/
profile_new.go
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/
profile_new.go
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// Copyright 2017 CoreOS Inc.
//
// 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 cli
import (
"encoding/json"
"fmt"
"io"
"os"
"path/filepath"
"strings"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/coreos/torcx/internal/torcx"
)
var (
cmdProfileNew = &cobra.Command{
Use: "new <NAME>",
Short: "creates a new profile",
Long: "Creates a new profile, optionally from an existing profile",
RunE: runProfileNew,
}
flagProfileNewFromNext bool
flagProfileNewFrom string
flagProfileNewName string
flagProfileNewFile string
)
func init() {
cmdProfile.AddCommand(cmdProfileNew)
cmdProfileNew.Flags().StringVar(&flagProfileNewFrom, "from", "", "profile name to duplicate")
cmdProfileNew.Flags().BoolVar(&flagProfileNewFromNext, "from-next", false, "duplicate profile marked for boot")
cmdProfileNew.Flags().StringVar(&flagProfileNewName, "name", "", "create profile in the store with name NAME")
cmdProfileNew.Flags().StringVar(&flagProfileNewFile, "file", "", "create profile at path FILE")
}
func runProfileNew(cmd *cobra.Command, args []string) error {
commonCfg, err := fillCommonRuntime("")
if err != nil {
return errors.Wrap(err, "common configuration failed")
}
profiles, err := torcx.ListProfiles(commonCfg.ProfileDirs())
if err != nil {
return errors.Wrap(err, "Could not list profiles")
}
if flagProfileNewName != "" {
if flagProfileNewFile != "" {
return cmd.Usage()
}
// Only if a profile name is specified: make the directory
if err := os.MkdirAll(commonCfg.UserProfileDir(), 0755); err != nil {
return errors.Wrapf(err, "could not make profile directory %s", commonCfg.UserProfileDir())
}
if _, ok := profiles[flagProfileNewName]; ok {
return fmt.Errorf("profile %s already exists", flagProfileNewName)
}
flagProfileNewFile = filepath.Join(commonCfg.UserProfileDir(), flagProfileNewName+".json")
}
if !strings.HasSuffix(flagProfileNewFile, ".json") {
return cmd.Usage()
}
if flagProfileNewFromNext && flagProfileNewFrom != "" {
return fmt.Errorf("error, --from and --from-next cannot both be specified")
}
if flagProfileNewFromNext {
flagProfileNewFrom, err = commonCfg.NextProfileName()
if err != nil {
return errors.Wrap(err, "could not read next profile")
}
}
if flagProfileNewFrom != "" {
return copyProfile(profiles, flagProfileNewFrom, flagProfileNewFile)
}
return newBlankProfile(flagProfileNewFile)
}
func copyProfile(profiles map[string]string, fromName string, toPath string) error {
fromPath, ok := profiles[fromName]
if !ok {
return fmt.Errorf("Could not find profile %s", fromName)
}
fromFp, err := os.Open(fromPath)
if err != nil {
return errors.Wrap(err, "could not open source profile")
}
defer fromFp.Close()
toFp, err := os.Create(toPath)
if err != nil {
return errors.Wrap(err, "could not create destination profile")
}
defer toFp.Close()
if _, err = io.Copy(toFp, fromFp); err != nil {
return errors.Wrap(err, "could not write destination profile")
}
if err := toFp.Close(); err != nil {
return errors.Wrap(err, "could not close destination profile")
}
return nil
}
func newBlankProfile(toPath string) error {
blank := torcx.ProfileManifestV0{
Kind: torcx.ProfileManifestV0K,
Value: torcx.Images{
Images: []torcx.Image{},
},
}
fp, err := os.Create(toPath)
if err != nil {
return errors.Wrap(err, "could not create profile")
}
enc := json.NewEncoder(fp)
if err := enc.Encode(blank); err != nil {
return errors.Wrap(err, "could not write profile")
}
return nil
}