Add Support for Temporary Credentials

[sarahzinger]

Adds support for our new Temporary Credentials Feature, currently in Private Preview in Grafana Cloud.

Fixes https://github.com/grafana/oss-plugin-partnerships/issues/259

Adds:

• new resource route: /externalId which fetches external id from the env and returns it if there
• hits that new route whenever we load the Config Editor and the selected auth provider is Grafana Assume Role

To Test locally:

• use a local version of Add support for temp creds in athena grafana-aws-sdk-react#63
• Update Custom.ini:

[aws]
allowed_auth_providers = keys,grafana_assume_role
assume_role_enabled = true
external_id = '12345678'

[feature_toggles]
awsDatasourcesTempCredentials = true

• and in .aws/credentials add an access/secret key of a user that has the ability to assume a role

I think it might be easiest to

• first approve this pr:
• then merge and publish: Add support for temp creds in athena grafana-aws-sdk-react#63
• then update this pr with that updated package version
• then merge and publish this pr.

[kevinwcyu]

LGTM.

[maczikasz]

Hi, do I understand right that using the Assume ASW role feature of grafana cloud would only work with the Athena plugin after this PR is merged

Do you have an ETA on this?

Thanks

[sarahzinger]

@maczikasz If you want Grafana to assume an IAM role on your behalf in Grafana Cloud to use the Athena Datasource yes this pr makes that possible! It should be available in version 2.12.0 of the athena plugin (will be out later today)

Right now this feature is in Private Preview and under a feature toggle but if you open up a support ticket we will be more than happy to enable it on your account to grant you early access! We recently added some documentation on this here grafana/grafana#75178 (most of it is directed towards cloudwatch but the logic should be the same)

[maczikasz]

@sarahzinger amazing, thank you for the fast response. I have the feature in grafana cloud enabled already, so will try as soon as the new version is released