Examples with EthereumBackend org.adridadou.ethereum.propeller.EthereumBackend used on opensource projects

Example 1 with EthereumBackend

use of org.adridadou.ethereum.propeller.EthereumBackend in project eth-propeller-ethj by adridadou.

the class PrivateEthereumFacadeProvider method create.

public EthereumFacade create(PrivateNetworkConfig config, EthereumConfig ethereumConfig) {
    final boolean dagCached = new File("cachedDag/mine-dag.dat").exists();
    if (config.isResetPrivateBlockchain()) {
        deleteFolder(new File(config.getDbName()), true);
    }
    if (dagCached) {
        new File(config.getDbName()).mkdirs();
        try {
            FileUtils.copyFile(new File("cachedDag/mine-dag.dat"), new File(config.getDbName() + "/mine-dag.dat"));
            FileUtils.copyFile(new File("cachedDag/mine-dag-light.dat"), new File(config.getDbName() + "/mine-dag-light.dat"));
        } catch (IOException e) {
            throw new EthereumApiException("error while copying dag files", e);
        }
    }
    MinerConfig.dbName = config.getDbName();
    Ethereum ethereum = EthereumFactory.createEthereum(MinerConfig.class);
    EthereumBackend ethereumBackend = new EthereumReal(ethereum);
    ethereum.initSyncing();
    if (!dagCached) {
        try {
            new File("cachedDag").mkdirs();
            FileUtils.copyFile(new File(config.getDbName() + "/mine-dag.dat"), new File("cachedDag/mine-dag.dat"));
            FileUtils.copyFile(new File(config.getDbName() + "/mine-dag-light.dat"), new File("cachedDag/mine-dag-light.dat"));
        } catch (IOException e) {
            log.warn("couldn't copy files: " + e.getMessage());
        }
    }
    EthereumEventHandler ethereumListener = new EthereumEventHandler();
    final EthereumFacade facade = CoreEthereumFacadeProvider.create(ethereumBackend, ethereumConfig);
    // This event does not trigger when you are the miner
    ethereumListener.onReady();
    facade.events().ready().thenAccept((b) -> config.getInitialBalances().entrySet().stream().map(entry -> facade.sendEther(mainAccount, entry.getKey().getAddress(), entry.getValue())).forEach(result -> {
        try {
            result.get();
        } catch (InterruptedException | ExecutionException e) {
            throw new EthereumApiException("error while setting the initial balances");
        }
    }));
    return facade;
}