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Add check at offerer for trade price

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This commit is contained in:
Manfred Karrer 2016-04-15 12:03:30 +02:00
parent 261a037020
commit 461aa9bd7f
8 changed files with 50 additions and 17 deletions
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1
core/src/main/java/io/bitsquare/trade/protocol/trade/ProcessModel.java
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@ -68,7 +68,6 @@ public class ProcessModel implements Model, Serializable {
transient private KeyRing keyRing;
transient private P2PService p2PService;
// Mutable
public final TradingPeer tradingPeer;
transient private TradeMessage tradeMessage;

22
core/src/main/java/io/bitsquare/trade/protocol/trade/tasks/offerer/ProcessPayDepositRequest.java
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@ -26,6 +26,7 @@ import io.bitsquare.trade.Trade;
import io.bitsquare.trade.protocol.trade.messages.PayDepositRequest;
import io.bitsquare.trade.protocol.trade.tasks.TradeTask;
import org.bitcoinj.core.Coin;
import org.bitcoinj.utils.Fiat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -76,8 +77,27 @@ public class ProcessPayDepositRequest extends TradeTask {
if (payDepositRequest.acceptedArbitratorNodeAddresses.size() < 1)
failed("acceptedArbitratorNames size must be at least 1");
trade.setArbitratorNodeAddress(checkNotNull(payDepositRequest.arbitratorNodeAddress));
long takersTradePrice = payDepositRequest.tradePrice;
checkArgument(takersTradePrice > 0);
Fiat tradePriceAsFiat = Fiat.valueOf(trade.getOffer().getCurrencyCode(), takersTradePrice);
Fiat offerPriceAsFiat = trade.getOffer().getPrice();
double factor = (double) takersTradePrice / (double) offerPriceAsFiat.value;
// We allow max. 2 % difference between own offer price calculation and takers calculation.
// Market price might be different at offerers and takers side so we need a bit of tolerance.
// The tolerance will get smaller once we have multiple price feeds avoiding fast price fluctuations
// from one provider.
if (Math.abs(1 - factor) > 0.02) {
String msg = "Takers tradePrice is outside our market price tolerance.\n" +
"tradePriceAsFiat=" + tradePriceAsFiat.toFriendlyString() + "\n" +
"offerPriceAsFiat=" + offerPriceAsFiat.toFriendlyString();
log.warn(msg);
failed(msg);
}
trade.setTradePrice(takersTradePrice);
checkArgument(payDepositRequest.tradeAmount > 0);
trade.setTradePrice(payDepositRequest.tradePrice);
trade.setTradeAmount(Coin.valueOf(payDepositRequest.tradeAmount));
// update to the latest peer address of our peer if the payDepositRequest is correct

12
core/src/main/java/io/bitsquare/user/Preferences.java
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@ -110,6 +110,7 @@ public final class Preferences implements Persistable {
private double maxPriceDistanceInPercent;
private boolean useInvertedMarketPrice;
private boolean useStickyMarketPrice = false;
private boolean usePercentageBasedPrice = false;
// Observable wrappers
transient private final StringProperty btcDenominationProperty = new SimpleStringProperty(btcDenomination);
@ -162,6 +163,7 @@ public final class Preferences implements Persistable {
// useTorForBitcoinJ = persisted.getUseTorForBitcoinJ();
useTorForBitcoinJ = false;
useStickyMarketPrice = persisted.getUseStickyMarketPrice();
usePercentageBasedPrice = persisted.getUsePercentageBasedPrice();
showOwnOffersInOfferBook = persisted.getShowOwnOffersInOfferBook();
maxPriceDistanceInPercent = persisted.getMaxPriceDistanceInPercent();
// Backward compatible to version 0.3.6. Can be removed after a while
@ -368,6 +370,12 @@ public final class Preferences implements Persistable {
storage.queueUpForSave();
}
public void setUsePercentageBasedPrice(boolean usePercentageBasedPrice) {
this.usePercentageBasedPrice = usePercentageBasedPrice;
storage.queueUpForSave();
}
///////////////////////////////////////////////////////////////////////////////////////////
// Getter
///////////////////////////////////////////////////////////////////////////////////////////
@ -488,6 +496,10 @@ public final class Preferences implements Persistable {
return useStickyMarketPrice;
}
public boolean getUsePercentageBasedPrice() {
return usePercentageBasedPrice;
}
///////////////////////////////////////////////////////////////////////////////////////////
// Private