forked from 13083718335/bsvd
-
Notifications
You must be signed in to change notification settings - Fork 0
/
fetchblock.go
62 lines (52 loc) · 1.49 KB
/
fetchblock.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
// 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/bitcoinsv/bsvd/chaincfg/chainhash"
"github.com/bitcoinsv/bsvd/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>"
}