private void AddGraphToChain(IGraph g, DateTime genesisDate)
{
GraphBlock graphBlock = new GraphBlock();
graphBlock.PoAHeader.AuthorityHash = uint256.One;
Encoding utf8Encoding = Encoding.UTF8;
byte[] graphBytes;
using (var s = new MemoryStream())
using (var sw = new StreamWriter(s))
{
g.SaveToStream(sw, new CompressingTurtleWriter());
graphBytes = s.ToArray();
}
GraphContent content = new GraphContent()
{
Version = 1,
Headers = new GraphContentHeaders(),
Graph = graphBytes
};
content.Headers.AddHeader("GraphFormat", "ttl");
graphBlock.AddGraph(content);
graphBlock.Header.Nonce = RandomUtils.GetUInt32();
graphBlock.Header.Version = 1;
graphBlock.Header.Time = (uint)(DateTime.UtcNow.Ticks - genesisDate.Ticks);
graphBlock.Header.HashPrevBlock = (_smallBlockChain.LastOrDefault()?.GetHash()) ?? uint256.Zero;
graphBlock.UpdateMerkleRoot();
Assert.NotEqual(graphBlock.Header.GetPoWHash(), uint256.Zero);
Assert.Equal(graphBlock.Header.HashMerkleRoot, graphBlock.GetMerkleRoot().Hash);
_smallBlockChain.Add(graphBlock);
}
private void LoadBlockChainFromStrings()
{
var genesisDate = DateTime.UtcNow;
var files = new DirectoryInfo(@"data\rdf\").GetFiles("*.ttl", SearchOption.TopDirectoryOnly);
_filesCount = files.Length;
fixture.StartWatch();
foreach (var file in files)
{
GraphBlock graphBlock = new GraphBlock();
graphBlock.PoAHeader.AuthorityHash = uint256.One;
var graphString = File.ReadAllText(file.FullName);
Encoding utf8Encoding = Encoding.UTF8;
var graphBytes = utf8Encoding.GetBytes(graphString);
GraphContent content = new GraphContent()
{
Version = 1,
Headers = new GraphContentHeaders(),
Graph = graphBytes
};
content.Headers.AddHeader("GraphFormat", "ttl");
graphBlock.AddGraph(content);
graphBlock.Header.Nonce = RandomUtils.GetUInt32();
graphBlock.Header.Version = 1;
graphBlock.Header.Time = (uint)(DateTime.UtcNow.Ticks - genesisDate.Ticks);
graphBlock.Header.HashPrevBlock = (_smallBlockChain.LastOrDefault()?.GetHash()) ?? uint256.Zero;
graphBlock.UpdateMerkleRoot();
Assert.NotEqual(graphBlock.Header.GetPoWHash(), uint256.Zero);
Assert.Equal(graphBlock.Header.HashMerkleRoot, graphBlock.GetMerkleRoot().Hash);
_smallBlockChain.Add(graphBlock);
}
fixture.Log("Loaded {0} graphs into {1} blocks. Elapsed time: {2} miliseconds.", "LoadBlockChain", _filesCount, _smallBlockChain.Count, fixture.StopWatch());
}
public void CanCalculateMerkleRoot_Complex()
{
GraphBlock graphBlock = new GraphBlock();
graphBlock.PoAHeader.AuthorityHash = uint256.One;
foreach (var file in new DirectoryInfo(@"data\rdf\").GetFiles())
{
var graphString = File.ReadAllText(file.FullName);
Encoding utf8Encoding = Encoding.UTF8;
var graphBytes = utf8Encoding.GetBytes(graphString);
GraphContent content = new GraphContent()
{
Version = 1,
Headers = new GraphContentHeaders(),
Graph = graphBytes
};
content.Headers.AddHeader("GraphFormat", "ttl");
graphBlock.AddGraph(content);
}
fixture.StartWatch();
graphBlock.UpdateMerkleRoot();
Assert.Equal(graphBlock.Header.HashMerkleRoot, graphBlock.GetMerkleRoot().Hash);
fixture.Log("Calculated merkle root hash for {0} graph's block. Elapsed time: {1} miliseconds.", "CanCalculateMerkleRoot_Complex", graphBlock.Graphs.Count, fixture.StopWatch());
}
public void CanCalculateMerkleRoot()
{
var graphString = File.ReadAllText(@"data\rdf\2594007XIACKNMUAW223.ttl");
var graphBytes = _utf8Encoding.GetBytes(graphString);
GraphBlock graphBlock = new GraphBlock();
graphBlock.PoAHeader.AuthorityHash = uint256.One;
GraphContent content = new GraphContent()
{
Version = 1,
Headers = new GraphContentHeaders(),
Graph = graphBytes
};
content.Headers.AddHeader("GraphFormat", "ttl");
graphBlock.AddGraph(content);
fixture.StartWatch();
graphBlock.UpdateMerkleRoot();
Assert.Equal(graphBlock.Header.HashMerkleRoot, graphBlock.GetMerkleRoot().Hash);
fixture.Log("Calculated merkle root hash for single graph's block. Elapsed time: {0} miliseconds.", "CanCalculateMerkleRoot", fixture.StopWatch());
}
private void LoadBlockChainFromGraphs()
{
var genesisDate = DateTime.UtcNow;
var files = new DirectoryInfo(@"data\rdf\").GetFiles("*.ttl", SearchOption.TopDirectoryOnly);
_filesCount = files.Length;
fixture.StartWatch();
foreach (var file in files)
{
GraphBlock graphBlock = new GraphBlock();
graphBlock.PoAHeader.AuthorityHash = uint256.One;
var graphString = File.ReadAllText(file.FullName);
IGraph graph = new Graph();
graph.BaseUri = new Uri(String.Format("graph://lei.info/{0}", Path.GetFileNameWithoutExtension(file.Name)));
graph.LoadFromString(graphString, new TurtleParser());
MemoryStream graphStream = new MemoryStream();
TextWriter writer = new StreamWriter(graphStream);
graph.SaveToStream(writer, new CompressingTurtleWriter());
var graphBytes = graphStream.ToArray();
GraphContent content = new GraphContent()
{
Version = 1,
Headers = new GraphContentHeaders(),
Graph = graphBytes
};
content.Headers.AddHeader("GraphFormat", "ttl");
graphBlock.AddGraph(content);
graphBlock.Header.Nonce = RandomUtils.GetUInt32();
graphBlock.Header.Version = 1;
graphBlock.Header.Time = (uint)(DateTime.UtcNow.Ticks - genesisDate.Ticks);
graphBlock.Header.HashPrevBlock = (_smallBlockChain.LastOrDefault()?.GetHash()) ?? uint256.Zero;
graphBlock.UpdateMerkleRoot();
Assert.NotEqual(graphBlock.Header.GetPoWHash(), uint256.Zero);
Assert.Equal(graphBlock.Header.HashMerkleRoot, graphBlock.GetMerkleRoot().Hash);
_smallBlockChain.Add(graphBlock);
}
fixture.Log("Loaded {0} graphs into {1} blocks. Elapsed time: {2} miliseconds.", "LoadBlockChain", _filesCount, _smallBlockChain.Count, fixture.StopWatch());
}
