forked from dgraph-io/badger
/
root.go
65 lines (56 loc) · 1.76 KB
/
root.go
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/*
* Copyright 2017 Dgraph Labs, Inc. and Contributors
*
* 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 cmd
import (
"errors"
"fmt"
"os"
"strings"
"github.com/spf13/cobra"
)
var sstDir, vlogDir string
// RootCmd represents the base command when called without any subcommands
var RootCmd = &cobra.Command{
Use: "badger",
Short: "Tools to manage Badger database.",
PersistentPreRunE: validateRootCmdArgs,
}
// Execute adds all child commands to the root command and sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
if err := RootCmd.Execute(); err != nil {
fmt.Println(err)
os.Exit(1)
}
}
func init() {
RootCmd.PersistentFlags().StringVar(&sstDir, "dir", "",
"Directory where the LSM tree files are located. (required)")
RootCmd.PersistentFlags().StringVar(&vlogDir, "vlog-dir", "",
"Directory where the value log files are located, if different from --dir")
}
func validateRootCmdArgs(cmd *cobra.Command, args []string) error {
if strings.HasPrefix(cmd.Use, "help ") { // No need to validate if it is help
return nil
}
if sstDir == "" {
return errors.New("--sst-dir not specified")
}
if vlogDir == "" {
vlogDir = sstDir
}
return nil
}