Enabling Java REST Client logging in Elasticsearch in Curl format

Question

I'm using org.elasticsearch.client.RestHighLevelClient to run queries.

According to the official documentation, it's possible to log requests in curl format:

https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/java-rest-low-usage-logging.html

I have added the following line to my log4j.properties:

log4j.logger.org.elasticsearch.client = debug

Now I see http requests, but, how can I set curl formatting?

Answer 1

According to their documentation, you need to enable specific tracer logger, that is responsible specifically for curl format response.

You could achieve this in log4j 1.x with following lines:

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[%d{yyyy-MM-dd HH:mm:ss}] [%-5p] %c{1}:%L - %m%n

log4j.logger.tracer=TRACE, stdout

Answer 2

Just in case someone doesn't want to bother oneself with loggers, it's possible to call toString() on QueryBuilder and see a request.