mirror of
https://github.com/fluxcd/flagger.git
synced 2026-03-02 09:40:52 +00:00
119 lines
3.3 KiB
Go
119 lines
3.3 KiB
Go
package main
|
|
|
|
import (
|
|
"flag"
|
|
"log"
|
|
"time"
|
|
|
|
sharedclientset "github.com/knative/pkg/client/clientset/versioned"
|
|
"github.com/knative/pkg/signals"
|
|
clientset "github.com/stefanprodan/steerer/pkg/client/clientset/versioned"
|
|
informers "github.com/stefanprodan/steerer/pkg/client/informers/externalversions"
|
|
"github.com/stefanprodan/steerer/pkg/controller"
|
|
"github.com/stefanprodan/steerer/pkg/logging"
|
|
"github.com/stefanprodan/steerer/pkg/server"
|
|
"github.com/stefanprodan/steerer/pkg/version"
|
|
"go.uber.org/zap"
|
|
"k8s.io/client-go/kubernetes"
|
|
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
|
|
"k8s.io/client-go/tools/cache"
|
|
"k8s.io/client-go/tools/clientcmd"
|
|
)
|
|
|
|
var (
|
|
masterURL string
|
|
kubeconfig string
|
|
metricServer string
|
|
rolloutWindow time.Duration
|
|
logLevel string
|
|
port string
|
|
)
|
|
|
|
func init() {
|
|
flag.StringVar(&kubeconfig, "kubeconfig", "", "Path to a kubeconfig. Only required if out-of-cluster.")
|
|
flag.StringVar(&masterURL, "master", "", "The address of the Kubernetes API server. Overrides any value in kubeconfig. Only required if out-of-cluster.")
|
|
flag.StringVar(&metricServer, "prometheus", "http://prometheus:9090", "Prometheus URL")
|
|
flag.DurationVar(&rolloutWindow, "window", 10*time.Second, "wait interval between deployment rollouts")
|
|
flag.StringVar(&logLevel, "level", "debug", "Log level can be: debug, info, warning, error.")
|
|
flag.StringVar(&port, "port", "8080", "Port to listen on.")
|
|
}
|
|
|
|
func main() {
|
|
flag.Parse()
|
|
|
|
logger, err := logging.NewLogger(logLevel)
|
|
if err != nil {
|
|
log.Fatalf("Error creating logger: %v", err)
|
|
}
|
|
defer logger.Sync()
|
|
|
|
stopCh := signals.SetupSignalHandler()
|
|
|
|
cfg, err := clientcmd.BuildConfigFromFlags(masterURL, kubeconfig)
|
|
if err != nil {
|
|
logger.Fatalf("Error building kubeconfig: %v", err)
|
|
}
|
|
|
|
kubeClient, err := kubernetes.NewForConfig(cfg)
|
|
if err != nil {
|
|
logger.Fatalf("Error building kubernetes clientset: %v", err)
|
|
}
|
|
|
|
sharedClient, err := sharedclientset.NewForConfig(cfg)
|
|
if err != nil {
|
|
logger.Fatalf("Error building shared clientset: %v", err)
|
|
}
|
|
|
|
rolloutClient, err := clientset.NewForConfig(cfg)
|
|
if err != nil {
|
|
logger.Fatalf("Error building example clientset: %s", err.Error())
|
|
}
|
|
|
|
rolloutInformerFactory := informers.NewSharedInformerFactory(rolloutClient, time.Second*30)
|
|
rolloutInformer := rolloutInformerFactory.Apps().V1beta1().Rollouts()
|
|
|
|
ver, err := kubeClient.Discovery().ServerVersion()
|
|
if err != nil {
|
|
logger.Fatalf("Error calling Kubernetes API: %v", err)
|
|
}
|
|
|
|
logger.Infow("Starting steerer",
|
|
zap.String("version", version.VERSION),
|
|
zap.String("revision", version.REVISION),
|
|
zap.String("metrics provider", metricServer),
|
|
zap.Any("kubernetes version", ver))
|
|
|
|
// start HTTP server
|
|
go server.ListenAndServe(port, 3*time.Second, logger, stopCh)
|
|
|
|
c := controller.NewController(
|
|
kubeClient,
|
|
sharedClient,
|
|
rolloutClient,
|
|
rolloutInformer,
|
|
rolloutWindow,
|
|
metricServer,
|
|
logger,
|
|
)
|
|
|
|
rolloutInformerFactory.Start(stopCh)
|
|
|
|
logger.Info("Waiting for informer caches to sync")
|
|
for _, synced := range []cache.InformerSynced{
|
|
rolloutInformer.Informer().HasSynced,
|
|
} {
|
|
if ok := cache.WaitForCacheSync(stopCh, synced); !ok {
|
|
logger.Fatalf("Failed to wait for cache sync")
|
|
}
|
|
}
|
|
|
|
// start controller
|
|
go func(ctrl *controller.Controller) {
|
|
if err := ctrl.Run(2, stopCh); err != nil {
|
|
logger.Fatalf("Error running controller: %v", err)
|
|
}
|
|
}(c)
|
|
|
|
<-stopCh
|
|
}
|