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start.go
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start.go
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package server
import (
"fmt"
"io"
"net"
"github.com/spf13/cobra"
"k8s.io/apimachinery/pkg/apimachinery/announced"
"k8s.io/apimachinery/pkg/apimachinery/registered"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apiserver/pkg/authentication/authenticatorfactory"
genericapiserver "k8s.io/apiserver/pkg/server"
genericoptions "k8s.io/apiserver/pkg/server/options"
authenticationclient "k8s.io/client-go/kubernetes/typed/authentication/v1beta1"
"k8s.io/client-go/rest"
"k8s.io/kubernetes/pkg/kubectl/cmd/util"
"io/ioutil"
"github.com/openshift/origin/pkg/template/servicebroker/apis/config"
configinstall "github.com/openshift/origin/pkg/template/servicebroker/apis/config/install"
"github.com/openshift/origin/pkg/templateservicebroker/openservicebroker/server"
)
type TemplateServiceBrokerServerOptions struct {
// we don't have any storage, so we shouldn't use the recommended options
SecureServing *genericoptions.SecureServingOptions
Authentication *genericoptions.DelegatingAuthenticationOptions
Authorization *genericoptions.DelegatingAuthorizationOptions
Audit *genericoptions.AuditOptions
Features *genericoptions.FeatureOptions
StdOut io.Writer
StdErr io.Writer
TSBConfig *config.TemplateServiceBrokerConfig
}
func NewTemplateServiceBrokerServerOptions(out, errOut io.Writer) *TemplateServiceBrokerServerOptions {
o := &TemplateServiceBrokerServerOptions{
SecureServing: genericoptions.NewSecureServingOptions(),
Authentication: genericoptions.NewDelegatingAuthenticationOptions(),
Authorization: genericoptions.NewDelegatingAuthorizationOptions(),
Audit: genericoptions.NewAuditOptions(),
Features: genericoptions.NewFeatureOptions(),
StdOut: out,
StdErr: errOut,
}
return o
}
func NewCommandStartTemplateServiceBrokerServer(out, errOut io.Writer, stopCh <-chan struct{}) *cobra.Command {
o := NewTemplateServiceBrokerServerOptions(out, errOut)
cmd := &cobra.Command{
Use: "template-service-broker",
Short: "Launch a template service broker server",
Long: "Launch a template service broker server",
RunE: func(c *cobra.Command, args []string) error {
if err := o.Complete(c); err != nil {
return err
}
if err := o.Validate(args); err != nil {
return err
}
if err := o.RunTemplateServiceBrokerServer(stopCh); err != nil {
return err
}
return nil
},
}
flags := cmd.Flags()
o.SecureServing.AddFlags(flags)
o.Authentication.AddFlags(flags)
o.Authorization.AddFlags(flags)
o.Audit.AddFlags(flags)
o.Features.AddFlags(flags)
flags.String("config", "", "filename containing the TemplateServiceBrokerConfig")
return cmd
}
func (o TemplateServiceBrokerServerOptions) Validate(args []string) error {
if o.TSBConfig == nil {
return fmt.Errorf("missing config: specify --config")
}
if len(o.TSBConfig.TemplateNamespaces) == 0 {
return fmt.Errorf("templateNamespaces are required")
}
return nil
}
func (o *TemplateServiceBrokerServerOptions) Complete(cmd *cobra.Command) error {
configFile := util.GetFlagString(cmd, "config")
if len(configFile) > 0 {
content, err := ioutil.ReadFile(configFile)
if err != nil {
return err
}
configObj, err := runtime.Decode(configCodecs.UniversalDecoder(), content)
if err != nil {
return err
}
config, ok := configObj.(*config.TemplateServiceBrokerConfig)
if !ok {
return fmt.Errorf("unexpected type: %T", configObj)
}
o.TSBConfig = config
}
return nil
}
func (o TemplateServiceBrokerServerOptions) Config() (*server.TemplateServiceBrokerConfig, error) {
// TODO have a "real" external address
if err := o.SecureServing.MaybeDefaultWithSelfSignedCerts("localhost", nil, []net.IP{net.ParseIP("127.0.0.1")}); err != nil {
return nil, fmt.Errorf("error creating self-signed certificates: %v", err)
}
serverConfig := genericapiserver.NewConfig(server.Codecs)
if err := o.SecureServing.ApplyTo(serverConfig); err != nil {
return nil, err
}
// TODO restore this after https://github.com/openshift/openshift-ansible/issues/5056 is fixed
//if err := o.Authentication.ApplyTo(serverConfig); err != nil {
// return nil, err
//}
// the TSB server *can* limp along without terminating client certs or front proxy authn. Do that for now
// this wiring is a bit tricky.
clientConfig, err := rest.InClusterConfig()
if err != nil {
return nil, err
}
client, err := authenticationclient.NewForConfig(clientConfig)
if err != nil {
return nil, err
}
authenticationConfig := authenticatorfactory.DelegatingAuthenticatorConfig{
Anonymous: true,
TokenAccessReviewClient: client.TokenReviews(),
CacheTTL: o.Authentication.CacheTTL,
}
authenticator, _, err := authenticationConfig.New()
if err != nil {
return nil, err
}
serverConfig.Authenticator = authenticator
if err := o.Authorization.ApplyTo(serverConfig); err != nil {
return nil, err
}
if err := o.Audit.ApplyTo(serverConfig); err != nil {
return nil, err
}
if err := o.Features.ApplyTo(serverConfig); err != nil {
return nil, err
}
config := &server.TemplateServiceBrokerConfig{
GenericConfig: serverConfig,
TemplateNamespaces: o.TSBConfig.TemplateNamespaces,
// TODO add the code to set up the client and informers that you need here
}
return config, nil
}
func (o TemplateServiceBrokerServerOptions) RunTemplateServiceBrokerServer(stopCh <-chan struct{}) error {
config, err := o.Config()
if err != nil {
return err
}
server, err := config.Complete().New(genericapiserver.EmptyDelegate)
if err != nil {
return err
}
return server.GenericAPIServer.PrepareRun().Run(stopCh)
}
// these are used to set up for reading the config
var (
groupFactoryRegistry = make(announced.APIGroupFactoryRegistry)
registry = registered.NewOrDie("")
configScheme = runtime.NewScheme()
configCodecs = serializer.NewCodecFactory(configScheme)
)
func init() {
configinstall.Install(groupFactoryRegistry, registry, configScheme)
}