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export.go
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export.go
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package main
import (
"context"
"flag"
"fmt"
"io"
"os"
"github.com/peterbourgon/ff/v3/ffcli"
"berty.tech/berty/v2/go/pkg/bertymessenger"
)
func exportCommand() *ffcli.Command {
var exportPath *string
fsBuilder := func() (*flag.FlagSet, error) {
fs := flag.NewFlagSet("berty export", flag.ExitOnError)
fs.String("config", "", "config file (optional)")
manager.SetupLoggingFlags(fs) // also available at root level
manager.SetupLocalMessengerServerFlags(fs) // by default, start a new local messenger server,
manager.SetupRemoteNodeFlags(fs) // but allow to set a remote server instead
exportPath = fs.String("export-path", "", "path of the export tarball")
return fs, nil
}
return &ffcli.Command{
Name: "export",
ShortUsage: "berty [global flags] export [flags]",
ShortHelp: "export messenger data from the specified berty node",
FlagSetBuilder: fsBuilder,
Options: ffSubcommandOptions(),
UsageFunc: usageFunc,
Exec: func(ctx context.Context, args []string) error {
if len(args) > 0 {
return flag.ErrHelp
}
if exportPath == nil || *exportPath == "" {
return fmt.Errorf("no export path specified")
}
manager.DisableIPFSNetwork()
// messenger
messenger, err := manager.GetMessengerClient()
if err != nil {
return err
}
f, err := os.Create(*exportPath)
if err != nil {
return err
}
defer func() { _ = f.Close() }()
cl, err := messenger.InstanceExportData(ctx, &bertymessenger.InstanceExportData_Request{})
if err != nil {
return err
}
for {
chunk, err := cl.Recv()
if err != nil {
if err == io.EOF {
return nil
}
return err
}
if _, err := f.Write(chunk.ExportedData); err != nil {
return err
}
}
},
}
}