private void UpdateBalanceIndex(string fromAddress, string toAddress, string tokenSymbol, long amount)
{
if (tokenSymbol == null)
{
return;
}
//Create sender index
CreateIndexIfNotExist(fromAddress, tokenSymbol);
//Create recipient index
CreateIndexIfNotExist(toAddress, tokenSymbol);
//Update sender balance
if (fromAddress != null)
{
BalanceIndexItem index = database.GetBalanceIndex(fromAddress, tokenSymbol);
index.Balance = index.Balance - amount;
database.SaveBalanceIndex(index);
IndexBalanceCache.AddOrUpdate(index);
}
//Update recipient balance
if (toAddress != null)
{
BalanceIndexItem index = database.GetBalanceIndex(toAddress, tokenSymbol);
index.Balance = index.Balance + amount;
database.SaveBalanceIndex(index);
IndexBalanceCache.AddOrUpdate(index);
}
}
public void DeleteIndex(TransactionTransfer record)
{
database.DeleteBalanceIndex(record.FromAddress, record.TokenSymbol);
database.DeleteBalanceIndex(record.ToAddress, record.TokenSymbol);
IndexBalanceCache.Remove(record.FromAddress, record.TokenSymbol);
IndexBalanceCache.Remove(record.ToAddress, record.TokenSymbol);
}
public BalanceIndexItem Get(string address, string token)
{
var cachedIndex = IndexBalanceCache.Get(address, token);
if (cachedIndex != null)
{
return(cachedIndex);
}
var index = database.GetBalanceIndex(address, token);
if (index != null)
{
IndexBalanceCache.AddOrUpdate(index);
}
return(index);
}
private void CreateIndexIfNotExist(string address, string tokenSymbol)
{
if (address != null)
{
var index = database.GetBalanceIndex(address, tokenSymbol);
if (index == null)
{
index = new BalanceIndexItem();
index.TokenSymbol = tokenSymbol;
index.Balance = 0;
index.Address = address;
database.SaveBalanceIndex(index);
IndexBalanceCache.AddOrUpdate(index);
}
}
}
