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unbond_context.go
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/
unbond_context.go
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package contexts
import (
"fmt"
"math/big"
"github.com/klyed/hivesmartchain/acm/acmstate"
"github.com/klyed/hivesmartchain/acm/validator"
"github.com/klyed/hivesmartchain/execution/exec"
"github.com/klyed/hivesmartchain/logging"
"github.com/klyed/hivesmartchain/txs/payload"
)
type UnbondContext struct {
State acmstate.ReaderWriter
ValidatorSet validator.ReaderWriter
Logger *logging.Logger
tx *payload.UnbondTx
}
// Execute an UnbondTx to remove a validator
func (ctx *UnbondContext) Execute(txe *exec.TxExecution, p payload.Payload) error {
var ok bool
ctx.tx, ok = p.(*payload.UnbondTx)
if !ok {
return fmt.Errorf("payload must be UnbondTx, but is: %v", txe.Envelope.Tx.Payload)
}
if ctx.tx.Input.Address != ctx.tx.Output.Address {
return fmt.Errorf("input and output address must match")
}
power := new(big.Int).SetUint64(ctx.tx.Output.GetAmount())
account, err := ctx.State.GetAccount(ctx.tx.Input.Address)
if err != nil {
return err
}
err = account.AddToBalance(power.Uint64())
if err != nil {
return err
}
err = validator.SubtractPower(ctx.ValidatorSet, account.PublicKey, power)
if err != nil {
return err
}
return ctx.State.UpdateAccount(account)
}