Merging and Formatting Data from Multiple Fluentd Tags

[JeremyBosquet]

Hello,
I'm trying to format the data I retrieve from two inputs in Fluentd and format this data to send it to Elasticsearch.
Is it possible to format Fluentd data coming from two tags into a single ?

Example:

Input 1 (tag: pg.core):

[
  {
    "id": 2,
    "label": "Wolf"
  }
]

Input 2 (tag: pg.pos):

[
  {
    "id": 2,
    "amount": "20"
  }
]

Format to ->

[
  {
    "id": 2,
    "amount": 20,
    "label": "Wolf"
  }
]

I thought about developing a formatter-type plugin and sending it with a tag (pg.*). However, the plugin would only have one of the two inputs. Do you have any ideas?

Thank you.