public override IEnumerable <PendingSwap> Update()
{
lock (String.Intern("PendingSetCurrentHeight_" + "neo"))
{
var result = new List <PendingSwap>();
try
{
var _interopBlockHeight = BigInteger.Parse(OracleReader.GetCurrentHeight("neo", "neo"));
// initial start, we have to verify all processed swaps
if (initialStart)
{
Logger.Debug($"Read all neo blocks now.");
// TODO check if quick sync nodes are configured, if so use quick sync
// we need to find a better solution for that though
var allInteropBlocks = OracleReader.ReadAllBlocks("neo", "neo");
Logger.Debug($"Found {allInteropBlocks.Count} blocks");
foreach (var block in allInteropBlocks)
{
try
{
ProcessBlock(block, result);
}
catch (Exception e)
{
Logger.Debug($"Block {block.Hash} was not processed correctly: " + e);
}
}
initialStart = false;
Logger.Debug($"QuickSync: " + quickSync);
// quick sync is only done once after startup
if (quickSync)
{
// if quick sync is active, we can use a specific plugin installed on the nodes (EventTracker)
try
{
var blockIds = neoAPI.GetSwapBlocks("ed07cffad18f1308db51920d99a2af60ac66a7b3", LocalAddress, _interopBlockHeight.ToString());
Logger.Debug($"Found {blockIds.Count} blocks to process ");
List <InteropBlock> blockList = new List <InteropBlock>();
foreach (var entry in blockIds)
{
//logger.Debug($"read block {entry.Value}");
var url = DomainExtensions.GetOracleBlockURL("neo", "neo", PBigInteger.Parse(entry.Value.ToString()));
blockList.Add(OracleReader.Read <InteropBlock>(DateTime.Now, url));
}
// get blocks and order them for processing
var blocksToProcess = blockList.Where(x => blockIds.ContainsKey(x.Hash.ToString()))
.Select(x => new { block = x, id = blockIds[x.Hash.ToString()] })
.OrderBy(x => x.id);
Logger.Debug($"blocks to process: {blocksToProcess.Count()}");
foreach (var entry in blocksToProcess.OrderBy(x => x.id))
{
Logger.Debug($"process block {entry.id}");
ProcessBlock(entry.block, result);
OracleReader.SetCurrentHeight("neo", "neo", _interopBlockHeight.ToString());
_interopBlockHeight = BigInteger.Parse(entry.id.ToString());
}
}
catch (Exception e)
{
Logger.Error("Inital start failed: " + e.ToString());
}
}
// return after the initial start to be able to process all swaps that happend in the mean time.
return(result);
}
var blockIterator = new BlockIterator(neoAPI);
var blockDifference = blockIterator.currentBlock - _interopBlockHeight;
var batchCount = (blockDifference > 8) ? 8 : blockDifference; //TODO make it a constant, should be no more than 8
while (blockIterator.currentBlock > _interopBlockHeight)
{
if (_resyncBlockIds.Any())
{
for (var i = 0; i < _resyncBlockIds.Count; i++)
{
var blockId = _resyncBlockIds.ElementAt(i);
if (blockId > _interopBlockHeight)
{
Logger.Debug($"NeoInterop: Update() resync block {blockId} higher than current interop height, can't resync.");
_resyncBlockIds.RemoveAt(i);
continue;
}
try
{
Logger.Debug($"NeoInterop: Update() resync block {blockId} now.");
var interopBlock = GetInteropBlock(blockId);
ProcessBlock(interopBlock, result);
}
catch (Exception e)
{
Logger.Error($"NeoInterop: Update() resync block {blockId} failed: " + e);
}
_resyncBlockIds.RemoveAt(i);
}
}
Logger.Debug($"Swaps: Current Neo chain height: {blockIterator.currentBlock}, interop: {_interopBlockHeight}, delta: {blockIterator.currentBlock - _interopBlockHeight}");
blockDifference = blockIterator.currentBlock - _interopBlockHeight;
batchCount = (blockDifference > 8) ? 8 : blockDifference;
if (batchCount > 1)
{
List <Task <InteropBlock> > taskList = CreateTaskList(batchCount);
foreach (var task in taskList)
{
task.Start();
}
Task.WaitAll(taskList.ToArray());
foreach (var task in taskList)
{
var block = task.Result;
ProcessBlock(block, result);
}
OracleReader.SetCurrentHeight("neo", "neo", _interopBlockHeight.ToString());
_interopBlockHeight += batchCount;
}
else
{
var interopBlock = GetInteropBlock(_interopBlockHeight);
ProcessBlock(interopBlock, result);
OracleReader.SetCurrentHeight("neo", "neo", _interopBlockHeight.ToString());
_interopBlockHeight++;
}
}
}
catch (Exception e)
{
Logger.Error("Neo block sync failed: " + e);
}
return(result);
}
}