prysm-pulse/tools/interop/export-genesis/main.go
terencechain d17996f8b0
Update to V4 🚀 (#12134)
* Update V3 from V4

* Fix build v3 -> v4

* Update ssz

* Update beacon_chain.pb.go

* Fix formatter import

* Update update-mockgen.sh comment to v4

* Fix conflicts. Pass build and tests

* Fix test
2023-03-17 18:52:56 +00:00

49 lines
1012 B
Go

package main
import (
"context"
"fmt"
"os"
"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
"github.com/prysmaticlabs/prysm/v4/io/file"
)
// A basic tool to extract genesis.ssz from existing beaconchain.db.
// ex:
//
// bazel run //tools/interop/export-genesis:export-genesis -- /tmp/data/beaconchaindata /tmp/genesis.ssz
func main() {
if len(os.Args) < 3 {
fmt.Println("Usage: ./main /path/to/datadir /path/to/output/genesis.ssz")
os.Exit(1)
}
fmt.Printf("Reading db at %s and writing ssz output to %s.\n", os.Args[1], os.Args[2])
d, err := db.NewDB(context.Background(), os.Args[1])
if err != nil {
panic(err)
}
defer func() {
if err := d.Close(); err != nil {
panic(err)
}
}()
gs, err := d.GenesisState(context.Background())
if err != nil {
panic(err)
}
if gs == nil || gs.IsNil() {
panic("nil genesis state")
}
b, err := gs.MarshalSSZ()
if err != nil {
panic(err)
}
if err := file.WriteFile(os.Args[2], b); err != nil {
panic(err)
}
fmt.Println("done")
}