06_credentials_func

Overview ¶

CredentialsFunc lets the SDK look up credentials per request. Useful when:

• env vars override an OS keyring (CLI pattern)
• a multi-tenant server picks credentials by tenant from request context
• tokens are stored in a vault that needs to be queried per call

Here we demonstrate the env-vars-then-keyring pattern. The "keyring" is stubbed inline; in practice you'd plug in zalando/go-keyring or any other secret store on your side — the SDK stays agnostic.