org.fineract.module.stellar.listener.StellarAdjustOfferEventListener.java Source code

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Here is the source code for org.fineract.module.stellar.listener.StellarAdjustOfferEventListener.java

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/**
 * Copyright 2016 Myrle Krantz
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.fineract.module.stellar.listener;

import javafx.util.Pair;
import org.fineract.module.stellar.federation.StellarAccountId;
import org.fineract.module.stellar.horizonadapter.HorizonServerUtilities;
import org.fineract.module.stellar.horizonadapter.StellarOfferAdjustmentFailedException;
import org.fineract.module.stellar.persistencedomain.AccountBridgePersistency;
import org.fineract.module.stellar.persistencedomain.StellarAdjustOfferEventPersistency;
import org.fineract.module.stellar.repository.AccountBridgeRepository;
import org.fineract.module.stellar.repository.StellarAdjustOfferEventRepository;
import org.fineract.module.stellar.horizonadapter.InvalidConfigurationException;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.ApplicationListener;
import org.springframework.stereotype.Component;

@Component
public class StellarAdjustOfferEventListener implements ApplicationListener<StellarAdjustOfferEvent> {

    private final AccountBridgeRepository accountBridgeRepository;
    private final StellarAdjustOfferEventRepository stellarAdjustOfferEventRepository;
    private final HorizonServerUtilities horizonServerUtilities;
    private final ValueSynchronizer<Pair<String, String>> retrySynchronizer;
    private final Logger logger;

    @Autowired
    StellarAdjustOfferEventListener(final AccountBridgeRepository accountBridgeRepository,
            final StellarAdjustOfferEventRepository stellarAdjustOfferEventRepository,
            final HorizonServerUtilities horizonServerUtilities,
            final @Qualifier("stellarBridgeLogger") Logger logger) {
        this.accountBridgeRepository = accountBridgeRepository;
        this.stellarAdjustOfferEventRepository = stellarAdjustOfferEventRepository;
        this.horizonServerUtilities = horizonServerUtilities;
        this.retrySynchronizer = new ValueSynchronizer<>();
        this.logger = logger;
    }

    @Override
    public void onApplicationEvent(final StellarAdjustOfferEvent event) {
        final AccountBridgePersistency accountBridge = accountBridgeRepository
                .findByMifosTenantId(event.getMifosAccountId());

        retrySynchronizer.sync(new Pair<>(event.getMifosAccountId(), event.getAssetCode()), () -> {
            final StellarAdjustOfferEventPersistency eventSource = this.stellarAdjustOfferEventRepository
                    .findOne(event.getEventId());

            if (accountBridge == null) {
                eventSource.setOutstandingRetries(0);
                this.stellarAdjustOfferEventRepository.save(eventSource);
                return;
            }

            final Integer outstandingRetries = eventSource.getOutstandingRetries();
            final Boolean processed = eventSource.getProcessed();
            if (processed || (outstandingRetries <= 0))
                return;

            eventSource.setOutstandingRetries(outstandingRetries - 1);
            this.stellarAdjustOfferEventRepository.save(eventSource);

            try {
                horizonServerUtilities.adjustOffer(accountBridge.getStellarAccountPrivateKey(),
                        StellarAccountId.mainAccount(accountBridge.getStellarVaultAccountId()),
                        event.getAssetCode());

                eventSource.setProcessed(Boolean.TRUE);
                eventSource.setErrorMessage("");
                eventSource.setOutstandingRetries(0);
            } catch (final InvalidConfigurationException | StellarOfferAdjustmentFailedException ex) {
                eventSource.setProcessed(Boolean.FALSE);
                eventSource.setErrorMessage(ex.getMessage());
                if (outstandingRetries == 1) {
                    logger.error("Last offer adjustment attempt failed because: {}", ex.getMessage());
                }
            } finally {
                this.stellarAdjustOfferEventRepository.save(eventSource);
            }
        });
    }
}