private static byte[] putRequest(byte[] chainID, BigInteger requestID, CrossChainTxParameter para)
{
byte[] requestKey = requestPreifx.Concat(chainID).Concat(requestID.ToByteArray());
Storage.Put(Storage.CurrentContext, requestKey, WriteCrossChainTxParameter(para));
requestID = requestID + 1;
Storage.Put(Storage.CurrentContext, requestIDPrefix.Concat(chainID), requestID);
return(requestKey);
}
private static byte[] WriteCrossChainTxParameter(CrossChainTxParameter para)
{
byte[] result = new byte[] { };
result = writeVarBytes(result, para.txHash);
result = writeVarBytes(result, para.crossChainID);
result = writeVarBytes(result, para.fromContract);
byte[] toChainIDBytes = padRight(para.toChainID, 8);
result = result.Concat(toChainIDBytes);
result = writeVarBytes(result, para.toContract);
result = writeVarBytes(result, para.method);
result = writeVarBytes(result, para.args);
return(result);
}
/// <summary>
/// Tested, 反序列化跨链交易参数
/// </summary>
/// <param name="Source"></param>
/// <param name="offset"></param>
/// <returns></returns>
private static CrossChainTxParameter deserializCrossChainTxParameter(byte[] Source, int offset)
{
CrossChainTxParameter txParameter = new CrossChainTxParameter();
//get txHash
ByteString rawTxParameter;
(rawTxParameter, offset) = readVarBytes(Source, offset);
txParameter.txHash = (byte[])rawTxParameter;
//get crossChainId
ByteString rawCrossChainId;
(rawCrossChainId, offset) = readVarBytes(Source, offset);
txParameter.crossChainID = (byte[])rawCrossChainId;
//get fromContract
ByteString rawFromContract;
(rawFromContract, offset) = readVarBytes(Source, offset);
txParameter.fromContract = (byte[])rawFromContract;
//get toChainID
txParameter.toChainID = Source.Range(offset, 8);
offset = offset + 8;
//get toContract
ByteString rawToContract;
(rawToContract, offset) = readVarBytes(Source, offset);
txParameter.toContract = (byte[])rawToContract;
//get method
ByteString rawMethod;
(rawMethod, offset) = readVarBytes(Source, offset);
txParameter.method = (byte[])rawMethod;
//get params
ByteString rawArgs;
(rawArgs, offset) = readVarBytes(Source, offset);
txParameter.args = (byte[])rawArgs;
return(txParameter);
}
public static bool crossChain(BigInteger toChainID, byte[] toChainAddress, byte[] functionName, byte[] args, byte[] caller)
{
var tx = (Transaction)Runtime.ScriptContainer;
var IdAsByte = toChainID.ToByteArray();
CrossChainTxParameter para = new CrossChainTxParameter
{
toChainID = IdAsByte,
toContract = toChainAddress,
method = functionName,
args = args,
txHash = (byte[])tx.Hash,
crossChainID = (byte[])CryptoLib.Sha256((ByteString)((byte[])Runtime.ExecutingScriptHash).Concat((byte[])tx.Hash)),
fromContract = caller
};
BigInteger requestId = getRequestID(IdAsByte);
var resquestKey = putRequest(IdAsByte, requestId, para);
//event
CrossChainLockEvent(caller, para.fromContract, toChainID, resquestKey, para.args);
return(true);
}
