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applicationset_controller.go
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/
applicationset_controller.go
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package command
import (
"context"
"fmt"
"net/http"
"os"
"strings"
"time"
"github.com/argoproj/pkg/stats"
"k8s.io/apimachinery/pkg/runtime"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/cache"
"github.com/argoproj/argo-cd/v2/applicationset/controllers"
"github.com/argoproj/argo-cd/v2/applicationset/generators"
"github.com/argoproj/argo-cd/v2/applicationset/utils"
"github.com/argoproj/argo-cd/v2/common"
"github.com/argoproj/argo-cd/v2/reposerver/askpass"
"github.com/argoproj/argo-cd/v2/util/env"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
"k8s.io/client-go/tools/clientcmd"
"github.com/argoproj/argo-cd/v2/applicationset/services"
appv1alpha1 "github.com/argoproj/argo-cd/v2/pkg/apis/application/v1alpha1"
appsetv1alpha1 "github.com/argoproj/argo-cd/v2/pkg/apis/applicationset/v1alpha1"
appclientset "github.com/argoproj/argo-cd/v2/pkg/client/clientset/versioned"
"github.com/argoproj/argo-cd/v2/util/cli"
"github.com/argoproj/argo-cd/v2/util/db"
"github.com/argoproj/argo-cd/v2/util/errors"
argosettings "github.com/argoproj/argo-cd/v2/util/settings"
)
// TODO: load this using Cobra. https://github.com/argoproj/argo-cd/issues/10157
func getSubmoduleEnabled() bool {
return env.ParseBoolFromEnv(common.EnvGitSubmoduleEnabled, true)
}
func NewCommand() *cobra.Command {
var (
clientConfig clientcmd.ClientConfig
metricsAddr string
probeBindAddr string
webhookAddr string
enableLeaderElection bool
namespace string
argocdRepoServer string
policy string
debugLog bool
dryRun bool
logFormat string
logLevel string
)
scheme := runtime.NewScheme()
_ = clientgoscheme.AddToScheme(scheme)
_ = appsetv1alpha1.AddToScheme(scheme)
_ = appv1alpha1.AddToScheme(scheme)
var command = cobra.Command{
Use: "controller",
Short: "Starts Argo CD ApplicationSet controller",
RunE: func(c *cobra.Command, args []string) error {
restConfig, err := clientConfig.ClientConfig()
if err != nil {
return err
}
vers := common.GetVersion()
restConfig.UserAgent = fmt.Sprintf("argocd-applicationset-controller/%s (%s)", vers.Version, vers.Platform)
if namespace == "" {
namespace, _, err = clientConfig.Namespace()
if err != nil {
return err
}
}
level, err := log.ParseLevel(logLevel)
if err != nil {
return err
}
log.SetLevel(level)
log.Info(fmt.Sprintf("ApplicationSet controller %s using namespace '%s' ", vers.Version, namespace), "namespace", namespace, "COMMIT_ID", vers.GitCommit)
switch strings.ToLower(logFormat) {
case "json":
log.SetFormatter(&log.JSONFormatter{})
case "text":
if os.Getenv("FORCE_LOG_COLORS") == "1" {
log.SetFormatter(&log.TextFormatter{ForceColors: true})
}
default:
return fmt.Errorf("Unknown log format '%s'", logFormat)
}
policyObj, exists := utils.Policies[policy]
if !exists {
log.Info("Policy value can be: sync, create-only, create-update")
os.Exit(1)
}
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme,
MetricsBindAddress: metricsAddr,
// Our cache and thus watches and client queries are restricted to the namespace we're running in. This assumes
// the applicationset controller is in the same namespace as argocd, which should be the same namespace of
// all cluster Secrets and Applications we interact with.
NewCache: cache.MultiNamespacedCacheBuilder([]string{namespace}),
HealthProbeBindAddress: probeBindAddr,
Port: 9443,
LeaderElection: enableLeaderElection,
LeaderElectionID: "58ac56fa.applicationsets.argoproj.io",
DryRunClient: dryRun,
})
if err != nil {
log.Error(err, "unable to start manager")
os.Exit(1)
}
dynamicClient, err := dynamic.NewForConfig(mgr.GetConfig())
if err != nil {
return err
}
k8sClient, err := kubernetes.NewForConfig(mgr.GetConfig())
if err != nil {
return err
}
argoSettingsMgr := argosettings.NewSettingsManager(context.Background(), k8sClient, namespace)
appSetConfig := appclientset.NewForConfigOrDie(mgr.GetConfig())
argoCDDB := db.NewDB(namespace, argoSettingsMgr, k8sClient)
// start a webhook server that listens to incoming webhook payloads
webhookHandler, err := utils.NewWebhookHandler(namespace, argoSettingsMgr, mgr.GetClient())
if err != nil {
log.Error(err, "failed to create webhook handler")
}
if webhookHandler != nil {
startWebhookServer(webhookHandler, webhookAddr)
}
askPassServer := askpass.NewServer()
go func() { errors.CheckError(askPassServer.Run(askpass.SocketPath)) }()
terminalGenerators := map[string]generators.Generator{
"List": generators.NewListGenerator(),
"Clusters": generators.NewClusterGenerator(mgr.GetClient(), context.Background(), k8sClient, namespace),
"Git": generators.NewGitGenerator(services.NewArgoCDService(argoCDDB, askPassServer, getSubmoduleEnabled())),
"SCMProvider": generators.NewSCMProviderGenerator(mgr.GetClient()),
"ClusterDecisionResource": generators.NewDuckTypeGenerator(context.Background(), dynamicClient, k8sClient, namespace),
"PullRequest": generators.NewPullRequestGenerator(mgr.GetClient()),
}
nestedGenerators := map[string]generators.Generator{
"List": terminalGenerators["List"],
"Clusters": terminalGenerators["Clusters"],
"Git": terminalGenerators["Git"],
"SCMProvider": terminalGenerators["SCMProvider"],
"ClusterDecisionResource": terminalGenerators["ClusterDecisionResource"],
"PullRequest": terminalGenerators["PullRequest"],
"Matrix": generators.NewMatrixGenerator(terminalGenerators),
"Merge": generators.NewMergeGenerator(terminalGenerators),
}
topLevelGenerators := map[string]generators.Generator{
"List": terminalGenerators["List"],
"Clusters": terminalGenerators["Clusters"],
"Git": terminalGenerators["Git"],
"SCMProvider": terminalGenerators["SCMProvider"],
"ClusterDecisionResource": terminalGenerators["ClusterDecisionResource"],
"PullRequest": terminalGenerators["PullRequest"],
"Matrix": generators.NewMatrixGenerator(nestedGenerators),
"Merge": generators.NewMergeGenerator(nestedGenerators),
}
if err = (&controllers.ApplicationSetReconciler{
Generators: topLevelGenerators,
Client: mgr.GetClient(),
Log: ctrl.Log.WithName("controllers").WithName("ApplicationSet"),
Scheme: mgr.GetScheme(),
Recorder: mgr.GetEventRecorderFor("applicationset-controller"),
Renderer: &utils.Render{},
Policy: policyObj,
ArgoAppClientset: appSetConfig,
KubeClientset: k8sClient,
ArgoDB: argoCDDB,
}).SetupWithManager(mgr); err != nil {
log.Error(err, "unable to create controller", "controller", "ApplicationSet")
os.Exit(1)
}
stats.StartStatsTicker(10 * time.Minute)
log.Info("Starting manager")
if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
log.Error(err, "problem running manager")
os.Exit(1)
}
return nil
},
}
clientConfig = cli.AddKubectlFlagsToCmd(&command)
command.Flags().StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
command.Flags().StringVar(&probeBindAddr, "probe-addr", ":8081", "The address the probe endpoint binds to.")
command.Flags().StringVar(&webhookAddr, "webhook-addr", ":7000", "The address the webhook endpoint binds to.")
command.Flags().BoolVar(&enableLeaderElection, "enable-leader-election", false,
"Enable leader election for controller manager. "+
"Enabling this will ensure there is only one active controller manager.")
command.Flags().StringVar(&namespace, "namespace", "", "Argo CD repo namespace (default: argocd)")
command.Flags().StringVar(&argocdRepoServer, "argocd-repo-server", "argocd-repo-server:8081", "Argo CD repo server address")
command.Flags().StringVar(&policy, "policy", "sync", "Modify how application is synced between the generator and the cluster. Default is 'sync' (create & update & delete), options: 'create-only', 'create-update' (no deletion)")
command.Flags().BoolVar(&debugLog, "debug", false, "Print debug logs. Takes precedence over loglevel")
command.Flags().StringVar(&logLevel, "loglevel", "info", "Set the logging level. One of: debug|info|warn|error")
command.Flags().BoolVar(&dryRun, "dry-run", false, "Enable dry run mode")
command.Flags().StringVar(&logFormat, "logformat", "text", "Set the logging format. One of: text|json")
return &command
}
func startWebhookServer(webhookHandler *utils.WebhookHandler, webhookAddr string) {
mux := http.NewServeMux()
mux.HandleFunc("/api/webhook", webhookHandler.Handler)
go func() {
log.Info("Starting webhook server")
err := http.ListenAndServe(webhookAddr, mux)
if err != nil {
log.Error(err, "failed to start webhook server")
os.Exit(1)
}
}()
}