mirror of
https://github.com/wealdtech/ethdo.git
synced 2026-01-08 21:48:05 -05:00
106 lines
3.1 KiB
Go
106 lines
3.1 KiB
Go
// Copyright © 2023 Weald Technology Trading.
|
|
// 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 validatorexit
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"fmt"
|
|
"os"
|
|
|
|
"github.com/pkg/errors"
|
|
"github.com/wealdtech/ethdo/beacon"
|
|
)
|
|
|
|
// obtainChainInfo obtains the chain information required to create an exit operation.
|
|
func (c *command) obtainChainInfo(ctx context.Context) error {
|
|
// Use the offline preparation file if present (and we haven't been asked to recreate it).
|
|
if !c.prepareOffline {
|
|
err := c.obtainChainInfoFromFile(ctx)
|
|
if err == nil {
|
|
return nil
|
|
}
|
|
}
|
|
|
|
if c.offline {
|
|
return fmt.Errorf("%s is unavailable or outdated; this is required to have been previously generated using --offline-preparation on an online machine and be readable in the directory in which this command is being run", offlinePreparationFilename)
|
|
}
|
|
|
|
if err := c.obtainChainInfoFromNode(ctx); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// obtainChainInfoFromFile obtains chain information from a pre-generated file.
|
|
func (c *command) obtainChainInfoFromFile(_ context.Context) error {
|
|
_, err := os.Stat(offlinePreparationFilename)
|
|
if err != nil {
|
|
if c.debug {
|
|
fmt.Fprintf(os.Stderr, "Failed to read offline preparation file: %v\n", err)
|
|
}
|
|
return errors.Wrap(err, fmt.Sprintf("cannot find %s", offlinePreparationFilename))
|
|
}
|
|
|
|
if c.debug {
|
|
fmt.Fprintf(os.Stderr, "%s found; loading chain state\n", offlinePreparationFilename)
|
|
}
|
|
data, err := os.ReadFile(offlinePreparationFilename)
|
|
if err != nil {
|
|
if c.debug {
|
|
fmt.Fprintf(os.Stderr, "failed to load chain state: %v\n", err)
|
|
}
|
|
return errors.Wrap(err, "failed to read offline preparation file")
|
|
}
|
|
c.chainInfo = &beacon.ChainInfo{}
|
|
if err := json.Unmarshal(data, c.chainInfo); err != nil {
|
|
if c.debug {
|
|
fmt.Fprintf(os.Stderr, "chain state invalid: %v\n", err)
|
|
}
|
|
return errors.Wrap(err, "failed to parse offline preparation file")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// obtainChainInfoFromNode obtains chain info from a beacon node.
|
|
func (c *command) obtainChainInfoFromNode(ctx context.Context) error {
|
|
if c.debug {
|
|
fmt.Fprintf(os.Stderr, "Populating chain info from beacon node\n")
|
|
}
|
|
|
|
var err error
|
|
c.chainInfo, err = beacon.ObtainChainInfoFromNode(ctx, c.consensusClient, c.chainTime)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// writeChainInfoToFile prepares for an offline run of this command by dumping
|
|
// the chain information to a file.
|
|
func (c *command) writeChainInfoToFile(_ context.Context) error {
|
|
data, err := json.Marshal(c.chainInfo)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := os.WriteFile(offlinePreparationFilename, data, 0600); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|