public void ReadAndWriteStreamAllUncommitted()
{
AddValidBlocksWithForkAllUncommitted();
var stream = new MemoryStream();
var writer = new BinaryWriter(stream);
var reader = new BinaryReader(stream);
BlockchainSerializer.WriteTo(writer, _chain);
stream.Seek(0, 0);
SimpleBlockchain newChain = BlockchainSerializer.ReadFrom(reader);
Assert.Equal(_1, newChain.RetrieveAlias(_tmpId1));
Assert.Equal(_2, newChain.RetrieveAlias(_tmpId2));
Assert.Equal(_3, newChain.RetrieveAlias(_tmpId3));
Assert.Equal(_4, newChain.RetrieveAlias(_tmpId4));
Assert.True(newChain.RetrieveUncommittedBlock(_1, out var oneBlock));
Assert.True(newChain.RetrieveUncommittedBlock(_2, out var twoBlock));
Assert.True(newChain.RetrieveUncommittedBlock(_3, out var threeBlock));
Assert.True(newChain.RetrieveUncommittedBlock(_4, out var fourBlock));
Assert.Equal(_tmpId1, oneBlock.BlockId);
Assert.Equal(_tmpId2, twoBlock.BlockId);
Assert.Equal(_tmpId3, threeBlock.BlockId);
Assert.Equal(_tmpId4, fourBlock.BlockId);
Assert.Equal(2, _chain.BlockchainHeight);
}
public void RetrieveBlock()
{
AddValidBlocksWithForkAllUncommitted();
Assert.True(_chain.RetrieveUncommittedBlock(_1, out var genesisBlockU));
Assert.True(_chain.RetrieveUncommittedBlock(_2, out var firstBlockU));
Assert.True(_chain.RetrieveUncommittedBlock(_3, out var secondBlockU));
Assert.True(_chain.RetrieveUncommittedBlock(_4, out var forkU));
Assert.Equal(_tmpId1, genesisBlockU.BlockId);
Assert.Equal(_tmpId2, firstBlockU.BlockId);
Assert.Equal(_tmpId3, secondBlockU.BlockId);
Assert.Equal(_tmpId4, forkU.BlockId);
Assert.Equal(_1, firstBlockU.Parent);
Assert.Equal(_2, secondBlockU.Parent);
Assert.Equal(_2, forkU.Parent);
Assert.Equal(0, genesisBlockU.BlockHeight);
Assert.Equal(1, firstBlockU.BlockHeight);
Assert.Equal(2, secondBlockU.BlockHeight);
Assert.Equal(2, forkU.BlockHeight);
_chain.CommitBlock(_1, BlockId.Genesis);
_chain.CommitBlock(_2, _hash1);
_chain.CommitBlock(_3, _hash2);
_chain.CommitBlock(_4, _hash3);
Assert.True(_chain.RetrieveCommittedBlock(_1, out var genesisBlock));
Assert.True(_chain.RetrieveCommittedBlock(_2, out var firstBlock));
Assert.True(_chain.RetrieveCommittedBlock(_3, out var secondBlock));
Assert.True(_chain.RetrieveCommittedBlock(_4, out var fork));
Assert.Equal(BlockId.Genesis, genesisBlock.BlockId);
Assert.Equal(_hash1, firstBlock.BlockId);
Assert.Equal(_hash2, secondBlock.BlockId);
Assert.Equal(_hash3, fork.BlockId);
Assert.Equal(_1, firstBlock.Parent);
Assert.Equal(_2, secondBlock.Parent);
Assert.Equal(_2, fork.Parent);
Assert.Equal(0, genesisBlock.BlockHeight);
Assert.Equal(1, firstBlock.BlockHeight);
Assert.Equal(2, secondBlock.BlockHeight);
Assert.Equal(2, fork.BlockHeight);
}
public void DoWork()
// TODO: [vermorel] method should return 'true' if any work has been done
{
var nextMessage = _inbox.Peek();
if (nextMessage.Length != 0)
{
// get message type and deserialize accordingly
var reqType = ClientServerMessage.GetMessageType(nextMessage);
switch (reqType)
{
// TODO: [vermorel] I don't like to too much the code below, it's highly repetitive, factorization is needed.
case MessageType.OpenBlock:
var openBlock = MessageSerializers.DeserializeOpenBlock(nextMessage);
UncommittedBlock block;
if (openBlock.ParentHandle == BlockAlias.GenesisParent && _chain.BlockchainLength == 0)
{
block = _chain.OpenFirstBlock();
}
else
{
block = _chain.OpenBlock(openBlock.ParentHandle);
}
var blockHandle =
new OpenedBlock(openBlock.RequestId, openBlock.ClientId, block.BlockId, block.Alias);
MessageSerializers.SerializeOpenedBlock(blockHandle, _responseBuffer);
_outbox.TryWrite(new Span <byte>(_responseBuffer, 0, OpenedBlock.SizeInBytes));
break;
case MessageType.GetBlockHandle:
var getBlockHandle = MessageSerializers.DeserializeGetBlockHandle(nextMessage);
var retrievedHandle = _chain.RetrieveAlias(getBlockHandle.BlockId);
var returnMessage = new BlockHandleResponse(getBlockHandle.RequestId, getBlockHandle.ClientId,
retrievedHandle);
MessageSerializers.SerializeBlockHandleResponse(returnMessage, _responseBuffer);
_outbox.TryWrite(new Span <byte>(_responseBuffer, 0, BlockHandleResponse.SizeInBytes));
break;
case MessageType.GetUncommittedBlockHandle:
var getUBlockHandle = MessageSerializers.DeserializeGetUncommittedBlockHandle(nextMessage);
var retrievedUHandle = _chain.RetrieveAlias(getUBlockHandle.UncommittedBlockId);
var returnMes = new BlockHandleResponse(getUBlockHandle.RequestId, getUBlockHandle.ClientId,
retrievedUHandle);
MessageSerializers.SerializeBlockHandleResponse(returnMes, _responseBuffer);
_outbox.TryWrite(new Span <byte>(_responseBuffer, 0, BlockHandleResponse.SizeInBytes));
break;
case MessageType.CommitBlock:
var commitBlock = MessageSerializers.DeserializeCommitBlock(nextMessage);
_chain.CommitBlock(commitBlock.BlockHandle, commitBlock.BlockId);
var committedMessage =
new EverythingOkResponse(commitBlock.RequestId, commitBlock.ClientId);
MessageSerializers.SerializeEverythingOk(committedMessage, _responseBuffer);
_outbox.TryWrite(new Span <byte>(_responseBuffer, 0, EverythingOkResponse.SizeInBytes));
break;
case MessageType.IsAncestor:
var isAncestor = MessageSerializers.DeserializeIsAncestor(nextMessage);
var res = _opti.IsAncestor(isAncestor.BlockHandle, isAncestor.MaybeAncestorHandle);
var isAncestorMessage = new AncestorResponse(isAncestor.RequestId, isAncestor.ClientId, res);
MessageSerializers.SerializeAncestorResponse(isAncestorMessage, _responseBuffer);
_outbox.TryWrite(new Span <byte>(_responseBuffer, 0, AncestorResponse.SizeInBytes));
break;
case MessageType.IsPruneable:
var isPruneable = MessageSerializers.DeserializeIsPruneable(nextMessage);
var result = _opti.IsPruneable(isPruneable.BlockHandle);
var isPruneableMessage = new PruneableResponse(isPruneable.RequestId, isPruneable.ClientId, result);
MessageSerializers.SerializePruneableResponse(isPruneableMessage, _responseBuffer);
_outbox.TryWrite(new Span <byte>(_responseBuffer, 0, PruneableResponse.SizeInBytes));
break;
case MessageType.GetBlockInfo:
var blockInfoReq = MessageSerializers.DeserializeGetBlockInfo(nextMessage);
// TODO: [vermorel] clarify the purpose of this test, unclear
if (_chain.RetrieveCommittedBlock(blockInfoReq.BlockHandle, out var blockInfoC))
{
var blockInfo =
new CommittedBlockInformation(blockInfoReq.RequestId, blockInfoReq.ClientId,
blockInfoC.BlockId, blockInfoC.Alias, blockInfoC.BlockHeight, blockInfoC.Parent);
MessageSerializers.SerializeCommittedBlockInfo(blockInfo, _responseBuffer);
_outbox.TryWrite(new Span <byte>(_responseBuffer, 0, CommittedBlockInformation.SizeInBytes));
break;
}
else
{
_chain.RetrieveUncommittedBlock(blockInfoReq.BlockHandle, out var blockInfoU);
var blockInfo =
new UncommittedBlockInformation(blockInfoReq.RequestId, blockInfoReq.ClientId,
blockInfoU.BlockId, blockInfoU.Alias, blockInfoU.BlockHeight, blockInfoU.Parent);
MessageSerializers.SerializeUncommittedBlockInfo(blockInfo, _responseBuffer);
_outbox.TryWrite(new Span <byte>(_responseBuffer, 0, UncommittedBlockInformation.SizeInBytes));
break;
}
// TODO: [vermorel] the 'default:' case should be covered with an NotSupportedException.
}
_inbox.Next();
// TODO: errors are not yet handled.
}
}