalf("the repeated decision was not served from the verdict cache")
}
if first.verdict.Allow != second.verdict.Allow {
t.Fatalf("the cached verdict allow=%t differs from the uncached allow=%t", second.verdict.Allow, first.verdict.Allow)
}
})
}
t.Run("cache/engine/"+workflow+"/full/other-counterparty-never-hits", func(t *testing.T) {
t.Parallel()
h := policytest.New(t)
h.World.Vouch(p.Self, p.CP)
evaluate(t, h, workflow, perspective, full, p.Self, p.CP, nil).mustAllow(t)
other := evaluate(t, h, workflow, perspective, full, p.Self, policytest.Stranger, nil)
if actionRan(t, other.mustRun(t, workflow), workflow, false).FromCache {
t.Fatalf("another counterparty was served the first counterparty's verdict")
}
other.mustDeny(t, "not vouched")
})
t.Run("cache/engine/"+workflow+"/full/other-rfp-never-hits", func(t *testing.T) {
t.Parallel()
h := policytest.New(t)
h.World.Vouch(p.Self, p.CP)
first := h.World.RFP(policytest.Requester, "rfp-one")
second := h.World.RFP(policytest.Requester, "rfp-two")
evaluate(t, h, workflow, perspective, full, p.Self, p.CP, &first).mustAllow(t)
again := evaluate(t, h, workflow, perspective, full, p.Self, p.CP, &second)
if actionRan(t, again.mustRun(t, workflow), workflow, true).FromCache {
t.Fatalf("a decision on another RFP was served from the first RFP's verdict")
}
})
for _, mode := range []lane{scope, full} {
t.Run("cache/engine/"+workflow+"/"+string(mode)+"/revoked-vouch-after-invalidation-never-hits", func(t *testing.T) {
t.Parallel()
h := policytest.New(t)
h.World.Vouch(p.Self, p.CP)
evaluate(t, h, workflow, perspective, mode, p.Self, p.CP, nil).mustAllow(t)
h.World.Unvouch(p.Self, p.CP)
h.ForgetTrust()
again := evaluate(t, h, workflow, perspective, mode, p.Self, p.CP, nil)
again.mustRun(t, workflow)
again.mustDeny(t, "")
})
t.Run("cache/engine/"+workflow+"/"+string(mode)+"/deny-stays-deny", func(t *testing.T) {
t.Parallel()
h := policytest.New(t)
evaluate(t, h, workflow, perspective, mode, p.Self, p.CP, nil).mustDeny(t, "")
again := evaluate(t, h, workflow, perspective, mode, p.Self, p.CP, nil)
again.mustRun(t, workflow)
again.mustDeny(t, "")
})
}
t.Run("cache/engine/"+workflow+"/full/verdict-ttl-expires", func(t *testing.T) {
t.Parallel()
h := policytest.New(t)
h.World.Vouch(p.Self, p.CP)
evaluate(t, h, workflow, perspective, full, p.Self, p.CP, nil).mustAllow(t)
time.Sleep(verdictTTL + time.Second)
again := evaluate(t, h, workflow, perspective, full, p.Self, p.CP, nil)
if actionRan(t, again.mustRun(t, workflow), workflow, true).FromCache {
t.Fatalf("a verdict older than %s was served from the cache", verdictTTL)
}
})
t.Run("cache/engine/"+workflow+"/scope/trust-ttl-expires", func(t *testing.T) {
t.Parallel()
h := policytest.NewWith(t, policytest.Options{TrustTTL: trustTTL})
h.World.Vouch(p.Self, p.CP)
evaluate(t, h, workflow, perspective, scope, p.Self, p.CP, nil).mustAllow(t)
h.World.Unvouch(p.Self, p.CP)
cached := evaluate(t, h, workflow, perspective, scope, p.Self, p.CP, nil)
cached.mustRun(t, workflow)
cached.mustAllow(t)
time.Sleep(trustTTL + time.Second)
expired := evaluate(t, h, workflow, perspective, scope, p.Self, p.CP, nil)
expired.mustRun(t, workflow)
expired.mustDeny(t, "")
})
}
t.Run("cache/engine/attached/full/other-record-body-other-key", func(t *testing.T) {
t.Parallel()
h := policytest.New(t)
source := policytest.URI(policytest.Requester, policytest.PolicyGhaLiteNSID, "attached")
keyOf := func(text string) string {
body, _ := json.Marshal(text)
got := run(t, h, "bidder", runs.Request{Workflow: body, Source: source, Input: runs.Input{Perspective: "bidder", Mode: runs.ModeFull,
SelfDid: policytest.Bidder, SubjectDid: policytest.Requester, CounterpartyDid: policytest.Requester}})
got.mustAllow(t)
key, _ := got.mustRun(t, source).Output("evaluate", "cache-key")
return key
}
original := policytest.WorkflowFixture("cache-key-declared")
if keyOf(original) == keyOf(original+"\n# changed body\n") {
t.Fatalf("two policy bodies under one record uri share a cache-key")
}
})
}
