Managing a river

In ElasticSearch, the following are the two main action-related river setups:

• Creating a river
• Deleting a river

Getting ready

You need a working ElasticSearch cluster.

How to do it...

For managing a river, we need to perform the following steps:

1. A river is uniquely defined by a name and a type. The type of the river is the type name defined in the loaded river plugins.
2. After the name and the type parameters, usually a river requires an extra configuration that can be passed in the _meta property.
3. To create a river, the HTTP method is PUT (POST also works):

   curl -XPUT 'http://127.0.0.1:9200/_river/my_river/_meta' -d '{
       "type" : "dummy"
   }'

   The dummy type is a "fake" river always installed in ElasticSearch.

4. The result will be as follows:

   {"ok":true,"_index":"_river","_type":"my_river","_id":"_meta","_version":1}

5. If you look at ElasticSearch logs, you&apos...