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// Copyright 2017 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"fmt"
"io"
"os"
"path/filepath"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/swarm/storage"
"gopkg.in/urfave/cli.v1"
)
var dbCommand = cli.Command{
Name: "db",
CustomHelpTemplate: helpTemplate,
Usage: "manage the local chunk database",
ArgsUsage: "db COMMAND",
Description: "Manage the local chunk database",
Subcommands: []cli.Command{
{
Action: dbExport,
CustomHelpTemplate: helpTemplate,
Name: "export",
Usage: "export a local chunk database as a tar archive (use - to send to stdout)",
ArgsUsage: "<chunkdb> <file>",
Description: `
Export a local chunk database as a tar archive (use - to send to stdout).
swarm db export ~/.ethereum/swarm/bzz-KEY/chunks chunks.tar
The export may be quite large, consider piping the output through the Unix
pv(1) tool to get a progress bar:
swarm db export ~/.ethereum/swarm/bzz-KEY/chunks - | pv > chunks.tar
`,
},
{
Action: dbImport,
CustomHelpTemplate: helpTemplate,
Name: "import",
Usage: "import chunks from a tar archive into a local chunk database (use - to read from stdin)",
ArgsUsage: "<chunkdb> <file>",
Description: `Import chunks from a tar archive into a local chunk database (use - to read from stdin).
swarm db import ~/.ethereum/swarm/bzz-KEY/chunks chunks.tar
The import may be quite large, consider piping the input through the Unix
pv(1) tool to get a progress bar:
pv chunks.tar | swarm db import ~/.ethereum/swarm/bzz-KEY/chunks -`,
},
},
}
func dbExport(ctx *cli.Context) {
args := ctx.Args()
if len(args) != 3 {
utils.Fatalf("invalid arguments, please specify both <chunkdb> (path to a local chunk database), <file> (path to write the tar archive to, - for stdout) and the base key")
}
store, err := openLDBStore(args[0], common.Hex2Bytes(args[2]))
if err != nil {
utils.Fatalf("error opening local chunk database: %s", err)
}
defer store.Close()
var out io.Writer
if args[1] == "-" {
out = os.Stdout
} else {
f, err := os.Create(args[1])
if err != nil {
utils.Fatalf("error opening output file: %s", err)
}
defer f.Close()
out = f
}
count, err := store.Export(out)
if err != nil {
utils.Fatalf("error exporting local chunk database: %s", err)
}
log.Info(fmt.Sprintf("successfully exported %d chunks", count))
}
func dbImport(ctx *cli.Context) {
args := ctx.Args()
if len(args) != 3 {
utils.Fatalf("invalid arguments, please specify both <chunkdb> (path to a local chunk database), <file> (path to read the tar archive from, - for stdin) and the base key")
}
store, err := openLDBStore(args[0], common.Hex2Bytes(args[2]))
if err != nil {
utils.Fatalf("error opening local chunk database: %s", err)
}
defer store.Close()
var in io.Reader
if args[1] == "-" {
in = os.Stdin
} else {
f, err := os.Open(args[1])
if err != nil {
utils.Fatalf("error opening input file: %s", err)
}
defer f.Close()
in = f
}
count, err := store.Import(in)
if err != nil {
utils.Fatalf("error importing local chunk database: %s", err)
}
log.Info(fmt.Sprintf("successfully imported %d chunks", count))
}
func openLDBStore(path string, basekey []byte) (*storage.LDBStore, error) {
if _, err := os.Stat(filepath.Join(path, "CURRENT")); err != nil {
return nil, fmt.Errorf("invalid chunkdb path: %s", err)
}
storeparams := storage.NewDefaultStoreParams()
ldbparams := storage.NewLDBStoreParams(storeparams, path)
ldbparams.BaseKey = basekey
return storage.NewLDBStore(ldbparams)
}
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