/// <summary>
/// 检查当前业务字段是否合法
/// </summary>
/// <param name="reqMsg">请求消息</param>
/// <param name="errorMsg">返回错误信息</param>
/// <returns>返回是否合法</returns>
protected override bool CheckDataFields(MetadataContainer reqMsg, out string errorMsg)
{
errorMsg = null;
if (!reqMsg.IsAttibuteExsits(0x0F))
{
errorMsg = "#CoinTypeId不存在";
}
else if (!reqMsg.IsAttibuteExsits(0x10))
{
errorMsg = "#PlatformId不存在";
}
return(errorMsg == null);
}
/// <summary>
/// 根据指定编号异步获取Ticker对象的操作
/// </summary>
/// <param name="coinType">币种编号</param>
/// <param name="platformType">平台编号</param>
/// <returns>返回执行结果</returns>
public async Task <IExecuteResult> GetTickerAsync(CoinTypes coinType, PlatformTypes platformType)
{
MetadataMessageTransaction transaction = SystemWorker.Instance.CreateMetadataTransaction("CoinAPI");
MetadataContainer reqMsg = new MetadataContainer();
reqMsg.SetAttribute(0x00, new MessageIdentityValueStored(new MessageIdentity
{
ProtocolId = 1,
ServiceId = 0,
DetailsId = 0
}));
reqMsg.SetAttribute(0x0F, new ByteValueStored((byte)coinType));
reqMsg.SetAttribute(0x10, new ByteValueStored((byte)platformType));
TaskCompletionSource <IExecuteResult> completionSource = new TaskCompletionSource <IExecuteResult>();
Task <IExecuteResult> task = completionSource.Task;
transaction.ResponseArrived += delegate(object sender, LightSingleArgEventArgs <MetadataContainer> e)
{
MetadataContainer rspMsg = e.Target;
completionSource.SetResult((!rspMsg.IsAttibuteExsits(0x0A))
? (rspMsg.GetAttribute(0x0F).GetValue <ResourceBlock>() == null
? ExecuteResult.Succeed(null)
: ExecuteResult.Succeed(ConverterFactory.GetTickerConverter().ConvertToDomainObject(rspMsg.GetAttribute(0x0F).GetValue <ResourceBlock>())))
: ExecuteResult.Fail(rspMsg.GetAttribute(0x0A).GetValue <byte>(), rspMsg.GetAttribute(0x0B).GetValue <string>()));
};
transaction.Timeout += delegate { completionSource.SetResult(ExecuteResult.Fail(SystemErrors.Timeout, string.Format("[Async Handle] Transaction: {0} execute timeout!", transaction.Identity))); };
transaction.Failed += delegate { completionSource.SetResult(ExecuteResult.Fail(SystemErrors.Unknown, string.Format("[Async Handle] Transaction: {0} execute failed!", transaction.Identity))); };
transaction.SendRequest(reqMsg);
return(await task);
}
static void MetadataNewTransaction(object sender, LightSingleArgEventArgs <IMessageTransaction <MetadataContainer> > e)
{
MetadataConnectionAgent agent = (MetadataConnectionAgent)sender;
IMessageTransaction <MetadataContainer> transaction = e.Target;
MetadataContainer reqMsg = transaction.Request;
Tuple <KAENetworkResource, ApplicationLevel> tag = new Tuple <KAENetworkResource, ApplicationLevel>((KAENetworkResource)agent.Tag, (reqMsg.IsAttibuteExsits(0x05) ? (ApplicationLevel)reqMsg.GetAttributeAsType <byte>(0x05) : ApplicationLevel.Stable));
MessageIdentity reqMsgIdentity = reqMsg.GetAttributeAsType <MessageIdentity>(0x00);
TransactionIdentity transactionIdentity = reqMsg.GetAttributeAsType <TransactionIdentity>(0x01);
Guid uniqueId = reqMsg.GetAttributeAsType <Guid>(0x03);
/*
* We always makes a checking on the Metadata protocol network communication.
* Because all of ours internal system communications are constructed by this kind of MSG protocol.
*/
if (reqMsgIdentity.ProtocolId >= 0xFC)
{
HandleSystemCommand(transaction);
}
//sends it to the appropriate application.
else
{
HandleBusiness(tag, (MetadataMessageTransaction)transaction, reqMsgIdentity, reqMsg, uniqueId, transactionIdentity);
}
}