mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-07-27 23:26:44 +00:00
89 lines
2 KiB
Go
89 lines
2 KiB
Go
package cli
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import (
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"context"
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"fmt"
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"os"
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"os/signal"
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"syscall"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/internal/cli/flagset"
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"github.com/ethereum/go-ethereum/internal/cli/server/proto"
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)
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// ChainWatchCommand is the command to group the peers commands
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type ChainWatchCommand struct {
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*Meta2
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}
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// Help implements the cli.Command interface
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func (c *ChainWatchCommand) Help() string {
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return `Usage: bor chain watch
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This command is used to view the chainHead, reorg and fork events in real-time`
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}
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func (c *ChainWatchCommand) Flags() *flagset.Flagset {
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flags := c.NewFlagSet("chain watch")
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return flags
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}
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// Synopsis implements the cli.Command interface
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func (c *ChainWatchCommand) Synopsis() string {
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return "Watch the chainHead, reorg and fork events in real-time"
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}
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// Run implements the cli.Command interface
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func (c *ChainWatchCommand) Run(args []string) int {
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flags := c.Flags()
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if err := flags.Parse(args); err != nil {
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c.UI.Error(err.Error())
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return 1
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}
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borClt, err := c.BorConn()
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if err != nil {
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c.UI.Error(err.Error())
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return 1
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}
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sub, err := borClt.ChainWatch(context.Background(), &proto.ChainWatchRequest{})
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if err != nil {
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c.UI.Error(err.Error())
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return 1
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}
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signalCh := make(chan os.Signal, 1)
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signal.Notify(signalCh, os.Interrupt, syscall.SIGTERM)
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go func() {
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<-signalCh
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sub.CloseSend()
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}()
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for {
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msg, err := sub.Recv()
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if err != nil {
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// if err == EOF if finished on the other side
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c.UI.Output(err.Error())
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break
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}
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c.UI.Output(formatHeadEvent(msg))
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}
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return 0
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}
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func formatHeadEvent(msg *proto.ChainWatchResponse) string {
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var out string
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if msg.Type == core.Chain2HeadCanonicalEvent {
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out = fmt.Sprintf("Block Added : %v", msg.Newchain)
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} else if msg.Type == core.Chain2HeadForkEvent {
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out = fmt.Sprintf("New Fork Block : %v", msg.Newchain)
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} else if msg.Type == core.Chain2HeadReorgEvent {
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out = fmt.Sprintf("Reorg Detected \nAdded : %v \nRemoved : %v", msg.Newchain, msg.Oldchain)
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}
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return out
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}
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