danmgs/Elasticsearch-Nodejs.Quickstart

An application using Elasticsearch with nodejs to expose web microservices (Express.js / Angular 4 / Node.js)

Elasticsearch.Nodejs.QuickStart (2018)

An application that exposes microservices under web api, by leveraging the greatness of Elasticsearch with nodejs.

Folders Organisation

Overview

| -- /public
     | -- packages.json
     | -- /src 
          | -- /app  
                | -- /services 
                | -- /Shared               -> contains all models
                | -- /views
| -- /server
     | -- packages.json                    
     | -- /datasamples 
     | -- /src 
          | -- /controllers  
          | -- /routes 
          | -- /shared                     -> contains all models
          | -- /test                       -> tests driven development using Mocha
| -- packages.json                         -> contains global npm commands for public + server's packages.json files.

Prerequisites and setup

Seed ElastictSearch cluster with data.

1. Start elasticsearch cluster first.

2. In order to create the product index, the data file is available in server\datasamples directory.

Command to bulk insert products from file products-bulk.json :

POST /product/default/_bulk
[put here file content]

3. Activate/Deactivate the server-side trace of elasticsearch client in elastic_config.js :

const esclient = new elasticsearch.Client({
  host: 'localhost:9200',
  log: 'trace'
});

Install npm packages

1. For each directories public and server, install packages using this following command:

npm install

Launch server and client programs :

1. In the root directory, open 2 separate terminals and type following commands in the order :

1.1. To start ElasticSearch Cluster on server-side:

npm run start:server:es

2.2. Then, to start client and server:

npm start

3. Launch web client on a browser using url:\

http://localhost:4200/

Green light means server is up.

Red light means server is down.
Reason is elasticsearch cluster down and need to be started. Check step 1.1.

Launch unit tests for server-side :

1. To launch unit tests (server must be shutdown), make sure elasticsearch cluster is started.

npm run test:server

2. To launch tests with minimal logs:

npm run test:server:noverbose

Useful links

https://marcobonzanini.com/2015/02/09/phrase-match-and-proximity-search-in-elasticsearch/