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 static void AddOrUpdate(BalanceIndexItem item)
{
if (cache == null)
{
cache = new List <BalanceIndexItem>();
cache.Add(item);
}
else
{
var find = cache.Where(x =>
x.Address == item.Address &&
x.TokenSymbol == item.TokenSymbol)
.FirstOrDefault();
if (find == null)
{
cache.Add(item);
}
else
{
cache.Remove(find);
cache.Add(item);
}
}
}
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);
}
}
}
