public static string[] AffectedAccounts(Tx tx, Meta meta)
{
var accounts = new List <string>();
accounts.Add(tx.Account);
if (tx.Destination != null)
{
accounts.Add(tx.Destination);
}
if (tx.LimitAmount != null)
{
accounts.Add(tx.LimitAmount.Issuer);
}
if (meta != null && meta.TransactionResult == "tesSUCCESS")
{
foreach (var an in meta.AffectedNodes)
{
var node = an.CreatedNode ?? an.DeletedNode ?? an.ModifiedNode;
if (node == null)
{
continue;
}
var fieldsSet = new FieldsSet(node.FinalFields, node.NewFields, node.PreviousFields);
switch (node.LedgerEntryType)
{
case "AccountRoot":
case "Offer":
var account = fieldsSet.Account;
if (account != null)
{
accounts.Add(account);
}
break;
case "SkywellState":
var highLimit = fieldsSet.HighLimit;
if (highLimit != null && highLimit.Issuer != null)
{
accounts.Add(highLimit.Issuer);
}
var lowLimit = fieldsSet.LowLimit;
if (lowLimit != null && lowLimit.Issuer != null)
{
accounts.Add(lowLimit.Issuer);
}
break;
}
}
}
return(accounts.ToArray());
}
public static string[] AffectBooks(Tx tx, Meta meta)
{
if (tx == null || meta == null)
{
return(null);
}
var isSell = ((long)LedgerOfferFlags.Sell & tx.Flags) != 0;
var books = new List <string>();
foreach (var an in meta.AffectedNodes)
{
var node = an.CreatedNode ?? an.ModifiedNode ?? an.DeletedNode;
if (node == null || node.LedgerEntryType != "Offer")
{
continue;
}
var fielsSet = new FieldsSet(node.FinalFields, node.NewFields, node.PreviousFields);
var gets = fielsSet.TakerGets;
var pays = fielsSet.TakerPays;
var getsKey = GetAmountString(gets);
var paysKey = GetAmountString(pays);
var key = isSell ? GetAmoutPairKey(pays, gets) : GetAmoutPairKey(gets, pays);
books.Add(key);
}
return(books.ToArray());
}
private static NodeEffect[] ParseEffects(Tx tx, AffectedNode[] affectedNodes, string account, TxResult result)
{
if (affectedNodes == null || affectedNodes.Length == 0)
{
return(null);
}
var effects = new List <NodeEffect>();
foreach (var an in affectedNodes)
{
var diffType = an.DiffType;
var node = an.CreatedNode ?? an.DeletedNode ?? an.ModifiedNode;
var fieldsSet = new FieldsSet(node.FinalFields, node.PreviousFields, node.NewFields);
NodeEffect nodeEffect = null;
//TODO now only get offer related effects, need to process other entry type
if (node.LedgerEntryType == "Offer")
{
// for new and cancelled offers
var sell = fieldsSet.Flags == (long)LedgerOfferFlags.Sell;
OfferEffect offerEffect = null;
// current account offer
if (fieldsSet.Account == account)
{
// 1. offer_partially_funded
var seq = fieldsSet.Sequence;
if (diffType == DiffType.ModifiedNode || (diffType == DiffType.DeletedNode && node.PreviousFields != null && node.PreviousFields.TakerGets != null && !IsAmountZero(node.FinalFields.TakerGets)))
{
var partiallyFoundedEffect = new OfferPartiallyFundedEffect();
offerEffect = partiallyFoundedEffect;
partiallyFoundedEffect.Seq = seq;
partiallyFoundedEffect.CounterParty = new CounterParty {
Account = tx.Account, Seq = tx.Sequence, Hash = tx.Hash
};
if (diffType == DiffType.DeletedNode)
{
partiallyFoundedEffect.Cancelled = true;
}
else
{
// TODO no need partially funded must remains offers
partiallyFoundedEffect.Remaining = !IsAmountZero(fieldsSet.TakerGets);
}
var gets = fieldsSet.TakerGets;
var pays = fieldsSet.TakerPays;
partiallyFoundedEffect.Gets = gets;
partiallyFoundedEffect.Pays = pays;
partiallyFoundedEffect.Got = AmountSubtract(node.PreviousFields.TakerPays, pays);
partiallyFoundedEffect.Paid = AmountSubtract(node.PreviousFields.TakerGets, gets);
partiallyFoundedEffect.Type = sell ? OfferEffectType.Sold : OfferEffectType.Bought;
}
else
{
// offer_funded, offer_created or offer_cancelled offer effect
var effect = diffType == DiffType.CreatedNode ? EffectType.OfferCreated : (node.PreviousFields != null && node.PreviousFields.TakerPays != null ? EffectType.OfferFunded : EffectType.OfferCancelled);
switch (effect)
{
// 2. offer_funded
case EffectType.OfferFunded:
var fundedfEffect = new OfferFundedEffect();
fundedfEffect.Seq = seq;
offerEffect = fundedfEffect;
fundedfEffect.CounterParty = new CounterParty {
Account = tx.Account, Seq = tx.Sequence, Hash = tx.Hash
};
fundedfEffect.Got = AmountSubtract(node.PreviousFields.TakerPays, fieldsSet.TakerPays);
fundedfEffect.Paid = AmountSubtract(node.PreviousFields.TakerGets, fieldsSet.TakerGets);
fundedfEffect.Type = sell ? OfferEffectType.Sold : OfferEffectType.Bought;
break;
// 3. offer_created
case EffectType.OfferCreated:
var createdEffect = new OfferCreatedEffect();
createdEffect.Seq = seq;
offerEffect = createdEffect;
createdEffect.Gets = fieldsSet.TakerGets;
createdEffect.Pays = fieldsSet.TakerPays;
createdEffect.Type = sell ? OfferEffectType.Sell : OfferEffectType.Buy;
break;
// 4. offer_cancelled
case EffectType.OfferCancelled:
var cancelledEffect = new OfferCancelledEffect();
cancelledEffect.Seq = seq;
offerEffect = cancelledEffect;
cancelledEffect.Gets = fieldsSet.TakerGets;
cancelledEffect.Pays = fieldsSet.TakerPays;
cancelledEffect.Type = sell ? OfferEffectType.Sell : OfferEffectType.Buy;
// collect data for cancel transaction type
if (result.Type == TxResultType.OfferCancel)
{
var cancelResult = result as OfferCancelTxResult;
cancelResult.Gets = cancelledEffect.Gets;
cancelResult.Pays = cancelledEffect.Pays;
}
break;
}
}
}
// 5. offer_bought
else if (tx.Account == account && node.PreviousFields != null)
{
var boughtEffect = new OfferBoughtEffect();
offerEffect = boughtEffect;
boughtEffect.CounterParty = new CounterParty {
Account = fieldsSet.Account, Seq = fieldsSet.Sequence, Hash = node.PreviousTxnID ?? fieldsSet.PreviousTxnID
};
boughtEffect.Paid = AmountSubtract(node.PreviousFields.TakerPays, fieldsSet.TakerPays);
boughtEffect.Got = AmountSubtract(node.PreviousFields.TakerGets, fieldsSet.TakerGets);
boughtEffect.Type = sell ? OfferEffectType.Bought : OfferEffectType.Sold;
}
// add price
if (offerEffect != null && offerEffect.GotOrPays != null && offerEffect.PaidOrGets != null)
{
var created = offerEffect.Effect == EffectType.OfferCreated && offerEffect.Type == OfferEffectType.Buy;
var funded = offerEffect.Effect == EffectType.OfferFunded && offerEffect.Type == OfferEffectType.Bought;
var cancelled = offerEffect.Effect == EffectType.OfferCancelled && offerEffect.Type == OfferEffectType.Buy;
var bought = offerEffect.Effect == EffectType.OfferBought && offerEffect.Type == OfferEffectType.Bought;
var partially_funded = offerEffect.Effect == EffectType.OfferPartiallyFunded && offerEffect.Type == OfferEffectType.Bought;
var offerFunded = created || funded || cancelled || bought || partially_funded;
offerEffect.Price = GetPrice(offerEffect.GotOrPays, offerEffect.PaidOrGets, offerFunded);
}
nodeEffect = offerEffect;
}
else if (node.LedgerEntryType == "AccountRoot")
{
if (result.Type == TxResultType.OfferEffect)
{
if (fieldsSet.RegularKey == account)
{
var regularKeyEffect = new SetRegularKeyEffect();
nodeEffect = regularKeyEffect;
regularKeyEffect.Type = "null";
regularKeyEffect.Account = fieldsSet.Account;
regularKeyEffect.RegularKey = account;
}
}
}
if (nodeEffect != null)
{
effects.Add(nodeEffect);
if (diffType == DiffType.DeletedNode && nodeEffect.Effect != EffectType.OfferBought)
{
nodeEffect.Deleted = true;
}
}
}
return(effects.ToArray());
}
