func TestTribeFullStateSync(t *testing.T) {
log.SetLevel(log.WarnLevel)
tribes := []*tribe{}
numOfTribes := 5
agreement1 := "agreement1"
plugin1 := agreement.Plugin{Name_: "plugin1", Version_: 1, Type_: core.ProcessorPluginType}
task1 := agreement.Task{ID: uuid.New()}
Convey("Tribe members are started", t, func() {
conf := getTestConfig()
conf.Name = "seed"
seed, err := New(conf)
So(seed, ShouldNotBeNil)
So(err, ShouldBeNil)
taskManager := &mockTaskManager{}
seed.SetTaskManager(taskManager)
tribes = append(tribes, seed)
for i := 1; i < numOfTribes; i++ {
conf := getTestConfig()
conf.Name = fmt.Sprintf("member-%v", i)
conf.Seed = fmt.Sprintf("%v:%v", "127.0.0.1", seed.memberlist.LocalNode().Port)
tr, err := New(conf)
taskManager := &mockTaskManager{}
tr.SetTaskManager(taskManager)
So(err, ShouldBeNil)
So(tr, ShouldNotBeNil)
tribes = append(tribes, tr)
}
var wg sync.WaitGroup
for _, tr := range tribes {
timer := time.After(4 * time.Second)
wg.Add(1)
go func(tr *tribe) {
defer wg.Done()
for {
select {
case <-timer:
panic("timed out establishing membership")
default:
if len(tr.members) == len(tribes) {
return
}
logger.Debugf("%v has %v members", tr.memberlist.LocalNode().Name, len(tr.memberlist.Members()))
time.Sleep(50 * time.Millisecond)
}
}
}(tr)
}
wg.Wait()
Convey("agreements are added", func() {
t := tribes[rand.Intn(len(tribes))]
serr := t.AddAgreement(agreement1)
So(serr, ShouldBeNil)
err := t.AddPlugin(agreement1, plugin1)
So(err, ShouldBeNil)
serr = t.AddTask(agreement1, task1)
So(serr, ShouldBeNil)
So(len(t.agreements), ShouldEqual, 1)
Convey("the state is consistent across the tribe", func() {
wg = sync.WaitGroup{}
timedOut := false
for _, tr := range tribes {
timer := time.After(10 * time.Second)
wg.Add(1)
go func(tr *tribe) {
defer wg.Done()
for {
select {
case <-timer:
timedOut = true
return
default:
if a, ok := tr.agreements[agreement1]; ok {
if a.PluginAgreement != nil {
if ok, _ := a.PluginAgreement.Plugins.Contains(plugin1); ok {
return
}
}
}
logger.Debugf("%v has %v agreements", tr.memberlist.LocalNode().Name, len(tr.agreements))
time.Sleep(200 * time.Millisecond)
}
}
}(tr)
}
wg.Wait()
So(timedOut, ShouldBeFalse)
Convey("all members are added to the agreements", func() {
for _, tr := range tribes {
logger.Debugf("joining %v %v", agreement1, tr.memberlist.LocalNode().Name)
err := t.JoinAgreement(agreement1, tr.memberlist.LocalNode().Name)
So(err, ShouldBeNil)
}
})
})
})
})
}
func TestTribeMembership(t *testing.T) {
numOfTribes := 5
tribes := getTribes(numOfTribes, nil)
Convey(fmt.Sprintf("%d tribes are started", numOfTribes), t, func() {
for i := 0; i < numOfTribes; i++ {
log.Debugf("%v is reporting %v members", i, len(tribes[i].memberlist.Members()))
So(len(tribes[0].memberlist.Members()), ShouldEqual, len(tribes[i].memberlist.Members()))
}
Convey("The cluster agrees on membership", func() {
for i := 0; i < numOfTribes; i++ {
So(
len(tribes[0].memberlist.Members()),
ShouldEqual,
len(tribes[i].memberlist.Members()),
)
So(len(tribes[0].members), ShouldEqual, len(tribes[i].members))
}
Convey("Adds an agreement", func(c C) {
a := "agreement1"
t := tribes[numOfTribes-1]
t.AddAgreement("agreement1")
var wg sync.WaitGroup
for _, t := range tribes {
wg.Add(1)
go func(t *tribe) {
defer wg.Done()
for {
if t.agreements != nil {
if _, ok := t.agreements[a]; ok {
c.So(ok, ShouldEqual, true)
return
}
logger.Debugf(
"%v has %d agreements",
t.memberlist.LocalNode().Name,
len(t.agreements),
)
}
time.Sleep(50 * time.Millisecond)
}
}(t)
}
wg.Wait()
for _, t := range tribes {
So(len(t.agreements), ShouldEqual, 1)
So(t.agreements[a], ShouldNotBeNil)
}
Convey("A member", func() {
Convey("joins an agreement", func() {
err := t.JoinAgreement(a, t.memberlist.LocalNode().Name)
So(err, ShouldBeNil)
})
Convey("is added to an agreement it already belongs to", func() {
Convey("adds a plugin to agreement", func() {
err := t.AddPlugin(a, agreement.Plugin{Name_: "plugin1", Version_: 1})
So(err, ShouldBeNil)
})
err := t.JoinAgreement(a, t.memberlist.LocalNode().Name)
So(err.Error(), ShouldResemble, errAlreadyMemberOfPluginAgreement.Error())
})
Convey("leaves an agreement that doesn't exist", func() {
err := t.LeaveAgreement("whatever", t.memberlist.LocalNode().Name)
So(err.Error(), ShouldResemble, errAgreementDoesNotExist.Error())
})
Convey("handles an unknown member trying to leave an agreement", func() {
err := t.LeaveAgreement(a, "whatever")
So(err.Error(), ShouldResemble, errUnknownMember.Error())
})
Convey("handles a member leaving an agreement it isn't part of", func() {
err := t.LeaveAgreement(a, tribes[0].memberlist.LocalNode().Name)
So(err.Error(), ShouldResemble, errNotAMember.Error())
})
Convey("handles an unknown member trying to join an agreement", func() {
msg := &agreementMsg{
LTime: t.clock.Time(),
UUID: uuid.New(),
AgreementName: a,
MemberName: "whatever",
Type: joinAgreementMsgType,
}
err := t.joinAgreement(msg)
So(err, ShouldNotBeNil)
So(err.Error(), ShouldResemble, errUnknownMember.Error())
})
})
})
})
})
}