Logstash 1.2.0 geoip debug

geoip.conf

input { stdin { } }
filter {
  json {
    source => "message"
  }
  geoip {
    source => '[usracct][device]'
    add_field => [ "lonlat", "[%{[geoip][longitude]},%{[geoip][latitude]}]" ]
    target => "geoip"
  }
}
output { stdout { debug => true } }

shell

# Start LS 1.2.0

jar -jar logstash-1.2.0-flatjar.jar agent -f geoip.conf

# Copy/Paste next line in the console and hit enter 
{"usracct": {"device": "173.194.45.72"}}

# Output

{
    "message" => "{\"usracct\": {\"device\": \"173.194.45.72\"}}",
    "@timestamp" => "2013-09-05T11:59:22.796Z",
      "@version" => "1",
          "host" => "MacPro.local",
       "usracct" => {
        "device" => "173.194.45.72"
    },
         "geoip" => {
                      "ip" => "173.194.45.72",
           "country_code2" => "US",
           "country_code3" => "USA",
            "country_name" => "United States",
          "continent_code" => "NA",
             "region_name" => "CA",
               "city_name" => "Mountain View",
             "postal_code" => "94043",
                "latitude" => 37.41919999999999,
               "longitude" => -122.0574,
                "dma_code" => 807,
               "area_code" => 650,
                "timezone" => "America/Los_Angeles",
        "real_region_name" => "California"
    },
        "lonlat" => "[-122.0574,37.41919999999999]"
}