bearertokenauth extensions does not support configauth.ServerAuthenticator

[frzifus]

Component(s)

extension/bearertokenauth

Is your feature request related to a problem? Please describe.

currently it is not possible to use the bearertokenauth extension as server authenticator.

---
extensions:
  bearertokenauth/withscheme:
    scheme: "Bearer"
    token: "randomtoken"

receivers:
  otlp:
    protocols:
      grpc:
        auth:
          authenticator: bearertokenauth/withscheme
      http:

exporters:
  logging:
    verbosity: detailed

service:
  extensions: [bearertokenauth/withscheme]
  pipelines:
    metrics:
      receivers: [otlp]
      exporters: [logging]

This configuration leads to:

2023/05/23 16:00:15 collector server run finished with error: cannot start pipelines: requested authenticator is not a server authenticator

Describe the solution you'd like

bearertokenauth should implement configauth.ServerAuthenticator like e.g. basicauth does.

Describe alternatives you've considered

No response

Additional context

Testing:

telemetrygen metrics --otlp-insecure --duration 15s --rate 4 --otlp-http=false --otlp-header authorization=\"Bearer\ randomtoken\"

---

cc @sallyom

[github-actions]

Pinging code owners:

• extension/bearertokenauth: @jpkrohling @pavankrish123

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