Add Observer metadataedit

This functionality is in beta and is subject to change. The design and code is less mature than official GA features and is being provided as-is with no warranties. Beta features are not subject to the support SLA of official GA features.

processors:
  - add_observer_metadata:
      cache.ttl: 5m
      geo:
        name: nyc-dc1-rack1
        location: 40.7128, -74.0060
        continent_name: North America
        country_iso_code: US
        region_name: New York
        region_iso_code: NY
        city_name: New York

It has the following settings:

netinfo.enabled
(Optional) Default true. Include IP addresses and MAC addresses as fields observer.ip and observer.mac
cache.ttl
(Optional) The processor uses an internal cache for the observer metadata. This sets the cache expiration time. The default is 5m, negative values disable caching altogether.
geo.name
(Optional) User definable token to be used for identifying a discrete location. Frequently a datacenter, rack, or similar.
geo.location
(Optional) Longitude and latitude in comma separated format.
geo.continent_name
(Optional) Name of the continent.
geo.country_name
(Optional) Name of the country.
geo.region_name
(Optional) Name of the region.
geo.city_name
(Optional) Name of the city.
geo.country_iso_code
(Optional) ISO country code.
geo.region_iso_code
(Optional) ISO region code.

The add_observer_metadata processor annotates each event with relevant metadata from the observer machine. The fields added to the event look like the following:

{
  "observer" : {
    "hostname" : "avce",
    "type" : "heartbeat",
    "vendor" : "elastic",
    "ip" : [
      "192.168.1.251",
      "fe80::64b2:c3ff:fe5b:b974",
    ],
    "mac" : [
      "dc:c1:02:6f:1b:ed",
    ],
    "geo": {
      "continent_name": "North America",
      "country_iso_code": "US",
      "region_name": "New York",
      "region_iso_code": "NY",
      "city_name": "New York",
      "name": "nyc-dc1-rack1",
      "location": "40.7128, -74.0060"
    }
  }
}