Elasticsearch Spring Boot Spring Data

🏆 Starter example for using Elasticsearch repository with Springboot

DEPRECATED

TransportClient is deprecated as of Elasticsearch 7 and will be removed in Elasticsearch 8. Spring Data Elasticsearch will support the TransportClient as long as it is available in the used Elasticsearch version but has deprecated the classes using it since version 4.0.

For recommended High Level REST Client refer this repository : https://github.com/Nasruddin/spring-elasticsearch-rest-high-level-client

Requirement

• Java 8
• Docker
• Head: Elasticsearch Chrome 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

docker run -d -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" elasticsearch:6.8.3

• Open browser and hit localhost:9300 and you should see below response

{
name: "x3oSjQ4",
cluster_name: "docker-cluster",
cluster_uuid: "SWR0yJPwRw2X0wNbq1R8pA",
    version: {
    number: "6.8.3",
    build_flavor: "default",
    build_type: "docker",
    build_hash: "0c48c0e",
    build_date: "2019-08-29T19:05:24.312154Z",
    build_snapshot: false,
    lucene_version: "7.7.0",
    minimum_wire_compatibility_version: "5.6.0",
    minimum_index_compatibility_version: "5.0.0"
    },
tagline: "You Know, for Search"
}

• Now run Spring Boot application using below command

mvn spring-boot:run

• Once application starts successfully, open Elastic plugin in Google Chrome.
• You should be able to see our data being stored in elastic server. Refer image below

• Now open a REST Client or CURL. I am using Postman. And add some data to indices.

Extra Points

Additional endpoints exposed to get elastic details and clearing indices.

• http://localhost:8080/elastic/clear-indices
• http://localhost:8080/elastic/details