node-ocpi Library Documentation

Overview

node-ocpi is an advanced Node.js library designed for implementing the Open Charge Point Interface (OCPI) protocol. Offering structured models and comprehensive validation for various OCPI entities, it serves as an essential toolkit for developers in the electric vehicle (EV) charging station domain.

Features

• Extensive models for key OCPI entities including Location, EVSE, Connector, CDR, Command, Feedback, Meter, Reservation, Tariff, User, Transaction, Credentials, ChargingProfilePeriod, ChargingProfile, ActiveChargingProfile, ChargingProfileResponse, ActiveChargingProfileResult, ChargingProfileResult, ClearProfileResult, SetChargingProfile, CommandResult, CommandResponse, DisplayText, EnergyContract, LocationReferences, Token, AuthorizationInfo, and OCPIResponse.
• Robust validation for OCPI-compliant data structures to ensure data integrity and accuracy.
• Compatible with a wide range of OCPI operations and functionalities, enhancing EV charging station services development.

Installation

Install node-ocpi using npm:

npm install https://github.com/hyndex/node-ocpi

Usage

Import the required models from node-ocpi:

const {
    Location, EVSE, Connector, CDR, Command, Feedback, Meter, Reservation, Tariff, User, Transaction, Credentials,
    ChargingProfilePeriod, ChargingProfile, ActiveChargingProfile, ChargingProfileResponse, ActiveChargingProfileResult, ChargingProfileResult, ClearProfileResult, SetChargingProfile,
    CommandResult, CommandResponse,
    DisplayText, EnergyContract, LocationReferences, Token, AuthorizationInfo, OCPIResponse
} = require('node-ocpi');

Model Usage Examples

Location Example

const location = new Location({ /* Location data */ });
location.validate();

CommandResult Example

const commandResult = new CommandResult({
    result: 'ACCEPTED',
    message: 'Command successfully executed'
});
commandResult.validate();

CommandResponse Example

const commandResponse = new CommandResponse({
    result: 'REJECTED',
    timeout: 30,
    message: 'Command could not be executed'
});
commandResponse.validate();

OCPIResponse Example

const ocpiResponse = new OCPIResponse({
    statusCode: 2000,
    statusMessage: 'Success',
    timestamp: new Date().toISOString(),
    data: { /* Your data object or array */ }
});
OCPIResponse.schema(YOUR_MODEL_SCHEMA).validate(ocpiResponse);

... (Continue with other models similarly)

Integration with Express.js

Integrate node-ocpi in Express.js applications for efficient handling of OCPI data:

const express = require('express');
const { Location } = require('node-ocpi');

const app = express();
app.use(express.json());

app.post('/locations', (req, res) => {
  try {
    const location = new Location(req.body);
    location.validate();
    res.status(201).send(location);
  } catch (error) {
    res.status(400).send(error.message);
  }
});

app.listen(3000, () => {
  console.log('Server running on port 3000');
});

Contributing

Contributions are welcome:

1. Fork the repository.
2. Create a new feature branch.
3. Develop your feature or fix.
4. Write or adapt tests.
5. Update the documentation.
6. Commit and push your changes.
7. Submit a pull request.

License

node-ocpi is released under the MIT License. See LICENSE for details.