Specifying not_analyzed for additional fields

[mcantrell]

The default type for string additional fields is analyzed. Is there a way to register the type for the additional fields?

For instance, we register additional fields to track the host:

   def customFields = [
           "host": InetAddress.getLocalHost().getHostName()
   ]
   def reporter = ElasticsearchReporter.forRegistry(registry)
           .hosts(hosts)
           .additionalFields(customFields)
           .build()

Our host names have a naming convention which separates the number of the instance:

• api-01
• api-02
• etc..

This causes a split in the analyzed fields (api, 01, 02) when trying to visualize the data in kibana.

[mcantrell]

I've created my own template via curl but it would be nice to specify the type along with the mapping or supply a custom template to be used in ElasticsearchReporter.checkForIndexTemplate

curl -XPUT localhost:9200/_template/metrics_template -d '
{
  "order": 0,
  "template": "metrics*",
  "settings": {},
  "mappings": {
    "_default_": {
      "properties": {
        "name": {
          "index": "not_analyzed",
          "type": "string"
        },
        "host": {
          "index": "not_analyzed",
          "type": "string"
        }
      },
      "_all": {"enabled": false}
    }
  },
  "aliases": {}
}
'