Raccoon Client for Javascript

A JS client library for Raccoon, compatible both in browsers as well as nodejs environment.

Features:

• Send JSON/Protobuf encoded messages to raccoon server
• Configurable request wiretype i.e.,JSON/PROTOBUF
• Retry mechanism

Note: For encoding protobuf messages, this client utilises protobufjs.

Requirements

• Node.js: Version 20.x or above.
• Browser: Modern web browser with ES6+ compatibility.

Install

npm i @raystack/raccoon --save

Usage

Construct a new REST client, then pass the available options on the client.

For example:

import { RaccoonClient, SerializationType, WireType } from '@raystack/raccoon';

const raccoonClient = new RaccoonClient({
    serializationType: SerializationType.PROTOBUF,
    wireType: WireType.JSON,
    timeout: 5000,
    url: 'http://localhost:8080/api/v1/events',
    headers: {
        'X-User-ID': 'user-1'
    }
});

Send messages

In the below example, we are sending protobuf messages.

Note: In this case, we only need to send the protobufjs object along with values, the client will take care of encoding the object.

const pageEvent = new clickevents.PageEvent();
pageEvent.eventGuid = "123";
pageEvent.eventName = "page open";

const clickEvent = new clickevents.ClickEvent();
clickEvent.eventGuid = "123";
clickEvent.componentIndex = 1;
clickEvent.componentName = "images";

const events = [
    {
        type: 'test-topic1',
        data: clickEvent
    },
    {
        type: 'test-topic2',
        data: pageEvent
    }
];

raccoonClient.send(events)
    .then(result => {
        console.log('Result:', result);
    })
    .catch(error => {
        console.error('Error:', error);
    });

Note: Here, the PageEvent and ClickEvent are imported from generated protobufjs code.

See complete examples for sending JSON and protobuf messages: examples

Configurations

SerializationType

The serialization type to use for the events being sent to Kafka, either 'PROTOBUF' or 'JSON'.

• Type: Required
• Example value: SerializationType.JSON

WireType

The wire configuration using which the request payload should be sent to raccoon server

• Type: Required
• Example value: WireType.JSON

url

The URL for the raccoon server.

• Type: Required
• Example value: http://localhost:8080/api/v1/events

headers

Custom headers to be included in the HTTP requests.

• Type: Optional
• Default value: {}

timeout

The request timeout in milliseconds.

• Type: Optional
• Default value: 1000

retryMax

The maximum number of retry attempts for failed requests.

• Type: Optional
• Default value: 3

retryWait

The time in milliseconds to wait between retry attempts.

• Type: Optional
• Default value: 5000

logger

Logger object for logging.

• Type: Optional
• Default value: console

Setting up development environment

Prerequisite Tools

• Node.js (version >= 20.x)
• Git

1. Clone the repo

   $ git clone https://github.com/raystack/raccoon
   $ cd raccoon/clients/js

2. Install dependencies

   $ npm install

3. Run the tests. All of the tests are written with jest.

   $ npm test

4. Run format.

   $ npm run format

5. Run lint.

   $ npm run lint

Versioning

We use SemVer for versioning. For the versions available, see the tags.