Files
mesh-sdk/go/buildstep/pull_integration_test.go
T

99 lines
2.8 KiB
Go

//go:build integration
package buildstep
import (
"context"
"sync"
"testing"
"time"
"github.com/nats-io/nats.go"
"github.com/nats-io/nats.go/jetstream"
"git.novox.be/novox/mesh-sdk/go/delivery"
"git.novox.be/novox/mesh-sdk/go/testbus"
)
func askBus(t *testing.T, ackWait time.Duration) jetstream.JetStream {
t.Helper()
nc, err := nats.Connect(testbus.URL(t))
if err != nil {
t.Fatal(err)
}
t.Cleanup(nc.Close)
js, err := jetstream.New(nc)
if err != nil {
t.Fatal(err)
}
if err := DeclareAskWorkers(context.Background(), js, delivery.AskGo, ackWait); err != nil {
t.Fatal(err)
}
return js
}
func publishAsk(t *testing.T, js jetstream.JetStream, a delivery.StepAsk) {
t.Helper()
raw, err := delivery.EncodeStepAsk(a)
if err != nil {
t.Fatal(err)
}
subject, _ := delivery.AskSubject(a.Language, a.Kind)
if _, err := js.Publish(context.Background(), subject, raw); err != nil {
t.Fatal(err)
}
}
// 1887/A2a, 1887/AC-order, 1887/AC-pull on the real server: a check ask published before a delivery ask runs after it;
// with capacity 2 and three asks two run, the third waits in the stream and starts when one ends.
func TestPullOrderAndCapacityOnTheBus(t *testing.T) {
js := askBus(t, 30*time.Second)
check, first, second := testAsk(delivery.AskCheck), testAsk(delivery.AskDelivery), testAsk(delivery.AskDelivery)
publishAsk(t, js, check)
publishAsk(t, js, first)
publishAsk(t, js, second)
release := make(chan struct{})
var mu sync.Mutex
var order []string
st := newSteps()
p := &Puller{Source: &JetStreamAsks{JS: js, Language: delivery.AskGo}, Language: delivery.AskGo, Node: "shanks", Put: st.put,
Capacity: func() int { return 2 }, PullWait: 200 * time.Millisecond,
Run: func(ctx context.Context, a delivery.StepAsk) (any, error) {
mu.Lock()
order = append(order, a.ID)
mu.Unlock()
<-release
return nil, nil
}}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
go p.Pull(ctx)
waitFor(t, "two in hand", func() bool { return p.InHand() == 2 })
time.Sleep(500 * time.Millisecond)
mu.Lock()
if len(order) != 2 || order[0] != first.ID || order[1] != second.ID {
t.Fatalf("ran %v, want the two delivery asks %s %s first", order, first.ID, second.ID)
}
mu.Unlock()
release <- struct{}{}
waitFor(t, "the check taken", func() bool { mu.Lock(); defer mu.Unlock(); return len(order) == 3 })
close(release)
waitFor(t, "every step ended", func() bool {
for _, a := range []delivery.StepAsk{check, first, second} {
key, _ := delivery.AskStepKey("shanks", a.ID)
if s, ok := st.get(key); !ok || s.State != delivery.StepPassed {
return false
}
}
return true
})
info, err := js.Stream(ctx, "SEAT_NODE_BUILD_GO")
if err != nil {
t.Fatal(err)
}
waitFor(t, "the stream empty (every ask acknowledged)", func() bool {
si, err := info.Info(ctx)
return err == nil && si.State.Msgs == 0
})
}