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main.go
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main.go
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/*
Copyright 2020 The Flux authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package main
import (
"fmt"
"os"
flag "github.com/spf13/pflag"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
"k8s.io/utils/pointer"
ctrl "sigs.k8s.io/controller-runtime"
ctrlcache "sigs.k8s.io/controller-runtime/pkg/cache"
ctrlclient "sigs.k8s.io/controller-runtime/pkg/client"
ctrlcfg "sigs.k8s.io/controller-runtime/pkg/config"
metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
imagev1_reflect "github.com/fluxcd/image-reflector-controller/api/v1beta2"
"github.com/fluxcd/pkg/runtime/acl"
"github.com/fluxcd/pkg/runtime/client"
helper "github.com/fluxcd/pkg/runtime/controller"
"github.com/fluxcd/pkg/runtime/events"
feathelper "github.com/fluxcd/pkg/runtime/features"
"github.com/fluxcd/pkg/runtime/leaderelection"
"github.com/fluxcd/pkg/runtime/logger"
"github.com/fluxcd/pkg/runtime/metrics"
"github.com/fluxcd/pkg/runtime/pprof"
"github.com/fluxcd/pkg/runtime/probes"
sourcev1 "github.com/fluxcd/source-controller/api/v1"
"github.com/fluxcd/pkg/git"
imagev1 "github.com/fluxcd/image-automation-controller/api/v1beta2"
"github.com/fluxcd/image-automation-controller/internal/features"
// +kubebuilder:scaffold:imports
"github.com/fluxcd/image-automation-controller/internal/controller"
)
const (
controllerName = "image-automation-controller"
// recoverPanic indicates whether panic caused by reconciles should be recovered.
recoverPanic = true
)
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
func init() {
utilruntime.Must(clientgoscheme.AddToScheme(scheme))
utilruntime.Must(imagev1_reflect.AddToScheme(scheme))
utilruntime.Must(sourcev1.AddToScheme(scheme))
utilruntime.Must(imagev1.AddToScheme(scheme))
// +kubebuilder:scaffold:scheme
}
func main() {
var (
metricsAddr string
eventsAddr string
healthAddr string
clientOptions client.Options
aclOptions acl.Options
logOptions logger.Options
leaderElectionOptions leaderelection.Options
rateLimiterOptions helper.RateLimiterOptions
featureGates feathelper.FeatureGates
watchOptions helper.WatchOptions
concurrent int
)
flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
flag.StringVar(&eventsAddr, "events-addr", "", "The address of the events receiver.")
flag.StringVar(&healthAddr, "health-addr", ":9440", "The address the health endpoint binds to.")
flag.IntVar(&concurrent, "concurrent", 4, "The number of concurrent resource reconciles.")
flag.StringSliceVar(&git.KexAlgos, "ssh-kex-algos", []string{},
"The list of key exchange algorithms to use for ssh connections, arranged from most preferred to the least.")
flag.StringSliceVar(&git.HostKeyAlgos, "ssh-hostkey-algos", []string{},
"The list of hostkey algorithms to use for ssh connections, arranged from most preferred to the least.")
clientOptions.BindFlags(flag.CommandLine)
logOptions.BindFlags(flag.CommandLine)
leaderElectionOptions.BindFlags(flag.CommandLine)
aclOptions.BindFlags(flag.CommandLine)
rateLimiterOptions.BindFlags(flag.CommandLine)
featureGates.BindFlags(flag.CommandLine)
watchOptions.BindFlags(flag.CommandLine)
flag.Parse()
logger.SetLogger(logger.NewLogger(logOptions))
err := featureGates.WithLogger(setupLog).
SupportedFeatures(features.FeatureGates())
if err != nil {
setupLog.Error(err, "unable to load feature gates")
os.Exit(1)
}
watchNamespace := ""
if !watchOptions.AllNamespaces {
watchNamespace = os.Getenv("RUNTIME_NAMESPACE")
}
var disableCacheFor []ctrlclient.Object
shouldCache, err := features.Enabled(features.CacheSecretsAndConfigMaps)
if err != nil {
setupLog.Error(err, "unable to check feature gate "+features.CacheSecretsAndConfigMaps)
os.Exit(1)
}
if !shouldCache {
disableCacheFor = append(disableCacheFor, &corev1.Secret{}, &corev1.ConfigMap{})
}
restConfig := client.GetConfigOrDie(clientOptions)
watchSelector, err := helper.GetWatchSelector(watchOptions)
if err != nil {
setupLog.Error(err, "unable to configure watch label selector for manager")
os.Exit(1)
}
leaderElectionID := fmt.Sprintf("%s-leader-election", controllerName)
if watchOptions.LabelSelector != "" {
leaderElectionID = leaderelection.GenerateID(leaderElectionID, watchOptions.LabelSelector)
}
mgrConfig := ctrl.Options{
Scheme: scheme,
HealthProbeBindAddress: healthAddr,
LeaderElection: leaderElectionOptions.Enable,
LeaderElectionReleaseOnCancel: leaderElectionOptions.ReleaseOnCancel,
LeaseDuration: &leaderElectionOptions.LeaseDuration,
RenewDeadline: &leaderElectionOptions.RenewDeadline,
RetryPeriod: &leaderElectionOptions.RetryPeriod,
LeaderElectionID: leaderElectionID,
Client: ctrlclient.Options{
Cache: &ctrlclient.CacheOptions{
DisableFor: disableCacheFor,
},
},
Cache: ctrlcache.Options{
ByObject: map[ctrlclient.Object]ctrlcache.ByObject{
&imagev1.ImageUpdateAutomation{}: {Label: watchSelector},
},
},
Metrics: metricsserver.Options{
BindAddress: metricsAddr,
ExtraHandlers: pprof.GetHandlers(),
},
Controller: ctrlcfg.Controller{
RecoverPanic: pointer.Bool(true),
MaxConcurrentReconciles: concurrent,
},
}
if watchNamespace != "" {
mgrConfig.Cache.DefaultNamespaces = map[string]ctrlcache.Config{
watchNamespace: ctrlcache.Config{},
}
}
mgr, err := ctrl.NewManager(restConfig, mgrConfig)
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
probes.SetupChecks(mgr, setupLog)
var eventRecorder *events.Recorder
if eventRecorder, err = events.NewRecorder(mgr, ctrl.Log, eventsAddr, controllerName); err != nil {
setupLog.Error(err, "unable to create event recorder")
os.Exit(1)
}
metricsH := helper.NewMetrics(mgr, metrics.MustMakeRecorder(), imagev1.ImageUpdateAutomationFinalizer)
ctx := ctrl.SetupSignalHandler()
if err := (&controller.ImageUpdateAutomationReconciler{
Client: mgr.GetClient(),
EventRecorder: eventRecorder,
Metrics: metricsH,
NoCrossNamespaceRef: aclOptions.NoCrossNamespaceRefs,
ControllerName: controllerName,
}).SetupWithManager(ctx, mgr, controller.ImageUpdateAutomationReconcilerOptions{
RateLimiter: helper.GetRateLimiter(rateLimiterOptions),
}); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "ImageUpdateAutomation")
os.Exit(1)
}
// +kubebuilder:scaffold:builder
setupLog.Info("starting manager")
if err := mgr.Start(ctx); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}