// Clients returns an OpenShift and Kubernetes client with the credentials of the named service account
// TODO: change return types to client.Interface/kclient.Interface to allow auto-reloading credentials
func Clients(config kclient.Config, tokenRetriever TokenRetriever, namespace, name string) (*client.Client, *kclient.Client, error) {
// Clear existing auth info
config.Username = ""
config.Password = ""
config.CertFile = ""
config.CertData = []byte{}
config.KeyFile = ""
config.KeyData = []byte{}
// For now, just initialize the token once
// TODO: refetch the token if the client encounters 401 errors
token, err := tokenRetriever.GetToken(namespace, name)
if err != nil {
return nil, nil, err
}
config.BearerToken = token
c, err := client.New(&config)
if err != nil {
return nil, nil, err
}
kc, err := kclient.New(&config)
if err != nil {
return nil, nil, err
}
return c, kc, nil
}
func validateToken(token string, clientConfig *kclient.Config) {
if len(token) == 0 {
fmt.Println("You must provide a token to validate")
return
}
fmt.Printf("Using token: %v\n", token)
clientConfig.BearerToken = token
osClient, err := osclient.New(clientConfig)
if err != nil {
fmt.Printf("Error building osClient: %v\n", err)
return
}
jsonResponse, _, err := getTokenInfo(token, osClient)
if err != nil {
fmt.Printf("%v\n", err)
fmt.Println("Try visiting " + getRequestTokenURL(clientConfig) + " for a new token.")
return
}
fmt.Printf("%v\n", string(jsonResponse))
whoami, err := osClient.Users().Get("~")
if err != nil {
fmt.Printf("Error making whoami request: %v\n", err)
return
}
whoamiJSON, err := json.Marshal(whoami)
if err != nil {
fmt.Printf("Error interpretting whoami response: %v\n", err)
return
}
fmt.Printf("%v\n", string(whoamiJSON))
}
// AnonymousClientConfig returns a copy of the given config with all user credentials (cert/key, bearer token, and username/password) removed
func AnonymousClientConfig(config kclient.Config) kclient.Config {
config.BearerToken = ""
config.CertData = nil
config.CertFile = ""
config.KeyData = nil
config.KeyFile = ""
config.Username = ""
config.Password = ""
return config
}
// MergeWithConfig returns a copy of a client.Config with values from the Info.
// The fields of client.Config with a corresponding field in the Info are set
// with the value from the Info.
func (info Info) MergeWithConfig(c client.Config) (client.Config, error) {
var config client.Config = c
config.Username = info.User
config.Password = info.Password
config.CAFile = info.CAFile
config.CertFile = info.CertFile
config.KeyFile = info.KeyFile
config.BearerToken = info.BearerToken
if info.Insecure != nil {
config.Insecure = *info.Insecure
}
return config, nil
}
// newAPIClient creates a new client to speak to the kubernetes api service
func (r *kubeAPIImpl) newAPIClient() (*unversioned.Client, error) {
// step: create the configuration
cfg := unversioned.Config{
Host: getURL(),
Insecure: config.HTTPInsecure,
Version: config.APIVersion,
}
// check: ensure the token file exists
if config.TokenFile != "" {
if _, err := os.Stat(config.TokenFile); os.IsNotExist(err) {
return nil, fmt.Errorf("the token file: %s does not exist", config.TokenFile)
}
content, err := ioutil.ReadFile(config.TokenFile)
if err != nil {
return nil, fmt.Errorf("unable to read the token file: %s, error: %s", config.TokenFile, err)
}
config.Token = string(content)
}
// check: are we using a user token to authenticate?
if config.Token != "" {
cfg.BearerToken = config.Token
}
// check: are we using a cert to authenticate
if config.CaCertFile != "" {
cfg.Insecure = false
cfg.TLSClientConfig = unversioned.TLSClientConfig{
CAFile: config.CaCertFile,
}
}
// step: initialize the client
kube, err := unversioned.New(&cfg)
if err != nil {
return nil, fmt.Errorf("unable to create a kubernetes api client, reason: %s", err)
}
return kube, nil
}
func CreateKubeSources(uri *url.URL, c cache.Cache) ([]api.Source, error) {
var (
kubeConfig *kube_client.Config
err error
)
opts := uri.Query()
configOverrides, err := getConfigOverrides(uri)
if err != nil {
return nil, err
}
inClusterConfig := defaultInClusterConfig
if len(opts["inClusterConfig"]) > 0 {
inClusterConfig, err = strconv.ParseBool(opts["inClusterConfig"][0])
if err != nil {
return nil, err
}
}
if inClusterConfig {
kubeConfig, err = kube_client.InClusterConfig()
if err != nil {
return nil, err
}
if configOverrides.ClusterInfo.Server != "" {
kubeConfig.Host = configOverrides.ClusterInfo.Server
}
kubeConfig.Version = configOverrides.ClusterInfo.APIVersion
} else {
authFile := ""
if len(opts["auth"]) > 0 {
authFile = opts["auth"][0]
}
if authFile != "" {
if kubeConfig, err = kubeClientCmd.NewNonInteractiveDeferredLoadingClientConfig(
&kubeClientCmd.ClientConfigLoadingRules{ExplicitPath: authFile},
configOverrides).ClientConfig(); err != nil {
return nil, err
}
} else {
kubeConfig = &kube_client.Config{
Host: configOverrides.ClusterInfo.Server,
Version: configOverrides.ClusterInfo.APIVersion,
Insecure: configOverrides.ClusterInfo.InsecureSkipTLSVerify,
}
}
}
if len(kubeConfig.Host) == 0 {
return nil, fmt.Errorf("invalid kubernetes master url specified")
}
if len(kubeConfig.Version) == 0 {
return nil, fmt.Errorf("invalid kubernetes API version specified")
}
useServiceAccount := defaultUseServiceAccount
if len(opts["useServiceAccount"]) >= 1 {
useServiceAccount, err = strconv.ParseBool(opts["useServiceAccount"][0])
if err != nil {
return nil, err
}
}
if useServiceAccount {
// If a readable service account token exists, then use it
if contents, err := ioutil.ReadFile(defaultServiceAccountFile); err == nil {
kubeConfig.BearerToken = string(contents)
}
}
kubeClient := kube_client.NewOrDie(kubeConfig)
nodesApi, err := nodes.NewKubeNodes(kubeClient)
if err != nil {
return nil, err
}
kubeletPort := defaultKubeletPort
if len(opts["kubeletPort"]) >= 1 {
kubeletPort, err = strconv.Atoi(opts["kubeletPort"][0])
if err != nil {
return nil, err
}
}
kubeletHttps := defaultKubeletHttps
if len(opts["kubeletHttps"]) >= 1 {
kubeletHttps, err = strconv.ParseBool(opts["kubeletHttps"][0])
if err != nil {
return nil, err
}
}
glog.Infof("Using Kubernetes client with master %q and version %q\n", kubeConfig.Host, kubeConfig.Version)
glog.Infof("Using kubelet port %d", kubeletPort)
kubeletConfig := &kube_client.KubeletConfig{
Port: uint(kubeletPort),
EnableHttps: kubeletHttps,
TLSClientConfig: kubeConfig.TLSClientConfig,
}
kubeletApi, err := datasource.NewKubelet(kubeletConfig)
if err != nil {
return nil, err
}
kubePodsSource := NewKubePodMetrics(kubeletPort, kubeletApi, nodesApi, newPodsApi(kubeClient))
kubeNodeSource := NewKubeNodeMetrics(kubeletPort, kubeletApi, nodesApi)
kubeEventsSource := NewKubeEvents(kubeClient, c)
return []api.Source{kubePodsSource, kubeNodeSource, kubeEventsSource}, nil
}