func TestMachineGroupFreshStart(t *testing.T) {
st, stop, err := testBoltStorage()
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer stop()
builder := testutil.NewBuilder(nil)
g, err := New(testOptionsStorage(builder, st))
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer g.Close()
// Nothing should be added to addresses storage.
address, err := addresses.NewCached(st)
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if len(address.Registered()) != 0 {
t.Errorf("want no registered machines; got %v", address.Registered())
}
// Nothing should be added to aliases storage.
alias, err := aliases.NewCached(st)
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if len(alias.Registered()) != 0 {
t.Errorf("want no registered machines; got %v", alias.Registered())
}
}
func TestSupervisedWait(t *testing.T) {
serv := &testutil.Server{}
dc, err := client.NewDynamic(testutil.DynamicOpts(serv, testutil.NewBuilder(nil)))
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer dc.Close()
dcf := func() (client.Client, error) { return dc.Client(), nil }
// Server is off, so the timeout should be reached.
const timeout = 50 * time.Millisecond
spv := client.NewSupervised(dcf, timeout)
startC, hitC := make(chan struct{}), make(chan time.Time)
go func() {
<-startC
_, err = spv.CurrentUser()
hitC <- time.Now()
}()
now := time.Now()
close(startC)
select {
case called := <-hitC:
if tret := called.Sub(now); tret < timeout {
t.Fatalf("want return at least after %v; got %v", timeout, tret)
}
if err != client.ErrDisconnected {
t.Fatalf("want err = %v; got %v", client.ErrDisconnected, err)
}
case <-time.After(time.Second):
t.Fatalf("test timed out after 1s")
}
// Server starts to be responsive while Supervisor waits for it.
spv = client.NewSupervised(dcf, 2*time.Second)
startC, hitC = make(chan struct{}), make(chan time.Time)
go func() {
<-startC
_, err = spv.CurrentUser()
hitC <- time.Now()
}()
close(startC)
serv.TurnOn()
select {
case <-hitC:
if err == client.ErrDisconnected {
t.Fatal("want err != client.ErrDisconnected")
}
case <-time.After(time.Second):
t.Fatalf("test timed out after 1s")
}
}
func TestClients(t *testing.T) {
var (
builder = testutil.NewBuilder(nil)
idA = machine.ID("servA")
idB = machine.ID("servB")
servA = &testutil.Server{}
servB = &testutil.Server{}
)
cs, err := clients.New(testOptions(builder))
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer cs.Close()
var g errgroup.Group
create := map[machine.ID]client.DynamicAddrFunc{
idA: servA.AddrFunc(),
idB: servB.AddrFunc(),
idA: servA.AddrFunc(), // duplicate.
idA: servA.AddrFunc(), // duplicate.
}
for id, dynAddr := range create {
id, dynAddr := id, dynAddr // Local copy for concurrency.
g.Go(func() error {
return cs.Create(id, dynAddr)
})
}
if err := g.Wait(); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if regs := cs.Registered(); len(regs) != 2 {
t.Fatalf("want clients count = 2; got %d", len(regs))
}
if _, err := cs.Client(idA); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if err := cs.Drop(idA); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if _, err := cs.Client(idA); err != machine.ErrMachineNotFound {
t.Fatalf("want machine not found; got %v", err)
}
if regs := cs.Registered(); len(regs) != 1 {
t.Fatalf("want clients count = 1; got %d", len(regs))
}
}
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 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 TestMachineGroupNoAliases(t *testing.T) {
st, stop, err := testBoltStorage()
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer stop()
// Add initial address.
id := machine.ID("servA")
address, err := addresses.NewCached(st)
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if err := address.Add(id, testutil.TurnOnAddr()); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if len(address.Registered()) != 1 {
t.Errorf("want one registered machine; got %v", address.Registered())
}
builder := testutil.NewBuilder(nil)
g, err := New(testOptionsStorage(builder, st))
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer g.Close()
// Machine group should add alias for missing ID.
alias, err := aliases.NewCached(st)
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if len(alias.Registered()) != 1 {
t.Errorf("want one registered machine; got %v", address.Registered())
}
// Dynamic client should be started.
if err := builder.WaitForBuild(time.Second); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if builder.BuildsCount() != 1 {
t.Errorf("want dynamic builds number = 1; got %d", builder.BuildsCount())
}
}
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)
}
}
func TestCreate(t *testing.T) {
var (
builder = testutil.NewBuilder(nil)
idA = machine.ID("servA")
idB = machine.ID("servB")
)
g, err := New(testOptions(builder))
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer g.Close()
const AddedServersCount = 2
req := &CreateRequest{
Addresses: map[machine.ID][]machine.Addr{
idA: {testutil.TurnOffAddr()},
idB: {testutil.TurnOnAddr()},
},
}
res, err := g.Create(req)
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if la := len(res.Aliases); la != AddedServersCount {
t.Fatalf("want aliases count = %d; got: %d", AddedServersCount, la)
}
// Check generated aliases which must be unique and not empty.
aliasA := res.Aliases[idA]
if aliasA == "" {
t.Errorf("want aliasA != ``; got ``")
}
aliasB := res.Aliases[idB]
if aliasB == "" {
t.Errorf("want aliasB != ``; got ``")
}
if aliasA == aliasB {
t.Errorf("want aliasA != aliasB; got %s == %s", aliasA, aliasB)
}
for i := 0; i < AddedServersCount; i++ {
if err := builder.WaitForBuild(time.Second); err != nil {
t.Fatalf("want err = nil; got %v", err)
}
}
// Already added, update statuses; don't change aliases.
res, err = g.Create(req)
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
if aliasA != res.Aliases[idA] {
t.Errorf("want aliasA = %s; got %s", aliasA, res.Aliases[idA])
}
if aliasB != res.Aliases[idB] {
t.Errorf("want aliasB = %s; got %s", aliasB, res.Aliases[idB])
}
// Machines were pinged and they clients were build.
statuses := map[machine.ID]machine.Status{
idA: machine.Status{State: machine.StateOffline},
idB: machine.Status{State: machine.StateOnline},
}
if !reflect.DeepEqual(statuses, res.Statuses) {
t.Fatalf("want statuses = %#v; got %#v", statuses, res.Statuses)
}
}
func TestID(t *testing.T) {
var (
idA = machine.ID("servA")
idB = machine.ID("servB")
ipA = machine.Addr{Network: "ip", Value: "52.24.123.32", UpdatedAt: time.Now()}
ipB = machine.Addr{Network: "ip", Value: "10.0.1.16", UpdatedAt: time.Now()}
)
g, err := New(testOptions(testutil.NewBuilder(nil)))
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
defer g.Close()
req := &CreateRequest{
Addresses: map[machine.ID][]machine.Addr{
idA: {ipA},
idB: {ipB},
},
}
res, err := g.Create(req)
if err != nil {
t.Fatalf("want err = nil; got %v", err)
}
tests := map[string]struct {
Identifier string
ID machine.ID
Found bool
}{
"by ID": {
Identifier: string(idA),
ID: idA,
Found: true,
},
"by alias": {
Identifier: res.Aliases[idB],
ID: idB,
Found: true,
},
"by IP": {
Identifier: ipA.Value,
ID: idA,
Found: true,
},
"not found alias": {
Identifier: "unknown_alias",
ID: "",
Found: false,
},
"not found IP": {
Identifier: "127.0.0.12",
ID: "",
Found: false,
},
"not found TCP": {
Identifier: ipB.Value + ":8080",
ID: "",
Found: false,
},
}
for name, test := range tests {
test := test // capture range variable.
t.Run(name, func(t *testing.T) {
t.Parallel()
req := &IDRequest{
Identifier: test.Identifier,
}
res, err := g.ID(req)
if (err == nil) != test.Found {
t.Fatalf("want (err == nil) = %t; got err: %v", test.Found, err)
}
if !test.Found {
return
}
if res.ID != test.ID {
t.Fatalf("want ID = %v; got %v", test.ID, res.ID)
}
})
}
}