dbclient-engine-search

name	dbclient-engine-search
description	Search / log-retrieval engines in DBClient: Elasticsearch 8.x and OpenSearch. Use this skill when adding, debugging, or modifying such a Tester.

DBClient Engine: Search

Covered Testers and Aliases

Engine	Tester	Aliases
Elasticsearch 8.x	ElasticSearchTester.java	elasticsearch, elasticsearch8, elastic, es
Elasticsearch 7.x / OpenSearch	OpenSearchTester.java	opensearch, elasticsearch7

Key Dependencies (build.gradle)

// Elasticsearch 8.x
implementation 'co.elastic.clients:elasticsearch-java:8.8.2'

// OpenSearch / Elasticsearch 7.x
implementation 'org.opensearch.client:opensearch-rest-high-level-client:1.2.4'
implementation 'org.apache.httpcomponents.client5:httpclient5:5.2.1'

Key Concerns

• Elasticsearch 8 and OpenSearch client APIs have diverged, hence two separate Testers.
• Both usually speak REST/HTTP; the query parameter can be DSL JSON or a simplified query string, depending on the Tester.
• Authentication, TLS, and index name handling differ; check the specific Tester implementation.

Minimal Verification Command (Elasticsearch 8 Example)

java -jar build/libs/oneclient-1.0-all.jar \
  -h 127.0.0.1 -P 9200 -e elasticsearch -t query \
  -q '{ "query": { "match_all": {} } }'

Maintenance Notes

• Do not register es / elasticsearch to OpenSearchTester.
• When upgrading the client SDK, watch for transport protocol version and Java API breaking changes.