Why can't I change back to the original tag?

[xidiandb]

I want to keep the original tag, but I can't.

[okkez]

Use record_transformer before apply this plugin.

[iJebus]

I'm new to fluentd but as far as I can tell, record_transformer isn't applicable when you want to rewrite some records based on tags but not all of them. For example, the below doesn't seem to work:

<match service.**>
  @type rewrite_tag_filter
  <rule>
    key     $.request.remote_address
    pattern /10\.[023]\.*/
    tag     ${tag}
  </rule>
  <rule>
    key     $.request.remote_address
    pattern /10\.6\.*/
    tag     region.${tag}
  </rule>
</match>

[xidiandb]

I'm new to fluentd but as far as I can tell, record_transformer isn't applicable when you want to rewrite some records based on tags but not all of them. For example, the below doesn't seem to work:

Do you see why not，After the tag is modified, it will be rerouted, and the result will be returned to the logic of your modified tag

[iJebus]

Ah so it re-enters from the top? I had assumed it would be re-emitted from that match and continue down. Like I said, I'm new 😅 Anyway I understand now with your explanation, thank you!