50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
package parlia
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import (
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"context"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/common/math"
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"github.com/ethereum/go-ethereum/core/systemcontracts"
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"github.com/ethereum/go-ethereum/internal/ethapi"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/rpc"
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)
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func (p *Parlia) getCurrentValidatorsBeforeLuban(blockHash common.Hash, blockNumber *big.Int) ([]common.Address, error) {
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blockNr := rpc.BlockNumberOrHashWithHash(blockHash, false)
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// prepare different method
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method := "getValidators"
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if p.chainConfig.IsEuler(blockNumber) {
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method = "getMiningValidators"
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}
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ctx, cancel := context.WithCancel(context.Background())
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// cancel when we are finished consuming integers
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defer cancel()
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data, err := p.validatorSetABIBeforeLuban.Pack(method)
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if err != nil {
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log.Error("Unable to pack tx for getValidators", "error", err)
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return nil, err
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}
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// do smart contract call
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msgData := (hexutil.Bytes)(data)
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toAddress := common.HexToAddress(systemcontracts.ValidatorContract)
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gas := (hexutil.Uint64)(uint64(math.MaxUint64 / 2))
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result, err := p.ethAPI.Call(ctx, ethapi.TransactionArgs{
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Gas: &gas,
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To: &toAddress,
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Data: &msgData,
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}, blockNr, nil)
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if err != nil {
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return nil, err
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}
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var valSet []common.Address
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err = p.validatorSetABIBeforeLuban.UnpackIntoInterface(&valSet, method, result)
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return valSet, err
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}
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