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etcdctl.go
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etcdctl.go
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/*
Copyright 2022 The Kubernetes 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 etcdctl provides a method for users to use the etcdctl binary in a cluster.
package etcdctl
import (
"context"
"fmt"
"github.com/spf13/cobra"
"sigs.k8s.io/kwok/pkg/config"
"sigs.k8s.io/kwok/pkg/kwokctl/runtime"
"sigs.k8s.io/kwok/pkg/log"
"sigs.k8s.io/kwok/pkg/utils/exec"
"sigs.k8s.io/kwok/pkg/utils/path"
)
type flagpole struct {
Name string
}
// NewCommand returns a new cobra.Command for use etcdctl in a cluster
func NewCommand(ctx context.Context) *cobra.Command {
flags := &flagpole{}
cmd := &cobra.Command{
Use: "etcdctl [command]",
Short: "etcdctl in cluster",
RunE: func(cmd *cobra.Command, args []string) error {
flags.Name = config.DefaultCluster
err := runE(cmd.Context(), flags, args)
if err != nil {
return fmt.Errorf("%v: %w", args, err)
}
return nil
},
}
cmd.DisableFlagParsing = true
return cmd
}
func runE(ctx context.Context, flags *flagpole, args []string) error {
name := config.ClusterName(flags.Name)
workdir := path.Join(config.ClustersDir, flags.Name)
logger := log.FromContext(ctx)
logger = logger.With("cluster", flags.Name)
ctx = log.NewContext(ctx, logger)
rt, err := runtime.DefaultRegistry.Load(ctx, name, workdir)
if err != nil {
return err
}
err = rt.EtcdctlInCluster(exec.WithStdIO(ctx), args...)
if err != nil {
return err
}
return nil
}