public override void PersistedUploadHandler(PersistedSliceReader request, ErrnoResponseWriter response)
{
var dmc = DynamicMemoryCloud.Instance;
var uploader = dmc.m_persistent_storage.Upload(request.version, dmc.MyPartitionId, request.lowkey, request.highkey).Result;
var chunks = new[] { new ChunkInformation {
lowKey = request.lowkey, highKey = request.highkey, id = request.version
} };
var thres = DynamicClusterConfig.Instance.PersistedChunkSizeThreshold;
var tx_rsps = Global.LocalStorage
.Where(cell => _Covered(chunks, cell.CellId))
.Segment(thres, cell => cell.CellSize + sizeof(long) + sizeof(int) + sizeof(ushort))
.Select(_ => _Upload(_, uploader, thres));
Task.WhenAll(tx_rsps).Wait();
response.errno = Errno.E_OK;
}
public override void PersistedDownloadHandler(PersistedSliceReader request, ErrnoResponseWriter response)
{
var dmc = DynamicMemoryCloud.Instance;
var downloader = dmc.m_persistent_storage.Download(request.version, dmc.MyPartitionId, request.lowkey, request.highkey).Result;
Task <IPersistentDataChunk> dtask = downloader.DownloadAsync();
while (true)
{
var data = dtask?.Result;
if (data == null)
{
break; //fetched null from a task, EOF
}
// start new download while we load it into memory storage
var ndtask = downloader.DownloadAsync();
foreach (var cell in data)
{
Global.LocalStorage.SaveCell(cell.CellId, cell.Buffer, cell.Offset, cell.Length, cell.CellType);
}
dtask = ndtask;
}
response.errno = Errno.E_OK;
}
