New component: Google Client Auth Extension

[damemi]

The purpose and use-cases of the new component

Google Client Auth Extension provides Google OAuth2 Client Credentials and Metadata for gRPC and http based exporters. It allows exporters to authenticate with GCP and send telemetry to endpoints in Google Cloud.

Example configuration for the component

extensions:
  googleclientauth:
    project: my-project
    quota_project: billing-project
    scopes:
    - "https://www.googleapis.com/auth/cloud-platform"

receivers:
  otlp:
    protocols:
      grpc:

exporters:
  otlp/withauth:
    endpoint: 0.0.0.0:5000
    ca_file: /tmp/certs/ca.pem
    auth:
      authenticator: googleclientauth

service:
  extensions: [googleclientauth]
  pipelines:
    metrics:
      receivers: [otlp]
      processors: []
      exporters: [otlp/withauth]

Telemetry data types supported

traces, metrics, logs

Is this a vendor-specific component?

• This is a vendor-specific component
• If this is a vendor-specific component, I am proposing to contribute and support it as a representative of the vendor.

Code Owner(s)

dashpole, damemi

Sponsor (optional)

dashpole

Additional context

Component is currently available downstream at https://github.com/GoogleCloudPlatform/opentelemetry-operations-go/tree/87124ac8635698cc7cdc9f8f2dfca94a8aa13606/extension/googleclientauthextension

[damemi]

cc @dashpole

[dashpole]

I will sponsor the component. To answer the obvious question:

How is this different from the oauth2 client auth extension?

• This auth extension supports many google-specific authentication methods that are not supported by the oauth2 auth extension: See https://cloud.google.com/docs/authentication/application-default-credentials

[damemi]

First PR opened at #31518 to just add the scaffolding

[github-actions]

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[dashpole]

@damemi can this be closed?

[damemi]

@damemi can this be closed?

Yup, thanks!