The CouchDB River plugin allows to hook into couchdb _changes feed and automatically index it into elasticsearch.
'org.elasticsearch:elasticsearch-river-couchdb:2.2.0'
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch-river-couchdb</artifactId>
<version>2.2.0</version>
</dependency>
<dependency org="org.elasticsearch" name="elasticsearch-river-couchdb" rev="2.2.0"/>
"org.elasticsearch", "elasticsearch-river-couchdb", "2.2.0"