io.motown.ocpp.soaputils.async.StartTransactionFutureEventCallback Maven / Gradle / Ivy

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/**
 * Copyright (C) 2013 Motown.IO ([email protected])
 *
 * 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 io.motown.ocpp.soaputils.async;

import io.motown.domain.api.chargingstation.*;
import io.motown.domain.api.security.AddOnIdentity;
import io.motown.ocpp.viewmodel.domain.DomainService;
import io.motown.ocpp.viewmodel.domain.FutureEventCallback;
import io.motown.ocpp.viewmodel.persistence.entities.Transaction;
import org.apache.cxf.continuations.Continuation;
import org.axonframework.domain.EventMessage;

import java.util.Date;

/**
 * Future event callback for the start transaction action. Before starting a transaction the identification that starts the
 * transaction needs to be validated. It could be that the charging station has an outdated local list of identifications.
 */
public class StartTransactionFutureEventCallback extends FutureEventCallback implements ContinuationFutureCallback {

    private Continuation continuation;

    private DomainService domainService;

    private EvseId evseId;

    private ChargingStationId chargingStationId;

    private String protocolIdentifier;

    private ReservationId reservationId;

    private AddOnIdentity addOnIdentity;

    private IdentifyingToken identifyingToken;

    private int meterStart;

    private Date timestamp;

    public StartTransactionFutureEventCallback(DomainService domainService, EvseId evseId, ChargingStationId chargingStationId,
                                               String protocolIdentifier, ReservationId reservationId, AddOnIdentity addOnIdentity,
                                               IdentifyingToken identifyingToken, int meterStart, Date timestamp) {
        this.domainService = domainService;
        this.evseId = evseId;
        this.chargingStationId = chargingStationId;
        this.protocolIdentifier = protocolIdentifier;
        this.reservationId = reservationId;
        this.addOnIdentity = addOnIdentity;
        this.identifyingToken = identifyingToken;
        this.meterStart = meterStart;
        this.timestamp = timestamp != null ? new Date(timestamp.getTime()) : null;
    }

    /**
     * Handles the {@code AuthorizationResultEvent} (other events will directly result in 'false' return value). In the
     * flow of handling a start transaction message the first step is to authorize the identification used to start
     * the transaction. This method handles that event and uses the domain service to start the transaction and sets the
     * result of the start transaction using 'setResult'. The continuation, if it exists, is resumed.
     *
     * @param event Authorizaton result event.
     * @return true if the event has been handled, false if the event was the wrong type.
     */
    @Override
    public boolean onEvent(EventMessage event) {
        AuthorizationResultEvent resultEvent;

        if (!(event.getPayload() instanceof AuthorizationResultEvent)) {
            // not the right type of event... not 'handled'
            return false;
        }

        resultEvent = (AuthorizationResultEvent) event.getPayload();

        Transaction transaction = domainService.createTransaction(evseId);
        NumberedTransactionId transactionId = new NumberedTransactionId(chargingStationId, protocolIdentifier, transaction.getId().intValue());

        domainService.startTransactionNoAuthorize(transactionId, evseId, chargingStationId, reservationId, addOnIdentity, identifyingToken, meterStart, timestamp);

        StartTransactionFutureResult futureResult = new StartTransactionFutureResult();
        futureResult.setAuthorizationResultStatus(resultEvent.getAuthenticationStatus());
        futureResult.setTransactionId(transactionId.getNumber());

        this.setResult(futureResult);

        this.countDownLatch();

        if (continuation != null) {
            // no need to wait for the continuation timeout, resume it now
            continuation.resume();
        }

        return true;
    }

    @Override
    public void setContinuation(Continuation continuation) {
        this.continuation = continuation;
    }

}