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Open Charge Point Protocol (OCPP. The common parts of the different OCPP specifications are handled here. The SOAP and JSON web socket modules communicate with the core via this module. This module also handles the events sent out by the core.

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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.viewmodel;

import io.motown.domain.api.chargingstation.ChargingStationAcceptedEvent;
import io.motown.domain.api.chargingstation.ChargingStationBootedEvent;
import io.motown.domain.api.chargingstation.ChargingStationConfiguredEvent;
import io.motown.domain.api.chargingstation.ChargingStationCreatedEvent;
import io.motown.ocpp.viewmodel.persistence.entities.ChargingStation;
import io.motown.ocpp.viewmodel.persistence.repositories.ChargingStationRepository;
import org.axonframework.eventhandling.annotation.EventHandler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class OcppEventHandler {
    
    private static final Logger LOG = LoggerFactory.getLogger(io.motown.ocpp.viewmodel.OcppEventHandler.class);

    private ChargingStationRepository chargingStationRepository;

    @EventHandler
    public void handle(ChargingStationCreatedEvent event) {
        LOG.info("Handling ChargingStationCreatedEvent");
        String chargingStationId = event.getChargingStationId().getId();
        ChargingStation chargingStation = chargingStationRepository.findOne(chargingStationId);

        if (chargingStation == null) {
            chargingStation = new ChargingStation(chargingStationId);
            chargingStationRepository.createOrUpdate(chargingStation);
        }
    }

    @EventHandler
    public void handle(ChargingStationBootedEvent event) {
        LOG.info("Handling ChargingStationBootedEvent");

        ChargingStation chargingStation = chargingStationRepository.findOne(event.getChargingStationId().getId());

        if (chargingStation != null) {
            chargingStation.setProtocol(event.getProtocol());
            chargingStationRepository.createOrUpdate(chargingStation);
        } else {
            LOG.info("OCPP module repo could not find charging station {} and set the protocol", event.getChargingStationId());
        }
    }

    @EventHandler
    public void handle(ChargingStationAcceptedEvent event) {
        LOG.debug("ChargingStationAcceptedEvent for [{}] received!", event.getChargingStationId());

        ChargingStation chargingStation = chargingStationRepository.findOne(event.getChargingStationId().getId());

        if (chargingStation != null) {
            chargingStation.setRegistered(true);
            chargingStationRepository.createOrUpdate(chargingStation);
        } else {
            LOG.info("OCPP module repo COULD NOT FIND CHARGEPOINT {} and mark it as registered", event.getChargingStationId());
        }
    }

    @EventHandler
    public void handle(ChargingStationConfiguredEvent event) {
        LOG.info("ChargingStationConfiguredEvent");

        String chargingStationId = event.getChargingStationId().getId();
        ChargingStation chargingStation = chargingStationRepository.findOne(chargingStationId);

        if (chargingStation == null) {
            LOG.info("Received a ChargingStationConfiguredEvent for unknown charging station. Creating the chargingStation.");
            chargingStation = new ChargingStation(chargingStationId);
        }

        chargingStation.setNumberOfEvses(event.getEvses().size());
        chargingStation.setConfigured(true);
        chargingStationRepository.createOrUpdate(chargingStation);
    }

    public void setChargingStationRepository(ChargingStationRepository chargingStationRepository) {
        this.chargingStationRepository = chargingStationRepository;
    }
}