/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ethereum.db;
import org.ethereum.core.Block;
/**
* Created by Anton Nashatyrev on 29.10.2015.
*/
public abstract class AbstractBlockstore implements BlockStore {
@Override
public byte[] getBlockHashByNumber(long blockNumber, byte[] branchBlockHash) {
Block branchBlock = getBlockByHash(branchBlockHash);
if (branchBlock.getNumber() < blockNumber) {
throw new IllegalArgumentException("Requested block number > branch hash number: " + blockNumber + " < " + branchBlock.getNumber());
}
while(branchBlock.getNumber() > blockNumber) {
branchBlock = getBlockByHash(branchBlock.getParentHash());
}
return branchBlock.getHash();
}
}