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main.go
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main.go
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/*
Copyright 2020 The Flux CD contributors.
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 (
"flag"
"os"
"time"
"k8s.io/apimachinery/pkg/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
"sigs.k8s.io/cli-utils/pkg/kstatus/polling"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/healthz"
crtlmetrics "sigs.k8s.io/controller-runtime/pkg/metrics"
kustomizev1 "github.com/fluxcd/kustomize-controller/api/v1beta1"
"github.com/fluxcd/kustomize-controller/controllers"
"github.com/fluxcd/pkg/runtime/events"
"github.com/fluxcd/pkg/runtime/logger"
"github.com/fluxcd/pkg/runtime/metrics"
sourcev1 "github.com/fluxcd/source-controller/api/v1beta1"
// +kubebuilder:scaffold:imports
)
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
func init() {
_ = clientgoscheme.AddToScheme(scheme)
_ = sourcev1.AddToScheme(scheme)
_ = kustomizev1.AddToScheme(scheme)
// +kubebuilder:scaffold:scheme
}
func main() {
var (
metricsAddr string
eventsAddr string
healthAddr string
enableLeaderElection bool
concurrent int
requeueDependency time.Duration
logLevel string
logJSON bool
watchAllNamespaces bool
)
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.BoolVar(&enableLeaderElection, "enable-leader-election", false,
"Enable leader election for controller manager. "+
"Enabling this will ensure there is only one active controller manager.")
flag.IntVar(&concurrent, "concurrent", 4, "The number of concurrent kustomize reconciles.")
flag.DurationVar(&requeueDependency, "requeue-dependency", 30*time.Second, "The interval at which failing dependencies are reevaluated.")
flag.StringVar(&logLevel, "log-level", "info", "Set logging level. Can be debug, info or error.")
flag.BoolVar(&logJSON, "log-json", false, "Set logging to JSON format.")
flag.BoolVar(&watchAllNamespaces, "watch-all-namespaces", true,
"Watch for custom resources in all namespaces, if set to false it will only watch the runtime namespace.")
flag.Parse()
ctrl.SetLogger(logger.NewLogger(logLevel, logJSON))
var eventRecorder *events.Recorder
if eventsAddr != "" {
if er, err := events.NewRecorder(eventsAddr, "kustomize-controller"); err != nil {
setupLog.Error(err, "unable to create event recorder")
os.Exit(1)
} else {
eventRecorder = er
}
}
metricsRecorder := metrics.NewRecorder()
crtlmetrics.Registry.MustRegister(metricsRecorder.Collectors()...)
watchNamespace := ""
if !watchAllNamespaces {
watchNamespace = os.Getenv("RUNTIME_NAMESPACE")
}
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme,
MetricsBindAddress: metricsAddr,
HealthProbeBindAddress: healthAddr,
Port: 9443,
LeaderElection: enableLeaderElection,
LeaderElectionID: "7593cc5d.fluxcd.io",
Namespace: watchNamespace,
Logger: ctrl.Log,
})
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
setupChecks(mgr)
if err = (&controllers.GitRepositoryWatcher{
Client: mgr.GetClient(),
Log: ctrl.Log.WithName("controllers").WithName(sourcev1.GitRepositoryKind),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", sourcev1.GitRepositoryKind)
os.Exit(1)
}
if err = (&controllers.BucketWatcher{
Client: mgr.GetClient(),
Log: ctrl.Log.WithName("controllers").WithName(sourcev1.BucketKind),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", sourcev1.BucketKind)
os.Exit(1)
}
if err = (&controllers.KustomizationReconciler{
Client: mgr.GetClient(),
Log: ctrl.Log.WithName("controllers").WithName(kustomizev1.KustomizationKind),
Scheme: mgr.GetScheme(),
EventRecorder: mgr.GetEventRecorderFor("kustomize-controller"),
ExternalEventRecorder: eventRecorder,
MetricsRecorder: metricsRecorder,
StatusPoller: polling.NewStatusPoller(mgr.GetClient(), mgr.GetRESTMapper()),
}).SetupWithManager(mgr, controllers.KustomizationReconcilerOptions{
MaxConcurrentReconciles: concurrent,
DependencyRequeueInterval: requeueDependency,
}); err != nil {
setupLog.Error(err, "unable to create controller", "controller", kustomizev1.KustomizationKind)
os.Exit(1)
}
// +kubebuilder:scaffold:builder
setupLog.Info("starting manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}
func setupChecks(mgr ctrl.Manager) {
if err := mgr.AddReadyzCheck("ping", healthz.Ping); err != nil {
setupLog.Error(err, "unable to create ready check")
os.Exit(1)
}
if err := mgr.AddHealthzCheck("ping", healthz.Ping); err != nil {
setupLog.Error(err, "unable to create health check")
os.Exit(1)
}
}