/// <summary>
/// 初始化缓存
/// </summary>
private void initDataCache()
{
try
{
long nLenSize = DataHelper.StructSize <DataLenNode>();
long nDataSize = DataHelper.StructSize <T>();
long mapCacheSize = this.mMaxDataCount * nDataSize + nLenSize;
var dbFilePath = string.Format("{0}/{1}.dat", YunMapCacheHelper.getMapCacheRoot(), this.mCacheFileName);
var mapName = string.Format("YunMapCache_{0}", this.mCacheFileName);
this.mMapFile = MemoryMappedFile.CreateFromFile(dbFilePath, FileMode.OpenOrCreate, mapName, mapCacheSize);
this.mMapStream = this.mMapFile.CreateViewStream();
//读取最后一个写入位置
this.mLastWriteKey = this.ReadLen();
YunLib.LogWriter.Log("YunMapCacheServer InitCache dbFilePath={0}", Path.GetFullPath(dbFilePath));
YunLib.LogWriter.Log("YunMapCacheServer InitCache mapName={0} Success,WriteLen={1}", mapName, this.mLastWriteKey);
Console.WriteLine("YunMapCacheServer InitCache dbFilePath={0}", Path.GetFullPath(dbFilePath));
Console.WriteLine("YunMapCacheServer InitCache mapName={0} Success,WriteLen={1}", mapName, this.mLastWriteKey);
}
catch (Exception ex)
{
YunLib.LogWriter.Log(ex.ToString());
}
}
/// <summary>
/// 彻底清理
/// </summary>
public void Destory()
{
this.Close();
try
{
var dbFilePath = string.Format("{0}/{1}.dat", YunMapCacheHelper.getMapCacheRoot(), this.mCacheFileName);
YunLib.LogWriter.Log("YunMapCacheServer Destory dbFilePath={0} Begin", dbFilePath);
if (File.Exists(dbFilePath))
{
dbFilePath = Path.GetFullPath(dbFilePath);
try
{
File.Delete(dbFilePath);
}
catch (Exception eex)
{
YunLib.LogWriter.Log(eex.Message);
}
}
YunLib.LogWriter.Log("YunMapCacheServer Destory dbFilePath={0} End", dbFilePath);
}
catch (Exception ex)
{
YunLib.LogWriter.Log(ex.ToString());
}
}
/// <summary>
/// 彻底清理
/// </summary>
public void Destory()
{
this.Close();
try
{
var dbFilePath = string.Format("{0}/{1}.dat", YunMapCacheHelper.getMapCacheRoot(), this.mCacheFileName);
if (File.Exists(dbFilePath))
{
dbFilePath = Path.GetFullPath(dbFilePath);
YunLib.LogWriter.Log("YunMapCacheClient Destory dbFilePath={0}", dbFilePath);
File.Delete(dbFilePath);
}
}
catch (Exception)
{
//YunLib.LogWriter.Log(ex.ToString());
}
}
/// <summary>
/// 获取存在的实例
/// </summary>
/// <param name="mLastDateStr"></param>
/// <param name="dbName"></param>
/// <param name="maxCount"></param>
/// <returns></returns>
private static T getExistsInstance(string mLastDateStr, string dbName, long maxCount)
{
T mInstance = new T();
mInstanceListLock.EnterReadLock();
try
{
string dataKey = YunMapCacheHelper.getInstanceName(mLastDateStr, dbName, maxCount);
if (mInstanceList.ContainsKey(dataKey))
{
mInstance = mInstanceList[dataKey];
}
}
catch (Exception ex)
{
YunLib.LogWriter.Log(ex.ToString());
}
mInstanceListLock.ExitReadLock();
return(mInstance);
}
private static void clearOutDateFile(string mLastDateStr)
{
YunLib.LogWriter.Log("YunMapCacheManager.clearOutDateFile Begin");
string fileDir = YunMapCacheHelper.getMapCacheRoot();
try
{
var fileList = Directory.GetFiles(fileDir);
foreach (string fileName in fileList)
{
if (fileName.Contains(mLastDateStr))
{
continue;
}
try
{
File.Delete(fileName);
}
catch (Exception eex)
{
YunLib.LogWriter.Log(eex.Message);
}
}
}
catch (Exception ex)
{
YunLib.LogWriter.Log(ex.ToString());
}
YunLib.LogWriter.Log("YunMapCacheManager.clearOutDateFile End");
}
/// <summary>
/// 获取一个新的实例
/// </summary>
/// <returns></returns>
private static T getNewInstance(string mLastDateStr, string dbName, long maxCount)
{
T mInstance = new T();
mInstanceListLock.EnterWriteLock();
try
{
string dataKey = YunMapCacheHelper.getInstanceName(mLastDateStr, dbName, maxCount);
//可能多个写锁触发,先判断
if (mInstanceList.ContainsKey(dataKey))
{
mInstance = mInstanceList[dataKey];
}
else
{
mInstance.InitCache(dataKey, maxCount);
if (mInstance.IsCacheValid())
{
mInstanceList.Add(dataKey, mInstance);
}
}
//清理过期数据缓存
clearOutDateCache(mLastDateStr);
}
catch (Exception ex)
{
YunLib.LogWriter.Log(ex.ToString());
}
mInstanceListLock.ExitWriteLock();
return(mInstance);
}
