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Open Charge Point Protocol (OCPP). Provides a JSON web socket endpoint based on OCPP 1.5.

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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.websocketjson.request.handler;

import com.google.gson.Gson;
import io.motown.domain.api.chargingstation.*;
import io.motown.domain.api.security.AddOnIdentity;
import io.motown.ocpp.viewmodel.domain.DomainService;
import io.motown.ocpp.websocketjson.schema.generated.v15.Metervalues;
import io.motown.ocpp.websocketjson.schema.generated.v15.MetervaluesResponse;
import io.motown.ocpp.websocketjson.schema.generated.v15.Value;
import io.motown.ocpp.websocketjson.schema.generated.v15.Value_;
import org.atmosphere.websocket.WebSocket;

import java.util.ArrayList;
import java.util.List;

public class MeterValuesRequestHandler extends RequestHandler {

    private String protocolIdentifier;

    private Gson gson;

    private DomainService domainService;

    private AddOnIdentity addOnIdentity;

    public MeterValuesRequestHandler(Gson gson, DomainService domainService, String protocolIdentifier, AddOnIdentity addOnIdentity) {
        this.gson = gson;
        this.domainService = domainService;
        this.protocolIdentifier = protocolIdentifier;
        this.addOnIdentity = addOnIdentity;
    }

    @Override
    public void handleRequest(ChargingStationId chargingStationId, String callId, String payload, WebSocket webSocket) {
        Metervalues request = gson.fromJson(payload, Metervalues.class);

        List meterValues = new ArrayList<>();
        for (Value meterValue : request.getValues()) {
            for (Value_ value : meterValue.getValues()) {
                ReadingContext readingContext = new ReadingContextTranslator(value.getContext()).translate();
                ValueFormat valueFormat = new ValueFormatTranslator(value.getFormat()).translate();
                Location location = new LocationTranslator(value.getLocation()).translate();
                Measurand measurand = new MeasurandTranslator(value.getMeasurand()).translate();
                UnitOfMeasure unitOfMeasure = new UnitOfMeasureTranslator(value.getUnit()).translate();

                meterValues.add(new MeterValue(meterValue.getTimestamp(), value.getValue(), readingContext, valueFormat, measurand, location, unitOfMeasure));
            }
        }

        TransactionId transactionId = null;
        Integer requestTransactionId = request.getTransactionId();
        if (requestTransactionId != null && requestTransactionId > 0) {
            transactionId = new NumberedTransactionId(chargingStationId, protocolIdentifier, requestTransactionId);
        }

        domainService.meterValues(chargingStationId, transactionId, new EvseId(request.getConnectorId()), meterValues, addOnIdentity);

        writeResponse(webSocket, new MetervaluesResponse(), callId, gson);
    }

}




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