@citrineos/data/dist/layers/sequelize/repository/ChargingStationSequence.js

The OCPP data module which includes all persistence layer implementation.

import { Sequelize } from 'sequelize-typescript';
import { Logger } from 'tslog';
import { ChargingStationSequence } from '../model/index.js';
import { SequelizeRepository } from './Base.js';
export class SequelizeChargingStationSequenceRepository extends SequelizeRepository {
    static SEQUENCE_START = 1;
    constructor(config, logger, sequelizeInstance) {
        super(config, ChargingStationSequence.MODEL_NAME, logger, sequelizeInstance);
    }
    /**
     * Converts a Sequelize bigint value to a JavaScript number.
     * Sequelize returns PostgreSQL BIGINT columns as strings to avoid precision loss,
     * but OCPP requires numeric types (e.g., requestId in GetChargingProfilesRequest).
     *
     * @param value - The value from Sequelize (may be string or number)
     * @returns A JavaScript number
     */
    _ensureNumber(value) {
        if (value === null || value === undefined) {
            return SequelizeChargingStationSequenceRepository.SEQUENCE_START;
        }
        if (typeof value === 'string') {
            const parsed = parseInt(value, 10);
            if (isNaN(parsed)) {
                return SequelizeChargingStationSequenceRepository.SEQUENCE_START;
            }
            return parsed;
        }
        return Number(value);
    }
    async getNextSequenceValue(tenantId, stationId, type) {
        return await this.s.transaction(async (transaction) => {
            const [storedSequence, sequenceCreated] = await this.readOrCreateByQuery(tenantId, {
                where: {
                    tenantId: tenantId,
                    stationId: stationId,
                    type: type,
                },
                defaults: {
                    value: SequelizeChargingStationSequenceRepository.SEQUENCE_START,
                },
                transaction,
            });
            if (!sequenceCreated) {
                await storedSequence.increment('value', { transaction });
                await storedSequence.reload({ transaction });
            }
            return this._ensureNumber(storedSequence.get('value'));
        });
    }
}
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