private void EnqueueFetchBlockJob(SyncAnnouncementDto syncAnnouncementDto, int retryTimes)
{
_blockSyncQueueService.Enqueue(async() =>
{
Logger.LogTrace(
$"Block sync: Fetch block, block height: {syncAnnouncementDto.SyncBlockHeight}, block hash: {syncAnnouncementDto.SyncBlockHash}.");
var fetchResult = false;
if (ValidateQueueAvailability())
{
fetchResult = await _blockFetchService.FetchBlockAsync(syncAnnouncementDto.SyncBlockHash,
syncAnnouncementDto.SyncBlockHeight, syncAnnouncementDto.SuggestedPeerPubkey);
}
if (fetchResult)
{
return;
}
if (retryTimes > 1)
{
EnqueueFetchBlockJob(syncAnnouncementDto, retryTimes - 1);
}
else if (_announcementCacheProvider.TryGetAnnouncementNextSender(syncAnnouncementDto.SyncBlockHash, out var senderPubKey))
{
syncAnnouncementDto.SuggestedPeerPubkey = senderPubKey;
EnqueueFetchBlockJob(syncAnnouncementDto, BlockSyncConstants.FetchBlockRetryTimes);
}
}, OSConstants.BlockFetchQueueName);
}
public async Task FetchBlock_Success()
{
var peerBlock = await _networkService.GetBlockByHashAsync(Hash.FromString("PeerBlock"));
var block = await _blockchainService.GetBlockByHashAsync(peerBlock.GetHash());
block.ShouldBeNull();
var fetchResult = await _blockFetchService.FetchBlockAsync(peerBlock.GetHash(), peerBlock.Height, null);
fetchResult.ShouldBeTrue();
block = await _blockchainService.GetBlockByHashAsync(peerBlock.GetHash());
block.GetHash().ShouldBe(peerBlock.GetHash());
}
public async Task FetchBlock_Success()
{
var response = await _networkService.GetBlockByHashAsync(HashHelper.ComputeFrom("PeerBlock"), null);
var peerBlock = response.Payload;
var block = await _blockchainService.GetBlockByHashAsync(peerBlock.GetHash());
block.ShouldBeNull();
var fetchResult = await _blockFetchService.FetchBlockAsync(peerBlock.GetHash(), peerBlock.Height, null);
fetchResult.ShouldBeTrue();
block = await _blockchainService.GetBlockByHashAsync(peerBlock.GetHash());
block.GetHash().ShouldBe(peerBlock.GetHash());
}
public async Task FetchBlock_ReturnInvalidBlock()
{
var abnormalPeerPubkey = "AbnormalPeerPubkey";
var abnormalPeer = _networkService.GetPeerByPubkey(abnormalPeerPubkey);
abnormalPeer.ShouldNotBeNull();
var result =
await _blockFetchService.FetchBlockAsync(Hash.FromString("AnnounceBlockHash"), 100, abnormalPeerPubkey);
result.ShouldBeFalse();
abnormalPeer = _networkService.GetPeerByPubkey(abnormalPeerPubkey);
abnormalPeer.ShouldBeNull();
}
