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Juttle Client Library

Juttle Client Library is a set of frontend building blocks for creating applications that interact with outputs from juttle programs via juttle-service.

Build Status


Juttle Client Library consists of 5 distinct components: Views, Inputs, Errors, JobManager, and HttpApi.

Component Description
Views The Views class is used to run a bundle (a juttle program with its modules) against an instance of Juttle Service and render its output onto a provided DOM node.
Inputs Given a bundle, an inputs instance will render the bundle's inputs to specified DOM node.
Errors Given an error object returned from either juttle-service or juttle-viz, an Errors instance will render a user-friendly error message.
JobManager Interacts with the Juttle Service api to run and manage the lifecycle of a running Juttle Program. Emits events received from the Juttle Service streaming api.
HttpApi Client functions for interacting with the Juttle Service http api.

Additionally Juttle Client Library also exports these enums:

Enum Description
JobStatus An enum used to described the status of a given JobManager instance. Returned from the getStatus() method of JobManager. Possible values can be STOPPED, STARTING, RUNNING
ViewStatus Exactly the same as JobStatus only returned from the getStatus() of a Views instance.

Getting Started

npm install --save juttle-client-library

A quick example:

import { Views, Inputs } from 'juttle-client-library';

let views = new Views(JUTTLE_SERVICE_HOST, document.getElementById('views'));
let inputs = new Inputs(JUTTLE_SERVICE_HOST, document.getElementById('inputs'));

let bundle = {
    program: 'input person:text; emit | put greeting = "hello " + person'    


document.getElementById('btn-run').addEventListener('click', () => {
    .then(values =>, values));


See the example and test directory for how this library should be used. A more complete implementation can be see in juttle/juttle-viewer

Running Example

Prerequisite - Have a locally running instance of Juttle Service (or Juttle Engine) on port 8080 (you can adjust the location by changing line 6 of example/index.js).

Here's how to run this library locally from this repo (also used for development purposes):

$ git clone
$ cd juttle-client-library
$ npm install
$ cd example
$ ./server.js