public bool GetKeyExist(CacheKeyInfo keyInfo)
{
lock (this)
{
string realKey = string.Empty;
if (keyInfo.CacheKey.IsNativeFile)
{
realKey = keyInfo.GetRealKey();
}
else
{
realKey = keyInfo.GetRealKey() + ".cache";
}
bool saveDisk = keyInfo.CacheKey.SaveDiskPath != null;
if (saveDisk)
{
CacheIndex cacheIndex = cacheIndexManager.GetCacheIndex(realKey);
if (cacheIndex == null)
{
return(false);
}
string filePath = baseCacheDir + cacheIndex.CacheFilePath;
if (cacheIndex.ExpireTime > 0)
{
int now = (int)(TimeManager.Instance.Now / 1000);
//过期
if (now - cacheIndex.WriteTime >= cacheIndex.ExpireTime)
{
FileUtil.DeleteFile(filePath);
cacheIndexManager.RemoveCacheIndex(realKey);
return(false);
}
}
if (fileCache.ContainsKey(realKey))
{
return(true);
}
if (!File.Exists(filePath))
{
FileUtil.DeleteFile(filePath);
cacheIndexManager.RemoveCacheIndex(realKey);
return(false);
}
return(true);
}
else
{
return(localCache.ContainsKey(realKey));
}
}
}
/// <summary>
/// 加载索引文件
/// </summary>
public void LoadCacheIndex()
{
ByteBuffer buffer = FileUtil.ReadFileToByteArray(cacheIndexFilePath);
if(buffer != null)
{
while(buffer.ReadableBytes() > 0)
{
CacheIndex cacheIndex = new CacheIndex();
cacheIndex.Key = buffer.ReadString();
cacheIndex.WriteTime = buffer.ReadInt();
cacheIndex.ExpireTime = buffer.ReadInt();
cacheIndex.CacheFilePath = buffer.ReadString();
cacheIndexMap.Add(cacheIndex.Key, cacheIndex);
}
}
}
/// <summary>
/// 保存索引对象到磁盘
/// </summary>
public void Flush()
{
lock (this)
{
ByteBuffer buffer = ByteBuffer.Allocate(cacheIndexMap.Count() * 30);
foreach (KeyValuePair <string, CacheIndex> kv in cacheIndexMap)
{
CacheIndex cacheIndex = kv.Value;
buffer.WriteString(cacheIndex.Key);
buffer.WriteInt(cacheIndex.WriteTime);
buffer.WriteInt(cacheIndex.ExpireTime);
buffer.WriteString(cacheIndex.CacheFilePath);
}
FileUtil.WriteFile(cacheIndexFilePath, buffer.ToArray());
}
}
/// <summary>
/// 加载索引文件
/// </summary>
public void LoadCacheIndex()
{
ByteBuffer buffer = FileUtil.ReadFileToByteArray(cacheIndexFilePath);
if (buffer != null)
{
while (buffer.ReadableBytes() > 0)
{
CacheIndex cacheIndex = new CacheIndex();
cacheIndex.Key = buffer.ReadString();
cacheIndex.WriteTime = buffer.ReadInt();
cacheIndex.ExpireTime = buffer.ReadInt();
cacheIndex.CacheFilePath = buffer.ReadString();
cacheIndexMap.Add(cacheIndex.Key, cacheIndex);
}
}
}
public void AddCacheIndex(string key, string cacheFilePath, int expireTime)
{
lock (this)
{
if (cacheIndexMap.ContainsKey(key))
{
CacheIndex cacheIndex = cacheIndexMap[key];
cacheIndex.ExpireTime = expireTime;
cacheIndex.WriteTime = (int)(TimeManager.Instance.Now / 1000);
}
else
{
CacheIndex cacheIndex = new CacheIndex();
cacheIndex.Key = key;
cacheIndex.WriteTime = (int)(TimeManager.Instance.Now / 1000);
cacheIndex.ExpireTime = expireTime;
cacheIndex.CacheFilePath = cacheFilePath;
cacheIndexMap.Add(key, cacheIndex);
}
Flush();
}
}
public void AddCacheIndex(string key, string cacheFilePath, int expireTime)
{
lock (this)
{
if (cacheIndexMap.ContainsKey(key))
{
CacheIndex cacheIndex = cacheIndexMap[key];
cacheIndex.ExpireTime = expireTime;
cacheIndex.WriteTime = (int)(TimeManager.Instance.Now / 1000);
}
else
{
CacheIndex cacheIndex = new CacheIndex();
cacheIndex.Key = key;
cacheIndex.WriteTime = (int)(TimeManager.Instance.Now / 1000);
cacheIndex.ExpireTime = expireTime;
cacheIndex.CacheFilePath = cacheFilePath;
cacheIndexMap.Add(key, cacheIndex);
}
Flush();
}
}
public object Get(CacheKeyInfo keyInfo)
{
lock (this)
{
string realKey = string.Empty;
if (keyInfo.CacheKey.IsNativeFile)
{
realKey = keyInfo.GetRealKey();
}
else
{
realKey = keyInfo.GetRealKey() + ".cache";
}
bool saveDisk = keyInfo.CacheKey.SaveDiskPath != null;
if (saveDisk)
{
CacheIndex cacheIndex = cacheIndexManager.GetCacheIndex(realKey);
if (cacheIndex == null)
{
return(null);
}
string filePath = baseCacheDir + cacheIndex.CacheFilePath;
if (cacheIndex.ExpireTime > 0)
{
int now = (int)(TimeManager.Instance.Now / 1000);
//过期
if (now - cacheIndex.WriteTime >= cacheIndex.ExpireTime)
{
FileUtil.DeleteFile(filePath);
cacheIndexManager.RemoveCacheIndex(realKey);
return(null);
}
}
if (!fileCache.ContainsKey(realKey))
{
if (!File.Exists(filePath))
{
FileUtil.DeleteFile(filePath);
cacheIndexManager.RemoveCacheIndex(realKey);
return(null);
}
ByteBuffer buffer = FileUtil.ReadFileToByteArray(filePath);
if (buffer == null)
{
FileUtil.DeleteFile(filePath);
cacheIndexManager.RemoveCacheIndex(realKey);
return(null);
}
fileCache.Add(realKey, buffer.ToArray());
buffer.ResetReaderIndex();
}
return(TranscoderManager.Instance.Decode(keyInfo.CacheKey.Transcoder, fileCache[realKey], keyInfo.CacheKey.IsNativeFile));
}
else
{
if (!localCache.ContainsKey(realKey))
{
return(null);
}
return(localCache[realKey]);
}
}
}
