@Override
public BigInteger getTotalDifficulty() {
long maxNumber = getMaxNumber();
List<BlockInfo> blockInfos = index.get((int) maxNumber);
for (BlockInfo blockInfo : blockInfos) {
if (blockInfo.isMainChain()) {
return blockInfo.getCummDifficulty();
}
}
while (true) {
--maxNumber;
List<BlockInfo> infos = getBlockInfoForLevel(maxNumber);
for (BlockInfo blockInfo : infos) {
if (blockInfo.isMainChain()) {
return blockInfo.getCummDifficulty();
}
}
}
}
public void printChain() {
Long number = getMaxNumber();
for (int i = 0; i < number; ++i) {
List<BlockInfo> levelInfos = index.get(i);
if (levelInfos != null) {
System.out.print(i);
for (BlockInfo blockInfo : levelInfos) {
if (blockInfo.isMainChain())
System.out.print(" [" + shortHash(blockInfo.getHash()) + "] ");
else System.out.print(" " + shortHash(blockInfo.getHash()) + " ");
}
System.out.println();
}
}
}
@Override
public Block getChainBlockByNumber(long number) {
if (number >= index.size()) {
return null;
}
List<BlockInfo> blockInfos = index.get((int) number);
for (BlockInfo blockInfo : blockInfos) {
if (blockInfo.isMainChain()) {
byte[] hash = blockInfo.getHash();
return blocks.get(hash);
}
}
return null;
}
public List<byte[]> getListHashesStartWith(long number, long maxBlocks) {
List<byte[]> result = new ArrayList<>();
int i;
for (i = 0; i < maxBlocks; ++i) {
List<BlockInfo> blockInfos = index.get((int) number);
if (blockInfos == null) break;
for (BlockInfo blockInfo : blockInfos)
if (blockInfo.isMainChain()) {
result.add(blockInfo.getHash());
break;
}
++number;
}
maxBlocks -= i;
return result;
}