Coverage Summary for Class: TxValidatorAccountBalanceValidator (co.rsk.net.handler.txvalidator)
Class |
Class, %
|
Method, %
|
Line, %
|
TxValidatorAccountBalanceValidator |
100%
(1/1)
|
100%
(2/2)
|
70%
(7/10)
|
1 /*
2 * This file is part of RskJ
3 * Copyright (C) 2017 RSK Labs Ltd.
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 package co.rsk.net.handler.txvalidator;
20
21 import co.rsk.core.Coin;
22 import co.rsk.net.TransactionValidationResult;
23 import org.ethereum.core.AccountState;
24 import org.ethereum.core.Transaction;
25
26 import javax.annotation.Nullable;
27 import java.math.BigInteger;
28
29 /**
30 * Checks if an account can pay the transaction execution cost
31 */
32 public class TxValidatorAccountBalanceValidator implements TxValidatorStep {
33
34 @Override
35 public TransactionValidationResult validate(Transaction tx, @Nullable AccountState state, BigInteger gasLimit, Coin minimumGasPrice, long bestBlockNumber, boolean isFreeTx) {
36 if (isFreeTx) {
37 return TransactionValidationResult.ok();
38 }
39
40 if (state == null) {
41 return TransactionValidationResult.withError("the sender account doesn't exist");
42 }
43
44 BigInteger txGasLimit = tx.getGasLimitAsInteger();
45 Coin maximumPrice = tx.getGasPrice().multiply(txGasLimit);
46 if (state.getBalance().compareTo(maximumPrice) >= 0) {
47 return TransactionValidationResult.ok();
48 }
49
50 return TransactionValidationResult.withError("insufficient funds");
51 }
52
53 }