Elasticsearch Engine

🏆 Sample Elasticsearch engine using Reactive Spring Data.

Feature

Read CSV and persist data in your elasticsearch cluster
Add, search and filter data
Basic operation to play around with elastic cluster
Application fully reactive and non blocking

For High Level REST Client; please refer this repository : https://awesomeopensource.com/project/Nasruddin/spring-elasticsearch-rest-high-level-client

Requirement

Java 8+
Docker Compose
ElasticVue: Elasticsearch Firefox Extension

Note

Please download ElasticSearch of 2.4.x if you are using Spring Boot 1.5.x. If you don't use correct versions then you should get following error:

java.lang.IllegalStateException: Received message from unsupported version: [2.0.0] minimal compatible version is: [5.0.0]

Also, if you are update Spring Boot to 2.x.x please download/run elasticsearch 6.8.3 version. If not you might face following issue:

failed to load elasticsearch nodes : org.elasticsearch.client.transport.NoNodeAvailableException: 
None of the configured nodes are available: [{#transport#-1}{uWHhZacNR9mbfojQOayyAg}{127.0.0.1}{127.0.0.1:9300}]

Running the sample app

Install and run Elastic Server 6.8.3

cd docker 
docker compose -f docker-compose-elastic.yml up

Build the project and create an Image out of it

mvn clean install
docker compose up

Open browser and hit localhost:9200 and you should see below response

{
    name: "elasticsearch",
    cluster_name: "docker-cluster",
    cluster_uuid: "49K60TXkQ0CW7utAmS8RFg",
    version: {
        number: "7.12.1",
        build_flavor: "default",
        build_type: "docker",
        build_hash: "3186837139b9c6b6d23c3200870651f10d3343b7",
        build_date: "2021-04-20T20:56:39.040728659Z",
        build_snapshot: false,
        lucene_version: "8.8.0",
        minimum_wire_compatibility_version: "6.8.0",
        minimum_index_compatibility_version: "6.0.0-beta1"
    },
    tagline: "You Know, for Search"
}

You can access cluster info using curl cmd in your terminal

curl localhost:8888/elastic-cluster/info

Below output should be seen post your curl cmd
Once elasticsearch server and application starts successfully, open swagger UI using http://localhost:8888/swagger-ui/index.html
Execute /movie/generate under movie-resource to populate your elasticsearch engine. As soon as you execute the resource; you should be able to see data in GUI for elasticsearch, in my ElasticVue for firefox. Refer below image:

Alt text

Now you should have enough data to play around with. Also, you can persist you own data.

Extra Points

Additional endpoints exposed to get elastic details and clearing indices.

WIP

More APIs to be added
Test containers