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Activate checkpoints

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This commit is contained in:
AlphaX-Reloaded 2024-07-07 12:12:16 +02:00
parent e4134a769b
commit 708a978de0
1 changed files with 48 additions and 28 deletions
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46
src/main/java/org/qortal/block/BlockChain.java
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@ -806,18 +806,17 @@ public class BlockChain {
* @throws SQLException
*/
public static void validate() throws DataException {
boolean isTopOnly = Settings.getInstance().isTopOnly();
boolean archiveEnabled = Settings.getInstance().isArchiveEnabled();
boolean isLite = Settings.getInstance().isLite();
boolean canBootstrap = Settings.getInstance().getBootstrap();
boolean needsArchiveRebuild = false;
int checkHeight = 0;
BlockData chainTip;
boolean checkPointFailed = false;
int currentChainHeight = 0;
int checkPointHeight = 0;
try (final Repository repository = RepositoryManager.getRepository()) {
chainTip = repository.getBlockRepository().getLastBlock();
checkHeight = repository.getBlockRepository().getBlockchainHeight();
currentChainHeight = repository.getBlockRepository().getBlockchainHeight();
// Ensure archive is (at least partially) intact, and force a bootstrap if it isn't
if (!isTopOnly && archiveEnabled && canBootstrap) {
@ -833,23 +832,30 @@ public class BlockChain {
}
}
// Validate bootstrap
if (!canBootstrap) {
if (checkHeight > 2) {
if (currentChainHeight > 2) {
LOGGER.info("Retrieved block 2 from archive. Syncing from genesis block resumed!");
} else {
needsArchiveRebuild = (repository.getBlockArchiveRepository().fromHeight(2) == null);
if (needsArchiveRebuild) {
LOGGER.info("Couldn't retrieve block 2 from archive. Bootstrapping is disabled. Syncing from genesis block!");
// If there are minting accounts, make sure to back them up
// Don't backup if there are no minting accounts, as this can cause problems
if (!repository.getAccountRepository().getMintingAccounts().isEmpty()) {
Controller.getInstance().exportRepositoryData();
}
}
}
}
// Validate checkpoints
// Limited to topOnly nodes for now, in order to reduce risk, and to solve a real-world problem with divergent topOnly nodes
// TODO: remove the isTopOnly conditional below once this feature has had more testing time
if (isTopOnly && !isLite) {
if (!isTopOnly && !isLite) {
List<Checkpoint> checkpoints = BlockChain.getInstance().getCheckpoints();
for (Checkpoint checkpoint : checkpoints) {
checkPointHeight = checkpoint.height;
if (currentChainHeight > checkPointHeight) {
BlockData blockData = repository.getBlockRepository().fromHeight(checkpoint.height);
if (blockData == null) {
// Try the archive
@ -864,19 +870,19 @@ public class BlockChain {
byte[] signature = Base58.decode(checkpoint.signature);
if (!Arrays.equals(signature, blockData.getSignature())) {
LOGGER.info("Error: block at height {} with signature {} doesn't match checkpoint sig: {}. Bootstrapping...", checkpoint.height, Base58.encode(blockData.getSignature()), checkpoint.signature);
needsArchiveRebuild = true;
LOGGER.info("Error: block at height {} with sig: {} doesn't match checkpoint sig: {}. Bootstrapping / Resync...", checkpoint.height, Base58.encode(blockData.getSignature()), checkpoint.signature);
checkPointFailed = true;
break;
}
LOGGER.info("Block at height {} matches checkpoint signature", blockData.getHeight());
}
}
}
}
// Check first block is Genesis Block
if (!isGenesisBlockValid() || needsArchiveRebuild) {
if (checkHeight < 3) {
if (!canBootstrap && currentChainHeight < 3) {
try {
rebuildBlockchain();
} catch (InterruptedException e) {
@ -885,6 +891,20 @@ public class BlockChain {
}
}
// If checkpoint failed resync or bootstrap
if (checkPointFailed) {
try (final Repository repository = RepositoryManager.getRepository()) {
// If there are minting accounts, make sure to back them up
// Don't backup if there are no minting accounts, as this can cause problems
if (!repository.getAccountRepository().getMintingAccounts().isEmpty()) {
Controller.getInstance().exportRepositoryData();
}
rebuildBlockchain();
} catch (InterruptedException e) {
throw new DataException(String.format("Interrupted when trying to rebuild blockchain: %s", e.getMessage()));
}
}
// We need to create a new connection, as the previous repository and its connections may be been
// closed by rebuildBlockchain() if a bootstrap was applied
try (final Repository repository = RepositoryManager.getRepository()) {