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main.go
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main.go
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// Copyright 2016 The etcd 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 (
"fmt"
"log"
"os"
"path/filepath"
"strings"
"github.com/spf13/cobra"
)
var (
rootCommand = &cobra.Command{
Use: "etcd-dump-db",
Short: "etcd-dump-db inspects etcd db files.",
}
listBucketCommand = &cobra.Command{
Use: "list-bucket [data dir or db file path]",
Short: "bucket lists all buckets.",
Run: listBucketCommandFunc,
}
iterateBucketCommand = &cobra.Command{
Use: "iterate-bucket [data dir or db file path] [bucket name]",
Short: "iterate-bucket lists key-value pairs in reverse order.",
Run: iterateBucketCommandFunc,
}
getHashCommand = &cobra.Command{
Use: "hash [data dir or db file path]",
Short: "hash computes the hash of db file.",
Run: getHashCommandFunc,
}
)
var iterateBucketLimit uint64
var iterateBucketDecode bool
func init() {
iterateBucketCommand.PersistentFlags().Uint64Var(&iterateBucketLimit, "limit", 0, "max number of key-value pairs to iterate (0< to iterate all)")
iterateBucketCommand.PersistentFlags().BoolVar(&iterateBucketDecode, "decode", false, "true to decode Protocol Buffer encoded data")
rootCommand.AddCommand(listBucketCommand)
rootCommand.AddCommand(iterateBucketCommand)
rootCommand.AddCommand(getHashCommand)
}
func main() {
if err := rootCommand.Execute(); err != nil {
fmt.Fprintln(os.Stdout, err)
os.Exit(1)
}
}
func listBucketCommandFunc(cmd *cobra.Command, args []string) {
if len(args) < 1 {
log.Fatalf("Must provide at least 1 argument (got %v)", args)
}
dp := args[0]
if !strings.HasSuffix(dp, "db") {
dp = filepath.Join(snapDir(dp), "db")
}
if !existFileOrDir(dp) {
log.Fatalf("%q does not exist", dp)
}
bts, err := getBuckets(dp)
if err != nil {
log.Fatal(err)
}
for _, b := range bts {
fmt.Println(b)
}
}
func iterateBucketCommandFunc(cmd *cobra.Command, args []string) {
if len(args) != 2 {
log.Fatalf("Must provide 2 arguments (got %v)", args)
}
dp := args[0]
if !strings.HasSuffix(dp, "db") {
dp = filepath.Join(snapDir(dp), "db")
}
if !existFileOrDir(dp) {
log.Fatalf("%q does not exist", dp)
}
bucket := args[1]
err := iterateBucket(dp, bucket, iterateBucketLimit, iterateBucketDecode)
if err != nil {
log.Fatal(err)
}
}
func getHashCommandFunc(cmd *cobra.Command, args []string) {
if len(args) < 1 {
log.Fatalf("Must provide at least 1 argument (got %v)", args)
}
dp := args[0]
if !strings.HasSuffix(dp, "db") {
dp = filepath.Join(snapDir(dp), "db")
}
if !existFileOrDir(dp) {
log.Fatalf("%q does not exist", dp)
}
hash, err := getHash(dp)
if err != nil {
log.Fatal(err)
}
fmt.Printf("db path: %s\nHash: %d\n", dp, hash)
}