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lbcdblocknotify: support --run to execute custom command

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This commit is contained in:
Roy Lee 2022-08-07 23:03:33 -07:00
parent e323751218
commit a9351b3e3a
1 changed files with 52 additions and 22 deletions
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74
rpcclient/examples/lbcdblocknotify/main.go
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@ -5,19 +5,69 @@
package main
import (
"errors"
"flag"
"fmt"
"io/ioutil"
"log"
"net"
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/lbryio/lbcd/rpcclient"
"github.com/lbryio/lbcd/wire"
"github.com/lbryio/lbcutil"
)
func send(stratum, stratumPass, coinid, blockHash string) error {
var (
coinid = flag.String("coinid", "1425", "Coin ID")
stratum = flag.String("stratum", "", "Stratum server")
stratumPass = flag.String("stratumpass", "", "Stratum server password")
rpcserver = flag.String("rpcserver", "localhost:9245", "LBCD RPC server")
rpcuser = flag.String("rpcuser", "rpcuser", "LBCD RPC username")
rpcpass = flag.String("rpcpass", "rpcpass", "LBCD RPC password")
notls = flag.Bool("notls", false, "Connect to LBCD with TLS disabled")
run = flag.String("run", "", "Run custom shell command")
)
func onFilteredBlockConnected(height int32, header *wire.BlockHeader, txns []*lbcutil.Tx) {
blockHash := header.BlockHash().String()
log.Printf("Block connected: %v (%d) %v", blockHash, height, header.Timestamp)
if cmd := *run; len(cmd) != 0 {
cmd = strings.ReplaceAll(cmd, "%s", blockHash)
err := execCustomCommand(cmd)
if err != nil {
log.Printf("ERROR: execCustomCommand: %s", err)
}
}
if len(*stratum) > 0 && len(*stratumPass) > 0 {
err := stratumUpdateBlock(*stratum, *stratumPass, *coinid, blockHash)
if err != nil {
log.Printf("ERROR: stratumUpdateBlock: %s", err)
}
}
}
func execCustomCommand(cmd string) error {
strs := strings.Split(cmd, " ")
path, err := exec.LookPath(strs[0])
if errors.Is(err, exec.ErrDot) {
err = nil
}
if err != nil {
return err
}
c := exec.Command(path, strs[1:]...)
c.Stdout = os.Stdout
return c.Run()
}
func stratumUpdateBlock(stratum, stratumPass, coinid, blockHash string) error {
addr, err := net.ResolveTCPAddr("tcp", stratum)
if err != nil {
return fmt.Errorf("can't resolve addr: %w", err)
@ -39,32 +89,12 @@ func send(stratum, stratumPass, coinid, blockHash string) error {
return nil
}
func main() {
var (
coinid = flag.String("coinid", "1425", "Coin ID")
stratum = flag.String("stratum", "lbrypool.net:3334", "Stratum server")
stratumPass = flag.String("stratumpass", "password", "Stratum server password")
rpcserver = flag.String("rpcserver", "localhost:9245", "LBCD RPC server")
rpcuser = flag.String("rpcuser", "rpcuser", "LBCD RPC username")
rpcpass = flag.String("rpcpass", "rpcpass", "LBCD RPC password")
notls = flag.Bool("notls", false, "Connect to LBCD with TLS disabled")
)
flag.Parse()
ntfnHandlers := rpcclient.NotificationHandlers{
OnFilteredBlockConnected: func(height int32, header *wire.BlockHeader, txns []*lbcutil.Tx) {
blockHash := header.BlockHash().String()
log.Printf("Block connected: %v (%d) %v", blockHash, height, header.Timestamp)
if err := send(*stratum, *stratumPass, *coinid, blockHash); err != nil {
log.Printf("ERROR: failed to notify stratum: %s", err)
}
},
OnFilteredBlockConnected: onFilteredBlockConnected,
}
// Connect to local lbcd RPC server using websockets.