@citrineos/reporting/dist/module/services.js

The reporting module for OCPP v2.0.1. This module is not intended to be used directly, but rather as a dependency for other modules.

import { VariableAttribute } from '@citrineos/data';
import { OCPP2_0_1 } from '@citrineos/base';
export class DeviceModelService {
    _deviceModelRepository;
    constructor(deviceModelRepository) {
        this._deviceModelRepository = deviceModelRepository;
    }
    /**
     * Fetches the ItemsPerMessage attribute from the device model.
     * Returns null if no such attribute exists.
     * @param stationId Charging station identifier.
     * @returns ItemsPerMessage as a number or null if no such attribute exists.
     */
    async getItemsPerMessageByComponentAndVariableInstanceAndStationId(componentName, variableInstance, tenantId, stationId) {
        const itemsPerMessageAttributes = await this._deviceModelRepository.readAllByQuerystring(tenantId, {
            tenantId: tenantId,
            stationId: stationId,
            component_name: componentName,
            variable_name: 'ItemsPerMessage',
            variable_instance: variableInstance,
            type: OCPP2_0_1.AttributeEnumType.Actual,
        });
        if (itemsPerMessageAttributes.length === 0) {
            return null;
        }
        else {
            // It is possible for itemsPerMessageAttributes.length > 1 if component instances or evses
            // are associated with alternate options. That structure is not supported by this logic, and that
            // structure is a violation of Part 2 - Specification of OCPP 2.0.1.
            return Number(itemsPerMessageAttributes[0].value);
        }
    }
    /**
     * Fetches the BytesPerMessage attribute from the device model.
     * Returns null if no such attribute exists.
     * It is possible for there to be multiple BytesPerMessage attributes if component instances or evses
     * are associated with alternate options. That structure is not supported by this logic, and that
     * structure is a violation of Part 2 - Specification of OCPP 2.0.1.
     * In that case, the first attribute will be returned.
     * @param stationId Charging station identifier.
     * @returns BytesPerMessage as a number or null if no such attribute exists.
     */
    async getBytesPerMessageByComponentAndVariableInstanceAndStationId(componentName, variableInstance, tenantId, stationId) {
        const bytesPerMessageAttributes = await this._deviceModelRepository.readAllByQuerystring(tenantId, {
            tenantId: tenantId,
            stationId: stationId,
            component_name: componentName,
            variable_name: 'BytesPerMessage',
            variable_instance: variableInstance,
            type: OCPP2_0_1.AttributeEnumType.Actual,
        });
        if (bytesPerMessageAttributes.length === 0) {
            return null;
        }
        else {
            // It is possible for bytesPerMessageAttributes.length > 1 if component instances or evses
            // are associated with alternate options. That structure is not supported by this logic, and that
            // structure is a violation of Part 2 - Specification of OCPP 2.0.1.
            return Number(bytesPerMessageAttributes[0].value);
        }
    }
}
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