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 BigInteger getTotalDifficultyForHash(byte[] hash) {
Block block = this.getBlockByHash(hash);
if (block == null) return ZERO;
Long level = block.getNumber();
List<BlockInfo> blockInfos = index.get(level.intValue());
for (BlockInfo blockInfo : blockInfos)
if (areEqual(blockInfo.getHash(), hash)) {
return blockInfo.cummDifficulty;
}
return ZERO;
}
@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<Block> getBlocksByNumber(long number) {
List<Block> result = new ArrayList<>();
if (number >= index.size()) {
return result;
}
List<BlockInfo> blockInfos = index.get((int) number);
for (BlockInfo blockInfo : blockInfos) {
byte[] hash = blockInfo.getHash();
Block block = blocks.get(hash);
result.add(block);
}
return result;
}
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;
}
private static BlockInfo getBlockInfoForHash(List<BlockInfo> blocks, byte[] hash) {
for (BlockInfo blockInfo : blocks) if (areEqual(hash, blockInfo.getHash())) return blockInfo;
return null;
}