309 lines
10 KiB
Go
309 lines
10 KiB
Go
/*
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Copyright 2020 The Flux authors
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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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"fmt"
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"net"
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"net/http"
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"os"
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"path/filepath"
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"strings"
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"time"
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"github.com/go-logr/logr"
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flag "github.com/spf13/pflag"
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"helm.sh/helm/v3/pkg/getter"
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"k8s.io/apimachinery/pkg/runtime"
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utilruntime "k8s.io/apimachinery/pkg/util/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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crtlmetrics "sigs.k8s.io/controller-runtime/pkg/metrics"
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"github.com/fluxcd/pkg/runtime/client"
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"github.com/fluxcd/pkg/runtime/events"
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"github.com/fluxcd/pkg/runtime/leaderelection"
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"github.com/fluxcd/pkg/runtime/logger"
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"github.com/fluxcd/pkg/runtime/metrics"
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"github.com/fluxcd/pkg/runtime/pprof"
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"github.com/fluxcd/pkg/runtime/probes"
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sourcev1 "github.com/fluxcd/source-controller/api/v1beta1"
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"github.com/fluxcd/source-controller/controllers"
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"github.com/fluxcd/source-controller/internal/helm"
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// +kubebuilder:scaffold:imports
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)
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const controllerName = "source-controller"
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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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getters = getter.Providers{
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getter.Provider{
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Schemes: []string{"http", "https"},
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New: getter.NewHTTPGetter,
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},
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}
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)
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func init() {
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utilruntime.Must(clientgoscheme.AddToScheme(scheme))
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utilruntime.Must(sourcev1.AddToScheme(scheme))
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// +kubebuilder:scaffold:scheme
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}
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func main() {
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var (
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metricsAddr string
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eventsAddr string
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healthAddr string
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storagePath string
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storageAddr string
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storageAdvAddr string
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concurrent int
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requeueDependency time.Duration
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watchAllNamespaces bool
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helmIndexLimit int64
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helmChartLimit int64
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helmChartFileLimit int64
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clientOptions client.Options
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logOptions logger.Options
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leaderElectionOptions leaderelection.Options
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)
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flag.StringVar(&metricsAddr, "metrics-addr", envOrDefault("METRICS_ADDR", ":8080"),
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"The address the metric endpoint binds to.")
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flag.StringVar(&eventsAddr, "events-addr", envOrDefault("EVENTS_ADDR", ""),
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"The address of the events receiver.")
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flag.StringVar(&healthAddr, "health-addr", ":9440", "The address the health endpoint binds to.")
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flag.StringVar(&storagePath, "storage-path", envOrDefault("STORAGE_PATH", ""),
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"The local storage path.")
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flag.StringVar(&storageAddr, "storage-addr", envOrDefault("STORAGE_ADDR", ":9090"),
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"The address the static file server binds to.")
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flag.StringVar(&storageAdvAddr, "storage-adv-addr", envOrDefault("STORAGE_ADV_ADDR", ""),
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"The advertised address of the static file server.")
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flag.IntVar(&concurrent, "concurrent", 2, "The number of concurrent reconciles per controller.")
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flag.BoolVar(&watchAllNamespaces, "watch-all-namespaces", true,
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"Watch for custom resources in all namespaces, if set to false it will only watch the runtime namespace.")
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flag.Int64Var(&helmIndexLimit, "helm-index-max-size", helm.MaxIndexSize,
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"The max allowed size in bytes of a Helm repository index file.")
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flag.Int64Var(&helmChartLimit, "helm-chart-max-size", helm.MaxChartSize,
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"The max allowed size in bytes of a Helm chart file.")
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flag.Int64Var(&helmChartFileLimit, "helm-chart-file-max-size", helm.MaxChartFileSize,
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"The max allowed size in bytes of a file in a Helm chart.")
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flag.DurationVar(&requeueDependency, "requeue-dependency", 30*time.Second,
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"The interval at which failing dependencies are reevaluated.")
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clientOptions.BindFlags(flag.CommandLine)
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logOptions.BindFlags(flag.CommandLine)
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leaderElectionOptions.BindFlags(flag.CommandLine)
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flag.Parse()
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ctrl.SetLogger(logger.NewLogger(logOptions))
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// Set upper bound file size limits Helm
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helm.MaxIndexSize = helmIndexLimit
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helm.MaxChartSize = helmChartLimit
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helm.MaxChartFileSize = helmChartFileLimit
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var eventRecorder *events.Recorder
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if eventsAddr != "" {
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var err error
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if eventRecorder, err = events.NewRecorder(eventsAddr, controllerName); err != nil {
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setupLog.Error(err, "unable to create event recorder")
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os.Exit(1)
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}
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}
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metricsRecorder := metrics.NewRecorder()
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crtlmetrics.Registry.MustRegister(metricsRecorder.Collectors()...)
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watchNamespace := ""
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if !watchAllNamespaces {
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watchNamespace = os.Getenv("RUNTIME_NAMESPACE")
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}
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restConfig := client.GetConfigOrDie(clientOptions)
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mgr, err := ctrl.NewManager(restConfig, ctrl.Options{
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Scheme: scheme,
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MetricsBindAddress: metricsAddr,
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HealthProbeBindAddress: healthAddr,
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Port: 9443,
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LeaderElection: leaderElectionOptions.Enable,
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LeaderElectionReleaseOnCancel: leaderElectionOptions.ReleaseOnCancel,
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LeaseDuration: &leaderElectionOptions.LeaseDuration,
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RenewDeadline: &leaderElectionOptions.RenewDeadline,
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RetryPeriod: &leaderElectionOptions.RetryPeriod,
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LeaderElectionID: fmt.Sprintf("%s-leader-election", controllerName),
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Namespace: watchNamespace,
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Logger: ctrl.Log,
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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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probes.SetupChecks(mgr, setupLog)
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pprof.SetupHandlers(mgr, setupLog)
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if storageAdvAddr == "" {
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storageAdvAddr = determineAdvStorageAddr(storageAddr, setupLog)
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}
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storage := mustInitStorage(storagePath, storageAdvAddr, setupLog)
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if err = (&controllers.GitRepositoryReconciler{
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Client: mgr.GetClient(),
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Scheme: mgr.GetScheme(),
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Storage: storage,
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EventRecorder: mgr.GetEventRecorderFor(controllerName),
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ExternalEventRecorder: eventRecorder,
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MetricsRecorder: metricsRecorder,
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}).SetupWithManagerAndOptions(mgr, controllers.GitRepositoryReconcilerOptions{
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MaxConcurrentReconciles: concurrent,
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DependencyRequeueInterval: requeueDependency,
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}); err != nil {
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setupLog.Error(err, "unable to create controller", "controller", sourcev1.GitRepositoryKind)
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os.Exit(1)
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}
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if err = (&controllers.HelmRepositoryReconciler{
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Client: mgr.GetClient(),
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Scheme: mgr.GetScheme(),
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Storage: storage,
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Getters: getters,
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EventRecorder: mgr.GetEventRecorderFor(controllerName),
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ExternalEventRecorder: eventRecorder,
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MetricsRecorder: metricsRecorder,
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}).SetupWithManagerAndOptions(mgr, controllers.HelmRepositoryReconcilerOptions{
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MaxConcurrentReconciles: concurrent,
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}); err != nil {
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setupLog.Error(err, "unable to create controller", "controller", sourcev1.HelmRepositoryKind)
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os.Exit(1)
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}
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if err = (&controllers.HelmChartReconciler{
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Client: mgr.GetClient(),
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Scheme: mgr.GetScheme(),
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Storage: storage,
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Getters: getters,
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EventRecorder: mgr.GetEventRecorderFor(controllerName),
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ExternalEventRecorder: eventRecorder,
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MetricsRecorder: metricsRecorder,
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}).SetupWithManagerAndOptions(mgr, controllers.HelmChartReconcilerOptions{
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MaxConcurrentReconciles: concurrent,
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}); err != nil {
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setupLog.Error(err, "unable to create controller", "controller", sourcev1.HelmChartKind)
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os.Exit(1)
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}
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if err = (&controllers.BucketReconciler{
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Client: mgr.GetClient(),
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Scheme: mgr.GetScheme(),
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Storage: storage,
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EventRecorder: mgr.GetEventRecorderFor(controllerName),
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ExternalEventRecorder: eventRecorder,
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MetricsRecorder: metricsRecorder,
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}).SetupWithManagerAndOptions(mgr, controllers.BucketReconcilerOptions{
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MaxConcurrentReconciles: concurrent,
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}); err != nil {
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setupLog.Error(err, "unable to create controller", "controller", "Bucket")
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os.Exit(1)
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}
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// +kubebuilder:scaffold:builder
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go func() {
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// Block until our controller manager is elected leader. We presume our
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// entire process will terminate if we lose leadership, so we don't need
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// to handle that.
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<-mgr.Elected()
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startFileServer(storage.BasePath, storageAddr, setupLog)
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}()
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setupLog.Info("starting manager")
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if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
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setupLog.Error(err, "problem running manager")
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os.Exit(1)
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}
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}
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func startFileServer(path string, address string, l logr.Logger) {
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l.Info("starting file server")
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fs := http.FileServer(http.Dir(path))
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http.Handle("/", fs)
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err := http.ListenAndServe(address, nil)
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if err != nil {
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l.Error(err, "file server error")
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}
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}
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func mustInitStorage(path string, storageAdvAddr string, l logr.Logger) *controllers.Storage {
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if path == "" {
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p, _ := os.Getwd()
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path = filepath.Join(p, "bin")
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os.MkdirAll(path, 0777)
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}
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storage, err := controllers.NewStorage(path, storageAdvAddr, 5*time.Minute)
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if err != nil {
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l.Error(err, "unable to initialise storage")
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os.Exit(1)
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}
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return storage
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}
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func determineAdvStorageAddr(storageAddr string, l logr.Logger) string {
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// TODO(hidde): remove next MINOR prerelease as it can be passed in using
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// Kubernetes' substitution.
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if os.Getenv("RUNTIME_NAMESPACE") != "" {
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svcParts := strings.Split(os.Getenv("HOSTNAME"), "-")
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return fmt.Sprintf("%s.%s",
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strings.Join(svcParts[:len(svcParts)-2], "-"), os.Getenv("RUNTIME_NAMESPACE"))
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}
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host, port, err := net.SplitHostPort(storageAddr)
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if err != nil {
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l.Error(err, "unable to parse storage address")
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os.Exit(1)
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}
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switch host {
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case "":
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host = "localhost"
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case "0.0.0.0":
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host = os.Getenv("HOSTNAME")
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if host == "" {
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hn, err := os.Hostname()
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if err != nil {
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l.Error(err, "0.0.0.0 specified in storage addr but hostname is invalid")
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os.Exit(1)
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}
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host = hn
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}
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}
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return net.JoinHostPort(host, port)
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}
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func envOrDefault(envName, defaultValue string) string {
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ret := os.Getenv(envName)
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if ret != "" {
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return ret
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}
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return defaultValue
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}
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