/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ethereum.net.eth.message;
import org.ethereum.core.Transaction;
import org.ethereum.util.RLP;
import org.ethereum.util.RLPList;
import java.util.ArrayList;
import java.util.List;
/**
* Wrapper around an Ethereum Transactions message on the network
*
* @see EthMessageCodes#TRANSACTIONS
*/
public class TransactionsMessage extends EthMessage {
private List<Transaction> transactions;
public TransactionsMessage(byte[] encoded) {
super(encoded);
}
public TransactionsMessage(Transaction transaction) {
transactions = new ArrayList<>();
transactions.add(transaction);
parsed = true;
}
public TransactionsMessage(List<Transaction> transactionList) {
this.transactions = transactionList;
parsed = true;
}
private synchronized void parse() {
if (parsed) return;
RLPList paramsList = (RLPList) RLP.decode2(encoded).get(0);
transactions = new ArrayList<>();
for (int i = 0; i < paramsList.size(); ++i) {
RLPList rlpTxData = (RLPList) paramsList.get(i);
Transaction tx = new Transaction(rlpTxData.getRLPData());
transactions.add(tx);
}
parsed = true;
}
private void encode() {
List<byte[]> encodedElements = new ArrayList<>();
for (Transaction tx : transactions)
encodedElements.add(tx.getEncoded());
byte[][] encodedElementArray = encodedElements.toArray(new byte[encodedElements.size()][]);
this.encoded = RLP.encodeList(encodedElementArray);
}
@Override
public byte[] getEncoded() {
if (encoded == null) encode();
return encoded;
}
public List<Transaction> getTransactions() {
parse();
return transactions;
}
@Override
public EthMessageCodes getCommand() {
return EthMessageCodes.TRANSACTIONS;
}
@Override
public Class<?> getAnswerMessage() {
return null;
}
public String toString() {
parse();
final StringBuilder sb = new StringBuilder();
if (transactions.size() < 4) {
for (Transaction transaction : transactions)
sb.append("\n ").append(transaction.toString(128));
} else {
for (int i = 0; i < 3; i++) {
sb.append("\n ").append(transactions.get(i).toString(128));
}
sb.append("\n ").append("[Skipped ").append(transactions.size() - 3).append(" transactions]");
}
return "[" + getCommand().name() + " num:"
+ transactions.size() + " " + sb.toString() + "]";
}
}