public Stream OpenFile(string name, string url, bool isData)
{
if (!Enabled)
{
return(null);
}
if (isData && !CacheData)
{
return(null);
}
string file = Path.Combine(_cachePath, name);
Logger.WriteLine("CDNCache: Opening file {0}", file);
FileInfo fi = new FileInfo(file);
if (!fi.Exists)
{
_downloader.DownloadFile(url, file);
}
if (Validate && !_validatedData.Contains(file))
{
CacheMetaData meta = CacheMetaData.Load(file) ?? _downloader.GetMetaData(url, file);
if (meta == null)
{
throw new Exception(string.Format("unable to validate file {0}", file));
}
bool sizeOk, md5Ok;
using (FileStream fs = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
sizeOk = fs.Length == meta.Size;
md5Ok = _md5.ComputeHash(fs).EqualsTo(meta.MD5);
}
if (sizeOk && md5Ok)
{
_validatedData.Add(file);
}
else
{
_downloader.DownloadFile(url, file);
}
}
return(new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite));
}
public MemoryStream OpenFile(string name, string url, bool isData)
{
if (!Enabled)
{
return(null);
}
if (isData && !CacheData)
{
return(null);
}
string file = Path.Combine(_cachePath, name);
FileInfo fi = new FileInfo(file);
if (!fi.Exists)
{
_downloader.DownloadFile(url, file);
}
if (Validate)
{
// CacheMetaData meta = CacheMetaData.Load(file) ?? _downloader.GetMetaData(url, file);
//
// if (meta == null)
// throw new Exception(string.Format("unable to validate file {0}", file));
//
// bool sizeOk, md5Ok;
//
// using (FileStream fs = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
// {
// sizeOk = fs.Length == meta.Size;
// md5Ok = _md5.ComputeHash(fs).EqualsTo(meta.MD5);
// }
//
// if (!sizeOk || !md5Ok)
// _downloader.DownloadFile(url, file);
}
MemoryStream ms = new MemoryStream();
using (FileStream fileStream = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
fileStream.CopyTo(ms);
return(ms);
}