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main.go
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main.go
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/*
Copyright 2022.
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 (
"context"
"errors"
"flag"
"fmt"
"os"
"runtime"
"strings"
"time"
"sigs.k8s.io/controller-runtime/pkg/webhook"
// Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.)
// to ensure that exec-entrypoint and run can make use of them.
zaplogfmt "github.com/sykesm/zap-logfmt"
uzap "go.uber.org/zap"
"go.uber.org/zap/zapcore"
_ "k8s.io/client-go/plugin/pkg/client/auth"
metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
apiruntime "k8s.io/apimachinery/pkg/runtime"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/cache"
"sigs.k8s.io/controller-runtime/pkg/client/config"
"sigs.k8s.io/controller-runtime/pkg/healthz"
logf "sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/log/zap"
"sigs.k8s.io/controller-runtime/pkg/manager"
"github.com/operator-framework/operator-lib/leader"
routev1 "github.com/openshift/api/route/v1"
aaov1alpha1 "github.com/openshift/aws-account-operator/api/v1alpha1"
hivev1 "github.com/openshift/hive/apis/hive/v1"
"github.com/openshift/operator-custom-metrics/pkg/metrics"
certmanv1alpha1 "github.com/openshift/certman-operator/api/v1alpha1"
operatorconfig "github.com/openshift/certman-operator/config"
"github.com/openshift/certman-operator/controllers/certificaterequest"
"github.com/openshift/certman-operator/controllers/clusterdeployment"
cClient "github.com/openshift/certman-operator/pkg/clients"
"github.com/openshift/certman-operator/pkg/k8sutil"
"github.com/openshift/certman-operator/pkg/localmetrics"
"github.com/openshift/certman-operator/pkg/version"
//+kubebuilder:scaffold:imports
)
var (
hours int = 4
metricsPath = "/metrics"
metricsPort = "8080"
scheme = apiruntime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
var log = logf.Log.WithName("cmd")
func init() {
utilruntime.Must(clientgoscheme.AddToScheme(scheme))
utilruntime.Must(certmanv1alpha1.AddToScheme(scheme))
utilruntime.Must(routev1.Install(scheme))
utilruntime.Must(hivev1.AddToScheme(scheme))
utilruntime.Must(aaov1alpha1.AddToScheme(scheme))
//+kubebuilder:scaffold:scheme
}
func printVersion() {
log.Info(fmt.Sprintf("Go Version: %s", runtime.Version()))
log.Info(fmt.Sprintf("Go OS/Arch: %s/%s", runtime.GOOS, runtime.GOARCH))
log.Info(fmt.Sprintf("Version of operator-sdk: %v", version.SDKVersion))
}
func main() {
var metricsAddr string
var enableLeaderElection bool
var probeAddr string
flag.StringVar(&metricsAddr, "metrics-bind-address", ":"+metricsPort, "The address the metric endpoint binds to.")
flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
flag.BoolVar(&enableLeaderElection, "leader-elect", false,
"Enable leader election for controller manager. "+
"Enabling this will ensure there is only one active controller manager.")
opts := zap.Options{
Development: true,
}
opts.BindFlags(flag.CommandLine)
flag.Parse()
// Add a custom logger to log in RFC3339 format instead of UTC
configLog := uzap.NewProductionEncoderConfig()
configLog.EncodeTime = func(ts time.Time, encoder zapcore.PrimitiveArrayEncoder) {
encoder.AppendString(ts.UTC().Format(time.RFC3339Nano))
}
logfmtEncoder := zaplogfmt.NewEncoder(configLog)
logger := zap.New(zap.UseDevMode(true), zap.WriteTo(os.Stdout), zap.Encoder(logfmtEncoder))
logf.SetLogger(logger)
ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
printVersion()
namespace, err := k8sutil.GetWatchNamespace()
if err != nil {
log.Error(err, "Failed to get watch namespace")
os.Exit(1)
}
// Get a config to talk to the apiserver
cfg, err := config.GetConfig()
if err != nil {
log.Error(err, "")
os.Exit(1)
}
ctx := context.TODO()
// Ensure lock for leader election
_, err = k8sutil.GetOperatorNamespace()
if err == nil {
err = leader.Become(ctx, "certman-operator-lock")
if err != nil {
setupLog.Error(err, "failed to create leader lock")
os.Exit(1)
}
} else if err == k8sutil.ErrRunLocal || err == k8sutil.ErrNoNamespace {
setupLog.Info("Skipping leader election; not running in a cluster.")
} else {
setupLog.Error(err, "Failed to get operator namespace")
os.Exit(1)
}
// Set default manager options
options := manager.Options{
// Namespace: namespace,
Scheme: scheme,
WebhookServer: webhook.NewServer(webhook.Options{Port: 9443}),
HealthProbeBindAddress: probeAddr,
LeaderElection: enableLeaderElection,
LeaderElectionID: "529d7a9e.managed.openshift.io",
// Disable controller-runtime metrics serving
Metrics: metricsserver.Options{BindAddress: "0"},
}
// cacheOptions := cache.Options{
// Scheme: options.Scheme,
// }
// Add support for MultiNamespace set in WATCH_NAMESPACE (e.g ns1,ns2)
// Note that this is not intended to be used for excluding namespaces, this is better done via a Predicate
// Also note that you may face performance issues when using this with a high number of namespaces.
// More Info: https://sdk.operatorframework.io/docs/building-operators/golang/operator-scope/#watching-resources-in-a-set-of-namespaces
if strings.Contains(namespace, ",") {
ccMap := map[string]cache.Config{}
for _, ns := range strings.Split(namespace, ",") {
ccMap[ns] = cache.Config{}
}
options.Cache.DefaultNamespaces = ccMap
}
mgr, err := ctrl.NewManager(cfg, options)
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
// Add CertificateRequest controller to the manager
if err = (&certificaterequest.CertificateRequestReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
ClientBuilder: cClient.NewClient,
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "CertificateRequest")
os.Exit(1)
}
// Add ClusterDeployment controller to the manager
if err = (&clusterdeployment.ClusterDeploymentReconciler{
Client: mgr.GetClient(),
Scheme: mgr.GetScheme(),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "ClusterDeployment")
os.Exit(1)
}
//+kubebuilder:scaffold:builder
if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
setupLog.Error(err, "unable to set up health check")
os.Exit(1)
}
if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
setupLog.Error(err, "unable to set up ready check")
os.Exit(1)
}
// Instantiate metricsServer object configured with variables defined in
// localmetrics package.
metricsServer := metrics.NewBuilder(operatorconfig.OperatorNamespace, operatorconfig.OperatorName).
WithPort(metricsPort).
WithPath(metricsPath).
WithCollectors(localmetrics.MetricsList).
WithRoute().
GetConfig()
// Get the namespace the operator is currently deployed in.
if _, err := k8sutil.GetOperatorNamespace(); err != nil {
if errors.Is(err, k8sutil.ErrRunLocal) {
log.Info("Skipping CR metrics server creation; not running in a cluster.")
} else {
log.Error(err, "Failed to get operator namespace")
}
} else {
if err := metrics.ConfigureMetrics(context.TODO(), *metricsServer); err != nil {
log.Error(err, "Failed to configure Metrics")
os.Exit(1)
}
log.Info("Successfully configured Metrics")
}
// Invoke UpdateMetrics at a frequency defined as hours within a goroutine.
go localmetrics.UpdateMetrics(hours)
log.Info("Starting the Cmd.")
setupLog.Info("starting manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}