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unstake.go
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unstake.go
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package unstaking
import (
"fmt"
"time"
"github.com/0xPolygon/polygon-edge/command"
"github.com/0xPolygon/polygon-edge/command/helper"
"github.com/0xPolygon/polygon-edge/command/polybftsecrets"
sidechainHelper "github.com/0xPolygon/polygon-edge/command/sidechain"
"github.com/0xPolygon/polygon-edge/consensus/polybft/contractsapi"
"github.com/0xPolygon/polygon-edge/contracts"
"github.com/0xPolygon/polygon-edge/txrelayer"
"github.com/0xPolygon/polygon-edge/types"
"github.com/spf13/cobra"
"github.com/umbracle/ethgo"
)
var params unstakeParams
func GetCommand() *cobra.Command {
unstakeCmd := &cobra.Command{
Use: "unstake",
Short: "Unstakes the amount sent for validator or undelegates amount from validator",
PreRunE: runPreRun,
RunE: runCommand,
}
helper.RegisterJSONRPCFlag(unstakeCmd)
setFlags(unstakeCmd)
return unstakeCmd
}
func setFlags(cmd *cobra.Command) {
cmd.Flags().StringVar(
¶ms.accountDir,
polybftsecrets.AccountDirFlag,
"",
polybftsecrets.AccountDirFlagDesc,
)
cmd.Flags().StringVar(
¶ms.accountConfig,
polybftsecrets.AccountConfigFlag,
"",
polybftsecrets.AccountConfigFlagDesc,
)
cmd.Flags().StringVar(
¶ms.amount,
sidechainHelper.AmountFlag,
"",
"amount to unstake from validator",
)
cmd.MarkFlagsMutuallyExclusive(polybftsecrets.AccountDirFlag, polybftsecrets.AccountConfigFlag)
}
func runPreRun(cmd *cobra.Command, _ []string) error {
params.jsonRPC = helper.GetJSONRPCAddress(cmd)
return params.validateFlags()
}
func runCommand(cmd *cobra.Command, _ []string) error {
outputter := command.InitializeOutputter(cmd)
defer outputter.WriteOutput()
validatorAccount, err := sidechainHelper.GetAccount(params.accountDir, params.accountConfig)
if err != nil {
return err
}
txRelayer, err := txrelayer.NewTxRelayer(txrelayer.WithIPAddress(params.jsonRPC),
txrelayer.WithReceiptTimeout(150*time.Millisecond))
if err != nil {
return err
}
unstakeFn := &contractsapi.UnstakeValidatorSetFn{
Amount: params.amountValue,
}
encoded, err := unstakeFn.EncodeAbi()
if err != nil {
return err
}
txn := ðgo.Transaction{
From: validatorAccount.Ecdsa.Address(),
Input: encoded,
To: (*ethgo.Address)(&contracts.ValidatorSetContract),
}
receipt, err := txRelayer.SendTransaction(txn, validatorAccount.Ecdsa)
if err != nil {
return err
}
if receipt.Status != uint64(types.ReceiptSuccess) {
return fmt.Errorf("unstake transaction failed on block: %d", receipt.BlockNumber)
}
var (
withdrawalRegisteredEvent contractsapi.WithdrawalRegisteredEvent
foundLog bool
)
result := &unstakeResult{
ValidatorAddress: validatorAccount.Ecdsa.Address().String(),
}
// check the logs to check for the result
for _, log := range receipt.Logs {
doesMatch, err := withdrawalRegisteredEvent.ParseLog(log)
if err != nil {
return err
}
if doesMatch {
foundLog = true
result.Amount = withdrawalRegisteredEvent.Amount.Uint64()
break
}
}
if !foundLog {
return fmt.Errorf("could not find an appropriate log in receipt that unstake happened (withdrawal registered)")
}
outputter.WriteCommandResult(result)
return nil
}