// NewForConfig creates a new Clientset for the given config.
func NewForConfig(c *rest.Config) (*Clientset, error) {
configShallowCopy := *c
if configShallowCopy.RateLimiter == nil && configShallowCopy.QPS > 0 {
configShallowCopy.RateLimiter = flowcontrol.NewTokenBucketRateLimiter(configShallowCopy.QPS, configShallowCopy.Burst)
}
var clientset Clientset
var err error
clientset.CoreClient, err = v1core.NewForConfig(&configShallowCopy)
if err != nil {
return nil, err
}
clientset.AuthorizationClient, err = v1beta1authorization.NewForConfig(&configShallowCopy)
if err != nil {
return nil, err
}
clientset.AutoscalingClient, err = v1autoscaling.NewForConfig(&configShallowCopy)
if err != nil {
return nil, err
}
clientset.BatchClient, err = v1batch.NewForConfig(&configShallowCopy)
if err != nil {
return nil, err
}
clientset.ExtensionsClient, err = v1beta1extensions.NewForConfig(&configShallowCopy)
if err != nil {
return nil, err
}
clientset.DiscoveryClient, err = discovery.NewDiscoveryClientForConfig(&configShallowCopy)
if err != nil {
glog.Errorf("failed to create the DiscoveryClient: %v", err)
return nil, err
}
return &clientset, nil
}
// NewRESTClient creates a new RESTClient. This client performs generic REST functions
// such as Get, Put, Post, and Delete on specified paths. Codec controls encoding and
// decoding of responses from the server.
func NewRESTClient(baseURL *url.URL, versionedAPIPath string, config ContentConfig, maxQPS float32, maxBurst int, rateLimiter flowcontrol.RateLimiter, client *http.Client) (*RESTClient, error) {
base := *baseURL
if !strings.HasSuffix(base.Path, "/") {
base.Path += "/"
}
base.RawQuery = ""
base.Fragment = ""
if config.GroupVersion == nil {
config.GroupVersion = &unversioned.GroupVersion{}
}
if len(config.ContentType) == 0 {
config.ContentType = "application/json"
}
serializers, err := createSerializers(config)
if err != nil {
return nil, err
}
var throttle flowcontrol.RateLimiter
if maxQPS > 0 && rateLimiter == nil {
throttle = flowcontrol.NewTokenBucketRateLimiter(maxQPS, maxBurst)
} else if rateLimiter != nil {
throttle = rateLimiter
}
return &RESTClient{
base: &base,
versionedAPIPath: versionedAPIPath,
contentConfig: config,
serializers: *serializers,
createBackoffMgr: readExpBackoffConfig,
Throttle: throttle,
Client: client,
}, nil
}
func main() {
nginx.Start()
cfg, err := rest.InClusterConfig()
if err != nil {
log.Fatalf("Failed to create config: %v", err)
}
kubeClient, err := kubernetes.NewForConfig(cfg)
if err != nil {
log.Fatalf("Failed to create client: %v.", err)
}
rateLimiter := flowcontrol.NewTokenBucketRateLimiter(0.1, 1)
known := &model.RouterConfig{}
// Main loop
for {
rateLimiter.Accept()
routerConfig, err := model.Build(kubeClient)
if err != nil {
log.Printf("Error building model; not modifying certs or configuration: %v.", err)
continue
}
if reflect.DeepEqual(routerConfig, known) {
continue
}
log.Println("INFO: Router configuration has changed in k8s.")
err = nginx.WriteCerts(routerConfig, "/opt/router/ssl")
if err != nil {
log.Printf("Failed to write certs; continuing with existing certs, dhparam, and configuration: %v", err)
continue
}
err = nginx.WriteDHParam(routerConfig, "/opt/router/ssl")
if err != nil {
log.Printf("Failed to write dhparam; continuing with existing dhparam and configuration: %v", err)
continue
}
err = nginx.WriteConfig(routerConfig, "/opt/router/conf/nginx.conf")
if err != nil {
log.Printf("Failed to write new nginx configuration; continuing with existing configuration: %v", err)
continue
}
err = nginx.Reload()
if err != nil {
log.Printf("Failed to reload nginx; continuing with existing configuration: %v", err)
continue
}
known = routerConfig
}
}
