func TestDynamicClientOnOff(t *testing.T) {
var (
serv = &testutil.Server{}
builder = testutil.NewBuilder(nil)
)
dc, err := client.NewDynamic(testutil.DynamicOpts(serv, builder))
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer dc.Close()
// Server is in unknown state.
if status := dc.Status(); status.State != machine.StateUnknown {
t.Fatalf("want state = %s; got %s", machine.StateUnknown, status.State)
}
// Server starts responding.
ctx := dc.Client().Context()
serv.TurnOn()
if err := builder.WaitForBuild(time.Second); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if n := builder.BuildsCount(); n != 1 {
t.Fatalf("want builds count = 1; got %d", n)
}
if err := testutil.WaitForContextClose(ctx, time.Second); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if status := dc.Status(); status.State != machine.StateOnline {
t.Fatalf("want state = %s; got %s", machine.StateOnline, status.State)
}
// Stop server.
ctx = dc.Client().Context()
serv.TurnOff()
if err := builder.WaitForBuild(time.Second); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if n := builder.BuildsCount(); n != 2 {
t.Fatalf("want builds count = 2; got %d", n)
}
if err := testutil.WaitForContextClose(ctx, time.Second); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if status := dc.Status(); status.State != machine.StateOffline {
t.Fatalf("want state = %s; got %s", machine.StateOffline, status.State)
}
}
func TestDynamicClientContext(t *testing.T) {
var (
serv = &testutil.Server{}
builder = testutil.NewBuilder(nil)
)
dc, err := client.NewDynamic(testutil.DynamicOpts(serv, builder))
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer dc.Close()
ctx := dc.Client().Context()
serv.TurnOn()
if err := testutil.WaitForContextClose(ctx, time.Second); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
const ContextWorkers = 10
var g errgroup.Group
for i := 0; i < ContextWorkers; i++ {
g.Go(func() error {
select {
case <-dc.Client().Context().Done():
return errors.New("context closed unexpectedly")
case <-time.After(50 * time.Millisecond):
return nil
}
})
}
// Machine is on so dynamic client should not close its context.
if err := g.Wait(); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
ctx = dc.Client().Context()
serv.TurnOff()
for i := 0; i < ContextWorkers; i++ {
g.Go(func() error {
select {
case <-ctx.Done():
return nil
case <-time.After(time.Second):
return errors.New("timed out")
}
})
}
// Machine is off so its context channel should be closed by dynamic client.
if err := g.Wait(); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
}
func TestCreateBalance(t *testing.T) {
var (
client = testutil.NewClient()
builder = testutil.NewBuilder(client)
id = machine.ID("serv")
)
g, err := New(testOptions(builder))
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer g.Close()
req := &CreateRequest{
Addresses: map[machine.ID][]machine.Addr{
id: {testutil.TurnOffAddr()},
},
}
if _, err := g.Create(req); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if err := builder.WaitForBuild(time.Second); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
// Create with empty addresses should remove previously added machine.
if _, err := g.Create(&CreateRequest{}); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
// Client context should be closed.
if err := testutil.WaitForContextClose(client.Context(), time.Second); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
}