/// <summary>
/// if this node is seed0 then sync with seeds others (random choice the one that is in normal state)
/// if this node is seed1+ then sync with seed0
/// otherwise sync with any seed node
/// </summary>
private void SyncBlocksFromSeeds(long ToUIndex)
{
InSyncing = true;
Task.Run(async() => {
while (true)
{
_log.LogInformation("BlockChain Doing Sync...");
string syncWithUrl = null;
LyraRestClient client = null;
long syncToUIndex = ToUIndex;
#if DEBUG
for (int i = 0; i < 2; i++) // save time
#else
for (int i = 0; i < ProtocolSettings.Default.SeedList.Length; i++)
#endif
{
if (NodeService.Instance.PosWallet.AccountId == ProtocolSettings.Default.StandbyValidators[i]) // self
{
continue;
}
try
{
var addr = ProtocolSettings.Default.SeedList[i].Split(':')[0];
var apiUrl = $"https://{addr}:4505/api/LyraNode/";
_log.LogInformation("Platform {1} Use seed node of {0}", apiUrl, Environment.OSVersion.Platform);
client = await LyraRestClient.CreateAsync(NetworkID, Environment.OSVersion.Platform.ToString(), "LyraNode2", "1.0", apiUrl);
var mode = await client.GetSyncState();
if (mode.ResultCode == APIResultCodes.Success && mode.Mode == ConsensusWorkingMode.Normal)
{
syncWithUrl = apiUrl;
if (syncToUIndex == 0)
{
syncToUIndex = mode.NewestBlockUIndex;
}
break;
}
}
catch (Exception ex)
{
_log.LogWarning($"Trying to sync.. {ex.Message}");
}
}
if (syncWithUrl == null)
{
// no node to sync.
if (NodeService.Instance.PosWallet.AccountId == ProtocolSettings.Default.StandbyValidators[0])
{
// seed0. no seed to sync. this seed must have the NORMAL blockchain
break;
}
else
{
_log.LogError("No seed node in normal state. Wait...");
await Task.Delay(300 * 1000);
}
}
else
{
// update latest billboard
var board = await client.GetBillBoardAsync();
LyraSystem.Singleton.Consensus.Tell(board);
// do sync with node
long startUIndex = await _store.GetNewestBlockUIndexAsync() + 1;
_log.LogInformation($"BlockChain Doing sync from {startUIndex} to {syncToUIndex} from node {syncWithUrl}");
async Task <bool> DoCopyBlock(long fromUIndex, long toUIndex)
{
var authorizers = new AuthorizersFactory();
for (long j = fromUIndex; j <= toUIndex; j++)
{
var blockResult = await client.GetBlockByUIndex(j).ConfigureAwait(false);
if (blockResult.ResultCode == APIResultCodes.Success)
{
var blockX = blockResult.GetBlock() as TransactionBlock;
if (blockX.UIndex <= 2) // the two genesis service block
{
await AddBlockAsync(blockX);
continue;
}
var stopwatch = Stopwatch.StartNew();
var authorizer = authorizers.Create(blockX.BlockType);
var localAuthResult = await authorizer.AuthorizeAsync(blockX, false);
stopwatch.Stop();
_log.LogInformation($"Authorize takes {stopwatch.ElapsedMilliseconds} ms");
if (localAuthResult.Item1 == APIResultCodes.Success)
{
await AddBlockAsync(blockX);
fromUIndex = j + 1;
_log.LogInformation($"BlockChain Synced Block Number: {j}");
}
else
{
_log.LogInformation($"BlockChain Block Number: {j} verify failed for {localAuthResult.Item1}");
return(false);
}
}
else
{
// error
_log.LogInformation($"Error syncing block: {blockResult.ResultCode}");
continue;
}
}
return(true);
}
var copyOK = await DoCopyBlock(startUIndex, syncToUIndex).ConfigureAwait(false);
if (copyOK)
{
//// check missing block
//for(long k = 1; k <= startUIndex; k++)
//{
// if(await BlockChain.Singleton.GetBlockByUIndex(k) == null)
// {
// _log.LogInformation($"syncing one missing block: {k}");
// await DoCopyBlock(k, k).ConfigureAwait(false);
// }
//}
break;
}
else
{
await Task.Delay(5000).ConfigureAwait(false);
}
}
}
InSyncing = false;
LyraSystem.Singleton.Consensus.Tell(new ConsensusService.BlockChainSynced());
_log.LogInformation("BlockChain Sync Completed.");
});
}
