parser json return only first element of hashes

[VolJin]

I get only first element of hash and get one metric, but expected more.

Relevant telegraf.conf:

Config:

[[inputs.file]]
  files = ["example"]
  data_format = "json"
  tag_keys = ["first"]
  json_string_fields = ["last"]
  json_query = "obj.friends.*"

System info:

CentOS Linux release 7.5.1804
telegraf-1.10.2-1.x86_64

Steps to reproduce:

Input:

{
    "obj": {
        "name": {"first": "Tom", "last": "Anderson"},
        "age":37,
        "children": ["Sara","Alex","Jack"],
        "fav.movie": "Deer Hunter",
        "friends": {
           "Murphy": {"first": "Dale", "last": "Murphy", "age": 44},
           "Craig": {"first": "Roger", "last": "Craig", "age": 68},
           "Ches": {"first": "Jane", "last": "Murphy", "age": 47}
        }
    }
}

Expected behavior:

Output:

file,first=Dale last="Murphy",age=44
file,first=Roger last="Craig",age=68
file,first=Jane last="Murphy",age=47

Actual behavior:

Output:

file,first=Dale last="Murphy",age=44

Additional info:

but if i check json_query online
He is return array of hashes.
In this example:

[
    {
        "first": "Dale",
        "last": "Murphy",
        "age": 44
    },
    {
        "first": "Roger",
        "last": "Craig",
        "age": 68
    },
    {
        "first": "Jane",
        "last": "Murphy",
        "age": 47
    }
]

[danielnelson]

The option needs to contain a gjson query. From what I can tell, it can't support this transformation, though I am certainly not an expert on everything it can do. We have an existing issue to create a powerful JSON parser (#1363), so I believe this data will have to be part of that request.