public async Task <IFileSystemNode> AddAsync(Stream stream,
string name,
AddFileOptions options,
CancellationToken cancel)
{
options ??= new AddFileOptions();
// TODO: various options
if (options.Trickle)
{
throw new NotImplementedException("Trickle");
}
var blockService = GetBlockService(options);
var chunker = new SizeChunker();
var nodes = await chunker.ChunkAsync(stream, name, options, blockService, _keyApi, cancel)
.ConfigureAwait(false);
// Multiple nodes for the file?
var node = await BuildTreeAsync(nodes, options, cancel);
// Wrap in directory?
if (options.Wrap)
{
var link = node.ToLink(name);
var wlinks = new[]
{
link
};
node = await CreateDirectoryAsync(wlinks, options, cancel).ConfigureAwait(false);
}
else
{
node.Name = name;
}
// Advertise the root node.
if (options.Pin && _dfsState.IsStarted)
{
await _dhtApi.ProvideAsync(node.Id, advertise : true, cancel : cancel).ConfigureAwait(false);
}
// Return the file system node.
return(node);
}
public async Task <Cid> PutAsync(byte[] data,
string contentType = Cid.DefaultContentType,
string multiHash = MultiHash.DefaultAlgorithmName,
string encoding = MultiBase.DefaultAlgorithmName,
bool pin = false,
CancellationToken cancel = default)
{
if (data.Length > _dfsOptions.Block.MaxBlockSize)
{
throw new ArgumentOutOfRangeException($"data.Length",
$@"Block length can not exceed {_dfsOptions.Block.MaxBlockSize.ToString()}.");
}
// Small enough for an inline CID?
if (_dfsOptions.Block.AllowInlineCid && data.Length <= _dfsOptions.Block.InlineCidLimit)
{
return(new Cid
{
ContentType = contentType,
Hash = MultiHash.ComputeHash(data, "identity")
});
}
// CID V1 encoding defaulting to base32 which is not
var cid = new Cid
{
ContentType = contentType,
Hash = MultiHash.ComputeHash(data, multiHash)
};
if (encoding != "base58btc")
{
cid.Encoding = encoding;
}
var block = new DataBlock
{
DataBytes = data,
Id = cid,
Size = data.Length
};
if (await Store.ExistsAsync(cid, cancel).ConfigureAwait(false))
{
Log.DebugFormat("Block '{0}' already present", cid);
}
else
{
await Store.PutAsync(cid, block, cancel).ConfigureAwait(false);
if (_dfsState.IsStarted)
{
await _dhtApi.ProvideAsync(cid, false, cancel).ConfigureAwait(false);
}
Log.DebugFormat("Added block '{0}'", cid);
}
// Inform the BitSwap service.
_bitSwapApi.FoundBlock(block);
// To pin or not.
if (pin)
{
await PinApi.AddAsync(cid, false, cancel).ConfigureAwait(false);
}
else
{
await PinApi.RemoveAsync(cid, false, cancel).ConfigureAwait(false);
}
return(cid);
}