// Copyright 2018 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 (
"context"
"fmt"
"path/filepath"
"strings"
"time"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/rpc"
"github.com/ethereum/go-ethereum/swarm/fuse"
"gopkg.in/urfave/cli.v1"
)
var fsCommand = cli.Command{
Name: "fs",
CustomHelpTemplate: helpTemplate,
Usage: "perform FUSE operations",
ArgsUsage: "fs COMMAND",
Description: "Performs FUSE operations by mounting/unmounting/listing mount points. This assumes you already have a Swarm node running locally. For all operation you must reference the correct path to bzzd.ipc in order to communicate with the node",
Subcommands: []cli.Command{
{
Action: mount,
CustomHelpTemplate: helpTemplate,
Name: "mount",
Flags: []cli.Flag{utils.IPCPathFlag},
Usage: "mount a swarm hash to a mount point",
ArgsUsage: "swarm fs mount --ipcpath <path to bzzd.ipc> <manifest hash> <mount point>",
Description: "Mounts a Swarm manifest hash to a given mount point. This assumes you already have a Swarm node running locally. You must reference the correct path to your bzzd.ipc file",
},
{
Action: unmount,
CustomHelpTemplate: helpTemplate,
Name: "unmount",
Flags: []cli.Flag{utils.IPCPathFlag},
Usage: "unmount a swarmfs mount",
ArgsUsage: "swarm fs unmount --ipcpath <path to bzzd.ipc> <mount point>",
Description: "Unmounts a swarmfs mount residing at <mount point>. This assumes you already have a Swarm node running locally. You must reference the correct path to your bzzd.ipc file",
},
{
Action: listMounts,
CustomHelpTemplate: helpTemplate,
Name: "list",
Flags: []cli.Flag{utils.IPCPathFlag},
Usage: "list swarmfs mounts",
ArgsUsage: "swarm fs list --ipcpath <path to bzzd.ipc>",
Description: "Lists all mounted swarmfs volumes. This assumes you already have a Swarm node running locally. You must reference the correct path to your bzzd.ipc file",
},
},
}
func mount(cliContext *cli.Context) {
args := cliContext.Args()
if len(args) < 2 {
utils.Fatalf("Usage: swarm fs mount --ipcpath <path to bzzd.ipc> <manifestHash> <file name>")
}
client, err := dialRPC(cliContext)
if err != nil {
utils.Fatalf("had an error dailing to RPC endpoint: %v", err)
}
defer client.Close()
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
mf := &fuse.MountInfo{}
mountPoint, err := filepath.Abs(filepath.Clean(args[1]))
if err != nil {
utils.Fatalf("error expanding path for mount point: %v", err)
}
err = client.CallContext(ctx, mf, "swarmfs_mount", args[0], mountPoint)
if err != nil {
utils.Fatalf("had an error calling the RPC endpoint while mounting: %v", err)
}
}
func unmount(cliContext *cli.Context) {
args := cliContext.Args()
if len(args) < 1 {
utils.Fatalf("Usage: swarm fs unmount --ipcpath <path to bzzd.ipc> <mount path>")
}
client, err := dialRPC(cliContext)
if err != nil {
utils.Fatalf("had an error dailing to RPC endpoint: %v", err)
}
defer client.Close()
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
mf := fuse.MountInfo{}
err = client.CallContext(ctx, &mf, "swarmfs_unmount", args[0])
if err != nil {
utils.Fatalf("encountered an error calling the RPC endpoint while unmounting: %v", err)
}
fmt.Printf("%s\n", mf.LatestManifest) //print the latest manifest hash for user reference
}
func listMounts(cliContext *cli.Context) {
client, err := dialRPC(cliContext)
if err != nil {
utils.Fatalf("had an error dailing to RPC endpoint: %v", err)
}
defer client.Close()
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
mf := []fuse.MountInfo{}
err = client.CallContext(ctx, &mf, "swarmfs_listmounts")
if err != nil {
utils.Fatalf("encountered an error calling the RPC endpoint while listing mounts: %v", err)
}
if len(mf) == 0 {
fmt.Print("Could not found any swarmfs mounts. Please make sure you've specified the correct RPC endpoint\n")
} else {
fmt.Printf("Found %d swarmfs mount(s):\n", len(mf))
for i, mountInfo := range mf {
fmt.Printf("%d:\n", i)
fmt.Printf("\tMount point: %s\n", mountInfo.MountPoint)
fmt.Printf("\tLatest Manifest: %s\n", mountInfo.LatestManifest)
fmt.Printf("\tStart Manifest: %s\n", mountInfo.StartManifest)
}
}
}
func dialRPC(ctx *cli.Context) (*rpc.Client, error) {
var endpoint string
if ctx.IsSet(utils.IPCPathFlag.Name) {
endpoint = ctx.String(utils.IPCPathFlag.Name)
} else {
utils.Fatalf("swarm ipc endpoint not specified")
}
if endpoint == "" {
endpoint = node.DefaultIPCEndpoint(clientIdentifier)
} else if strings.HasPrefix(endpoint, "rpc:") || strings.HasPrefix(endpoint, "ipc:") {
// Backwards compatibility with geth < 1.5 which required
// these prefixes.
endpoint = endpoint[4:]
}
return rpc.Dial(endpoint)
}
