knative.dev/pkg@v0.0.0-20260602142205-ac97e43f6622/apiextensions/storageversion/cmd/migrate/main.go (about)

     1  /*
     2  Copyright 2020 The Knative Authors
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package main
    18  
    19  import (
    20  	"flag"
    21  	"fmt"
    22  	"log"
    23  	"os"
    24  	"strconv"
    25  
    26  	"go.uber.org/zap"
    27  	apixclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
    28  	apierrs "k8s.io/apimachinery/pkg/api/errors"
    29  	"k8s.io/apimachinery/pkg/runtime/schema"
    30  	"k8s.io/client-go/dynamic"
    31  	"knative.dev/pkg/apiextensions/storageversion"
    32  	"knative.dev/pkg/environment"
    33  	"knative.dev/pkg/logging"
    34  	"knative.dev/pkg/signals"
    35  )
    36  
    37  const (
    38  	IgnoreNotFoundEnvKey = "IGNORE_NOT_FOUND"
    39  )
    40  
    41  func main() {
    42  	logger := setupLogger()
    43  	defer logger.Sync()
    44  
    45  	env := environment.ClientConfig{}
    46  	env.InitFlags(flag.CommandLine)
    47  
    48  	flag.Parse()
    49  
    50  	config, err := env.GetRESTConfig()
    51  	if err != nil {
    52  		logger.Fatalf("failed to get kubeconfig %s", err)
    53  	}
    54  
    55  	grs, err := parseResources(flag.Args())
    56  	if err != nil {
    57  		logger.Fatal(err)
    58  	}
    59  
    60  	ignoreNotFound, _ := strconv.ParseBool(os.Getenv(IgnoreNotFoundEnvKey))
    61  
    62  	migrator := storageversion.NewMigrator(
    63  		dynamic.NewForConfigOrDie(config),
    64  		apixclient.NewForConfigOrDie(config),
    65  	)
    66  
    67  	ctx := signals.NewContext()
    68  
    69  	logger.Infof("Migrating %d group resources", len(grs))
    70  
    71  	for _, gr := range grs {
    72  		logger.Info("Migrating group resource ", gr)
    73  		if err := migrator.Migrate(ctx, gr); err != nil {
    74  			if ignoreNotFound && apierrs.IsNotFound(err) {
    75  				logger.Infof("Ignoring resource migration - unable to fetch crd %s - %s", gr, err)
    76  				continue
    77  			}
    78  			logger.Fatal("Failed to migrate: ", err)
    79  		}
    80  	}
    81  
    82  	logger.Info("Migration complete")
    83  }
    84  
    85  func parseResources(args []string) ([]schema.GroupResource, error) {
    86  	grs := make([]schema.GroupResource, 0, len(args))
    87  	for _, arg := range args {
    88  		gr := schema.ParseGroupResource(arg)
    89  		if gr.Empty() {
    90  			return nil, fmt.Errorf("unable to parse group version: %s", arg)
    91  		}
    92  		grs = append(grs, gr)
    93  	}
    94  	return grs, nil
    95  }
    96  
    97  func setupLogger() *zap.SugaredLogger {
    98  	const component = "storage-migrator"
    99  
   100  	config, err := logging.NewConfigFromMap(nil)
   101  	if err != nil {
   102  		log.Fatal("Failed to create logging config: ", err)
   103  	}
   104  
   105  	logger, _ := logging.NewLoggerFromConfig(config, component)
   106  	return logger
   107  }