public void TestSameBlock()
{
var walker = new BlockchainWalker();
var path = walker.GetBlockchainPath(this.chainedHeaderA2, this.chainedHeaderA2, this.getChainedHeader);
Assert.AreEqual(this.chainedHeaderA2, path.FromBlock);
Assert.AreEqual(this.chainedHeaderA2, path.ToBlock);
Assert.AreEqual(this.chainedHeaderA2, path.LastCommonBlock);
Assert.AreEqual(0, path.RewindBlocks.Count);
Assert.AreEqual(0, path.AdvanceBlocks.Count);
}
public void TestAdvanceFromGenesis()
{
var walker = new BlockchainWalker();
var path = walker.GetBlockchainPath(this.chainedHeader0, this.chainedHeaderA4, this.getChainedHeader);
Assert.AreEqual(this.chainedHeader0, path.FromBlock);
Assert.AreEqual(this.chainedHeaderA4, path.ToBlock);
Assert.AreEqual(this.chainedHeader0, path.LastCommonBlock);
Assert.AreEqual(0, path.RewindBlocks.Count);
Assert.AreEqual(4, path.AdvanceBlocks.Count);
Assert.AreEqual(this.chainedHeader1, path.AdvanceBlocks[0]);
Assert.AreEqual(this.chainedHeaderA2, path.AdvanceBlocks[1]);
Assert.AreEqual(this.chainedHeaderA3, path.AdvanceBlocks[2]);
Assert.AreEqual(this.chainedHeaderA4, path.AdvanceBlocks[3]);
}
public void TestRewindAndAdvanceToHigher()
{
var walker = new BlockchainWalker();
var path = walker.GetBlockchainPath(this.chainedHeaderA3, this.chainedHeaderB4, this.getChainedHeader);
Assert.AreEqual(this.chainedHeaderA3, path.FromBlock);
Assert.AreEqual(this.chainedHeaderB4, path.ToBlock);
Assert.AreEqual(this.chainedHeader1, path.LastCommonBlock);
Assert.AreEqual(2, path.RewindBlocks.Count);
Assert.AreEqual(this.chainedHeaderA3, path.RewindBlocks[0]);
Assert.AreEqual(this.chainedHeaderA2, path.RewindBlocks[1]);
Assert.AreEqual(3, path.AdvanceBlocks.Count);
Assert.AreEqual(this.chainedHeaderB2, path.AdvanceBlocks[0]);
Assert.AreEqual(this.chainedHeaderB3, path.AdvanceBlocks[1]);
Assert.AreEqual(this.chainedHeaderB4, path.AdvanceBlocks[2]);
}
private void UpdateTargetChain()
{
using (updatedTracker.TryUpdate(staleAction: NotifyWork))
{
try
{
var targetBlockLocal = this.targetBlock;
var targetChainLocal = this.targetChain;
if (targetBlockLocal != null && targetBlockLocal.Hash != targetChainLocal?.LastBlock.Hash)
{
var newTargetChain = targetChainLocal?.ToBuilder()
?? new ChainBuilder(Chain.CreateForGenesisBlock(this.chainParams.GenesisChainedHeader));
var deltaBlockPath = new BlockchainWalker().GetBlockchainPath(newTargetChain.LastBlock, targetBlockLocal, blockHash => this.coreStorage.GetChainedHeader(blockHash));
foreach (var rewindBlock in deltaBlockPath.RewindBlocks)
{
newTargetChain.RemoveBlock(rewindBlock);
}
foreach (var advanceBlock in deltaBlockPath.AdvanceBlocks)
{
newTargetChain.AddBlock(advanceBlock);
}
logger.Debug($"Winning chained block {newTargetChain.LastBlock.Hash} at height {newTargetChain.Height}, total work: {newTargetChain.LastBlock.TotalWork:X}");
this.targetChain = newTargetChain.ToImmutable();
this.OnTargetChainChanged?.Invoke();
}
}
catch (MissingDataException) { }
finally
{
inittedEvent.Set();
}
}
}
private void UpdateTargetChain()
{
using (updatedTracker.TryUpdate(staleAction: NotifyWork))
{
try
{
var targetBlockLocal = this.targetBlock;
var targetChainLocal = this.targetChain;
if (targetBlockLocal != null && targetBlockLocal.Hash != targetChainLocal?.LastBlock.Hash)
{
var newTargetChain = targetChainLocal?.ToBuilder()
?? new ChainBuilder(Chain.CreateForGenesisBlock(this.rules.GenesisChainedHeader));
var deltaBlockPath = new BlockchainWalker().GetBlockchainPath(newTargetChain.LastBlock, targetBlockLocal, blockHash => this.coreStorage.GetChainedHeader(blockHash));
foreach (var rewindBlock in deltaBlockPath.RewindBlocks)
{
newTargetChain.RemoveBlock(rewindBlock);
}
foreach (var advanceBlock in deltaBlockPath.AdvanceBlocks)
{
newTargetChain.AddBlock(advanceBlock);
}
logger.Debug($"Winning chained block {newTargetChain.LastBlock.Hash} at height {newTargetChain.Height}, total work: {newTargetChain.LastBlock.TotalWork:X}");
this.targetChain = newTargetChain.ToImmutable();
this.OnTargetChainChanged?.Invoke();
}
}
catch (MissingDataException) { }
finally
{
inittedEvent.Set();
}
}
}
public void TestChainMismatch()
{
var walker = new BlockchainWalker();
walker.GetBlockchainPath(this.chainedHeaderA4, this.chainedHeaderX0, this.getChainedHeader);
}
