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package controller
import (
"fmt"
"net/http"
"os"
"strconv"
"strings"
"k8s.io/apimachinery/pkg/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/log/zap"
"github.com/go-logr/logr"
accessv1alpha1 "github.com/servicemeshinterface/smi-controller-sdk/apis/access/v1alpha1"
accessv1alpha2 "github.com/servicemeshinterface/smi-controller-sdk/apis/access/v1alpha2"
accessv1alpha3 "github.com/servicemeshinterface/smi-controller-sdk/apis/access/v1alpha3"
splitv1alpha1 "github.com/servicemeshinterface/smi-controller-sdk/apis/split/v1alpha1"
splitv1alpha2 "github.com/servicemeshinterface/smi-controller-sdk/apis/split/v1alpha2"
splitv1alpha3 "github.com/servicemeshinterface/smi-controller-sdk/apis/split/v1alpha3"
splitv1alpha4 "github.com/servicemeshinterface/smi-controller-sdk/apis/split/v1alpha4"
specsv1alpha1 "github.com/servicemeshinterface/smi-controller-sdk/apis/specs/v1alpha1"
specsv1alpha2 "github.com/servicemeshinterface/smi-controller-sdk/apis/specs/v1alpha2"
specsv1alpha3 "github.com/servicemeshinterface/smi-controller-sdk/apis/specs/v1alpha3"
specsv1alpha4 "github.com/servicemeshinterface/smi-controller-sdk/apis/specs/v1alpha4"
accesscontrollers "github.com/servicemeshinterface/smi-controller-sdk/controllers/access"
specscontrollers "github.com/servicemeshinterface/smi-controller-sdk/controllers/specs"
splitcontrollers "github.com/servicemeshinterface/smi-controller-sdk/controllers/split"
)
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
stopChan chan (struct{})
)
// Config holds the configuration options for the controller
type Config struct {
HealthProbeBindAddress string
MetricsBindAddress string
WebhookBindAddress string
WebhooksEnabled bool
LeaderElectionID string
LeaderElectionEnabled bool
Logger logr.Logger
}
// DefaultConfig returns an instance of Config with the default settings
func DefaultConfig() Config {
return Config{
HealthProbeBindAddress: ":9444",
WebhookBindAddress: ":9443",
MetricsBindAddress: ":9102",
LeaderElectionID: "4ede023f.smi-spec.io",
WebhooksEnabled: true,
Logger: zap.New(zap.UseDevMode(true)),
}
}
func init() {
_ = clientgoscheme.AddToScheme(scheme)
_ = accessv1alpha1.AddToScheme(scheme)
_ = accessv1alpha2.AddToScheme(scheme)
_ = accessv1alpha3.AddToScheme(scheme)
_ = splitv1alpha1.AddToScheme(scheme)
_ = splitv1alpha2.AddToScheme(scheme)
_ = splitv1alpha3.AddToScheme(scheme)
_ = splitv1alpha4.AddToScheme(scheme)
_ = specsv1alpha1.AddToScheme(scheme)
_ = specsv1alpha2.AddToScheme(scheme)
_ = specsv1alpha3.AddToScheme(scheme)
_ = specsv1alpha4.AddToScheme(scheme)
// +kubebuilder:scaffold:scheme
}
// Start the controller
func Start(config Config) {
webhookAddress := strings.Split(config.WebhookBindAddress, ":")[0]
webhookPortString := strings.Split(config.WebhookBindAddress, ":")[1]
webhookPort, _ := strconv.Atoi(webhookPortString)
if webhookAddress == "" {
webhookAddress = "0.0.0.0"
}
ctrl.SetLogger(config.Logger)
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme,
MetricsBindAddress: config.MetricsBindAddress,
HealthProbeBindAddress: config.HealthProbeBindAddress,
Port: webhookPort,
Host: webhookAddress,
LeaderElection: config.LeaderElectionEnabled,
LeaderElectionID: config.LeaderElectionID,
})
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
// add the health checks
mgr.AddHealthzCheck("healthz", func(r *http.Request) error {
setupLog.Info("Health check called")
// TODO expose this functionality to the consumer of the SDK
return nil
})
// add the readyness checks
mgr.AddReadyzCheck("readyz", func(r *http.Request) error {
setupLog.Info("Ready check called")
// TODO expose this functionality to the consumer of the SDK
return nil
})
// Traffic Access Controllers
if err = (&accesscontrollers.TrafficTargetReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "TrafficTarget")
os.Exit(1)
}
// Traffic Split Controllers
if err = (&splitcontrollers.TrafficSplitReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "TrafficSplit")
os.Exit(1)
}
// Traffic Spec Controllers
if err = (&specscontrollers.HTTPRouteGroupReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "HTTPRouteGroup")
os.Exit(1)
}
if err = (&specscontrollers.TCPRouteReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "TCPRoute")
os.Exit(1)
}
if err = (&specscontrollers.UDPRouteReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "UDPRoute")
os.Exit(1)
}
if config.WebhooksEnabled {
// Access conversion webhooks
if err = (&accessv1alpha1.TrafficTarget{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "accessv1alpha1.TrafficTarget")
os.Exit(1)
}
if err = (&accessv1alpha2.TrafficTarget{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "accessv1alpha1.TrafficTarget")
os.Exit(1)
}
// Splits conversion webhooks
if err = (&splitv1alpha1.TrafficSplit{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "accessv1alpha1.TrafficSplit")
os.Exit(1)
}
if err = (&splitv1alpha2.TrafficSplit{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "accessv1alpha2.TrafficSplit")
os.Exit(1)
}
if err = (&splitv1alpha3.TrafficSplit{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "accessv1alpha3.TrafficSplit")
os.Exit(1)
}
// Specs conversion webhooks
if err = (&specsv1alpha1.HTTPRouteGroup{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "accessv1alpha1.HTTPRouteGroup")
os.Exit(1)
}
if err = (&specsv1alpha2.HTTPRouteGroup{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "accessv1alpha2.HTTPRouteGroup")
os.Exit(1)
}
if err = (&specsv1alpha3.HTTPRouteGroup{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "accessv1alpha3.HTTPRouteGroup")
os.Exit(1)
}
if err = (&specsv1alpha1.TCPRoute{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "specsv1alpha1.TCPRoute")
os.Exit(1)
}
if err = (&specsv1alpha2.TCPRoute{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "specsv1alpha2.TCPRoute")
os.Exit(1)
}
if err = (&specsv1alpha3.TCPRoute{}).SetupWebhookWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create webhook", "webhook", "specsv1alpha3.TCPRoute")
os.Exit(1)
}
}
// +kubebuilder:scaffold:builder
stopChan := ctrl.SetupSignalHandler()
setupLog.Info("starting manager")
if err := mgr.Start(stopChan); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}
// Stop the controller and shutdown gracefully
// TODO this seems to block on the channe, investigate
func Stop() {
fmt.Println("stopping")
stopChan <- struct{}{}
fmt.Println("stopped")
}