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Merge pull request #5001 from chimp1984/deactivate-open-offer-if-trig…
…ger-price-is-reached Deactivate open offer if trigger price is reached
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core/src/main/java/bisq/core/offer/TriggerPriceService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| /* | ||
| * This file is part of Bisq. | ||
| * | ||
| * Bisq is free software: you can redistribute it and/or modify it | ||
| * under the terms of the GNU Affero General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or (at | ||
| * your option) any later version. | ||
| * | ||
| * Bisq is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public | ||
| * License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with Bisq. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
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| package bisq.core.offer; | ||
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|
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| import bisq.core.locale.CurrencyUtil; | ||
| import bisq.core.monetary.Altcoin; | ||
| import bisq.core.monetary.Price; | ||
| import bisq.core.provider.price.MarketPrice; | ||
| import bisq.core.provider.price.PriceFeedService; | ||
|
|
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| import bisq.common.util.MathUtils; | ||
|
|
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| import org.bitcoinj.utils.Fiat; | ||
|
|
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| import javax.inject.Inject; | ||
| import javax.inject.Singleton; | ||
|
|
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| import javafx.collections.ListChangeListener; | ||
|
|
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| import java.util.HashMap; | ||
| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Objects; | ||
| import java.util.Set; | ||
|
|
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| import lombok.extern.slf4j.Slf4j; | ||
|
|
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| import static bisq.common.util.MathUtils.roundDoubleToLong; | ||
| import static bisq.common.util.MathUtils.scaleUpByPowerOf10; | ||
|
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| @Slf4j | ||
| @Singleton | ||
| public class TriggerPriceService { | ||
| private final OpenOfferManager openOfferManager; | ||
| private final PriceFeedService priceFeedService; | ||
| private final Map<String, Set<OpenOffer>> openOffersByCurrency = new HashMap<>(); | ||
|
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| @Inject | ||
| public TriggerPriceService(OpenOfferManager openOfferManager, PriceFeedService priceFeedService) { | ||
| this.openOfferManager = openOfferManager; | ||
| this.priceFeedService = priceFeedService; | ||
| } | ||
|
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| public void onAllServicesInitialized() { | ||
| openOfferManager.getObservableList().addListener((ListChangeListener<OpenOffer>) c -> { | ||
| c.next(); | ||
| if (c.wasAdded()) { | ||
| onAddedOpenOffers(c.getAddedSubList()); | ||
| } | ||
| if (c.wasRemoved()) { | ||
| onRemovedOpenOffers(c.getRemoved()); | ||
| } | ||
| }); | ||
| onAddedOpenOffers(openOfferManager.getObservableList()); | ||
|
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| priceFeedService.updateCounterProperty().addListener((observable, oldValue, newValue) -> onPriceFeedChanged()); | ||
| onPriceFeedChanged(); | ||
| } | ||
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| private void onPriceFeedChanged() { | ||
| openOffersByCurrency.keySet().stream() | ||
| .map(priceFeedService::getMarketPrice) | ||
| .filter(Objects::nonNull) | ||
| .filter(marketPrice -> openOffersByCurrency.containsKey(marketPrice.getCurrencyCode())) | ||
| .forEach(marketPrice -> { | ||
| openOffersByCurrency.get(marketPrice.getCurrencyCode()).stream() | ||
| .filter(openOffer -> !openOffer.isDeactivated()) | ||
| .forEach(openOffer -> checkPriceThreshold(marketPrice, openOffer)); | ||
| }); | ||
| } | ||
|
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| public static boolean wasTriggered(MarketPrice marketPrice, OpenOffer openOffer) { | ||
| Price price = openOffer.getOffer().getPrice(); | ||
| if (price == null) { | ||
| return false; | ||
| } | ||
|
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| String currencyCode = openOffer.getOffer().getCurrencyCode(); | ||
| boolean cryptoCurrency = CurrencyUtil.isCryptoCurrency(currencyCode); | ||
| int smallestUnitExponent = cryptoCurrency ? | ||
| Altcoin.SMALLEST_UNIT_EXPONENT : | ||
| Fiat.SMALLEST_UNIT_EXPONENT; | ||
| long marketPriceAsLong = roundDoubleToLong( | ||
| scaleUpByPowerOf10(marketPrice.getPrice(), smallestUnitExponent)); | ||
| long triggerPrice = openOffer.getTriggerPrice(); | ||
| if (triggerPrice <= 0) { | ||
| return false; | ||
| } | ||
|
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| OfferPayload.Direction direction = openOffer.getOffer().getDirection(); | ||
| boolean isSellOffer = direction == OfferPayload.Direction.SELL; | ||
| boolean condition = isSellOffer && !cryptoCurrency || !isSellOffer && cryptoCurrency; | ||
| return condition ? | ||
| marketPriceAsLong < triggerPrice : | ||
| marketPriceAsLong > triggerPrice; | ||
| } | ||
|
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| private void checkPriceThreshold(MarketPrice marketPrice, OpenOffer openOffer) { | ||
| if (wasTriggered(marketPrice, openOffer)) { | ||
| String currencyCode = openOffer.getOffer().getCurrencyCode(); | ||
| int smallestUnitExponent = CurrencyUtil.isCryptoCurrency(currencyCode) ? | ||
| Altcoin.SMALLEST_UNIT_EXPONENT : | ||
| Fiat.SMALLEST_UNIT_EXPONENT; | ||
| long triggerPrice = openOffer.getTriggerPrice(); | ||
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| log.info("Market price exceeded the trigger price of the open offer.\n" + | ||
| "We deactivate the open offer with ID {}.\nCurrency: {};\nOffer direction: {};\n" + | ||
| "Market price: {};\nTrigger price: {}", | ||
| openOffer.getOffer().getShortId(), | ||
| currencyCode, | ||
| openOffer.getOffer().getDirection(), | ||
| marketPrice.getPrice(), | ||
| MathUtils.scaleDownByPowerOf10(triggerPrice, smallestUnitExponent) | ||
| ); | ||
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| openOfferManager.deactivateOpenOffer(openOffer, () -> { | ||
| }, errorMessage -> { | ||
| }); | ||
| } | ||
| } | ||
|
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| private void onAddedOpenOffers(List<? extends OpenOffer> openOffers) { | ||
| openOffers.forEach(openOffer -> { | ||
| String currencyCode = openOffer.getOffer().getCurrencyCode(); | ||
| openOffersByCurrency.putIfAbsent(currencyCode, new HashSet<>()); | ||
| openOffersByCurrency.get(currencyCode).add(openOffer); | ||
|
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| MarketPrice marketPrice = priceFeedService.getMarketPrice(openOffer.getOffer().getCurrencyCode()); | ||
| if (marketPrice != null) { | ||
| checkPriceThreshold(marketPrice, openOffer); | ||
| } | ||
| }); | ||
| } | ||
|
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| private void onRemovedOpenOffers(List<? extends OpenOffer> openOffers) { | ||
| openOffers.forEach(openOffer -> { | ||
| String currencyCode = openOffer.getOffer().getCurrencyCode(); | ||
| if (openOffersByCurrency.containsKey(currencyCode)) { | ||
| Set<OpenOffer> set = openOffersByCurrency.get(currencyCode); | ||
| set.remove(openOffer); | ||
| if (set.isEmpty()) { | ||
| openOffersByCurrency.remove(currencyCode); | ||
| } | ||
| } | ||
| }); | ||
| } | ||
| } |
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