public void TestCreate1ByteFile()
{
gridFS.Files.RemoveAll();
gridFS.Chunks.RemoveAll();
gridFS.Chunks.ResetIndexCache();
var fileInfo = gridFS.FindOne("test");
Assert.IsNull(fileInfo);
using (var stream = gridFS.Create("test"))
{
stream.WriteByte(1);
}
fileInfo = gridFS.FindOne("test");
Assert.IsTrue(fileInfo.Exists);
Assert.AreEqual(1, fileInfo.Length);
Assert.IsNotNull(fileInfo.MD5);
using (var stream = gridFS.OpenRead("test"))
{
var b = stream.ReadByte();
Assert.AreEqual(1, b);
b = stream.ReadByte();
Assert.AreEqual(-1, b); // EOF
}
}
public override Task <Stream> OpenAsync(string virtualPath, NameValueCollection queryString)
{
var _filename = virtualPath.Substring(VirtualFilesystemPrefix.Length);
//First try to get it by id, next by filename
if (_filename.StartsWith("id/", StringComparison.OrdinalIgnoreCase))
{
//Strip the extension and id/ prefix
var sid = PathUtils.RemoveFullExtension(_filename.Substring(3));
ObjectId id;
if (ObjectId.TryParse(sid, out id))
{
var file = _grid.FindOne(MongoDB.Driver.Builders.Query.EQ("_id", id));
if (file == null)
{
throw new FileNotFoundException("Failed to locate blob " + sid + " on GridFS.");
}
return(Task.FromResult <Stream>(file.OpenRead()));
}
}
return(Task.FromResult <Stream>(_grid.OpenRead(_filename)));
}
public Stream OpenFile(string virtualPath, bool readOnly = false)
{
string fixedPath = FixPath(virtualPath);
if (!FileExists(fixedPath) && !readOnly)
{
InternalWriteFile(fixedPath, new MemoryStream(new byte[0]));
}
MongoGridFS gridFs = GetGridFS();
if (readOnly)
{
return(gridFs.OpenRead(fixedPath));
}
MongoGridFSFileInfo fileInfo = gridFs.FindOne(fixedPath);
gridFs.SetMetadata(fileInfo, CreateMetadata(fixedPath, false));
return(gridFs.OpenWrite(fixedPath));
}
/// <summary>
/// 获取流
/// </summary>
/// <param name="remoteFile"></param>
/// <returns></returns>
public byte[] GetBytes(string remoteFile)
{
_logger.DebugFormat("Get Stream by Id {0}", remoteFile);
try
{
MongoGridFS fs = new MongoGridFS(_context.DataBase);
byte[] bytes;
using (MongoGridFSStream gfs = fs.OpenRead(remoteFile))
{
bytes = new Byte[gfs.Length];
gfs.Read(bytes, 0, bytes.Length);
}
return(bytes);
}
catch (Exception ex)
{
_logger.Error(ex.Message);
_logger.Error(ex.StackTrace);
throw;
}
}