131 lines
3.7 KiB
Go
131 lines
3.7 KiB
Go
/*
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"context"
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"flag"
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"fmt"
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"net/http"
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"os"
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"golang.org/x/sync/errgroup"
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"k8s.io/apimachinery/pkg/runtime"
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clientgoscheme "k8s.io/client-go/kubernetes/scheme"
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_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/log/zap"
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httpv1alpha1 "github.com/kedacore/http-add-on/operator/api/v1alpha1"
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"github.com/kedacore/http-add-on/operator/controllers"
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"github.com/kedacore/http-add-on/operator/controllers/config"
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"github.com/kedacore/http-add-on/pkg/routing"
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// +kubebuilder:scaffold:imports
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)
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var (
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scheme = runtime.NewScheme()
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setupLog = ctrl.Log.WithName("setup")
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)
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func init() {
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_ = clientgoscheme.AddToScheme(scheme)
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_ = httpv1alpha1.AddToScheme(scheme)
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// +kubebuilder:scaffold:scheme
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}
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func main() {
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var metricsAddr string
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var enableLeaderElection bool
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var adminPort int
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flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
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flag.BoolVar(&enableLeaderElection, "enable-leader-election", false,
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"Enable leader election for controller manager. "+
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"Enabling this will ensure there is only one active controller manager.")
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flag.IntVar(
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&adminPort,
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"admin-port",
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9090,
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"The port on which to run the admin server. This is the port on which RPCs will be accepted to get the routing table",
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)
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flag.Parse()
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ctrl.SetLogger(zap.New(zap.UseDevMode(true)))
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mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
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Scheme: scheme,
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MetricsBindAddress: metricsAddr,
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Port: 9443,
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LeaderElection: enableLeaderElection,
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LeaderElectionID: "f8508ff1.keda.sh",
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})
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if err != nil {
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setupLog.Error(err, "unable to start manager")
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os.Exit(1)
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}
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interceptorCfg, err := config.NewInterceptorFromEnv()
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if err != nil {
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setupLog.Error(err, "unable to get interceptor configuration")
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os.Exit(1)
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}
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externalScalerCfg, err := config.NewExternalScalerFromEnv()
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if err != nil {
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setupLog.Error(err, "unable to get external scaler configuration")
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os.Exit(1)
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}
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routingTable := routing.NewTable()
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if err := (&controllers.HTTPScaledObjectReconciler{
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Client: mgr.GetClient(),
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Log: ctrl.Log.WithName("controllers").WithName("HTTPScaledObject"),
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Scheme: mgr.GetScheme(),
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InterceptorConfig: *interceptorCfg,
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ExternalScalerConfig: *externalScalerCfg,
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RoutingTable: routingTable,
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}).SetupWithManager(mgr); err != nil {
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setupLog.Error(err, "unable to create controller", "controller", "HTTPScaledObject")
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os.Exit(1)
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}
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// +kubebuilder:scaffold:builder
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ctx := context.Background()
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errGrp, _ := errgroup.WithContext(ctx)
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// start the control loop
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errGrp.Go(func() error {
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setupLog.Info("starting manager")
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return mgr.Start(ctrl.SetupSignalHandler())
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})
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// start the admin server to serve routing table information
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// to the interceptors
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errGrp.Go(func() error {
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mux := http.NewServeMux()
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routing.AddFetchRoute(setupLog, mux, routingTable)
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addr := fmt.Sprintf(":%d", adminPort)
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setupLog.Info(
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"starting admin RPC server",
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"port",
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adminPort,
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)
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return http.ListenAndServe(addr, mux)
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})
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setupLog.Error(errGrp.Wait(), "running the operator")
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}
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