receiving different tokens per applications - splunk_hec - splunk exporter

[assisleandro]

Scenario:
I have many applications sending logs to a centralized opentelemetry collector via grpc that export to splunk via splunk_hec. All logs are sending to splunk with the same splunk token that was configured in centralized collector.

Is there any option to configure the splunk token in my applications and send the token to my centralized collector? I would like to segregate the splunk token per application, each application will have a different splunk token.

I tried headers_setter without success, its not clear to me how use it.

`
exporters:

splunk_hec:
  token: "${SPLUNK_TOKEN}" <<<<<<<< I WOULD LIKE RECEIVE IT FROM APPLICATIONS
  endpoint: "${SPLUNK_ENDPOINT}"
  source: "${SPLUNK_SOURCE}"
  index: "${SPLUNK_INDEX}"
  max_connections: 20
  timeout: 10s
  tls:
    insecure_skip_verify: true

`