public MerkleTree(string treeKey, IItemOperations <T> itemOperations, ICampfireNetObjectStore objectStore)
{
this.treeKey = treeKey;
this.itemOperations = itemOperations;
this.objectStore = objectStore;
TreeNamespace = $"net/trees/{treeKey}";
TreeContainmentNamespace = $"{TreeNamespace}/contains";
}
public static async Task <MerkleNode> ReadMerkleNodeAsync(this ICampfireNetObjectStore store, string ns, string hash)
{
var tryReadResult = await store.TryReadAsync(ns, hash).ConfigureAwait(false);
var tryReadSucceeded = tryReadResult.Item1;
if (!tryReadSucceeded)
{
return(null);
}
var objectData = tryReadResult.Item2;
using (var ms = new MemoryStream(objectData))
using (var reader = new BinaryReader(ms)) {
return(reader.ReadMerkleNode());
}
}
public static async Task <Tuple <bool, string> > TryWriteMerkleNodeAsync(this ICampfireNetObjectStore store, string ns, MerkleNode node)
{
using (var ms = new MemoryStream()) {
using (var writer = new BinaryWriter(ms, Encoding.UTF8, true)) {
writer.WriteMerkleNode(node);
}
var objectData = ms.GetBuffer();
var length = (int)ms.Position;
var hash = CampfireNetHash.ComputeSha256Base64(objectData, 0, length);
var isNewlyWritten = await store.TryWriteUniqueAsync(ns, hash, objectData).ConfigureAwait(false);
// var copy = await ReadMerkleNodeAsync(store, ns, hash).ConfigureAwait(false);
// if (copy.TypeTag != node.TypeTag || copy.LeftHash != node.LeftHash || copy.RightHash != node.RightHash || copy.Descendents != node.Descendents) {
// throw new InvalidStateException();
// }
return(Tuple.Create(isNewlyWritten, hash));
}
}
public ClientMerkleTreeFactory(BroadcastMessageSerializer broadcastMessageSerializer, ICampfireNetObjectStore objectStore)
{
this.broadcastMessageSerializer = broadcastMessageSerializer;
this.objectStore = objectStore;
}
