How to enable query logging in Spring-data-elasticsearch

This one is quite old, but I'd still like to share the solution that worked for me. To log Spring Data Elasticsearch queries executed through the Repository, you need to enable DEBUG logging for the package org.springframework.data.elasticsearch.core.*, e.g. as follows:

logging:
  level:
    org:
      springframework:
        data:
          elasticsearch:
            core: DEBUG

After that, queries will appear in logs:

{
  "from" : 0,
  "size" : 1,
  "query" : {
    "bool" : {
      "should" : [ {
        "query_string" : {
          "query" : "John Doe",
          "fields" : [ "entityName" ],
          "default_operator" : "and"
        }
      }, {
        "query_string" : {
          "query" : "John Doe",
          "fields" : [ "alias" ],
          "default_operator" : "and"
        }
      } ]
    }
  },
  "post_filter" : {
    "bool" : { }
  }
}

One would expect an elegant solution similar to JPA, but it seems that it doesn't simply exist.

Tested with Spring Boot 1.4.0 and Spring Data Elasticsearch 1.7.3.

After digging through the spring data code i found this helpful little logger called "tracer" (name not very unique)

By setting the following in application.properties

logging.level.tracer=TRACE

It will print out a full curl statement for the request along with full JSON the response from Elasticsearch.

I don't have an answer for Spring Data Elasticsearch, but in ES itself you can bump up the default settings for slow query logging and see all the queries in the slow log. More details about slow log here.

As to how to change the thresholds, a command like this should be used:

PUT /_settings
{
  "index.search.slowlog.threshold.query.info": "1ms"
}

1ms is kindof the smallest value you can set.

If you are using spring boot you can set the following in your application.properties:

logging.level.org.elasticsearch.index.search.slowlog.query=INFO
spring.data.elasticsearch.properties.index.search.slowlog.threshold.query.info=1ms