63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
// Copyright (c) 2015-2016 The btcsuite developers
|
|
// Use of this source code is governed by an ISC
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package main
|
|
|
|
import (
|
|
"encoding/hex"
|
|
"errors"
|
|
"time"
|
|
|
|
"github.com/lbryio/lbcd/chaincfg/chainhash"
|
|
"github.com/lbryio/lbcd/database"
|
|
)
|
|
|
|
// fetchBlockCmd defines the configuration options for the fetchblock command.
|
|
type fetchBlockCmd struct{}
|
|
|
|
var (
|
|
// fetchBlockCfg defines the configuration options for the command.
|
|
fetchBlockCfg = fetchBlockCmd{}
|
|
)
|
|
|
|
// Execute is the main entry point for the command. It's invoked by the parser.
|
|
func (cmd *fetchBlockCmd) Execute(args []string) error {
|
|
// Setup the global config options and ensure they are valid.
|
|
if err := setupGlobalConfig(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if len(args) < 1 {
|
|
return errors.New("required block hash parameter not specified")
|
|
}
|
|
blockHash, err := chainhash.NewHashFromStr(args[0])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Load the block database.
|
|
db, err := loadBlockDB()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer db.Close()
|
|
|
|
return db.View(func(tx database.Tx) error {
|
|
log.Infof("Fetching block %s", blockHash)
|
|
startTime := time.Now()
|
|
blockBytes, err := tx.FetchBlock(blockHash)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
log.Infof("Loaded block in %v", time.Since(startTime))
|
|
log.Infof("Block Hex: %s", hex.EncodeToString(blockBytes))
|
|
return nil
|
|
})
|
|
}
|
|
|
|
// Usage overrides the usage display for the command.
|
|
func (cmd *fetchBlockCmd) Usage() string {
|
|
return "<block-hash>"
|
|
}
|