/* * Copyright 2019 ConsenSys AG. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the * specific language governing permissions and limitations under the License. */ package tech.pegasys.ethsigner.core.requesthandler.sendtransaction.transaction; import tech.pegasys.ethsigner.core.jsonrpc.EeaSendTransactionJsonParameters; import tech.pegasys.ethsigner.core.jsonrpc.JsonRpcRequest; import tech.pegasys.ethsigner.core.jsonrpc.JsonRpcRequestId; import tech.pegasys.ethsigner.core.requesthandler.sendtransaction.NonceProvider; import java.math.BigInteger; import java.util.List; import com.google.common.base.MoreObjects; import org.web3j.crypto.Sign.SignatureData; import org.web3j.protocol.eea.crypto.PrivateTransactionEncoder; import org.web3j.protocol.eea.crypto.RawPrivateTransaction; import org.web3j.rlp.RlpEncoder; import org.web3j.rlp.RlpList; import org.web3j.rlp.RlpType; public abstract class PrivateTransaction implements Transaction { protected static final String JSON_RPC_METHOD = "eea_sendRawTransaction"; protected final JsonRpcRequestId id; protected final NonceProvider nonceProvider; protected BigInteger nonce; protected final EeaSendTransactionJsonParameters transactionJsonParameters; PrivateTransaction( final EeaSendTransactionJsonParameters transactionJsonParameters, final NonceProvider nonceProvider, final JsonRpcRequestId id) { this.transactionJsonParameters = transactionJsonParameters; this.nonceProvider = nonceProvider; this.id = id; this.nonce = transactionJsonParameters.nonce().orElse(null); } @Override public void updateNonce() { this.nonce = nonceProvider.getNonce(); } @Override public byte[] rlpEncode(final SignatureData signatureData) { final RawPrivateTransaction rawTransaction = createTransaction(); final List<RlpType> values = PrivateTransactionEncoder.asRlpValues(rawTransaction, signatureData); final RlpList rlpList = new RlpList(values); return RlpEncoder.encode(rlpList); } @Override public boolean isNonceUserSpecified() { return transactionJsonParameters.nonce().isPresent(); } @Override public String sender() { return transactionJsonParameters.sender(); } @Override public JsonRpcRequest jsonRpcRequest( final String signedTransactionHexString, final JsonRpcRequestId id) { return Transaction.jsonRpcRequest(signedTransactionHexString, id, JSON_RPC_METHOD); } @Override public JsonRpcRequestId getId() { return id; } @Override public String toString() { return MoreObjects.toStringHelper(this) .add("transactionJsonParameters", transactionJsonParameters) .add("id", id) .add("nonceProvider", nonceProvider) .add("nonce", nonce) .toString(); } protected abstract RawPrivateTransaction createTransaction(); }