loki receiver - basic authentication

[sairamsadanala]

Component(s)

receiver/loki

Describe the issue you're reporting

Context: I am trying to setup otelcol-contrib abstraction layer with loki receiver implementing basic authentication and with transform processor to set dynamic tenant(X-scope-OrgID) in the request header while exporting to Grafana Loki endpoint.

Issue: It does not sound like loki receiver support basic authentication.

[github-actions]

Pinging code owners:

• receiver/loki: @mar4uk @jpkrohling

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[github-actions]

Pinging code owners for extension/basicauth: @jpkrohling @svrakitin @frzifus. See Adding Labels via Comments if you do not have permissions to add labels yourself.

[jpkrohling]

It does support, as it uses the common HTTP and gRPC server settings. Something like this should work:

extensions:
  basicauth:
    htpasswd: 
      inline: "admin: $apr1$so2zr16x$jWvnqhK3fg24qjBB4iN6x/"

receivers:
  loki:
    protocols:
      http:
        auth:
          authenticator: basicauth
      grpc:
        auth:
          authenticator: basicauth

exporters:
  logging:

service:
  extensions: [basicauth]
  pipelines:
    logs:
      receivers: [loki]
      processors:
      exporters: [logging]

I'll work on documenting this.