Examples with FastSyncDownloader org.hyperledger.besu.ethereum.eth.sync.fastsync.FastSyncDownloader used on opensource projects

Example 1 with FastSyncDownloader

use of org.hyperledger.besu.ethereum.eth.sync.fastsync.FastSyncDownloader in project besu by hyperledger.

the class FastDownloaderFactory method create.

public static Optional<FastSyncDownloader<?>> create(final PivotBlockSelector pivotBlockSelector, final SynchronizerConfiguration syncConfig, final Path dataDirectory, final ProtocolSchedule protocolSchedule, final ProtocolContext protocolContext, final MetricsSystem metricsSystem, final EthContext ethContext, final WorldStateStorage worldStateStorage, final SyncState syncState, final Clock clock) {
    final Path fastSyncDataDirectory = dataDirectory.resolve(FAST_SYNC_FOLDER);
    final FastSyncStateStorage fastSyncStateStorage = new FastSyncStateStorage(fastSyncDataDirectory);
    if (SyncMode.isFullSync(syncConfig.getSyncMode())) {
        if (fastSyncStateStorage.isFastSyncInProgress()) {
            throw new IllegalStateException("Unable to change the sync mode when fast sync is incomplete, please restart with fast sync mode");
        } else {
            return Optional.empty();
        }
    }
    ensureDirectoryExists(fastSyncDataDirectory.toFile());
    final FastSyncState fastSyncState = fastSyncStateStorage.loadState(ScheduleBasedBlockHeaderFunctions.create(protocolSchedule));
    if (fastSyncState.getPivotBlockHeader().isEmpty() && protocolContext.getBlockchain().getChainHeadBlockNumber() != BlockHeader.GENESIS_BLOCK_NUMBER) {
        LOG.info("Fast sync was requested, but cannot be enabled because the local blockchain is not empty.");
        return Optional.empty();
    }
    if (worldStateStorage instanceof BonsaiWorldStateKeyValueStorage) {
        worldStateStorage.clearFlatDatabase();
    } else {
        final Path queueDataDir = fastSyncDataDirectory.resolve("statequeue");
        if (queueDataDir.toFile().exists()) {
            LOG.warn("Fast sync is picking up after old fast sync version. Pruning the world state and starting from scratch.");
            clearOldFastSyncWorldStateData(worldStateStorage, queueDataDir);
        }
    }
    final InMemoryTasksPriorityQueues<NodeDataRequest> taskCollection = createWorldStateDownloaderTaskCollection(metricsSystem, syncConfig.getWorldStateTaskCacheSize());
    final WorldStateDownloader worldStateDownloader = new FastWorldStateDownloader(ethContext, worldStateStorage, taskCollection, syncConfig.getWorldStateHashCountPerRequest(), syncConfig.getWorldStateRequestParallelism(), syncConfig.getWorldStateMaxRequestsWithoutProgress(), syncConfig.getWorldStateMinMillisBeforeStalling(), clock, metricsSystem);
    final FastSyncDownloader<NodeDataRequest> fastSyncDownloader = new FastSyncDownloader<>(new FastSyncActions(syncConfig, worldStateStorage, protocolSchedule, protocolContext, ethContext, syncState, pivotBlockSelector, metricsSystem), worldStateStorage, worldStateDownloader, fastSyncStateStorage, taskCollection, fastSyncDataDirectory, fastSyncState);
    syncState.setWorldStateDownloadStatus(worldStateDownloader);
    return Optional.of(fastSyncDownloader);
}