func TestControls(t *testing.T) {
mdc := newMockClient()
setupStubs(mdc, func() {
registry, _ := docker.NewRegistry(10*time.Second, nil, false, "")
defer registry.Stop()
for _, tc := range []struct{ command, result string }{
{docker.StopContainer, "stopped"},
{docker.StartContainer, "started"},
{docker.RestartContainer, "restarted"},
{docker.PauseContainer, "paused"},
{docker.UnpauseContainer, "unpaused"},
} {
result := controls.HandleControlRequest(xfer.Request{
Control: tc.command,
NodeID: report.MakeContainerNodeID("a1b2c3d4e5"),
})
if !reflect.DeepEqual(result, xfer.Response{
Error: tc.result,
}) {
t.Error(result)
}
}
})
}
func TestPipes(t *testing.T) {
oldNewPipe := controls.NewPipe
defer func() { controls.NewPipe = oldNewPipe }()
controls.NewPipe = func(_ controls.PipeClient, _ string) (string, xfer.Pipe, error) {
return "pipeid", mockPipe{}, nil
}
mdc := newMockClient()
setupStubs(mdc, func() {
registry, _ := docker.NewRegistry(10*time.Second, nil, false, "")
defer registry.Stop()
test.Poll(t, 100*time.Millisecond, true, func() interface{} {
_, ok := registry.GetContainer("ping")
return ok
})
for _, tc := range []string{
docker.AttachContainer,
docker.ExecContainer,
} {
result := controls.HandleControlRequest(xfer.Request{
Control: tc,
NodeID: report.MakeContainerNodeID("ping"),
})
want := xfer.Response{
Pipe: "pipeid",
RawTTY: true,
}
if !reflect.DeepEqual(result, want) {
t.Errorf("diff %s: %s", tc, test.Diff(want, result))
}
}
})
}
func main() {
dockerRegistry, err := docker.NewRegistry(pollInterval, nil, false, "")
if err != nil {
log.Fatalf("Could start docker watcher: %v", err)
}
store := newStore()
tracer := tracer{
store: store,
ptrace: ptrace.NewPTracer(store),
docker: dockerRegistry,
}
defer tracer.Stop()
go tracer.http(6060)
<-handleSignals()
}
// Main runs the probe
func probeMain(flags probeFlags) {
setLogLevel(flags.logLevel)
setLogFormatter(flags.logPrefix)
// Setup in memory metrics sink
inm := metrics.NewInmemSink(time.Minute, 2*time.Minute)
sig := metrics.DefaultInmemSignal(inm)
defer sig.Stop()
metrics.NewGlobal(metrics.DefaultConfig("scope-probe"), inm)
defer log.Info("probe exiting")
if flags.spyProcs && os.Getegid() != 0 {
log.Warn("--probe.process=true, but that requires root to find everything")
}
rand.Seed(time.Now().UnixNano())
var (
probeID = strconv.FormatInt(rand.Int63(), 16)
hostName = hostname.Get()
hostID = hostName // TODO(pb): we should sanitize the hostname
)
log.Infof("probe starting, version %s, ID %s", version, probeID)
log.Infof("command line: %v", os.Args)
checkpointFlags := map[string]string{}
if flags.kubernetesEnabled {
checkpointFlags["kubernetes_enabled"] = "true"
}
go check(checkpointFlags)
var targets = []string{}
if !flags.noApp {
targets = append(targets, fmt.Sprintf("localhost:%d", xfer.AppPort))
}
if len(flag.Args()) > 0 {
targets = append(targets, flag.Args()...)
}
log.Infof("publishing to: %s", strings.Join(targets, ", "))
probeConfig := appclient.ProbeConfig{
Token: flags.token,
ProbeID: probeID,
Insecure: flags.insecure,
}
clients := appclient.NewMultiAppClient(func(hostname, endpoint string) (appclient.AppClient, error) {
return appclient.NewAppClient(
probeConfig, hostname, endpoint,
xfer.ControlHandlerFunc(controls.HandleControlRequest),
)
})
defer clients.Stop()
dnsLookupFn := net.LookupIP
if flags.resolver != "" {
dnsLookupFn = appclient.LookupUsing(flags.resolver)
}
resolver := appclient.NewResolver(targets, dnsLookupFn, clients.Set)
defer resolver.Stop()
processCache := process.NewCachingWalker(process.NewWalker(flags.procRoot))
scanner := procspy.NewConnectionScanner(processCache)
endpointReporter := endpoint.NewReporter(hostID, hostName, flags.spyProcs, flags.useConntrack, scanner)
defer endpointReporter.Stop()
p := probe.New(flags.spyInterval, flags.publishInterval, clients)
p.AddTicker(processCache)
hostReporter := host.NewReporter(hostID, hostName, probeID, version, clients)
defer hostReporter.Stop()
p.AddReporter(
endpointReporter,
hostReporter,
process.NewReporter(processCache, hostID, process.GetDeltaTotalJiffies),
)
p.AddTagger(probe.NewTopologyTagger(), host.NewTagger(hostID))
if flags.dockerEnabled {
// Don't add the bridge in Kubernetes since container IPs are global and
// shouldn't be scoped
if !flags.kubernetesEnabled {
if err := report.AddLocalBridge(flags.dockerBridge); err != nil {
log.Errorf("Docker: problem with bridge %s: %v", flags.dockerBridge, err)
}
}
if registry, err := docker.NewRegistry(flags.dockerInterval, clients, true, hostID); err == nil {
defer registry.Stop()
p.AddTagger(docker.NewTagger(registry, processCache))
p.AddReporter(docker.NewReporter(registry, hostID, probeID, p))
} else {
log.Errorf("Docker: failed to start registry: %v", err)
}
}
if flags.kubernetesEnabled {
if client, err := kubernetes.NewClient(flags.kubernetesAPI, flags.kubernetesInterval); err == nil {
defer client.Stop()
reporter := kubernetes.NewReporter(client, clients, probeID, hostID, p)
defer reporter.Stop()
p.AddReporter(reporter)
p.AddTagger(reporter)
} else {
log.Errorf("Kubernetes: failed to start client: %v", err)
log.Errorf("Kubernetes: make sure to run Scope inside a POD with a service account or provide a valid kubernetes.api url")
}
}
if flags.weaveAddr != "" {
client := weave.NewClient(sanitize.URL("http://", 6784, "")(flags.weaveAddr))
weave := overlay.NewWeave(hostID, client)
defer weave.Stop()
p.AddTagger(weave)
p.AddReporter(weave)
dockerBridgeIP, err := network.GetFirstAddressOf(flags.dockerBridge)
if err != nil {
log.Println("Error getting docker bridge ip:", err)
} else {
weaveDNSLookup := appclient.LookupUsing(dockerBridgeIP + ":53")
weaveResolver := appclient.NewResolver([]string{flags.weaveHostname}, weaveDNSLookup, clients.Set)
defer weaveResolver.Stop()
}
}
pluginRegistry, err := plugins.NewRegistry(
flags.pluginsRoot,
pluginAPIVersion,
map[string]string{
"probe_id": probeID,
"api_version": pluginAPIVersion,
},
)
if err != nil {
log.Errorf("plugins: problem loading: %v", err)
} else {
defer pluginRegistry.Close()
p.AddReporter(pluginRegistry)
}
if flags.httpListen != "" {
go func() {
log.Infof("Profiling data being exported to %s", flags.httpListen)
log.Infof("go tool pprof http://%s/debug/pprof/{profile,heap,block}", flags.httpListen)
log.Infof("Profiling endpoint %s terminated: %v", flags.httpListen, http.ListenAndServe(flags.httpListen, nil))
}()
}
p.Start()
defer p.Stop()
common.SignalHandlerLoop()
}