public Erc20BalanceIndexingActor(
IErc20BalanceIndexingService indexingService,
ILog logger,
ulong startFrom)
{
_indexingService = indexingService;
_logger = logger;
_startFrom = startFrom;
ReceiveAsync <Messages.Erc20BalanceIndexingActor.IndexBlockMessage>(async(message) =>
{
var sender = Sender;
var blockNumber = message.BlockNumber;
await _indexingService.IndexBlockAsync(blockNumber, Version);
await _logger.WriteInfoAsync
(
nameof(Erc20BalanceIndexingJob),
nameof(ReceiveAsync),
"Block balances indexed",
$"Indexed balances of block {blockNumber}.",
DateTime.UtcNow
);
sender.Tell(new Success(true));
});
}
public Task RunAsync(CancellationToken cancellationToken)
{
return(Task.Factory.StartNew(async() =>
{
try
{
while (!cancellationToken.IsCancellationRequested)
{
var nextBlockToIndex = await _indexingService.GetNextBlockToIndexAsync(_startFrom);
if (nextBlockToIndex.HasValue)
{
await _indexingService.IndexBlockAsync(nextBlockToIndex.Value, Version);
await _logger.WriteInfoAsync
(
nameof(Erc20BalanceIndexingJob),
nameof(RunAsync),
"Block balances indexed",
$"Indexed balances of block {nextBlockToIndex}.",
DateTime.UtcNow
);
}
else
{
await Task.Delay(TimeSpan.FromSeconds(10), cancellationToken);
}
}
}
catch (Exception e)
{
await _logger.WriteErrorAsync
(
nameof(Erc20BalanceIndexingJob),
nameof(RunAsync),
"Indexing failed",
e,
DateTime.UtcNow
);
throw;
}
}, cancellationToken).Unwrap());
}
