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config.go
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config.go
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// Copyright 2016 The rkt 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 main
import (
"encoding/json"
"github.com/spf13/cobra"
)
var (
cmdConfig = &cobra.Command{
Use: "config",
Short: "Print configuration for each stage in JSON format",
Long: `The output will be parsable JSON with "stage0" and stage1" as keys and rkt configuration entries as values.
The generated configuration entries resemble the original rkt configuration format.`,
Run: runWrapper(runConfig),
}
flagConfigPrettyPrint bool
)
func init() {
cmdRkt.AddCommand(cmdConfig)
cmdConfig.Flags().BoolVar(&flagConfigPrettyPrint, "pretty-print", true, "apply indent to format the output")
}
func runConfig(cmd *cobra.Command, args []string) int {
config, err := getConfig()
if err != nil {
stderr.PrintE("cannot get configuration", err)
return 254
}
var b []byte
if flagConfigPrettyPrint {
b, err = json.MarshalIndent(config, "", "\t")
} else {
b, err = json.Marshal(config)
}
if err != nil {
stderr.PanicE("error marshaling configuration", err)
}
stdout.Print(string(b))
return 0
}