Elasticsearch Engine

:trophy: 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://github.com/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:

• 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.

• http://localhost:8888/elastic-cluster/clear-indices
• http://localhost:8888/elastic-cluster/info

WIP

• More APIs to be added
• Test containers