Files
mesh-controller/internal/broker/callers_live_test.go
T

103 lines
3.2 KiB
Go

//go:build integration
package broker
import (
"errors"
"os"
"path/filepath"
"testing"
"time"
"github.com/nats-io/nats-server/v2/server"
"github.com/nats-io/nats.go"
"golang.org/x/crypto/bcrypt"
)
// **On a real server, as composed** (novox/hq issue 365): a machine's runtime calls in its own name, and the
// server refuses it a call naming another — the grant, not the runtime, is what makes the caller a fact.
func TestAServerComposedFromTheGrantsRefusesACallNamingAnother(t *testing.T) {
hash, err := bcrypt.GenerateFromPassword([]byte("pw"), bcrypt.MinCost)
if err != nil {
t.Fatal(err)
}
ledger := Seat{Name: "issue-tracker", Scope: "mesh", Serves: []string{"open"}}
accounts, err := ComposeAccounts([]Principal{
{Kind: KindNodeTools, Node: "novox", Module: RuntimeModule, PasswordHash: string(hash),
Carries: []Declared{{Module: "mesh-issues", Holds: []Seat{ledger}}}},
{Kind: KindNodeTools, Node: "shanks", Module: RuntimeModule, PasswordHash: string(hash)},
})
if err != nil {
t.Fatal(err)
}
conf := filepath.Join(t.TempDir(), "bus.conf")
if err := os.WriteFile(conf, []byte("listen: 127.0.0.1:-1\njetstream { store_dir: "+
`"`+t.TempDir()+`"`+" }\n"+accounts), 0o600); err != nil {
t.Fatal(err)
}
opts, err := server.ProcessConfigFile(conf)
if err != nil {
t.Fatalf("the composed accounts do not parse: %v", err)
}
opts.NoLog, opts.NoSigs = true, true
s, err := server.NewServer(opts)
if err != nil {
t.Fatal(err)
}
go s.Start()
if !s.ReadyForConnections(10 * time.Second) {
t.Fatal("the bus did not come up")
}
defer s.Shutdown()
holder, err := nats.Connect(s.ClientURL(), nats.UserInfo("novox.node-tools", "pw"))
if err != nil {
t.Fatal(err)
}
defer holder.Close()
heard := make(chan string, 4)
sub, err := holder.Subscribe("mesh.seat.issue-tracker.call.open.*", func(m *nats.Msg) {
heard <- m.Subject
_ = m.Respond([]byte(`{"result":{}}`))
})
if err != nil {
t.Fatal(err)
}
_ = holder.Flush()
if !sub.IsValid() {
t.Fatal("the holder may not hear the caller-named calls to its seat")
}
refusals := make(chan error, 4)
caller, err := nats.Connect(s.ClientURL(), nats.UserInfo("shanks.node-tools", "pw"),
nats.CustomInboxPrefix("_INBOX.shanks.node-tools"),
nats.ErrorHandler(func(_ *nats.Conn, _ *nats.Subscription, err error) { refusals <- err }))
if err != nil {
t.Fatal(err)
}
defer caller.Close()
if _, err := caller.Request("mesh.seat.issue-tracker.call.open.shanks~node-tools", []byte(`{}`), 3*time.Second); err != nil {
t.Fatalf("a call in the caller's own name was not answered: %v", err)
}
if got := <-heard; got != "mesh.seat.issue-tracker.call.open.shanks~node-tools" {
t.Fatalf("heard %s", got)
}
if err := caller.Publish("mesh.seat.issue-tracker.call.open.novox~node-tools", []byte(`{}`)); err != nil {
t.Fatal(err)
}
_ = caller.Flush()
select {
case err := <-refusals:
if !errors.Is(err, nats.ErrPermissionViolation) {
t.Errorf("the server said %v, want a permissions violation", err)
}
case <-time.After(3 * time.Second):
t.Error("the server did not refuse a call naming another caller")
}
select {
case got := <-heard:
t.Errorf("a call naming another reached the holder: %s", got)
case <-time.After(200 * time.Millisecond):
}
}