// 获取最新高度MC块
public Block GetLastMcBlock()
{
var levelDBStore = Entity.Root.GetComponent <LevelDBStore>();
// 取最新高度
long.TryParse(levelDBStore.Get("UndoHeight"), out long transferHeight);
var chain1 = BlockChainHelper.GetBlockChain(transferHeight);
var chain2 = chain1.GetMcBlockNext();
while (chain2 != null)
{
chain1 = chain2;
if (chain1.height >= transferHeight + 10)
{
chain2 = null;
}
else
{
chain2 = chain1.GetMcBlockNext();
}
}
if (DelBlockWithHeightTime.IsPassSet())
{
blockMgr.DelBlockWithHeight(consensus, chain1.height);
}
Block blk1 = chain1.GetMcBlock();
// 2F1
double t_2max = consensus.GetRuleCount(blk1.height + 1);
List <Block> blks = blockMgr.GetBlock(blk1.height + 1);
blks = BlockChainHelper.GetRuleBlk(consensus, blks, chain1.hash);
if (blks.Count >= BlockChainHelper.Get2F1(t_2max))
{
chain2 = BlockChainHelper.GetMcBlockNextNotBeLink(chain1);
if (chain2 != null)
{
var blk2 = chain2.GetMcBlock();
double t_1max = consensus.GetRuleCount(blk2.height - 1);
if (blk2.linksblk.Count >= BlockChainHelper.Get2F1(t_1max))
{
return(blk2);
}
}
}
// Auxiliary Address
var blkAuxiliary = blks.Find((x) => { return(x.Address == consensus.auxiliaryAddress); });
//if (blkAuxiliary != null && blkAuxiliary.Address == consensus.auxiliaryAddress && blks.Count >= Math.Min(2, consensus.GetRuleCount(blk1.height+1)) )
if (blkAuxiliary != null && blkAuxiliary.Address == consensus.auxiliaryAddress && blks.Count >= Math.Max(2, (BlockChainHelper.Get2F1(t_2max) / 2)))
{
return(blkAuxiliary);
}
return(blk1);
}
public static double GetNonRollbackWeight(Consensus consensus, long height)
{
double t_1max = consensus.GetRuleCount(height - 1);
double t_2max = consensus.GetRuleCount(height + 1);
double fDiff = 0;
double weight = Get2F1(t_1max) + fDiff + (t_1max * Get2F1(t_2max));
return(weight);
}
public static bool IsIrreversible(Consensus consensus, Block blk, List <Block> blks2 = null)
{
double t_1max = consensus.GetRuleCount(blk.height - 1);
double t_2max = consensus.GetRuleCount(blk.height + 1);
double t_1num = consensus.GetBlockLinkCount(blk);
double t_2num = consensus.GetBlockBeLinkCount(blk, blks2);
double weight1 = (Math.Min(Get2F1(t_1max), t_1num) + (t_1max * Math.Min(Get2F1(t_2max), t_2num)));
double weight2 = Get2F1(t_1max) + (t_1max * Get2F1(t_2max));
return(weight1 >= weight2);
}
// Block权重公式: T2_weight = MIN（2/3*T1max，T1num） + 0.5f*(diff) + T1max*MIN（2/3*T3max，T3num）
// 权重最大的块胜出为主块
static public double GetBlockWeight(Consensus consensus, Block blk, List <Block> blks2 = null, bool belink = true)
{
double t_1max = consensus.GetRuleCount(blk.height - 1);
double t_2max = consensus.GetRuleCount(blk.height + 1);
double t_1num = consensus.GetBlockLinkCount(blk);
double t_2num = belink ? consensus.GetBlockBeLinkCount(blk, blks2) : 0;
double fDiff = blk.GetDiff();
double weight = (Math.Min(Get2F1(t_1max), t_1num) + fDiff + (t_1max * Math.Min(Get2F1(t_2max), t_2num)));
return(weight);
}
// 获取最新高度MC块
public Block GetLastMcBlock()
{
var levelDBStore = Entity.Root.GetComponent <LevelDBStore>();
// 取最新高度 去TopBlock
long.TryParse(levelDBStore.Get("UndoHeight"), out long transferHeight);
var chain1 = BlockChainHelper.GetBlockChain(transferHeight);
var chain2 = chain1.GetMcBlockNext();
while (chain2 != null)
{
chain1 = chain2;
chain2 = chain2.GetMcBlockNext();
}
blockMgr.DelBlockWithWeight(consensus, chain1.hash, chain1.height);
Block blk1 = chain1.GetMcBlock();
// 2F1
float timestamp = TimeHelper.NowSeconds();
double t_2max = consensus.GetRuleCount(blk1.height + 1);
List <Block> blks = blockMgr.GetBlock(blk1.height + 1);
blks = BlockChainHelper.GetRuleBlk(consensus, blks, chain1.hash);
if (blks.Count >= BlockChainHelper.Get2F1(t_2max))
{
chain2 = BlockChainHelper.GetMcBlockNextNotBeLink(chain1, timestamp, pooltime);
if (chain2 != null)
{
var blk2 = chain2.GetMcBlock();
double t_1max = consensus.GetRuleCount(blk2.height - 1);
if (blk2.linksblk.Count >= BlockChainHelper.Get2F1(t_1max))
{
return(blk2);
}
}
}
// Super Address
var blkSuper = blks.Find((x) => { return(x.Address == consensus.superAddress); });
//if (blkSuper != null && blkSuper.Address == consensus.superAddress && blks.Count >= Math.Min(2, consensus.GetRuleCount(blk1.height+1)) )
if (blkSuper != null && blkSuper.Address == consensus.superAddress && blks.Count >= Math.Max(2, (BlockChainHelper.Get2F1(t_2max) / 2)))
{
return(blkSuper);
}
return(blk1);
}
// Block权重公式: T2_weight = MIN（2/3*T1max，T1num） + 0.5f*(diff) + T1max*MIN（2/3*T3max，T3num）
// 权重最大的块胜出为主块
static public double GetBlockWeight(Consensus consensus, Block blk, List <Block> blks2 = null, bool belink = true)
{
double t_1max = consensus.GetRuleCount(blk.height - 1);
double t_2max = consensus.GetRuleCount(blk.height + 1);
// GetBlockLinkCount这个如果缺块的链接块判断为主块 但是最后发现他无法拉取到这个块该怎么办？ by sxh
double t_1num = consensus.GetBlockLinkCount(blk);
double t_2num = belink ? consensus.GetBlockBeLinkCount(blk, blks2) : 0;
double fDiff = blk.GetDiff();
// 被引用是，是引用为主块的 标记
double weight = (Math.Min(Get2F1(t_1max), t_1num) + fDiff + (t_1max * Math.Min(Get2F1(t_2max), t_2num)));
return(weight);
}
public static bool IsIrreversible(Consensus consensus, Block blk, List <Block> blks2 = null)
{
// 假如有2个抵押节点 2
double t_1max = consensus.GetRuleCount(blk.height - 1);
// 假如有2个抵押节点 2
double t_2max = consensus.GetRuleCount(blk.height + 1);
// 获取块链接别人的链接数 假设有两个节点 2
double t_1num = consensus.GetBlockLinkCount(blk);
// 获取块被链接为主块的链接数 2
double t_2num = consensus.GetBlockBeLinkCount(blk, blks2);
// T周期块的权重
double weight1 = (Math.Min(Get2F1(t_1max), t_1num) + (t_1max * Math.Min(Get2F1(t_2max), t_2num)));
// T周期-满足2F+1块最小权重
double weight2 = Get2F1(t_1max) + (t_1max * Get2F1(t_2max));
return(weight1 >= weight2);
}
// Block权重公式: T2_weight = MIN（2/3*T1max，T1num） + 0.5f*(diff) + T1max*MIN（2/3*T3max，T3num）
// 权重最大的块胜出为主块
static public double GetBlockWeight(Consensus consensus, Block blk, List <Block> blks2 = null, bool belink = true)
{
if (blk.height >= 88380) // Smartx 3.1.1 Fix
{
if (!consensus.IsRule(blk.height, blk.Address))
{
return(0);
}
}
double t_1max = consensus.GetRuleCount(blk.height - 1);
double t_2max = consensus.GetRuleCount(blk.height + 1);
double t_1num = consensus.GetBlockLinkCount(blk);
double t_2num = belink ? consensus.GetBlockBeLinkCount(blk, blks2) : 0;
double fDiff = blk.GetDiff();
double weight = (Math.Min(Get2F1(t_1max), t_1num) + fDiff + (t_1max * Math.Min(Get2F1(t_2max), t_2num)));
return(weight);
}
public static int CheckChain(BlockChain chain, List <Block> blks2, BlockMgr blockMgr, Consensus consensus)
{
blks2 = blks2 ?? blockMgr.GetBlock(chain.height + 1);
int rel = IsIrreversible(consensus, chain.GetMcBlock(), blks2) ? 2 : 0;
var blksRule = BlockChainHelper.GetRuleBlk(consensus, blks2, chain.hash);
var blkAuxiliary = blksRule.Find((x) => { return(x.Address == consensus.auxiliaryAddress); });
//if (blkAuxiliary != null && blkAuxiliary.Address == consensus.auxiliaryAddress && blksRule.Count >= Math.Min(2, consensus.GetRuleCount(chain.height + 1)))
var t_2max = consensus.GetRuleCount(chain.height + 1);
if (blkAuxiliary != null && blkAuxiliary.Address == consensus.auxiliaryAddress && blksRule.Count >= Math.Max(2, (BlockChainHelper.Get2F1(t_2max) / 2)))
{
rel = rel + 1;
}
chain.checkWeight = rel;
return(rel);
}
