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syncer.go
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syncer.go
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// Copyright The Karpor Authors.
//
// 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 app
import (
"context"
"github.com/KusionStack/karpor/pkg/infra/search/storage/elasticsearch"
"github.com/KusionStack/karpor/pkg/kubernetes/scheme"
"github.com/KusionStack/karpor/pkg/syncer"
esclient "github.com/elastic/go-elasticsearch/v8"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
"k8s.io/klog/v2"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/healthz"
)
type syncerOptions struct {
MetricsAddr string
ProbeAddr string
ElasticSearchAddresses []string
}
func NewSyncerOptions() *syncerOptions {
return &syncerOptions{}
}
func (o *syncerOptions) AddFlags(fs *pflag.FlagSet) {
fs.StringVar(&o.MetricsAddr, "metrics-bind-address", ":8080", "The address the metric endpoint binds to.")
fs.StringVar(&o.ProbeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
fs.StringSliceVar(&o.ElasticSearchAddresses, "elastic-search-addresses", nil, "The elastic search address.")
}
func NewSyncerCommand(ctx context.Context) *cobra.Command {
options := NewSyncerOptions()
cmd := &cobra.Command{
Use: "syncer",
Short: "start a resource syncer to sync resource from clusters",
RunE: func(cmd *cobra.Command, args []string) error {
return run(ctx, options)
},
}
options.AddFlags(cmd.Flags())
return cmd
}
func run(ctx context.Context, options *syncerOptions) error {
ctrl.SetLogger(klog.NewKlogr())
log := ctrl.Log.WithName("setup")
mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
Scheme: scheme.Scheme,
MetricsBindAddress: options.MetricsAddr,
HealthProbeBindAddress: options.ProbeAddr,
})
if err != nil {
log.Error(err, "unable to start manager")
return err
}
// TODO: add startup parameters to change the type of storage
es, err := elasticsearch.NewStorage(esclient.Config{
Addresses: options.ElasticSearchAddresses,
})
if err != nil {
log.Error(err, "unable to init elasticsearch client")
return err
}
if err = syncer.NewSyncReconciler(es).SetupWithManager(mgr); err != nil {
log.Error(err, "unable to create resource syncer")
return err
}
if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
log.Error(err, "unable to set up health check")
return err
}
if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
log.Error(err, "unable to set up ready check")
return err
}
log.Info("starting manager")
if err := mgr.Start(ctx); err != nil {
log.Error(err, "problem running manager")
return err
}
return nil
}