Ω(err).ShouldNot(HaveOccurred())
Ω(startMessages()).Should(BeEmpty())
Ω(stopMessages()).Should(HaveLen(2))
expectedMessage := models.NewPendingStopMessage(clock.Now(), 0, conf.GracePeriod(), app.AppGuid, app.AppVersion, app.InstanceAtIndex(1).InstanceGuid, models.PendingStopMessageReasonExtra)
Ω(stopMessages()).Should(ContainElement(EqualPendingStopMessage(expectedMessage)))
expectedMessage = models.NewPendingStopMessage(clock.Now(), 0, conf.GracePeriod(), app.AppGuid, app.AppVersion, app.InstanceAtIndex(2).InstanceGuid, models.PendingStopMessageReasonExtra)
Ω(stopMessages()).Should(ContainElement(EqualPendingStopMessage(expectedMessage)))
})
})
Context("and desired instances are missing", func() {
BeforeEach(func() {
storeAdapter.Delete("/hm/v1/apps/actual/" + app.AppGuid + "," + app.AppVersion + "/" + app.InstanceAtIndex(0).InstanceGuid)
})
It("should return a start message containing the missing indices and no stop messages", func() {
err := analyzer.Analyze()
Ω(err).ShouldNot(HaveOccurred())
Ω(startMessages()).Should(HaveLen(1))
expectedMessage := models.NewPendingStartMessage(clock.Now(), conf.GracePeriod(), 0, app.AppGuid, app.AppVersion, 0, 1.0, models.PendingStartMessageReasonMissing)
Ω(startMessages()).Should(ContainElement(EqualPendingStartMessage(expectedMessage)))
Ω(stopMessages()).Should(BeEmpty())
})
})
})
It("returns nil when it eventually wins", func() {
preExistingNode := storeadapter.StoreNode{
Key: "syslog_drain_binder/leader",
Value: []byte("some-other-instance"),
}
err := fakeStore.Create(preExistingNode)
Expect(err).NotTo(HaveOccurred())
errChan := make(chan error)
go func() {
errChan <- candidate.RunForElection()
}()
time.Sleep(1 * time.Second)
fakeStore.Delete(preExistingNode.Key)
Eventually(errChan, 2).Should(Receive(BeNil()))
})
})
Describe("StayAsLeader", func() {
var candidate *elector.Elector
BeforeEach(func() {
fakeStore.Create(storeadapter.StoreNode{
Key: "syslog_drain_binder/leader",
Value: []byte("candidate1"),
})
})
Context("when already leader", func() {
conf, _ := config.DefaultConfig()
conf.StoreSchemaVersion = 2
store := storepackage.NewStore(conf, storeAdapter, fakelogger.NewFakeLogger())
shredder = New(store)
storeAdapter.SetMulti([]storeadapter.StoreNode{
{Key: "/hm/v2/pokemon/geodude", Value: []byte{}},
{Key: "/hm/v2/deep-pokemon/abra/kadabra/alakazam", Value: []byte{}},
{Key: "/hm/v2/pokemonCount", Value: []byte("151")},
{Key: "/hm/v1/nuke/me/cause/im/an/old/version", Value: []byte("abc")},
{Key: "/hm/v3/leave/me/alone/since/im/a/new/version", Value: []byte("abc")},
{Key: "/hm/nuke/me/cause/im/not/versioned", Value: []byte("abc")},
{Key: "/let/me/be", Value: []byte("abc")},
})
storeAdapter.Delete("/hm/v2/pokemon/geodude", "/hm/v2/deep-pokemon/abra/kadabra/alakazam")
err := shredder.Shred()
Ω(err).ShouldNot(HaveOccurred())
})
It("should delete empty directories", func() {
_, err := storeAdapter.Get("/hm/v2/pokemon")
Ω(err).Should(Equal(storeadapter.ErrorKeyNotFound))
_, err = storeAdapter.Get("/hm/v2/deep-pokemon")
Ω(err).Should(Equal(storeadapter.ErrorKeyNotFound))
_, err = storeAdapter.Get("/hm/v2/pokemonCount")
Ω(err).ShouldNot(HaveOccurred())
})