internal static void Load(Msg_LD_Load msg, MyAction<Msg_DL_LoadResult> callback)
{
Msg_DL_LoadResult ret = new Msg_DL_LoadResult();
ret.MsgId = msg.MsgId;
ret.PrimaryKeys.AddRange(msg.PrimaryKeys);
ret.SerialNo = msg.SerialNo; ;
ret.ErrorNo = Msg_DL_LoadResult.ErrorNoEnum.Success;
if (DataCacheConfig.IsPersistent) {
try {
for (int i = 0; i < msg.LoadRequests.Count; ++i) {
Msg_LD_SingleLoadRequest req = msg.LoadRequests[i];
switch (req.LoadType) {
case Msg_LD_SingleLoadRequest.LoadTypeEnum.LoadAll: {
int start = req.Start;
int count = req.Count;
List<GeneralRecordData> datas = DataDML.LoadAll(req.MsgId, start, count);
foreach (GeneralRecordData data in datas) {
Msg_DL_SingleRowResult result = new Msg_DL_SingleRowResult();
result.MsgId = req.MsgId;
result.PrimaryKeys.AddRange(data.PrimaryKeys);
result.ForeignKeys.AddRange(data.ForeignKeys);
result.DataVersion = data.DataVersion;
result.Data = data.Data;
ret.Results.Add(result);
}
}
break;
case Msg_LD_SingleLoadRequest.LoadTypeEnum.LoadSingle: {
GeneralRecordData data = DataDML.LoadSingle(req.MsgId, req.Keys);
Msg_DL_SingleRowResult result = new Msg_DL_SingleRowResult();
result.MsgId = req.MsgId;
if (data != null) {
result.PrimaryKeys.AddRange(data.PrimaryKeys);
result.ForeignKeys.AddRange(data.ForeignKeys);
result.DataVersion = data.DataVersion;
result.Data = data.Data;
} else {
result.PrimaryKeys.AddRange(msg.PrimaryKeys);
result.ForeignKeys.Clear();
result.DataVersion = -1;
result.Data = null;
ret.ErrorNo = Msg_DL_LoadResult.ErrorNoEnum.NotFound;
}
ret.Results.Add(result);
}
break;
case Msg_LD_SingleLoadRequest.LoadTypeEnum.LoadMulti: {
List<GeneralRecordData> dataList = DataDML.LoadMulti(req.MsgId, req.Keys);
foreach (GeneralRecordData data in dataList) {
Msg_DL_SingleRowResult result = new Msg_DL_SingleRowResult();
result.MsgId = req.MsgId;
result.PrimaryKeys.AddRange(data.PrimaryKeys);
result.ForeignKeys.AddRange(data.ForeignKeys);
result.DataVersion = data.DataVersion;
result.Data = data.Data;
ret.Results.Add(result);
}
}
break;
}
}
} catch (Exception ex) {
ret.ErrorNo = Msg_DL_LoadResult.ErrorNoEnum.PostError;
ret.ErrorInfo = ex.Message;
LogSys.Log(LOG_TYPE.ERROR, ConsoleColor.Red, "Load data from mysql ERROR. MsgId:{0}, Key:{1}\nErrorMessage:{2}\nStackTrace:{3}",
msg.MsgId, msg.PrimaryKeys, ex.Message, ex.StackTrace);
} finally {
DataCacheSystem.Instance.QueueAction(callback, ret);
}
} else {
ret.ErrorNo = Msg_DL_LoadResult.ErrorNoEnum.NotFound;
ret.ErrorInfo = string.Empty;
DataCacheSystem.Instance.QueueAction(callback, ret);
}
}
//==========================通过QueueAction调用的方法===========================================
//注意!回调函数目前在缓存线程与db线程都可能调用，回调函数的实现需要是线程安全的(目前一般都是发消息，满足此条件)。
internal void Load(Msg_LD_Load msg, PBChannel channel, int handle)
{
//首先在缓存中查找数据,若未找到,则到DB中查找
bool isLoadCache = true;
Msg_DL_LoadResult ret = new Msg_DL_LoadResult();
ret.MsgId = msg.MsgId;
ret.PrimaryKeys.AddRange(msg.PrimaryKeys);
ret.SerialNo = msg.SerialNo;
ret.ErrorNo = 0;
for (int i = 0; i < msg.LoadRequests.Count; ++i) {
Msg_LD_SingleLoadRequest req = msg.LoadRequests[i];
KeyString loadKey = KeyString.Wrap(req.Keys);
switch (req.LoadType) {
case Msg_LD_SingleLoadRequest.LoadTypeEnum.LoadAll: {
isLoadCache = false;
}
break;
case Msg_LD_SingleLoadRequest.LoadTypeEnum.LoadSingle: {
InnerCacheItem item = m_InnerCacheSystem.Find(req.MsgId, loadKey);
if (item != null) {
Msg_DL_SingleRowResult result = new Msg_DL_SingleRowResult();
result.MsgId = req.MsgId;
result.PrimaryKeys.AddRange(req.Keys);
result.DataVersion = 0; //TODO: 这个DataVersion有用吗?
result.Data = item.DataMessage;
ret.Results.Add(result);
} else {
isLoadCache = false;
}
}
break;
case Msg_LD_SingleLoadRequest.LoadTypeEnum.LoadMulti: {
List<InnerCacheItem> itemList = m_InnerCacheSystem.FindByForeignKey(req.MsgId, loadKey);
foreach (var item in itemList) {
Msg_DL_SingleRowResult result = new Msg_DL_SingleRowResult();
result.MsgId = req.MsgId;
result.PrimaryKeys.AddRange(req.Keys);
result.DataVersion = 0; //TODO: 这个DataVersion有用吗?
result.Data = item.DataMessage;
ret.Results.Add(result);
}
}
break;
}
}
if (isLoadCache) {
channel.Send(ret);
LogSys.Log(LOG_TYPE.INFO, "Load data from cache. MsgId:{0}, Key:{1}", msg.MsgId, KeyString.Wrap(msg.PrimaryKeys).ToString());
} else {
//查找DB交给DBLoad线程操作
DbThreadManager.Instance.LoadActionQueue.QueueAction(DataLoadImplement.Load, msg, (MyAction<Msg_DL_LoadResult>)((Msg_DL_LoadResult result) => {
if (result.ErrorNo == Msg_DL_LoadResult.ErrorNoEnum.Success) {
foreach (Msg_DL_SingleRowResult row in result.Results) {
m_InnerCacheSystem.AddOrUpdate(row.MsgId, KeyString.Wrap(row.PrimaryKeys), KeyString.Wrap(row.ForeignKeys), row.Data);
}
}
channel.Send(result);
LogSys.Log(LOG_TYPE.INFO, "Load data from database. MsgId:{0}, Key:{1}", msg.MsgId, KeyString.Wrap(msg.PrimaryKeys).ToString());
}));
}
}
