Google Cloud Storage

Google Cloud Storage Access

If you use Google Cloud Storage to store data, if you submit tasks with attachments as gs: protocol URIs, rather than http: or https:, we will use the Google Cloud Storage API to fetch your data. For example, instead of sending https://storage.googleapis.com/bucket/key, you would send gs://bucket/key.

We can either fetch your data using Service Account Impersonation (preferred, more secure) or Cross-project Access.

Service Account Impersonation

To access Cloud Storage data in your GCP project, Scale can impersonate a service account within that project, which has permission to access data in Cloud Storage.

To set up Service Account Impersonation:

  1. As a team admin or manager, go to dashboard.scale.com/settings/integrations.
  2. In another window, navigate to the GCP Service Accounts page for the appropriate project.
  3. Create a service account.
  • The service account ID must contain an 8-character user identifier as a substring, this identifier can be found in the Google Cloud Platform section of the Integrations Settings page.
  • We suggest the ID scaleai-integrations-{uid}.
  1. Grant Scale's service account the ability to impersonate the newly created service account
  • In the Service Accounts page on GCP, check the box associated with the newly created service account.
  • In the permissions pane on the right, click Add Member, you may need to click "Show Info Panel" in the top right to see this option.
  • Specify backend-bucket-access@attachment-storage-243718.iam.gserviceaccount.com as the member, and Service Account Token Creator as the role.
  • Save the permissions.
  1. In Google Cloud Storage, assign the Storage Object Data Reader permissions for the requisite buckets to the newly created service account.
  • If you use fine-grained access controls, add the service account email as a Reader for any objects you would like to upload (if not already granted by bucket-level access).
  1. Return to the Scale Dashboard and enter the email of the service account.
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Note that if you enable the GCP integration for your account, we will not attempt to fetch attachments from the default service account ( backend-bucket-access@attachment-storage-243718.iam.gserviceaccount.com) directly; the policies described in GCP IAM Access will not work.

Cross-project Access

If Service Account Impersonation is not configured, we will directly fetch attachments from your GCS bucket, using the GCP service account backend-bucket-access@attachment-storage-243718.iam.gserviceaccount.com. You can grant access to this service account on a per-object basis with ACLs, or on a per-bucket basis with Cloud IAM
Permissions
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Please note that this authentication mechanism suffers from the confused deputy problem — a third party that can guess your Cloud Storage URLs will be able to submit tasks with your data.

Updated 6 months ago