Exemplo n.º 1
0
// NewRequestAuthenticator creates an http handler that tries to authenticate the given request as a user, and then
// stores any such user found onto the provided context for the request. If authentication fails or returns an error
// the failed handler is used. On success, "Authorization" header is removed from the request and handler
// is invoked to serve the request.
func NewRequestAuthenticator(mapper api.RequestContextMapper, auth authenticator.Request, failed http.Handler, handler http.Handler) (http.Handler, error) {
	return api.NewRequestContextFilter(
		mapper,
		http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
			user, ok, err := auth.AuthenticateRequest(req)
			if err != nil || !ok {
				if err != nil {
					glog.Errorf("Unable to authenticate the request due to an error: %v", err)
				}
				failed.ServeHTTP(w, req)
				return
			}

			// authorization header is not required anymore in case of a successful authentication.
			req.Header.Del("Authorization")

			if ctx, ok := mapper.Get(req); ok {
				mapper.Update(req, api.WithUser(ctx, user))
			}

			authenticatedUserCounter.WithLabelValues(compressUsername(user.GetName())).Inc()

			handler.ServeHTTP(w, req)
		}),
	)
}
Exemplo n.º 2
0
// NewRequestAuthenticator creates an http handler that tries to authenticate the given request as a user, and then
// stores any such user found onto the provided context for the request. If authentication fails or returns an error
// the failed handler is used. On success, handler is invoked to serve the request.
func NewRequestAuthenticator(mapper api.RequestContextMapper, auth authenticator.Request, failed http.Handler, handler http.Handler) (http.Handler, error) {
	return api.NewRequestContextFilter(
		mapper,
		http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
			user, ok, err := auth.AuthenticateRequest(req)
			if err != nil || !ok {
				if err != nil {
					glog.Errorf("Unable to authenticate the request due to an error: %v", err)
				}
				failed.ServeHTTP(w, req)
				return
			}

			if ctx, ok := mapper.Get(req); ok {
				mapper.Update(req, api.WithUser(ctx, user))
			}

			handler.ServeHTTP(w, req)
		}),
	)
}
Exemplo n.º 3
0
// Run launches the OpenShift master. It takes optional installers that may install additional endpoints into the server.
// All endpoints get configured CORS behavior
// Protected installers' endpoints are protected by API authentication and authorization.
// Unprotected installers' endpoints do not have any additional protection added.
func (c *MasterConfig) Run(protected []APIInstaller, unprotected []APIInstaller) {
	var extra []string

	safe := kmaster.NewHandlerContainer(http.NewServeMux())
	open := kmaster.NewHandlerContainer(http.NewServeMux())

	// enforce authentication on protected endpoints
	protected = append(protected, APIInstallFunc(c.InstallProtectedAPI))
	for _, i := range protected {
		extra = append(extra, i.InstallAPI(safe)...)
	}
	handler := c.authorizationFilter(safe)
	handler = authenticationHandlerFilter(handler, c.Authenticator, c.getRequestContextMapper())
	handler = namespacingFilter(handler, c.getRequestContextMapper())
	handler = cacheControlFilter(handler, "no-store") // protected endpoints should not be cached

	// unprotected resources
	unprotected = append(unprotected, APIInstallFunc(c.InstallUnprotectedAPI))
	for _, i := range unprotected {
		extra = append(extra, i.InstallAPI(open)...)
	}

	handler = indexAPIPaths(handler)

	open.Handle("/", handler)

	// install swagger
	swaggerConfig := swagger.Config{
		WebServicesUrl:   c.Options.MasterPublicURL,
		WebServices:      append(safe.RegisteredWebServices(), open.RegisteredWebServices()...),
		ApiPath:          swaggerAPIPrefix,
		PostBuildHandler: customizeSwaggerDefinition,
	}
	// log nothing from swagger
	swagger.LogInfo = func(format string, v ...interface{}) {}
	swagger.RegisterSwaggerService(swaggerConfig, open)
	extra = append(extra, fmt.Sprintf("Started Swagger Schema API at %%s%s", swaggerAPIPrefix))

	handler = open

	// add CORS support
	if origins := c.ensureCORSAllowedOrigins(); len(origins) != 0 {
		handler = apiserver.CORS(handler, origins, nil, nil, "true")
	}

	if c.WebConsoleEnabled() {
		handler = assetServerRedirect(handler, c.Options.AssetConfig.PublicURL)
	}

	// Make the outermost filter the requestContextMapper to ensure all components share the same context
	if contextHandler, err := kapi.NewRequestContextFilter(c.getRequestContextMapper(), handler); err != nil {
		glog.Fatalf("Error setting up request context filter: %v", err)
	} else {
		handler = contextHandler
	}

	// TODO: MaxRequestsInFlight should be subdivided by intent, type of behavior, and speed of
	// execution - updates vs reads, long reads vs short reads, fat reads vs skinny reads.
	if c.Options.ServingInfo.MaxRequestsInFlight > 0 {
		sem := make(chan bool, c.Options.ServingInfo.MaxRequestsInFlight)
		handler = apiserver.MaxInFlightLimit(sem, longRunningRE, handler)
	}

	c.serve(handler, extra)

	// Attempt to verify the server came up for 20 seconds (100 tries * 100ms, 100ms timeout per try)
	cmdutil.WaitForSuccessfulDial(c.TLS, c.Options.ServingInfo.BindNetwork, c.Options.ServingInfo.BindAddress, 100*time.Millisecond, 100*time.Millisecond, 100)
}
Exemplo n.º 4
0
// init initializes master.
func (m *Master) init(c *Config) {
	healthzChecks := []healthz.HealthzChecker{}
	m.clock = util.RealClock{}
	podStorage := podetcd.NewStorage(c.DatabaseStorage, c.KubeletClient)

	podTemplateStorage := podtemplateetcd.NewREST(c.DatabaseStorage)

	eventRegistry := event.NewEtcdRegistry(c.DatabaseStorage, uint64(c.EventTTL.Seconds()))
	limitRangeStorage := limitrangeetcd.NewStorage(c.DatabaseStorage)

	resourceQuotaStorage, resourceQuotaStatusStorage := resourcequotaetcd.NewStorage(c.DatabaseStorage)
	secretStorage := secretetcd.NewStorage(c.DatabaseStorage)
	serviceAccountStorage := serviceaccountetcd.NewStorage(c.DatabaseStorage)
	persistentVolumeStorage, persistentVolumeStatusStorage := pvetcd.NewStorage(c.DatabaseStorage)
	persistentVolumeClaimStorage, persistentVolumeClaimStatusStorage := pvcetcd.NewStorage(c.DatabaseStorage)

	namespaceStorage, namespaceStatusStorage, namespaceFinalizeStorage := namespaceetcd.NewStorage(c.DatabaseStorage)
	m.namespaceRegistry = namespace.NewRegistry(namespaceStorage)

	endpointsStorage := endpointsetcd.NewStorage(c.DatabaseStorage)
	m.endpointRegistry = endpoint.NewRegistry(endpointsStorage)

	nodeStorage, nodeStatusStorage := nodeetcd.NewStorage(c.DatabaseStorage, c.KubeletClient)
	m.nodeRegistry = minion.NewRegistry(nodeStorage)

	serviceStorage := serviceetcd.NewStorage(c.DatabaseStorage)
	m.serviceRegistry = service.NewRegistry(serviceStorage)

	var serviceClusterIPRegistry service.RangeRegistry
	serviceClusterIPAllocator := ipallocator.NewAllocatorCIDRRange(m.serviceClusterIPRange, func(max int, rangeSpec string) allocator.Interface {
		mem := allocator.NewAllocationMap(max, rangeSpec)
		etcd := etcdallocator.NewEtcd(mem, "/ranges/serviceips", "serviceipallocation", c.DatabaseStorage)
		serviceClusterIPRegistry = etcd
		return etcd
	})
	m.serviceClusterIPAllocator = serviceClusterIPRegistry

	var serviceNodePortRegistry service.RangeRegistry
	serviceNodePortAllocator := portallocator.NewPortAllocatorCustom(m.serviceNodePortRange, func(max int, rangeSpec string) allocator.Interface {
		mem := allocator.NewAllocationMap(max, rangeSpec)
		etcd := etcdallocator.NewEtcd(mem, "/ranges/servicenodeports", "servicenodeportallocation", c.DatabaseStorage)
		serviceNodePortRegistry = etcd
		return etcd
	})
	m.serviceNodePortAllocator = serviceNodePortRegistry

	controllerStorage := controlleretcd.NewREST(c.DatabaseStorage)

	// TODO: Factor out the core API registration
	m.storage = map[string]rest.Storage{
		"pods":             podStorage.Pod,
		"pods/attach":      podStorage.Attach,
		"pods/status":      podStorage.Status,
		"pods/log":         podStorage.Log,
		"pods/exec":        podStorage.Exec,
		"pods/portforward": podStorage.PortForward,
		"pods/proxy":       podStorage.Proxy,
		"pods/binding":     podStorage.Binding,
		"bindings":         podStorage.Binding,

		"podTemplates": podTemplateStorage,

		"replicationControllers": controllerStorage,
		"services":               service.NewStorage(m.serviceRegistry, m.endpointRegistry, serviceClusterIPAllocator, serviceNodePortAllocator),
		"endpoints":              endpointsStorage,
		"nodes":                  nodeStorage,
		"nodes/status":           nodeStatusStorage,
		"events":                 event.NewStorage(eventRegistry),

		"limitRanges":                   limitRangeStorage,
		"resourceQuotas":                resourceQuotaStorage,
		"resourceQuotas/status":         resourceQuotaStatusStorage,
		"namespaces":                    namespaceStorage,
		"namespaces/status":             namespaceStatusStorage,
		"namespaces/finalize":           namespaceFinalizeStorage,
		"secrets":                       secretStorage,
		"serviceAccounts":               serviceAccountStorage,
		"persistentVolumes":             persistentVolumeStorage,
		"persistentVolumes/status":      persistentVolumeStatusStorage,
		"persistentVolumeClaims":        persistentVolumeClaimStorage,
		"persistentVolumeClaims/status": persistentVolumeClaimStatusStorage,

		"componentStatuses": componentstatus.NewStorage(func() map[string]apiserver.Server { return m.getServersToValidate(c) }),
	}

	// establish the node proxy dialer
	if len(c.SSHUser) > 0 {
		// Usernames are capped @ 32
		if len(c.SSHUser) > 32 {
			glog.Warning("SSH User is too long, truncating to 32 chars")
			c.SSHUser = c.SSHUser[0:32]
		}
		glog.Infof("Setting up proxy: %s %s", c.SSHUser, c.SSHKeyfile)

		// public keyfile is written last, so check for that.
		publicKeyFile := c.SSHKeyfile + ".pub"
		exists, err := util.FileExists(publicKeyFile)
		if err != nil {
			glog.Errorf("Error detecting if key exists: %v", err)
		} else if !exists {
			glog.Infof("Key doesn't exist, attempting to create")
			err := m.generateSSHKey(c.SSHUser, c.SSHKeyfile, publicKeyFile)
			if err != nil {
				glog.Errorf("Failed to create key pair: %v", err)
			}
		}
		m.tunnels = &util.SSHTunnelList{}
		m.dialer = m.Dial
		m.setupSecureProxy(c.SSHUser, c.SSHKeyfile, publicKeyFile)
		m.lastSync = m.clock.Now().Unix()

		// This is pretty ugly.  A better solution would be to pull this all the way up into the
		// server.go file.
		httpKubeletClient, ok := c.KubeletClient.(*client.HTTPKubeletClient)
		if ok {
			httpKubeletClient.Config.Dial = m.dialer
			transport, err := client.MakeTransport(httpKubeletClient.Config)
			if err != nil {
				glog.Errorf("Error setting up transport over SSH: %v", err)
			} else {
				httpKubeletClient.Client.Transport = transport
			}
		} else {
			glog.Errorf("Failed to cast %v to HTTPKubeletClient, skipping SSH tunnel.", c.KubeletClient)
		}
		healthzChecks = append(healthzChecks, healthz.NamedCheck("SSH Tunnel Check", m.IsTunnelSyncHealthy))
		m.lastSyncMetric = prometheus.NewGaugeFunc(prometheus.GaugeOpts{
			Name: "apiserver_proxy_tunnel_sync_latency_secs",
			Help: "The time since the last successful synchronization of the SSH tunnels for proxy requests.",
		}, func() float64 { return float64(m.secondsSinceSync()) })
	}

	apiVersions := []string{}
	if m.v1 {
		if err := m.api_v1().InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup API v1: %v", err)
		}
		apiVersions = append(apiVersions, "v1")
	}

	apiserver.InstallSupport(m.muxHelper, m.rootWebService, c.EnableProfiling, healthzChecks...)
	apiserver.AddApiWebService(m.handlerContainer, c.APIPrefix, apiVersions)
	defaultVersion := m.defaultAPIGroupVersion()
	requestInfoResolver := &apiserver.APIRequestInfoResolver{APIPrefixes: util.NewStringSet(strings.TrimPrefix(defaultVersion.Root, "/")), RestMapper: defaultVersion.Mapper}
	apiserver.InstallServiceErrorHandler(m.handlerContainer, requestInfoResolver, apiVersions)

	if m.exp {
		expVersion := m.expapi(c)
		if err := expVersion.InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup experimental api: %v", err)
		}
		apiserver.AddApiWebService(m.handlerContainer, c.ExpAPIPrefix, []string{expVersion.Version})
		expRequestInfoResolver := &apiserver.APIRequestInfoResolver{APIPrefixes: util.NewStringSet(strings.TrimPrefix(expVersion.Root, "/")), RestMapper: expVersion.Mapper}
		apiserver.InstallServiceErrorHandler(m.handlerContainer, expRequestInfoResolver, []string{expVersion.Version})
	}

	// Register root handler.
	// We do not register this using restful Webservice since we do not want to surface this in api docs.
	// Allow master to be embedded in contexts which already have something registered at the root
	if c.EnableIndex {
		m.mux.HandleFunc("/", apiserver.IndexHandler(m.handlerContainer, m.muxHelper))
	}

	if c.EnableLogsSupport {
		apiserver.InstallLogsSupport(m.muxHelper)
	}
	if c.EnableUISupport {
		ui.InstallSupport(m.muxHelper, m.enableSwaggerSupport)
	}

	if c.EnableProfiling {
		m.mux.HandleFunc("/debug/pprof/", pprof.Index)
		m.mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
		m.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
	}

	handler := http.Handler(m.mux.(*http.ServeMux))

	// TODO: handle CORS and auth using go-restful
	// See github.com/emicklei/go-restful/blob/master/examples/restful-CORS-filter.go, and
	// github.com/emicklei/go-restful/blob/master/examples/restful-basic-authentication.go

	if len(c.CorsAllowedOriginList) > 0 {
		allowedOriginRegexps, err := util.CompileRegexps(c.CorsAllowedOriginList)
		if err != nil {
			glog.Fatalf("Invalid CORS allowed origin, --cors-allowed-origins flag was set to %v - %v", strings.Join(c.CorsAllowedOriginList, ","), err)
		}
		handler = apiserver.CORS(handler, allowedOriginRegexps, nil, nil, "true")
	}

	m.InsecureHandler = handler

	attributeGetter := apiserver.NewRequestAttributeGetter(m.requestContextMapper, latest.RESTMapper, "api")
	handler = apiserver.WithAuthorizationCheck(handler, attributeGetter, m.authorizer)

	// Install Authenticator
	if c.Authenticator != nil {
		authenticatedHandler, err := handlers.NewRequestAuthenticator(m.requestContextMapper, c.Authenticator, handlers.Unauthorized(c.SupportsBasicAuth), handler)
		if err != nil {
			glog.Fatalf("Could not initialize authenticator: %v", err)
		}
		handler = authenticatedHandler
	}

	// Install root web services
	m.handlerContainer.Add(m.rootWebService)

	// TODO: Make this optional?  Consumers of master depend on this currently.
	m.Handler = handler

	if m.enableSwaggerSupport {
		m.InstallSwaggerAPI()
	}

	// After all wrapping is done, put a context filter around both handlers
	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.Handler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.Handler = handler
	}

	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.InsecureHandler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.InsecureHandler = handler
	}

	// TODO: Attempt clean shutdown?
	if m.enableCoreControllers {
		m.NewBootstrapController().Start()
	}
}
Exemplo n.º 5
0
// init initializes GenericAPIServer.
func (s *GenericAPIServer) init(c *Config) {

	if c.ProxyDialer != nil || c.ProxyTLSClientConfig != nil {
		s.ProxyTransport = utilnet.SetTransportDefaults(&http.Transport{
			Dial:            c.ProxyDialer,
			TLSClientConfig: c.ProxyTLSClientConfig,
		})
	}

	// Register root handler.
	// We do not register this using restful Webservice since we do not want to surface this in api docs.
	// Allow GenericAPIServer to be embedded in contexts which already have something registered at the root
	if c.EnableIndex {
		s.mux.HandleFunc("/", apiserver.IndexHandler(s.HandlerContainer, s.MuxHelper))
	}

	if c.EnableLogsSupport {
		apiserver.InstallLogsSupport(s.MuxHelper)
	}
	if c.EnableUISupport {
		ui.InstallSupport(s.MuxHelper, s.enableSwaggerSupport && s.enableSwaggerUI)
	}

	if c.EnableProfiling {
		s.mux.HandleFunc("/debug/pprof/", pprof.Index)
		s.mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
		s.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
	}

	handler := http.Handler(s.mux.(*http.ServeMux))

	// TODO: handle CORS and auth using go-restful
	// See github.com/emicklei/go-restful/blob/GenericAPIServer/examples/restful-CORS-filter.go, and
	// github.com/emicklei/go-restful/blob/GenericAPIServer/examples/restful-basic-authentication.go

	if len(c.CorsAllowedOriginList) > 0 {
		allowedOriginRegexps, err := util.CompileRegexps(c.CorsAllowedOriginList)
		if err != nil {
			glog.Fatalf("Invalid CORS allowed origin, --cors-allowed-origins flag was set to %v - %v", strings.Join(c.CorsAllowedOriginList, ","), err)
		}
		handler = apiserver.CORS(handler, allowedOriginRegexps, nil, nil, "true")
	}

	s.InsecureHandler = handler

	attributeGetter := apiserver.NewRequestAttributeGetter(s.RequestContextMapper, s.NewRequestInfoResolver())
	handler = apiserver.WithAuthorizationCheck(handler, attributeGetter, s.authorizer)

	// Install Authenticator
	if c.Authenticator != nil {
		authenticatedHandler, err := handlers.NewRequestAuthenticator(s.RequestContextMapper, c.Authenticator, handlers.Unauthorized(c.SupportsBasicAuth), handler)
		if err != nil {
			glog.Fatalf("Could not initialize authenticator: %v", err)
		}
		handler = authenticatedHandler
	}

	// TODO: Make this optional?  Consumers of GenericAPIServer depend on this currently.
	s.Handler = handler

	// After all wrapping is done, put a context filter around both handlers
	if handler, err := api.NewRequestContextFilter(s.RequestContextMapper, s.Handler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		s.Handler = handler
	}

	if handler, err := api.NewRequestContextFilter(s.RequestContextMapper, s.InsecureHandler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		s.InsecureHandler = handler
	}

	s.installGroupsDiscoveryHandler()
}
Exemplo n.º 6
0
// Run launches the OpenShift master. It takes optional installers that may install additional endpoints into the server.
// All endpoints get configured CORS behavior
// Protected installers' endpoints are protected by API authentication and authorization.
// Unprotected installers' endpoints do not have any additional protection added.
func (c *MasterConfig) Run(protected []APIInstaller, unprotected []APIInstaller) {
	var extra []string

	safe := kmaster.NewHandlerContainer(http.NewServeMux())
	open := kmaster.NewHandlerContainer(http.NewServeMux())

	// enforce authentication on protected endpoints
	protected = append(protected, APIInstallFunc(c.InstallProtectedAPI))
	for _, i := range protected {
		extra = append(extra, i.InstallAPI(safe)...)
	}
	handler := c.authorizationFilter(safe)
	handler = authenticationHandlerFilter(handler, c.Authenticator, c.getRequestContextMapper())
	handler = namespacingFilter(handler, c.getRequestContextMapper())
	handler = cacheControlFilter(handler, "no-store") // protected endpoints should not be cached

	// unprotected resources
	unprotected = append(unprotected, APIInstallFunc(c.InstallUnprotectedAPI))
	for _, i := range unprotected {
		extra = append(extra, i.InstallAPI(open)...)
	}

	handler = indexAPIPaths(handler)

	open.Handle("/", handler)

	// install swagger
	swaggerConfig := swagger.Config{
		WebServicesUrl:   c.Options.MasterPublicURL,
		WebServices:      append(safe.RegisteredWebServices(), open.RegisteredWebServices()...),
		ApiPath:          swaggerAPIPrefix,
		PostBuildHandler: customizeSwaggerDefinition,
	}
	// log nothing from swagger
	swagger.LogInfo = func(format string, v ...interface{}) {}
	swagger.RegisterSwaggerService(swaggerConfig, open)
	extra = append(extra, fmt.Sprintf("Started Swagger Schema API at %%s%s", swaggerAPIPrefix))

	handler = open

	// add CORS support
	if origins := c.ensureCORSAllowedOrigins(); len(origins) != 0 {
		handler = apiserver.CORS(handler, origins, nil, nil, "true")
	}

	if c.WebConsoleEnabled() {
		handler = assetServerRedirect(handler, c.Options.AssetConfig.PublicURL)
	}

	// Make the outermost filter the requestContextMapper to ensure all components share the same context
	if contextHandler, err := kapi.NewRequestContextFilter(c.getRequestContextMapper(), handler); err != nil {
		glog.Fatalf("Error setting up request context filter: %v", err)
	} else {
		handler = contextHandler
	}

	// TODO: MaxRequestsInFlight should be subdivided by intent, type of behavior, and speed of
	// execution - updates vs reads, long reads vs short reads, fat reads vs skinny reads.
	if c.Options.ServingInfo.MaxRequestsInFlight > 0 {
		sem := make(chan bool, c.Options.ServingInfo.MaxRequestsInFlight)
		handler = apiserver.MaxInFlightLimit(sem, longRunningRE, handler)
	}

	timeout := c.Options.ServingInfo.RequestTimeoutSeconds
	if timeout == -1 {
		timeout = 0
	}

	server := &http.Server{
		Addr:           c.Options.ServingInfo.BindAddress,
		Handler:        handler,
		ReadTimeout:    time.Duration(timeout) * time.Second,
		WriteTimeout:   time.Duration(timeout) * time.Second,
		MaxHeaderBytes: 1 << 20,
	}

	go util.Forever(func() {
		for _, s := range extra {
			glog.Infof(s, c.Options.ServingInfo.BindAddress)
		}
		if c.TLS {
			server.TLSConfig = &tls.Config{
				// Change default from SSLv3 to TLSv1.0 (because of POODLE vulnerability)
				MinVersion: tls.VersionTLS10,
				// Populate PeerCertificates in requests, but don't reject connections without certificates
				// This allows certificates to be validated by authenticators, while still allowing other auth types
				ClientAuth: tls.RequestClientCert,
				ClientCAs:  c.ClientCAs,
			}
			glog.Fatal(cmdutil.ListenAndServeTLS(server, c.Options.ServingInfo.BindNetwork, c.Options.ServingInfo.ServerCert.CertFile, c.Options.ServingInfo.ServerCert.KeyFile))
		} else {
			glog.Fatal(server.ListenAndServe())
		}
	}, 0)

	// Attempt to verify the server came up for 20 seconds (100 tries * 100ms, 100ms timeout per try)
	cmdutil.WaitForSuccessfulDial(c.TLS, c.Options.ServingInfo.BindNetwork, c.Options.ServingInfo.BindAddress, 100*time.Millisecond, 100*time.Millisecond, 100)

	// Create required policy rules if needed
	c.ensureComponentAuthorizationRules()
	// Ensure the default SCCs are created
	c.ensureDefaultSecurityContextConstraints()
	// Bind default roles for service accounts in the default namespace if needed
	c.ensureDefaultNamespaceServiceAccountRoles()

	// Create the infra namespace
	c.ensureOpenShiftInfraNamespace()

	// Create the shared resource namespace
	c.ensureOpenShiftSharedResourcesNamespace()
}
Exemplo n.º 7
0
// init initializes master.
func (m *Master) init(c *Config) {

	if c.ProxyDialer != nil || c.ProxyTLSClientConfig != nil {
		m.proxyTransport = util.SetTransportDefaults(&http.Transport{
			Dial:            c.ProxyDialer,
			TLSClientConfig: c.ProxyTLSClientConfig,
		})
	}

	healthzChecks := []healthz.HealthzChecker{}

	storageDecorator := c.storageDecorator()
	dbClient := func(resource string) storage.Interface { return c.StorageDestinations.get("", resource) }
	podStorage := podetcd.NewStorage(dbClient("pods"), storageDecorator, c.KubeletClient, m.proxyTransport)

	podTemplateStorage := podtemplateetcd.NewREST(dbClient("podTemplates"), storageDecorator)

	eventStorage := eventetcd.NewREST(dbClient("events"), storageDecorator, uint64(c.EventTTL.Seconds()))
	limitRangeStorage := limitrangeetcd.NewREST(dbClient("limitRanges"), storageDecorator)

	resourceQuotaStorage, resourceQuotaStatusStorage := resourcequotaetcd.NewREST(dbClient("resourceQuotas"), storageDecorator)
	secretStorage := secretetcd.NewREST(dbClient("secrets"), storageDecorator)
	serviceAccountStorage := serviceaccountetcd.NewREST(dbClient("serviceAccounts"), storageDecorator)
	persistentVolumeStorage, persistentVolumeStatusStorage := pvetcd.NewREST(dbClient("persistentVolumes"), storageDecorator)
	persistentVolumeClaimStorage, persistentVolumeClaimStatusStorage := pvcetcd.NewREST(dbClient("persistentVolumeClaims"), storageDecorator)

	namespaceStorage, namespaceStatusStorage, namespaceFinalizeStorage := namespaceetcd.NewREST(dbClient("namespaces"), storageDecorator)
	m.namespaceRegistry = namespace.NewRegistry(namespaceStorage)

	endpointsStorage := endpointsetcd.NewREST(dbClient("endpoints"), storageDecorator)
	m.endpointRegistry = endpoint.NewRegistry(endpointsStorage)

	nodeStorage, nodeStatusStorage := nodeetcd.NewREST(dbClient("nodes"), storageDecorator, c.KubeletClient, m.proxyTransport)
	m.nodeRegistry = node.NewRegistry(nodeStorage)

	serviceStorage := serviceetcd.NewREST(dbClient("services"), storageDecorator)
	m.serviceRegistry = service.NewRegistry(serviceStorage)

	var serviceClusterIPRegistry service.RangeRegistry
	serviceClusterIPAllocator := ipallocator.NewAllocatorCIDRRange(m.serviceClusterIPRange, func(max int, rangeSpec string) allocator.Interface {
		mem := allocator.NewAllocationMap(max, rangeSpec)
		etcd := etcdallocator.NewEtcd(mem, "/ranges/serviceips", "serviceipallocation", dbClient("services"))
		serviceClusterIPRegistry = etcd
		return etcd
	})
	m.serviceClusterIPAllocator = serviceClusterIPRegistry

	var serviceNodePortRegistry service.RangeRegistry
	serviceNodePortAllocator := portallocator.NewPortAllocatorCustom(m.serviceNodePortRange, func(max int, rangeSpec string) allocator.Interface {
		mem := allocator.NewAllocationMap(max, rangeSpec)
		etcd := etcdallocator.NewEtcd(mem, "/ranges/servicenodeports", "servicenodeportallocation", dbClient("services"))
		serviceNodePortRegistry = etcd
		return etcd
	})
	m.serviceNodePortAllocator = serviceNodePortRegistry

	controllerStorage, controllerStatusStorage := controlleretcd.NewREST(dbClient("replicationControllers"), storageDecorator)

	// TODO: Factor out the core API registration
	m.storage = map[string]rest.Storage{
		"pods":             podStorage.Pod,
		"pods/attach":      podStorage.Attach,
		"pods/status":      podStorage.Status,
		"pods/log":         podStorage.Log,
		"pods/exec":        podStorage.Exec,
		"pods/portforward": podStorage.PortForward,
		"pods/proxy":       podStorage.Proxy,
		"pods/binding":     podStorage.Binding,
		"bindings":         podStorage.Binding,

		"podTemplates": podTemplateStorage,

		"replicationControllers":        controllerStorage,
		"replicationControllers/status": controllerStatusStorage,
		"services":                      service.NewStorage(m.serviceRegistry, m.endpointRegistry, serviceClusterIPAllocator, serviceNodePortAllocator, m.proxyTransport),
		"endpoints":                     endpointsStorage,
		"nodes":                         nodeStorage,
		"nodes/status":                  nodeStatusStorage,
		"events":                        eventStorage,

		"limitRanges":                   limitRangeStorage,
		"resourceQuotas":                resourceQuotaStorage,
		"resourceQuotas/status":         resourceQuotaStatusStorage,
		"namespaces":                    namespaceStorage,
		"namespaces/status":             namespaceStatusStorage,
		"namespaces/finalize":           namespaceFinalizeStorage,
		"secrets":                       secretStorage,
		"serviceAccounts":               serviceAccountStorage,
		"persistentVolumes":             persistentVolumeStorage,
		"persistentVolumes/status":      persistentVolumeStatusStorage,
		"persistentVolumeClaims":        persistentVolumeClaimStorage,
		"persistentVolumeClaims/status": persistentVolumeClaimStatusStorage,

		"componentStatuses": componentstatus.NewStorage(func() map[string]apiserver.Server { return m.getServersToValidate(c) }),
	}

	if m.tunneler != nil {
		m.tunneler.Run(m.getNodeAddresses)
		healthzChecks = append(healthzChecks, healthz.NamedCheck("SSH Tunnel Check", m.IsTunnelSyncHealthy))
		prometheus.NewGaugeFunc(prometheus.GaugeOpts{
			Name: "apiserver_proxy_tunnel_sync_latency_secs",
			Help: "The time since the last successful synchronization of the SSH tunnels for proxy requests.",
		}, func() float64 { return float64(m.tunneler.SecondsSinceSync()) })
	}

	apiVersions := []string{}
	// Install v1 unless disabled.
	if !m.apiGroupVersionOverrides["api/v1"].Disable {
		if err := m.api_v1().InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup API v1: %v", err)
		}
		apiVersions = append(apiVersions, "v1")
	}

	apiserver.InstallSupport(m.muxHelper, m.rootWebService, c.EnableProfiling, healthzChecks...)
	apiserver.AddApiWebService(m.handlerContainer, c.APIPrefix, apiVersions)
	apiserver.InstallServiceErrorHandler(m.handlerContainer, m.newRequestInfoResolver(), apiVersions)

	// allGroups records all supported groups at /apis
	allGroups := []unversioned.APIGroup{}
	// Install extensions unless disabled.
	if !m.apiGroupVersionOverrides["extensions/v1beta1"].Disable {
		m.thirdPartyStorage = c.StorageDestinations.APIGroups["extensions"].Default
		m.thirdPartyResources = map[string]*thirdpartyresourcedataetcd.REST{}

		expVersion := m.experimental(c)

		if err := expVersion.InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup experimental api: %v", err)
		}
		g, err := latest.Group("extensions")
		if err != nil {
			glog.Fatalf("Unable to setup experimental api: %v", err)
		}
		expAPIVersions := []unversioned.GroupVersionForDiscovery{
			{
				GroupVersion: expVersion.GroupVersion.String(),
				Version:      expVersion.GroupVersion.Version,
			},
		}
		storageVersion, found := c.StorageVersions[g.Group]
		if !found {
			glog.Fatalf("Couldn't find storage version of group %v", g.Group)
		}
		group := unversioned.APIGroup{
			Name:             g.Group,
			Versions:         expAPIVersions,
			PreferredVersion: unversioned.GroupVersionForDiscovery{GroupVersion: storageVersion, Version: apiutil.GetVersion(storageVersion)},
		}
		apiserver.AddGroupWebService(m.handlerContainer, c.APIGroupPrefix+"/"+latest.GroupOrDie("extensions").Group, group)
		allGroups = append(allGroups, group)
		apiserver.InstallServiceErrorHandler(m.handlerContainer, m.newRequestInfoResolver(), []string{expVersion.GroupVersion.String()})
	}

	// This should be done after all groups are registered
	// TODO: replace the hardcoded "apis".
	apiserver.AddApisWebService(m.handlerContainer, "/apis", allGroups)

	// Register root handler.
	// We do not register this using restful Webservice since we do not want to surface this in api docs.
	// Allow master to be embedded in contexts which already have something registered at the root
	if c.EnableIndex {
		m.mux.HandleFunc("/", apiserver.IndexHandler(m.handlerContainer, m.muxHelper))
	}

	if c.EnableLogsSupport {
		apiserver.InstallLogsSupport(m.muxHelper)
	}
	if c.EnableUISupport {
		ui.InstallSupport(m.muxHelper, m.enableSwaggerSupport)
	}

	if c.EnableProfiling {
		m.mux.HandleFunc("/debug/pprof/", pprof.Index)
		m.mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
		m.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
	}

	handler := http.Handler(m.mux.(*http.ServeMux))
	insecureHandler := handler

	// TODO: handle CORS and auth using go-restful
	// See github.com/emicklei/go-restful/blob/master/examples/restful-CORS-filter.go, and
	// github.com/emicklei/go-restful/blob/master/examples/restful-basic-authentication.go

	attributeGetter := apiserver.NewRequestAttributeGetter(m.requestContextMapper, m.newRequestInfoResolver())
	handler = apiserver.WithAuthorizationCheck(handler, attributeGetter, m.authorizer)

	// Install Authenticator
	if c.Authenticator != nil {
		authenticatedHandler, err := handlers.NewRequestAuthenticator(m.requestContextMapper, c.Authenticator, handlers.Unauthorized(c.SupportsBasicAuth), handler)
		if err != nil {
			glog.Fatalf("Could not initialize authenticator: %v", err)
		}
		handler = authenticatedHandler
	}

	// Since OPTIONS request cannot carry authn headers (by w3c standards), we are doing CORS check
	// before auth check. Otherwise all the CORS request will be rejected.
	if len(c.CorsAllowedOriginList) > 0 {
		allowedOriginRegexps, err := util.CompileRegexps(c.CorsAllowedOriginList)
		if err != nil {
			glog.Fatalf("Invalid CORS allowed origin, --cors-allowed-origins flag was set to %v - %v", strings.Join(c.CorsAllowedOriginList, ","), err)
		}
		handler = apiserver.CORS(handler, allowedOriginRegexps, nil, nil, "true")
		insecureHandler = apiserver.CORS(insecureHandler, allowedOriginRegexps, nil, nil, "true")
	}

	m.InsecureHandler = insecureHandler

	// Install root web services
	m.handlerContainer.Add(m.rootWebService)

	// TODO: Make this optional?  Consumers of master depend on this currently.
	m.Handler = handler

	if m.enableSwaggerSupport {
		m.InstallSwaggerAPI()
	}

	// After all wrapping is done, put a context filter around both handlers
	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.Handler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.Handler = handler
	}

	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.InsecureHandler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.InsecureHandler = handler
	}

	// TODO: Attempt clean shutdown?
	if m.enableCoreControllers {
		m.NewBootstrapController().Start()
	}
}
Exemplo n.º 8
0
// Run launches the OpenShift master. It takes optional installers that may install additional endpoints into the server.
// All endpoints get configured CORS behavior
// Protected installers' endpoints are protected by API authentication and authorization.
// Unprotected installers' endpoints do not have any additional protection added.
func (c *MasterConfig) Run(protected []APIInstaller, unprotected []APIInstaller) {
	var extra []string

	safe := genericapiserver.NewHandlerContainer(http.NewServeMux(), kapi.Codecs)
	open := genericapiserver.NewHandlerContainer(http.NewServeMux(), kapi.Codecs)

	// enforce authentication on protected endpoints
	protected = append(protected, APIInstallFunc(c.InstallProtectedAPI))
	for _, i := range protected {
		msgs, err := i.InstallAPI(safe)
		if err != nil {
			glog.Fatalf("error installing api %v", err)
		}
		extra = append(extra, msgs...)
	}
	handler := c.versionSkewFilter(safe)
	handler = c.authorizationFilter(handler)
	handler = c.impersonationFilter(handler)
	// audit handler must comes before the impersonationFilter to read the original user
	handler = c.auditHandler(handler)
	handler = authenticationHandlerFilter(handler, c.Authenticator, c.getRequestContextMapper())
	handler = namespacingFilter(handler, c.getRequestContextMapper())
	handler = cacheControlFilter(handler, "no-store") // protected endpoints should not be cached

	// unprotected resources
	unprotected = append(unprotected, APIInstallFunc(c.InstallUnprotectedAPI))
	for _, i := range unprotected {
		msgs, err := i.InstallAPI(open)
		if err != nil {
			glog.Fatalf("error installing api %v", err)
		}
		extra = append(extra, msgs...)
	}

	var kubeAPILevels []string
	if c.Options.KubernetesMasterConfig != nil {
		kubeAPILevels = configapi.GetEnabledAPIVersionsForGroup(*c.Options.KubernetesMasterConfig, kapi.GroupName)
	}

	handler = indexAPIPaths(c.Options.APILevels, kubeAPILevels, handler)

	open.Handle("/", handler)

	// install swagger
	swaggerConfig := swagger.Config{
		WebServicesUrl:   c.Options.MasterPublicURL,
		WebServices:      append(safe.RegisteredWebServices(), open.RegisteredWebServices()...),
		ApiPath:          swaggerAPIPrefix,
		PostBuildHandler: customizeSwaggerDefinition,
	}
	// log nothing from swagger
	swagger.LogInfo = func(format string, v ...interface{}) {}
	swagger.RegisterSwaggerService(swaggerConfig, open)
	extra = append(extra, fmt.Sprintf("Started Swagger Schema API at %%s%s", swaggerAPIPrefix))

	openAPIConfig := openapi.Config{
		SwaggerConfig:  &swaggerConfig,
		IgnorePrefixes: []string{"/swaggerapi"},
		Info: &spec.Info{
			InfoProps: spec.InfoProps{
				Title:   "OpenShift API (with Kubernetes)",
				Version: version.Get().String(),
				License: &spec.License{
					Name: "Apache 2.0 (ASL2.0)",
					URL:  "http://www.apache.org/licenses/LICENSE-2.0",
				},
				Description: heredoc.Doc(`
					OpenShift provides builds, application lifecycle, image content management,
					and administrative policy on top of Kubernetes. The API allows consistent
					management of those objects.

					All API operations are authenticated via an Authorization	bearer token that
					is provided for service accounts as a generated secret (in JWT form) or via
					the native OAuth endpoint located at /oauth/authorize. Core infrastructure
					components may use client certificates that require no authentication.

					All API operations return a 'resourceVersion' string that represents the
					version of the object in the underlying storage. The standard LIST operation
					performs a snapshot read of the underlying objects, returning a resourceVersion
					representing a consistent version of the listed objects. The WATCH operation
					allows all updates to a set of objects after the provided resourceVersion to
					be observed by a client. By listing and beginning a watch from the returned
					resourceVersion, clients may observe a consistent view of the state of one
					or more objects. Note that WATCH always returns the update after the provided
					resourceVersion. Watch may be extended a limited time in the past - using
					etcd 2 the watch window is 1000 events (which on a large cluster may only
					be a few tens of seconds) so clients must explicitly handle the "watch
					to old error" by re-listing.

					Objects are divided into two rough categories - those that have a lifecycle
					and must reflect the state of the cluster, and those that have no state.
					Objects with lifecycle typically have three main sections:

					* 'metadata' common to all objects
					* a 'spec' that represents the desired state
					* a 'status' that represents how much of the desired state is reflected on
					  the cluster at the current time

					Objects that have no state have 'metadata' but may lack a 'spec' or 'status'
					section.

					Objects are divided into those that are namespace scoped (only exist inside
					of a namespace) and those that are cluster scoped (exist outside of
					a namespace). A namespace scoped resource will be deleted when the namespace
					is deleted and cannot be created if the namespace has not yet been created
					or is in the process of deletion. Cluster scoped resources are typically
					only accessible to admins - resources like nodes, persistent volumes, and
					cluster policy.

					All objects have a schema that is a combination of the 'kind' and
					'apiVersion' fields. This schema is additive only for any given version -
					no backwards incompatible changes are allowed without incrementing the
					apiVersion. The server will return and accept a number of standard
					responses that share a common schema - for instance, the common
					error type is 'unversioned.Status' (described below) and will be returned
					on any error from the API server.

					The API is available in multiple serialization formats - the default is
					JSON (Accept: application/json and Content-Type: application/json) but
					clients may also use YAML (application/yaml) or the native Protobuf
					schema (application/vnd.kubernetes.protobuf). Note that the format
					of the WATCH API call is slightly different - for JSON it returns newline
					delimited objects while for Protobuf it returns length-delimited frames
					(4 bytes in network-order) that contain a 'versioned.Watch' Protobuf
					object.

					See the OpenShift documentation at https://docs.openshift.org for more
					information.
				`),
			},
		},
		DefaultResponse: &spec.Response{
			ResponseProps: spec.ResponseProps{
				Description: "Default Response.",
			},
		},
	}
	err := openapi.RegisterOpenAPIService(&openAPIConfig, open)
	if err != nil {
		glog.Fatalf("Failed to generate open api spec: %v", err)
	}
	extra = append(extra, fmt.Sprintf("Started OpenAPI Schema at %%s%s", openapi.OpenAPIServePath))

	handler = open

	// add CORS support
	if origins := c.ensureCORSAllowedOrigins(); len(origins) != 0 {
		handler = apiserver.CORS(handler, origins, nil, nil, "true")
	}

	if c.WebConsoleEnabled() {
		handler = assetServerRedirect(handler, c.Options.AssetConfig.PublicURL)
	}

	// Make the outermost filter the requestContextMapper to ensure all components share the same context
	if contextHandler, err := kapi.NewRequestContextFilter(c.getRequestContextMapper(), handler); err != nil {
		glog.Fatalf("Error setting up request context filter: %v", err)
	} else {
		handler = contextHandler
	}

	longRunningRequestCheck := apiserver.BasicLongRunningRequestCheck(longRunningRE, map[string]string{"watch": "true"})
	// TODO: MaxRequestsInFlight should be subdivided by intent, type of behavior, and speed of
	// execution - updates vs reads, long reads vs short reads, fat reads vs skinny reads.
	if c.Options.ServingInfo.MaxRequestsInFlight > 0 {
		sem := make(chan bool, c.Options.ServingInfo.MaxRequestsInFlight)
		handler = apiserver.MaxInFlightLimit(sem, longRunningRequestCheck, handler)
	}

	c.serve(handler, extra)

	// Attempt to verify the server came up for 20 seconds (100 tries * 100ms, 100ms timeout per try)
	cmdutil.WaitForSuccessfulDial(c.TLS, c.Options.ServingInfo.BindNetwork, c.Options.ServingInfo.BindAddress, 100*time.Millisecond, 100*time.Millisecond, 100)
}
Exemplo n.º 9
0
// init initializes master.
func (m *Master) init(c *Config) {

	if c.ProxyDialer != nil || c.ProxyTLSClientConfig != nil {
		m.proxyTransport = util.SetTransportDefaults(&http.Transport{
			Dial:            c.ProxyDialer,
			TLSClientConfig: c.ProxyTLSClientConfig,
		})
	}

	healthzChecks := []healthz.HealthzChecker{}
	podStorage := podetcd.NewStorage(c.DatabaseStorage, c.EnableWatchCache, c.KubeletClient, m.proxyTransport)

	podTemplateStorage := podtemplateetcd.NewREST(c.DatabaseStorage)

	eventStorage := eventetcd.NewREST(c.DatabaseStorage, uint64(c.EventTTL.Seconds()))
	limitRangeStorage := limitrangeetcd.NewREST(c.DatabaseStorage)

	resourceQuotaStorage, resourceQuotaStatusStorage := resourcequotaetcd.NewREST(c.DatabaseStorage)
	secretStorage := secretetcd.NewREST(c.DatabaseStorage)
	serviceAccountStorage := serviceaccountetcd.NewREST(c.DatabaseStorage)
	persistentVolumeStorage, persistentVolumeStatusStorage := pvetcd.NewREST(c.DatabaseStorage)
	persistentVolumeClaimStorage, persistentVolumeClaimStatusStorage := pvcetcd.NewREST(c.DatabaseStorage)

	namespaceStorage, namespaceStatusStorage, namespaceFinalizeStorage := namespaceetcd.NewREST(c.DatabaseStorage)
	m.namespaceRegistry = namespace.NewRegistry(namespaceStorage)

	endpointsStorage := endpointsetcd.NewREST(c.DatabaseStorage, c.EnableWatchCache)
	m.endpointRegistry = endpoint.NewRegistry(endpointsStorage)

	securityContextConstraintsStorage := sccetcd.NewStorage(c.DatabaseStorage)

	nodeStorage, nodeStatusStorage := nodeetcd.NewREST(c.DatabaseStorage, c.EnableWatchCache, c.KubeletClient, m.proxyTransport)
	m.nodeRegistry = node.NewRegistry(nodeStorage)

	serviceStorage := serviceetcd.NewREST(c.DatabaseStorage)
	m.serviceRegistry = service.NewRegistry(serviceStorage)

	var serviceClusterIPRegistry service.RangeRegistry
	serviceClusterIPAllocator := ipallocator.NewAllocatorCIDRRange(m.serviceClusterIPRange, func(max int, rangeSpec string) allocator.Interface {
		mem := allocator.NewAllocationMap(max, rangeSpec)
		etcd := etcdallocator.NewEtcd(mem, "/ranges/serviceips", "serviceipallocation", c.DatabaseStorage)
		serviceClusterIPRegistry = etcd
		return etcd
	})
	m.serviceClusterIPAllocator = serviceClusterIPRegistry

	var serviceNodePortRegistry service.RangeRegistry
	serviceNodePortAllocator := portallocator.NewPortAllocatorCustom(m.serviceNodePortRange, func(max int, rangeSpec string) allocator.Interface {
		mem := allocator.NewAllocationMap(max, rangeSpec)
		etcd := etcdallocator.NewEtcd(mem, "/ranges/servicenodeports", "servicenodeportallocation", c.DatabaseStorage)
		serviceNodePortRegistry = etcd
		return etcd
	})
	m.serviceNodePortAllocator = serviceNodePortRegistry

	controllerStorage := controlleretcd.NewREST(c.DatabaseStorage)

	// TODO: Factor out the core API registration
	m.storage = map[string]rest.Storage{
		"pods":             podStorage.Pod,
		"pods/attach":      podStorage.Attach,
		"pods/status":      podStorage.Status,
		"pods/log":         podStorage.Log,
		"pods/exec":        podStorage.Exec,
		"pods/portforward": podStorage.PortForward,
		"pods/proxy":       podStorage.Proxy,
		"pods/binding":     podStorage.Binding,
		"bindings":         podStorage.Binding,

		"podTemplates": podTemplateStorage,

		"replicationControllers": controllerStorage,
		"services":               service.NewStorage(m.serviceRegistry, m.endpointRegistry, serviceClusterIPAllocator, serviceNodePortAllocator, m.proxyTransport),
		"endpoints":              endpointsStorage,
		"nodes":                  nodeStorage,
		"nodes/status":           nodeStatusStorage,
		"events":                 eventStorage,

		"limitRanges":                   limitRangeStorage,
		"resourceQuotas":                resourceQuotaStorage,
		"resourceQuotas/status":         resourceQuotaStatusStorage,
		"namespaces":                    namespaceStorage,
		"namespaces/status":             namespaceStatusStorage,
		"namespaces/finalize":           namespaceFinalizeStorage,
		"secrets":                       secretStorage,
		"serviceAccounts":               serviceAccountStorage,
		"securityContextConstraints":    securityContextConstraintsStorage,
		"persistentVolumes":             persistentVolumeStorage,
		"persistentVolumes/status":      persistentVolumeStatusStorage,
		"persistentVolumeClaims":        persistentVolumeClaimStorage,
		"persistentVolumeClaims/status": persistentVolumeClaimStatusStorage,

		"componentStatuses": componentstatus.NewStorage(func() map[string]apiserver.Server { return m.getServersToValidate(c) }),
	}

	if m.tunneler != nil {
		m.tunneler.Run(m.getNodeAddresses)
		healthzChecks = append(healthzChecks, healthz.NamedCheck("SSH Tunnel Check", m.IsTunnelSyncHealthy))
		prometheus.NewGaugeFunc(prometheus.GaugeOpts{
			Name: "apiserver_proxy_tunnel_sync_latency_secs",
			Help: "The time since the last successful synchronization of the SSH tunnels for proxy requests.",
		}, func() float64 { return float64(m.tunneler.SecondsSinceSync()) })
	}

	apiVersions := []string{}
	if m.v1beta3 {
		if err := m.api_v1beta3().InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup API v1beta3: %v", err)
		}
		apiVersions = append(apiVersions, "v1beta3")
	}
	if m.v1 {
		if err := m.api_v1().InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup API v1: %v", err)
		}
		apiVersions = append(apiVersions, "v1")
	}

	apiserver.InstallSupport(m.muxHelper, m.rootWebService, c.EnableProfiling, healthzChecks...)
	apiserver.AddApiWebService(m.handlerContainer, c.APIPrefix, apiVersions)
	defaultVersion := m.defaultAPIGroupVersion()
	requestInfoResolver := &apiserver.APIRequestInfoResolver{APIPrefixes: sets.NewString(strings.TrimPrefix(defaultVersion.Root, "/")), RestMapper: defaultVersion.Mapper}
	apiserver.InstallServiceErrorHandler(m.handlerContainer, requestInfoResolver, apiVersions)

	if m.exp {
		expVersion := m.experimental(c)
		if err := expVersion.InstallREST(m.handlerContainer); err != nil {
			glog.Fatalf("Unable to setup experimental api: %v", err)
		}
		apiserver.AddApiWebService(m.handlerContainer, c.ExpAPIPrefix, []string{expVersion.Version})
		expRequestInfoResolver := &apiserver.APIRequestInfoResolver{APIPrefixes: sets.NewString(strings.TrimPrefix(expVersion.Root, "/")), RestMapper: expVersion.Mapper}
		apiserver.InstallServiceErrorHandler(m.handlerContainer, expRequestInfoResolver, []string{expVersion.Version})
	}

	// Register root handler.
	// We do not register this using restful Webservice since we do not want to surface this in api docs.
	// Allow master to be embedded in contexts which already have something registered at the root
	if c.EnableIndex {
		m.mux.HandleFunc("/", apiserver.IndexHandler(m.handlerContainer, m.muxHelper))
	}

	if c.EnableLogsSupport {
		apiserver.InstallLogsSupport(m.muxHelper)
	}
	/*if c.EnableUISupport {
		ui.InstallSupport(m.mux)
	}*/

	if c.EnableProfiling {
		m.mux.HandleFunc("/debug/pprof/", pprof.Index)
		m.mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
		m.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
	}

	handler := http.Handler(m.mux.(*http.ServeMux))

	// TODO: handle CORS and auth using go-restful
	// See github.com/emicklei/go-restful/blob/master/examples/restful-CORS-filter.go, and
	// github.com/emicklei/go-restful/blob/master/examples/restful-basic-authentication.go

	if len(c.CorsAllowedOriginList) > 0 {
		allowedOriginRegexps, err := util.CompileRegexps(c.CorsAllowedOriginList)
		if err != nil {
			glog.Fatalf("Invalid CORS allowed origin, --cors-allowed-origins flag was set to %v - %v", strings.Join(c.CorsAllowedOriginList, ","), err)
		}
		handler = apiserver.CORS(handler, allowedOriginRegexps, nil, nil, "true")
	}

	m.InsecureHandler = handler

	attributeGetter := apiserver.NewRequestAttributeGetter(m.requestContextMapper, latest.RESTMapper, "api")
	handler = apiserver.WithAuthorizationCheck(handler, attributeGetter, m.authorizer)

	// Install Authenticator
	if c.Authenticator != nil {
		authenticatedHandler, err := handlers.NewRequestAuthenticator(m.requestContextMapper, c.Authenticator, handlers.Unauthorized(c.SupportsBasicAuth), handler)
		if err != nil {
			glog.Fatalf("Could not initialize authenticator: %v", err)
		}
		handler = authenticatedHandler
	}

	// Install root web services
	m.handlerContainer.Add(m.rootWebService)

	// TODO: Make this optional?  Consumers of master depend on this currently.
	m.Handler = handler

	if m.enableSwaggerSupport {
		m.InstallSwaggerAPI()
	}

	// After all wrapping is done, put a context filter around both handlers
	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.Handler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.Handler = handler
	}

	if handler, err := api.NewRequestContextFilter(m.requestContextMapper, m.InsecureHandler); err != nil {
		glog.Fatalf("Could not initialize request context filter: %v", err)
	} else {
		m.InsecureHandler = handler
	}

	// TODO: Attempt clean shutdown?
	if m.enableCoreControllers {
		m.NewBootstrapController().Start()
	}
}
Exemplo n.º 10
0
// New returns a new instance of GenericAPIServer from the given config.
// Certain config fields will be set to a default value if unset,
// including:
//   ServiceClusterIPRange
//   ServiceNodePortRange
//   MasterCount
//   ReadWritePort
//   PublicAddress
// Public fields:
//   Handler -- The returned GenericAPIServer has a field TopHandler which is an
//   http.Handler which handles all the endpoints provided by the GenericAPIServer,
//   including the API, the UI, and miscellaneous debugging endpoints.  All
//   these are subject to authorization and authentication.
//   InsecureHandler -- an http.Handler which handles all the same
//   endpoints as Handler, but no authorization and authentication is done.
// Public methods:
//   HandleWithAuth -- Allows caller to add an http.Handler for an endpoint
//   that uses the same authentication and authorization (if any is configured)
//   as the GenericAPIServer's built-in endpoints.
//   If the caller wants to add additional endpoints not using the GenericAPIServer's
//   auth, then the caller should create a handler for those endpoints, which delegates the
//   any unhandled paths to "Handler".
func (c Config) New() (*GenericAPIServer, error) {
	if c.Serializer == nil {
		return nil, fmt.Errorf("Genericapiserver.New() called with config.Serializer == nil")
	}

	c.setDefaults()

	s := &GenericAPIServer{
		ServiceClusterIPRange: c.ServiceClusterIPRange,
		ServiceNodePortRange:  c.ServiceNodePortRange,
		legacyAPIPrefix:       c.APIPrefix,
		apiPrefix:             c.APIGroupPrefix,
		admissionControl:      c.AdmissionControl,
		requestContextMapper:  c.RequestContextMapper,
		Serializer:            c.Serializer,

		minRequestTimeout:    time.Duration(c.MinRequestTimeout) * time.Second,
		enableSwaggerSupport: c.EnableSwaggerSupport,

		MasterCount:          c.MasterCount,
		ExternalAddress:      c.ExternalHost,
		ClusterIP:            c.PublicAddress,
		PublicReadWritePort:  c.ReadWritePort,
		ServiceReadWriteIP:   c.ServiceReadWriteIP,
		ServiceReadWritePort: c.ServiceReadWritePort,
		ExtraServicePorts:    c.ExtraServicePorts,
		ExtraEndpointPorts:   c.ExtraEndpointPorts,

		KubernetesServiceNodePort: c.KubernetesServiceNodePort,
		apiGroupsForDiscovery:     map[string]unversioned.APIGroup{},

		enableOpenAPISupport:   c.EnableOpenAPISupport,
		openAPIInfo:            c.OpenAPIInfo,
		openAPIDefaultResponse: c.OpenAPIDefaultResponse,
	}

	if c.EnableWatchCache {
		s.storageDecorator = registry.StorageWithCacher
	} else {
		s.storageDecorator = generic.UndecoratedStorage
	}

	if c.RestfulContainer != nil {
		s.HandlerContainer = c.RestfulContainer
	} else {
		s.HandlerContainer = NewHandlerContainer(http.NewServeMux(), c.Serializer)
	}
	// Use CurlyRouter to be able to use regular expressions in paths. Regular expressions are required in paths for example for proxy (where the path is proxy/{kind}/{name}/{*})
	s.HandlerContainer.Router(restful.CurlyRouter{})
	s.Mux = apiserver.NewPathRecorderMux(s.HandlerContainer.ServeMux)

	if c.ProxyDialer != nil || c.ProxyTLSClientConfig != nil {
		s.ProxyTransport = utilnet.SetTransportDefaults(&http.Transport{
			Dial:            c.ProxyDialer,
			TLSClientConfig: c.ProxyTLSClientConfig,
		})
	}

	// Send correct mime type for .svg files.
	// TODO: remove when https://github.com/golang/go/commit/21e47d831bafb59f22b1ea8098f709677ec8ce33
	// makes it into all of our supported go versions (only in v1.7.1 now).
	mime.AddExtensionType(".svg", "image/svg+xml")

	// Register root handler.
	// We do not register this using restful Webservice since we do not want to surface this in api docs.
	// Allow GenericAPIServer to be embedded in contexts which already have something registered at the root
	if c.EnableIndex {
		routes.Index{}.Install(s.Mux, s.HandlerContainer)
	}

	if c.EnableSwaggerSupport && c.EnableSwaggerUI {
		routes.SwaggerUI{}.Install(s.Mux, s.HandlerContainer)
	}
	if c.EnableProfiling {
		routes.Profiling{}.Install(s.Mux, s.HandlerContainer)
	}
	if c.EnableVersion {
		routes.Version{}.Install(s.Mux, s.HandlerContainer)
	}

	handler := http.Handler(s.Mux.BaseMux().(*http.ServeMux))

	// TODO: handle CORS and auth using go-restful
	// See github.com/emicklei/go-restful/blob/master/examples/restful-CORS-filter.go, and
	// github.com/emicklei/go-restful/blob/master/examples/restful-basic-authentication.go

	if len(c.CorsAllowedOriginList) > 0 {
		allowedOriginRegexps, err := util.CompileRegexps(c.CorsAllowedOriginList)
		if err != nil {
			glog.Fatalf("Invalid CORS allowed origin, --cors-allowed-origins flag was set to %v - %v", strings.Join(c.CorsAllowedOriginList, ","), err)
		}
		handler = apiserver.CORS(handler, allowedOriginRegexps, nil, nil, "true")
	}

	s.InsecureHandler = handler

	attributeGetter := apiserver.NewRequestAttributeGetter(c.RequestContextMapper, s.NewRequestInfoResolver())
	handler = apiserver.WithAuthorizationCheck(handler, attributeGetter, c.Authorizer)
	if len(c.AuditLogPath) != 0 {
		// audit handler must comes before the impersonationFilter to read the original user
		writer := &lumberjack.Logger{
			Filename:   c.AuditLogPath,
			MaxAge:     c.AuditLogMaxAge,
			MaxBackups: c.AuditLogMaxBackups,
			MaxSize:    c.AuditLogMaxSize,
		}
		handler = audit.WithAudit(handler, attributeGetter, writer)
		defer writer.Close()
	}
	handler = apiserver.WithImpersonation(handler, c.RequestContextMapper, c.Authorizer)

	// Install Authenticator
	if c.Authenticator != nil {
		authenticatedHandler, err := handlers.NewRequestAuthenticator(c.RequestContextMapper, c.Authenticator, handlers.Unauthorized(c.SupportsBasicAuth), handler)
		if err != nil {
			glog.Fatalf("Could not initialize authenticator: %v", err)
		}
		handler = authenticatedHandler
	}

	// TODO: Make this optional?  Consumers of GenericAPIServer depend on this currently.
	s.Handler = handler

	// After all wrapping is done, put a context filter around both handlers
	var err error
	handler, err = api.NewRequestContextFilter(c.RequestContextMapper, s.Handler)
	if err != nil {
		glog.Fatalf("Could not initialize request context filter for s.Handler: %v", err)
	}
	s.Handler = handler

	handler, err = api.NewRequestContextFilter(c.RequestContextMapper, s.InsecureHandler)
	if err != nil {
		glog.Fatalf("Could not initialize request context filter for s.InsecureHandler: %v", err)
	}
	s.InsecureHandler = handler

	s.installGroupsDiscoveryHandler()

	return s, nil
}
func TestImpersonationFilter(t *testing.T) {
	testCases := []struct {
		name                    string
		user                    user.Info
		impersonationUser       string
		impersonationGroups     []string
		impersonationUserExtras map[string][]string
		expectedUser            user.Info
		expectedCode            int
	}{
		{
			name: "not-impersonating",
			user: &user.DefaultInfo{
				Name: "tester",
			},
			expectedUser: &user.DefaultInfo{
				Name: "tester",
			},
			expectedCode: http.StatusOK,
		},
		{
			name: "impersonating-error",
			user: &user.DefaultInfo{
				Name: "tester",
			},
			impersonationUser: "******",
			expectedUser: &user.DefaultInfo{
				Name: "tester",
			},
			expectedCode: http.StatusForbidden,
		},
		{
			name: "impersonating-group-without-user",
			user: &user.DefaultInfo{
				Name: "tester",
			},
			impersonationGroups: []string{"some-group"},
			expectedUser: &user.DefaultInfo{
				Name: "tester",
			},
			expectedCode: http.StatusForbidden,
		},
		{
			name: "impersonating-extra-without-user",
			user: &user.DefaultInfo{
				Name: "tester",
			},
			impersonationUserExtras: map[string][]string{"scopes": {"scope-a"}},
			expectedUser: &user.DefaultInfo{
				Name: "tester",
			},
			expectedCode: http.StatusForbidden,
		},
		{
			name: "disallowed-group",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel"},
			},
			impersonationUser:   "******",
			impersonationGroups: []string{"some-group"},
			expectedUser: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel"},
			},
			expectedCode: http.StatusForbidden,
		},
		{
			name: "allowed-group",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel", "group-impersonater"},
			},
			impersonationUser:   "******",
			impersonationGroups: []string{"some-group"},
			expectedUser: &user.DefaultInfo{
				Name:   "system:admin",
				Groups: []string{"some-group"},
				Extra:  map[string][]string{},
			},
			expectedCode: http.StatusOK,
		},
		{
			name: "disallowed-userextra-1",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel"},
			},
			impersonationUser:       "******",
			impersonationGroups:     []string{"some-group"},
			impersonationUserExtras: map[string][]string{"scopes": {"scope-a"}},
			expectedUser: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel"},
			},
			expectedCode: http.StatusForbidden,
		},
		{
			name: "disallowed-userextra-2",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel", "extra-setter-project"},
			},
			impersonationUser:       "******",
			impersonationGroups:     []string{"some-group"},
			impersonationUserExtras: map[string][]string{"scopes": {"scope-a"}},
			expectedUser: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel", "extra-setter-project"},
			},
			expectedCode: http.StatusForbidden,
		},
		{
			name: "disallowed-userextra-3",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel", "extra-setter-particular-scopes"},
			},
			impersonationUser:       "******",
			impersonationGroups:     []string{"some-group"},
			impersonationUserExtras: map[string][]string{"scopes": {"scope-a", "scope-b"}},
			expectedUser: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel", "extra-setter-particular-scopes"},
			},
			expectedCode: http.StatusForbidden,
		},
		{
			name: "allowed-userextras",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel", "extra-setter-scopes"},
			},
			impersonationUser:       "******",
			impersonationUserExtras: map[string][]string{"scopes": {"scope-a", "scope-b"}},
			expectedUser: &user.DefaultInfo{
				Name:   "system:admin",
				Groups: []string{},
				Extra:  map[string][]string{"scopes": {"scope-a", "scope-b"}},
			},
			expectedCode: http.StatusOK,
		},
		{
			name: "allowed-users-impersonation",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"regular-impersonater"},
			},
			impersonationUser: "******",
			expectedUser: &user.DefaultInfo{
				Name:   "tester",
				Groups: []string{},
				Extra:  map[string][]string{},
			},
			expectedCode: http.StatusOK,
		},
		{
			name: "disallowed-impersonating",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"sa-impersonater"},
			},
			impersonationUser: "******",
			expectedUser: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"sa-impersonater"},
			},
			expectedCode: http.StatusForbidden,
		},
		{
			name: "allowed-sa-impersonating",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"sa-impersonater"},
				Extra:  map[string][]string{},
			},
			impersonationUser: "******",
			expectedUser: &user.DefaultInfo{
				Name:   "system:serviceaccount:foo:default",
				Groups: []string{"system:serviceaccounts", "system:serviceaccounts:foo"},
				Extra:  map[string][]string{},
			},
			expectedCode: http.StatusOK,
		},
	}

	requestContextMapper = api.NewRequestContextMapper()
	var ctx api.Context
	var actualUser user.Info
	var lock sync.Mutex

	doNothingHandler := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		currentCtx, _ := requestContextMapper.Get(req)
		user, exists := api.UserFrom(currentCtx)
		if !exists {
			actualUser = nil
			return
		}

		actualUser = user
	})
	handler := func(delegate http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
			defer func() {
				if r := recover(); r != nil {
					t.Errorf("Recovered %v", r)
				}
			}()
			lock.Lock()
			defer lock.Unlock()
			requestContextMapper.Update(req, ctx)
			currentCtx, _ := requestContextMapper.Get(req)

			user, exists := api.UserFrom(currentCtx)
			if !exists {
				actualUser = nil
				return
			} else {
				actualUser = user
			}

			delegate.ServeHTTP(w, req)
		})
	}(WithImpersonation(doNothingHandler, requestContextMapper, impersonateAuthorizer{}))
	handler, _ = api.NewRequestContextFilter(requestContextMapper, handler)

	server := httptest.NewServer(handler)
	defer server.Close()

	for _, tc := range testCases {
		func() {
			lock.Lock()
			defer lock.Unlock()
			ctx = api.WithUser(api.NewContext(), tc.user)
		}()

		req, err := http.NewRequest("GET", server.URL, nil)
		if err != nil {
			t.Errorf("%s: unexpected error: %v", tc.name, err)
			continue
		}
		req.Header.Add(authenticationapi.ImpersonateUserHeader, tc.impersonationUser)
		for _, group := range tc.impersonationGroups {
			req.Header.Add(authenticationapi.ImpersonateGroupHeader, group)
		}
		for extraKey, values := range tc.impersonationUserExtras {
			for _, value := range values {
				req.Header.Add(authenticationapi.ImpersonateUserExtraHeaderPrefix+extraKey, value)
			}
		}

		resp, err := http.DefaultClient.Do(req)
		if err != nil {
			t.Errorf("%s: unexpected error: %v", tc.name, err)
			continue
		}
		if resp.StatusCode != tc.expectedCode {
			t.Errorf("%s: expected %v, actual %v", tc.name, tc.expectedCode, resp.StatusCode)
			continue
		}

		if !reflect.DeepEqual(actualUser, tc.expectedUser) {
			t.Errorf("%s: expected %#v, actual %#v", tc.name, tc.expectedUser, actualUser)
			continue
		}
	}
}
Exemplo n.º 12
0
func TestImpersonationFilter(t *testing.T) {
	testCases := []struct {
		name                string
		user                user.Info
		impersonationString string
		expectedUser        user.Info
		expectedCode        int
	}{
		{
			name: "not-impersonating",
			user: &user.DefaultInfo{
				Name: "tester",
			},
			expectedUser: &user.DefaultInfo{
				Name: "tester",
			},
			expectedCode: http.StatusOK,
		},
		{
			name: "impersonating-error",
			user: &user.DefaultInfo{
				Name: "tester",
			},
			impersonationString: "anyone",
			expectedUser: &user.DefaultInfo{
				Name: "tester",
			},
			expectedCode: http.StatusForbidden,
		},
		{
			name: "allowed-systemusers-impersonation",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"wheel"},
			},
			impersonationString: "system:admin",
			expectedUser: &user.DefaultInfo{
				Name:   "system:admin",
				Groups: []string{"system:authenticated"},
			},
			expectedCode: http.StatusOK,
		},
		{
			name: "allowed-users-impersonation",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"regular-impersonater"},
			},
			impersonationString: "tester",
			expectedUser: &user.DefaultInfo{
				Name:   "tester",
				Groups: []string{"system:authenticated", "system:authenticated:oauth"},
			},
			expectedCode: http.StatusOK,
		},
		{
			name: "disallowed-impersonating",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"sa-impersonater"},
			},
			impersonationString: "tester",
			expectedUser: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"sa-impersonater"},
			},
			expectedCode: http.StatusForbidden,
		},
		{
			name: "allowed-sa-impersonating",
			user: &user.DefaultInfo{
				Name:   "dev",
				Groups: []string{"sa-impersonater"},
			},
			impersonationString: "system:serviceaccount:foo:default",
			expectedUser: &user.DefaultInfo{
				Name:   "system:serviceaccount:foo:default",
				Groups: []string{"system:serviceaccounts", "system:serviceaccounts:foo", "system:authenticated"},
			},
			expectedCode: http.StatusOK,
		},
	}

	config := MasterConfig{}
	config.RequestContextMapper = kapi.NewRequestContextMapper()
	config.Authorizer = impersonateAuthorizer{}
	config.GroupCache = usercache.NewGroupCache(&groupCache{})
	var ctx kapi.Context
	var actualUser user.Info
	var lock sync.Mutex

	doNothingHandler := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		currentCtx, _ := config.RequestContextMapper.Get(req)
		user, exists := kapi.UserFrom(currentCtx)
		if !exists {
			actualUser = nil
			return
		}

		actualUser = user
	})
	handler := func(delegate http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
			defer func() {
				if r := recover(); r != nil {
					t.Errorf("Recovered %v", r)
				}
			}()
			lock.Lock()
			defer lock.Unlock()
			config.RequestContextMapper.Update(req, ctx)
			currentCtx, _ := config.RequestContextMapper.Get(req)

			user, exists := kapi.UserFrom(currentCtx)
			if !exists {
				actualUser = nil
				return
			} else {
				actualUser = user
			}

			delegate.ServeHTTP(w, req)
		})
	}(config.impersonationFilter(doNothingHandler))
	handler, _ = kapi.NewRequestContextFilter(config.RequestContextMapper, handler)

	server := httptest.NewServer(handler)
	defer server.Close()

	for _, tc := range testCases {
		func() {
			lock.Lock()
			defer lock.Unlock()
			ctx = kapi.WithUser(kapi.NewContext(), tc.user)
		}()

		req, err := http.NewRequest("GET", server.URL, nil)
		if err != nil {
			t.Errorf("%s: unexpected error: %v", tc.name, err)
			continue
		}
		req.Header.Add(authenticationapi.ImpersonateUserHeader, tc.impersonationString)
		resp, err := http.DefaultClient.Do(req)
		if err != nil {
			t.Errorf("%s: unexpected error: %v", tc.name, err)
			continue
		}
		if resp.StatusCode != tc.expectedCode {
			t.Errorf("%s: expected %v, actual %v", tc.name, tc.expectedCode, resp.StatusCode)
			continue
		}

		if !reflect.DeepEqual(actualUser, tc.expectedUser) {
			t.Errorf("%s: expected %#v, actual %#v", tc.name, tc.expectedUser, actualUser)
			continue
		}
	}
}