-
Notifications
You must be signed in to change notification settings - Fork 18
/
last-block.go
105 lines (87 loc) · 2.57 KB
/
last-block.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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
package commands
import (
"context"
"fmt"
"os"
"time"
coreConfig "code.vegaprotocol.io/vega/core/config"
"code.vegaprotocol.io/vega/datanode/config"
vgjson "code.vegaprotocol.io/vega/libs/json"
"code.vegaprotocol.io/vega/logging"
"code.vegaprotocol.io/vega/paths"
"github.com/cenkalti/backoff/v4"
"github.com/jackc/pgx/v4"
"github.com/jessevdk/go-flags"
)
type LastBlockCmd struct {
config.VegaHomeFlag
coreConfig.OutputFlag
*config.Config
Timeout time.Duration `long:"timeout" description:"Database connection timeout" default:"10s"`
}
var lastBlockCmd LastBlockCmd
func (cmd *LastBlockCmd) Execute(_ []string) error {
log := logging.NewLoggerFromConfig(logging.NewDefaultConfig())
defer log.AtExit()
vegaPaths := paths.New(cmd.VegaHome)
cfgLoader, err := config.InitialiseLoader(vegaPaths)
if err != nil {
return fmt.Errorf("couldn't initialise configuration loader: %w", err)
}
cmd.Config, err = cfgLoader.Get()
if err != nil {
handleErr(log, cmd.Output.IsJSON(), "couldn't load configuration", err)
os.Exit(1)
}
connectionString := cmd.Config.SQLStore.ConnectionConfig.GetConnectionString()
ctx, cancel := context.WithTimeout(context.Background(), cmd.Timeout)
defer cancel()
var conn *pgx.Conn
expBackoff := backoff.NewExponentialBackOff()
expBackoff.InitialInterval = time.Second
expBackoff.MaxInterval = time.Second
expBackoff.MaxElapsedTime = cmd.Timeout
// Retry the connect in case we have to wait for the database to start
err = backoff.Retry(func() (opErr error) {
conn, opErr = pgx.Connect(ctx, connectionString)
return opErr
}, expBackoff)
if err != nil {
handleErr(log, cmd.Output.IsJSON(), "Failed to connect to database", err)
os.Exit(1)
}
var lastBlock int64
err = conn.QueryRow(ctx, "select max(height) from blocks").Scan(&lastBlock)
if err != nil {
handleErr(log, cmd.Output.IsJSON(), "Failed to get last block", err)
os.Exit(1)
}
if cmd.Output.IsJSON() {
return vgjson.Print(struct {
LastBlock int64 `json:"last_block"`
}{
LastBlock: lastBlock,
})
}
log.Info("Last block", logging.Int64("height", lastBlock))
return nil
}
func LastBlock(ctx context.Context, parser *flags.Parser) error {
cfg := config.NewDefaultConfig()
lastBlockCmd = LastBlockCmd{
Config: &cfg,
}
_, err := parser.AddCommand("last-block", "Get last block", "Get last block", &lastBlockCmd)
return err
}
func handleErr(log *logging.Logger, outputJSON bool, msg string, err error) {
if outputJSON {
_ = vgjson.Print(struct {
Error string `json:"error"`
}{
Error: err.Error(),
})
} else {
log.Error(msg, logging.Error(err))
}
}