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garbage_collector.go
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garbage_collector.go
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package main
import (
"context"
"errors"
"fmt"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/metrics/server"
kargoapi "github.com/akuity/kargo/api/v1alpha1"
"github.com/akuity/kargo/internal/api/kubernetes"
"github.com/akuity/kargo/internal/garbage"
"github.com/akuity/kargo/internal/kubeclient"
"github.com/akuity/kargo/internal/os"
versionpkg "github.com/akuity/kargo/internal/version"
)
type garbageCollectorOptions struct {
KubeConfig string
Logger *log.Logger
}
func newGarbageCollectorCommand() *cobra.Command {
cmdOpts := &garbageCollectorOptions{
Logger: log.StandardLogger(),
}
cmd := &cobra.Command{
Use: "garbage-collector",
DisableAutoGenTag: true,
SilenceErrors: true,
SilenceUsage: true,
RunE: func(cmd *cobra.Command, _ []string) error {
cmdOpts.complete()
return cmdOpts.run(cmd.Context())
},
}
return cmd
}
func (o *garbageCollectorOptions) complete() {
o.KubeConfig = os.GetEnv("KUBECONFIG", "")
}
func (o *garbageCollectorOptions) run(ctx context.Context) error {
version := versionpkg.GetVersion()
o.Logger.WithFields(log.Fields{
"version": version.Version,
"commit": version.GitCommit,
}).Info("Starting Kargo Garbage Collector")
mgr, err := o.setupManager(ctx)
if err != nil {
return fmt.Errorf("error setting up controller manager: %w", err)
}
ctx, cancel := context.WithCancel(ctx)
defer cancel()
go func() {
if err := mgr.Start(ctx); err != nil {
panic(fmt.Errorf("start manager: %w", err))
}
}()
if !mgr.GetCache().WaitForCacheSync(ctx) {
return errors.New("error waiting for cache sync")
}
cfg := garbage.CollectorConfigFromEnv()
return garbage.NewCollector(mgr.GetClient(), cfg).Run(ctx)
}
func (o *garbageCollectorOptions) setupManager(ctx context.Context) (manager.Manager, error) {
restCfg, err := kubernetes.GetRestConfig(ctx, o.KubeConfig)
if err != nil {
return nil, fmt.Errorf("error loading REST config: %w", err)
}
scheme := runtime.NewScheme()
if err = corev1.AddToScheme(scheme); err != nil {
return nil, fmt.Errorf("error adding Kubernetes core API to scheme: %w", err)
}
if err = kargoapi.AddToScheme(scheme); err != nil {
return nil, fmt.Errorf("error adding Kargo API to scheme: %w", err)
}
mgr, err := ctrl.NewManager(
restCfg,
ctrl.Options{
Scheme: scheme,
Metrics: server.Options{
BindAddress: "0",
},
},
)
if err != nil {
return nil, fmt.Errorf("error initializing controller manager: %w", err)
}
// Index Promotions by Stage
if err = kubeclient.IndexPromotionsByStage(ctx, mgr); err != nil {
return nil, fmt.Errorf("error indexing Promotions by Stage: %w", err)
}
// Index Freight by Warehouse
if err = kubeclient.IndexFreightByWarehouse(ctx, mgr); err != nil {
return nil, fmt.Errorf("error indexing Freight by Warehouse: %w", err)
}
// Index Stages by Freight
if err = kubeclient.IndexStagesByFreight(ctx, mgr); err != nil {
return nil, fmt.Errorf("error indexing Stages by Freight: %w", err)
}
return mgr, nil
}