func init() {
Describe("prepareNetworkChange", func() {
var (
action PrepareNetworkChangeAction
fs *fakesys.FakeFileSystem
settingsService *fakesettings.FakeSettingsService
)
BeforeEach(func() {
fs = fakesys.NewFakeFileSystem()
settingsService = &fakesettings.FakeSettingsService{}
action = NewPrepareNetworkChange(fs, settingsService)
})
It("is synchronous", func() {
Expect(action.IsAsynchronous()).To(BeFalse())
})
It("is not persistent", func() {
Expect(action.IsPersistent()).To(BeFalse())
})
It("invalidates settings so that load settings cannot fall back on old settings", func() {
resp, err := action.Run()
Expect(err).NotTo(HaveOccurred())
Expect(resp).To(Equal("ok"))
Expect(settingsService.SettingsWereInvalidated).To(BeTrue())
})
Context("when settings invalidation succeeds", func() {
Context("when the network rules file can be removed", func() {
It("removes the network rules file", func() {
fs.WriteFile("/etc/udev/rules.d/70-persistent-net.rules", []byte{})
resp, err := action.Run()
Expect(err).NotTo(HaveOccurred())
Expect(resp).To(Equal("ok"))
Expect(fs.FileExists("/etc/udev/rules.d/70-persistent-net.rules")).To(BeFalse())
})
})
Context("when the network rules file cannot be removed", func() {
BeforeEach(func() {
fs.RemoveAllError = errors.New("fake-remove-all-error")
})
It("returns error from removing the network rules file", func() {
resp, err := action.Run()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-remove-all-error"))
Expect(resp).To(BeNil())
})
})
})
Context("when settings invalidation fails", func() {
BeforeEach(func() {
settingsService.InvalidateSettingsError = errors.New("fake-invalidate-error")
})
It("returns error early if settings err invalidating", func() {
resp, err := action.Run()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-invalidate-error"))
Expect(resp).To(BeNil())
})
It("does not remove the network rules file", func() {
fs.WriteFile("/etc/udev/rules.d/70-persistent-net.rules", []byte{})
action.Run()
Expect(fs.FileExists("/etc/udev/rules.d/70-persistent-net.rules")).To(BeTrue())
})
})
})
}
func init() {
Describe("concreteServiceProvider", func() {
var (
platform *fakeplatform.FakePlatform
)
Describe("NewService", func() {
It("returns service with settings.json as its settings path", func() {
// Cannot compare fetcher functions since function comparison is problematic
fs := fakesys.NewFakeFileSystem()
logger := boshlog.NewLogger(boshlog.LevelNone)
service := NewServiceProvider().NewService(fs, "/setting/path", nil, platform, logger)
Expect(service).To(Equal(NewService(fs, "/setting/path/settings.json", nil, platform, logger)))
})
})
})
Describe("concreteService", func() {
var (
fs *fakesys.FakeFileSystem
platform *fakeplatform.FakePlatform
)
BeforeEach(func() {
fs = fakesys.NewFakeFileSystem()
platform = fakeplatform.NewFakePlatform()
})
buildService := func(fetcher SettingsFetcher) (Service, *fakesys.FakeFileSystem) {
logger := boshlog.NewLogger(boshlog.LevelNone)
service := NewService(fs, "/setting/path", fetcher, platform, logger)
return service, fs
}
Describe("LoadSettings", func() {
var (
fetchedSettings Settings
fetcherFuncErr error
service Service
)
BeforeEach(func() {
fetchedSettings = Settings{}
fetcherFuncErr = nil
})
JustBeforeEach(func() {
fetcherFunc := func() (Settings, error) { return fetchedSettings, fetcherFuncErr }
service, fs = buildService(fetcherFunc)
})
Context("when settings fetcher succeeds fetching settings", func() {
BeforeEach(func() {
fetchedSettings = Settings{AgentID: "some-new-agent-id"}
})
Context("when settings contain at most one dynamic network", func() {
BeforeEach(func() {
fetchedSettings.Networks = Networks{
"fake-net-1": Network{Type: NetworkTypeDynamic},
}
})
It("updates the service with settings from the fetcher", func() {
err := service.LoadSettings()
Expect(err).NotTo(HaveOccurred())
Expect(service.GetSettings().AgentID).To(Equal("some-new-agent-id"))
})
It("persists settings to the settings file", func() {
err := service.LoadSettings()
Expect(err).NotTo(HaveOccurred())
json, err := json.Marshal(fetchedSettings)
Expect(err).NotTo(HaveOccurred())
fileContent, err := fs.ReadFile("/setting/path")
Expect(err).NotTo(HaveOccurred())
Expect(fileContent).To(Equal(json))
})
It("returns any error from writing to the setting file", func() {
fs.WriteToFileError = errors.New("fs-write-file-error")
err := service.LoadSettings()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fs-write-file-error"))
})
})
Context("when settings contain multiple dynamic networks", func() {
BeforeEach(func() {
fetchedSettings.Networks = Networks{
"fake-net-1": Network{Type: NetworkTypeDynamic},
"fake-net-2": Network{Type: NetworkTypeDynamic},
}
})
It("returns error because multiple dynamic networks are not supported", func() {
err := service.LoadSettings()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("Multiple dynamic networks are not supported"))
})
})
})
Context("when settings fetcher fails fetching settings", func() {
BeforeEach(func() {
fetcherFuncErr = errors.New("fake-fetch-error")
})
Context("when a settings file exists", func() {
Context("when settings contain at most one dynamic network", func() {
BeforeEach(func() {
fs.WriteFile("/setting/path", []byte(`{
"agent_id":"some-agent-id",
"networks": {"fake-net-1": {"type": "dynamic"}}
}`))
})
It("returns settings from the settings file", func() {
err := service.LoadSettings()
Expect(err).ToNot(HaveOccurred())
Expect(service.GetSettings()).To(Equal(Settings{
AgentID: "some-agent-id",
Networks: Networks{
"fake-net-1": Network{Type: NetworkTypeDynamic},
},
}))
})
})
Context("when settings contain multiple dynamic networks", func() {
BeforeEach(func() {
fs.WriteFile("/setting/path", []byte(`{
"agent_id":"some-agent-id",
"networks": {
"fake-net-1": {"type": "dynamic"},
"fake-net-2": {"type": "dynamic"}
}
}`))
})
It("returns error because multiple dynamic networks are not supported", func() {
err := service.LoadSettings()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("Multiple dynamic networks are not supported"))
})
})
})
Context("when non-unmarshallable settings file exists", func() {
It("returns any error from the fetcher", func() {
fs.WriteFile("/setting/path", []byte(`$%^&*(`))
err := service.LoadSettings()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-fetch-error"))
Expect(service.GetSettings()).To(Equal(Settings{}))
})
})
Context("when no settings file exists", func() {
It("returns any error from the fetcher", func() {
err := service.LoadSettings()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-fetch-error"))
Expect(service.GetSettings()).To(Equal(Settings{}))
})
})
})
})
Describe("InvalidateSettings", func() {
It("removes the settings file", func() {
service, fs := buildService(nil)
fs.WriteFile("/setting/path", []byte(`{}`))
err := service.InvalidateSettings()
Expect(err).ToNot(HaveOccurred())
Expect(fs.FileExists("/setting/path")).To(BeFalse())
})
It("returns err if removing settings file errored", func() {
service, fs := buildService(nil)
fs.RemoveAllError = errors.New("fs-remove-all-error")
err := service.InvalidateSettings()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fs-remove-all-error"))
})
})
Describe("GetSettings", func() {
var (
loadedSettings Settings
service Service
)
BeforeEach(func() {
loadedSettings = Settings{AgentID: "some-agent-id"}
})
JustBeforeEach(func() {
service, _ = buildService(func() (Settings, error) { return loadedSettings, nil })
err := service.LoadSettings()
Expect(err).NotTo(HaveOccurred())
})
Context("when there is are no dynamic networks", func() {
It("returns settings without modifying any networks", func() {
Expect(service.GetSettings()).To(Equal(loadedSettings))
})
It("does not try to determine default network", func() {
_ = service.GetSettings()
Expect(platform.GetDefaultNetworkCalled).To(BeFalse())
})
})
Context("when there is one dynamic network", func() {
BeforeEach(func() {
loadedSettings = Settings{
Networks: map[string]Network{
"fake-net1": Network{
IP: "fake-net1-ip",
Netmask: "fake-net1-netmask",
Gateway: "fake-net1-gateway",
},
"fake-net2": Network{
Type: "dynamic",
IP: "fake-net2-ip",
Netmask: "fake-net2-netmask",
Gateway: "fake-net2-gateway",
DNS: []string{"fake-net2-dns"},
},
},
}
})
Context("when default network can be retrieved", func() {
BeforeEach(func() {
platform.GetDefaultNetworkNetwork = Network{
IP: "fake-resolved-ip",
Netmask: "fake-resolved-netmask",
Gateway: "fake-resolved-gateway",
}
})
It("returns settings with resolved dynamic network ip, netmask, gateway and keeping everything else the same", func() {
settings := service.GetSettings()
Expect(settings).To(Equal(Settings{
Networks: map[string]Network{
"fake-net1": Network{
IP: "fake-net1-ip",
Netmask: "fake-net1-netmask",
Gateway: "fake-net1-gateway",
},
"fake-net2": Network{
Type: "dynamic",
IP: "fake-resolved-ip",
Netmask: "fake-resolved-netmask",
Gateway: "fake-resolved-gateway",
DNS: []string{"fake-net2-dns"},
},
},
}))
})
})
Context("when default network fails to be retrieved", func() {
BeforeEach(func() {
platform.GetDefaultNetworkErr = errors.New("fake-get-default-network-err")
})
It("returns error", func() {
settings := service.GetSettings()
Expect(settings).To(Equal(loadedSettings))
})
})
})
})
})
}
BeforeEach(func() {
_, _, err := fileBundle.Install(sourcePath)
Expect(err).NotTo(HaveOccurred())
_, _, err = fileBundle.Enable()
Expect(err).NotTo(HaveOccurred())
})
It("does not return error and removes the symlink", func() {
err := fileBundle.Disable()
Expect(err).NotTo(HaveOccurred())
Expect(fs.FileExists(enablePath)).To(BeFalse())
})
It("returns error when bundle cannot be disabled", func() {
fs.RemoveAllError = errors.New("fake-removeall-error")
err := fileBundle.Disable()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-removeall-error"))
})
})
Context("where the enabled path target is a different installed version", func() {
newerInstallPath := "/newer-install-path"
BeforeEach(func() {
_, _, err := fileBundle.Install(sourcePath)
Expect(err).NotTo(HaveOccurred())
_, _, err = fileBundle.Enable()
func init() {
Describe("monitJobSupervisor", func() {
var (
fs *fakesys.FakeFileSystem
runner *fakesys.FakeCmdRunner
client *fakemonit.FakeMonitClient
logger boshlog.Logger
dirProvider boshdir.DirectoriesProvider
jobFailuresServerPort int
monit JobSupervisor
)
BeforeEach(func() {
fs = &fakesys.FakeFileSystem{}
runner = &fakesys.FakeCmdRunner{}
client = fakemonit.NewFakeMonitClient()
logger = boshlog.NewLogger(boshlog.LevelNone)
dirProvider = boshdir.NewDirectoriesProvider("/var/vcap")
jobFailuresServerPort = getJobFailureServerPort()
monit = NewMonitJobSupervisor(
fs,
runner,
client,
logger,
dirProvider,
jobFailuresServerPort,
0*time.Millisecond,
)
})
It("waits until the job is reloaded", func() {
client.Incarnations = []int{1, 1, 1, 2, 3}
client.StatusStatus = fakemonit.FakeMonitStatus{
Services: []boshmonit.Service{
boshmonit.Service{Monitored: true, Status: "failing"},
boshmonit.Service{Monitored: true, Status: "running"},
},
Incarnation: 1,
}
err := monit.Reload()
Expect(err).ToNot(HaveOccurred())
Expect(1).To(Equal(len(runner.RunCommands)))
Expect(runner.RunCommands[0]).To(Equal([]string{"monit", "reload"}))
Expect(client.StatusCalledTimes).To(Equal(4))
})
It("stops trying to reload after 60 attempts", func() {
for i := 0; i < 61; i++ {
client.Incarnations = append(client.Incarnations, 1)
}
client.StatusStatus = fakemonit.FakeMonitStatus{
Services: []boshmonit.Service{
boshmonit.Service{Monitored: true, Status: "failing"},
boshmonit.Service{Monitored: true, Status: "running"},
},
Incarnation: 1,
}
err := monit.Reload()
Expect(err).To(HaveOccurred())
Expect(1).To(Equal(len(runner.RunCommands)))
Expect(runner.RunCommands[0]).To(Equal([]string{"monit", "reload"}))
Expect(client.StatusCalledTimes).To(Equal(60))
})
It("start starts each monit service in group vcap", func() {
client.ServicesInGroupServices = []string{"fake-service"}
err := monit.Start()
Expect(err).ToNot(HaveOccurred())
Expect("vcap").To(Equal(client.ServicesInGroupName))
Expect(1).To(Equal(len(client.StartServiceNames)))
Expect("fake-service").To(Equal(client.StartServiceNames[0]))
})
It("stop stops each monit service in group vcap", func() {
client.ServicesInGroupServices = []string{"fake-service"}
err := monit.Stop()
Expect(err).ToNot(HaveOccurred())
Expect("vcap").To(Equal(client.ServicesInGroupName))
Expect(1).To(Equal(len(client.StopServiceNames)))
Expect("fake-service").To(Equal(client.StopServiceNames[0]))
})
It("status returns running when all services are monitored and running", func() {
client.StatusStatus = fakemonit.FakeMonitStatus{
Services: []boshmonit.Service{
boshmonit.Service{Monitored: true, Status: "running"},
boshmonit.Service{Monitored: true, Status: "running"},
},
}
status := monit.Status()
Expect("running").To(Equal(status))
})
It("status returns failing when all services are monitored and at least one service is failing", func() {
client.StatusStatus = fakemonit.FakeMonitStatus{
Services: []boshmonit.Service{
boshmonit.Service{Monitored: true, Status: "failing"},
boshmonit.Service{Monitored: true, Status: "running"},
},
}
status := monit.Status()
Expect("failing").To(Equal(status))
})
It("status returns failing when at least one service is not monitored", func() {
client.StatusStatus = fakemonit.FakeMonitStatus{
Services: []boshmonit.Service{
boshmonit.Service{Monitored: false, Status: "running"},
boshmonit.Service{Monitored: true, Status: "running"},
},
}
status := monit.Status()
Expect("failing").To(Equal(status))
})
It("status returns start when at least one service is starting", func() {
client.StatusStatus = fakemonit.FakeMonitStatus{
Services: []boshmonit.Service{
boshmonit.Service{Monitored: true, Status: "failing"},
boshmonit.Service{Monitored: true, Status: "starting"},
boshmonit.Service{Monitored: true, Status: "running"},
},
}
status := monit.Status()
Expect("starting").To(Equal(status))
})
It("status returns unknown when error", func() {
client.StatusErr = errors.New("fake-monit-client-error")
status := monit.Status()
Expect("unknown").To(Equal(status))
})
It("monitor job failures", func() {
var handledAlert boshalert.MonitAlert
failureHandler := func(alert boshalert.MonitAlert) (err error) {
handledAlert = alert
return
}
go monit.MonitorJobFailures(failureHandler)
msg := `Message-id: <1304319946.0@localhost>
Service: nats
Event: does not exist
Action: restart
Date: Sun, 22 May 2011 20:07:41 +0500
Description: process is not running`
err := doJobFailureEmail(msg, jobFailuresServerPort)
Expect(err).ToNot(HaveOccurred())
assert.Equal(GinkgoT(), handledAlert, boshalert.MonitAlert{
ID: "1304319946.0@localhost",
Service: "nats",
Event: "does not exist",
Action: "restart",
Date: "Sun, 22 May 2011 20:07:41 +0500",
Description: "process is not running",
})
})
It("monitor job failures ignores other emails", func() {
var didHandleAlert bool
failureHandler := func(alert boshalert.MonitAlert) (err error) {
didHandleAlert = true
return
}
go monit.MonitorJobFailures(failureHandler)
msg := `Hi! How'sit goin`
err := doJobFailureEmail(msg, jobFailuresServerPort)
Expect(err).ToNot(HaveOccurred())
Expect(didHandleAlert).To(BeFalse())
})
Describe("AddJob", func() {
BeforeEach(func() {
fs.WriteFileString("/some/config/path", "fake-config")
})
Context("when reading configuration from config path succeeds", func() {
Context("when writing job configuration succeeds", func() {
It("returns no error because monit can track added job in jobs directory", func() {
err := monit.AddJob("router", 0, "/some/config/path")
Expect(err).ToNot(HaveOccurred())
writtenConfig, err := fs.ReadFileString(
dirProvider.MonitJobsDir() + "/0000_router.monitrc")
Expect(err).ToNot(HaveOccurred())
Expect(writtenConfig).To(Equal("fake-config"))
})
})
Context("when writing job configuration fails", func() {
It("returns error", func() {
fs.WriteToFileError = errors.New("fake-write-error")
err := monit.AddJob("router", 0, "/some/config/path")
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-write-error"))
})
})
})
Context("when reading configuration from config path fails", func() {
It("returns error", func() {
fs.ReadFileError = errors.New("fake-read-error")
err := monit.AddJob("router", 0, "/some/config/path")
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-read-error"))
})
})
})
Describe("RemoveAllJobs", func() {
Context("when jobs directory removal succeeds", func() {
It("does not return error because all jobs are removed from monit", func() {
jobsDir := dirProvider.MonitJobsDir()
jobBasename := "/0000_router.monitrc"
fs.WriteFileString(jobsDir+jobBasename, "fake-added-job")
err := monit.RemoveAllJobs()
Expect(err).ToNot(HaveOccurred())
Expect(fs.FileExists(jobsDir)).To(BeFalse())
Expect(fs.FileExists(jobsDir + jobBasename)).To(BeFalse())
})
})
Context("when jobs directory removal fails", func() {
It("returns error if removing jobs directory fails", func() {
fs.RemoveAllError = errors.New("fake-remove-all-error")
err := monit.RemoveAllJobs()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-remove-all-error"))
})
})
})
Describe("Unmonitor", func() {
BeforeEach(func() {
client.ServicesInGroupServices = []string{"fake-srv-1", "fake-srv-2", "fake-srv-3"}
client.UnmonitorServiceErrs = []error{nil, nil, nil}
})
Context("when all services succeed to be unmonitored", func() {
It("returns no error because all services got unmonitored", func() {
err := monit.Unmonitor()
Expect(err).ToNot(HaveOccurred())
Expect(client.ServicesInGroupName).To(Equal("vcap"))
Expect(client.UnmonitorServiceNames).To(Equal(
[]string{"fake-srv-1", "fake-srv-2", "fake-srv-3"}))
})
})
Context("when at least one service fails to be unmonitored", func() {
BeforeEach(func() {
client.UnmonitorServiceErrs = []error{
nil, errors.New("fake-unmonitor-error"), nil,
}
})
It("returns first unmonitor error", func() {
err := monit.Unmonitor()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-unmonitor-error"))
})
It("only tries to unmonitor services before the first unmonitor error", func() {
err := monit.Unmonitor()
Expect(err).To(HaveOccurred())
Expect(client.ServicesInGroupName).To(Equal("vcap"))
Expect(client.UnmonitorServiceNames).To(Equal([]string{"fake-srv-1", "fake-srv-2"}))
})
})
Context("when failed retrieving list of services", func() {
It("returns error", func() {
client.ServicesInGroupErr = errors.New("fake-services-error")
err := monit.Unmonitor()
Expect(err).To(HaveOccurred())
Expect(err.Error()).To(ContainSubstring("fake-services-error"))
})
})
})
})
}