Google Ads source connector: Need a "login-customer-id" setting

[zestyping]

Enviroment

• Airbyte version: 0.28.1-alpha
• OS Version / Instance: AWS EC2
• Deployment: Docker
• Source Connector and version: Google Ads 0.1.4
• Destination Connector and version: BigQuery (unstructured) 0.3.10
• Severity: High
• Step where error happened: Sync job / Setup new connection

Current Behavior

When I attempt to run a sync with the new Google Ads source connector, I get this error message in the sync log:

2021-08-02 23:04:58 ERROR () LineGobbler(voidCall):85 -   message: "User doesn\'t have permission to access customer. Note: If you\'re accessing a client customer, the manager\'s customer id must be set in the \'login-customer-id\' header. See https://developers.google.com/google-ads/api/docs/concepts/call-structure#cid"

It looks like I need to provide the manager's customer ID, but this setting is not available on the source settings screen (and I assume that sending the login-customer-id header is not supported).

Expected Behavior

The source settings screen should provide a place to enter the manager's customer ID, and if entered, it should be sent along with the request as the login-customer-id as described in the Google API documentation.

Logs

logs-63-2.txt

Steps to Reproduce

1. Set up a Google Ads source, specifying the customer ID for a customer that is managed under a Manager Account.
2. Set up any destination.
3. Run a sync from the Google Ads source to the destination.

Are you willing to submit a PR?

If someone could point me at the right place to get started, I'd be willing to give this a try!

[potatozerg]

@zestyping Hi, I'm also working on Google Ads. How did you get the refresh token? Is this the one you followed? https://developers.google.com/identity/protocols/oauth2/web-server#obtainingaccesstokens
I'm having trouble defining the scope.