public async Task <IActionResult> GetTransactionsCacheState()
{
try
{
return(Ok(await _transactionStateCacheManager.GetAsync()));
}
catch (Exception ex)
{
_log.Error(ex);
}
return(StatusCode((int)HttpStatusCode.InternalServerError));
}
public async Task ExecuteAsync()
{
IEnumerable <TransactionState> cacheState = await _cacheMaintainer.GetAsync();
foreach (TransactionState cacheTxState in cacheState)
{
BcnTransaction cacheTx = cacheTxState.Transaction;
if (cacheTx.Blockchain != BlockchainType.Bitcoin)
{
continue;
}
GetTransactionResponse bcnTransactionState;
try
{
bcnTransactionState = await _qBitNinjaClient.GetTransaction(new uint256(cacheTx.Id));
}
catch (Exception ex)
{
_log.Error(ex, "Getting transaction from ninja", cacheTxState.ToDetails());
continue;
}
// if transaction has not been indexed by ninja yet
if (bcnTransactionState == null)
{
continue;
}
BcnTransaction bcnTx = bcnTransactionState.ToDomain();
DiffResult <BcnTransaction> diffResult = _diffService.Diff(cacheTx, bcnTx);
if (diffResult != null)
{
var tx = diffResult.Object;
switch (diffResult.CompareState)
{
case DiffState.New:
_log.Warning("New transactions are not supported by watcher", context: tx.ToDetails());
break;
case DiffState.Updated:
UpdateTransactionRequest updateRequest = null;
try
{
updateRequest = tx.ToUpdateRequest(bcnTransactionState.FirstSeen.DateTime);
await _log.LogPayInternalExceptionIfAny(() =>
_payInternalClient.UpdateTransactionAsync(updateRequest));
}
catch (Exception ex)
{
_log.Error(ex, context: updateRequest.ToDetails());
}
break;
default:
throw new Exception("Unknown transactions diff state");
}
cacheTxState.Transaction = bcnTx;
try
{
await _cacheMaintainer.SetItemAsync(cacheTxState);
}
catch (Exception ex)
{
_log.Error(ex, "Updating transaction cache", cacheTxState.ToDetails());
continue;
}
}
}
}
public async Task ExecuteAsync()
{
IEnumerable <WalletState> cacheState = await _cacheMaintainer.GetAsync();
foreach (var walletState in cacheState)
{
if (walletState.Blockchain != BlockchainType.Bitcoin)
{
continue;
}
BalanceModel balance;
try
{
balance = await _qBitNinjaClient.GetBalance(BitcoinAddress.Create(walletState.Address));
}
catch (Exception ex)
{
_log.Error(ex, "Getting balance from ninja", walletState.ToDetails());
continue;
}
IEnumerable <PaymentBcnTransaction> bcnTransactions =
GetIncomingPaymentOperations(balance, walletState.Address)?.ToList() ??
new List <PaymentBcnTransaction>();
IEnumerable <PaymentBcnTransaction> cacheTransactions = walletState.Transactions;
IEnumerable <DiffResult <PaymentBcnTransaction> > diff = _diffService.Diff(cacheTransactions, bcnTransactions);
// catching case when ninja returns no transactions but should
if (cacheTransactions.Any() && !bcnTransactions.Any())
{
_log.Info("There are no transactions from ninja, but there are transactions in cache",
$"wallet: {walletState.Address}, walletState: {walletState.ToJson()}");
}
// catching case when there are any differences between ninja state and local cache state
if (diff.Any())
{
_log.Info("The difference between cache state and ninja detected",
$"wallet: {walletState.Address}, old txs: {walletState.Transactions.ToJson()}, new txs: {bcnTransactions.ToJson()}");
}
// approach to exit loop with switch statement inside
bool isSyncError = false;
foreach (var diffResult in diff)
{
var tx = diffResult.Object;
switch (diffResult.CompareState)
{
case DiffState.New:
CreateTransactionRequest createRequest = null;
try
{
var txDetails = await _qBitNinjaClient.GetTransaction(new uint256(tx.Id));
createRequest = tx.ToCreateRequest(txDetails, _bitcoinNetwork);
_log.Info("New transaction detected",
$"wallet: {walletState.Address}, Hash: {tx.Id}, FirstSeen: {txDetails.FirstSeen}");
await _log.LogPayInternalExceptionIfAny(() =>
_payInternalClient.CreatePaymentTransactionAsync(createRequest));
}
catch (Exception ex)
{
_log.Error(ex, context: createRequest.ToDetails());
isSyncError = true;
}
break;
case DiffState.Updated:
UpdateTransactionRequest updateRequest = null;
try
{
updateRequest = tx.ToUpdateRequest();
_log.Info("Transaction update detected",
$"wallet: {walletState.Address}, new tx state: {tx.ToJson()}");
await _log.LogPayInternalExceptionIfAny(() =>
_payInternalClient.UpdateTransactionAsync(updateRequest));
}
catch (Exception ex)
{
_log.Error(ex, context: updateRequest.ToDetails());
isSyncError = true;
}
break;
default: throw new Exception("Unknown transactions diff state");
}
// stop changes processing in case there is PayInternal sync error
if (isSyncError)
{
break;
}
}
if (bcnTransactions.Any())
{
walletState.Transactions = bcnTransactions;
}
// will sync internal cache with blockchain only if there were no errors while processing changes
// otherwise the changes will be processed again in the next job cycle
// WARNING: the approach will work only for single transactions update
if (!isSyncError)
{
try
{
await _cacheMaintainer.SetItemAsync(walletState);
}
catch (Exception ex)
{
_log.Error(ex, "Updating wallets cache", walletState.ToDetails());
continue;
}
}
}
}