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Added simplistic blockchain validation on startup

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This commit is contained in:
catbref 2019-05-28 17:21:38 +01:00
parent f167d0c831
commit 8b949dc1a1
1 changed files with 22 additions and 3 deletions
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25
src/main/java/org/qora/block/BlockChain.java
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@ -7,10 +7,10 @@ import java.io.Reader;
import java.math.BigDecimal;
import java.math.MathContext;
import java.sql.SQLException;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.concurrent.locks.ReentrantLock;
import java.util.stream.Collectors;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
@ -27,9 +27,7 @@ import org.eclipse.persistence.exceptions.XMLMarshalException;
import org.eclipse.persistence.jaxb.JAXBContextFactory;
import org.eclipse.persistence.jaxb.UnmarshallerProperties;
import org.qora.controller.Controller;
import org.qora.crypto.Crypto;
import org.qora.data.block.BlockData;
import org.qora.data.network.BlockSummaryData;
import org.qora.network.Network;
import org.qora.repository.BlockRepository;
import org.qora.repository.DataException;
@ -316,6 +314,27 @@ public class BlockChain {
// Check first block is Genesis Block
if (!isGenesisBlockValid())
rebuildBlockchain();
// TODO: walk through blocks
try (final Repository repository = RepositoryManager.getRepository()) {
Block parentBlock = GenesisBlock.getInstance(repository);
BlockData parentBlockData = parentBlock.getBlockData();
while (true) {
BlockData childBlockData = parentBlock.getChild();
if (childBlockData == null)
break;
if (!Arrays.equals(childBlockData.getReference(), parentBlock.getSignature())) {
LOGGER.error(String.format("Block %d's reference does not match block %d's signature", childBlockData.getHeight(), parentBlockData.getHeight()));
rebuildBlockchain();
return;
}
parentBlock = new Block(repository, childBlockData);
parentBlockData = childBlockData;
}
}
}
private static boolean isGenesisBlockValid() throws DataException {