add support for alpine images or scratch

[jeffhollan]

Expected Behavior

When running in a base image that is scratch or -alpine I'd expect it to work

Actual Behavior

Always get the below error:

failed to configure AAD JWT provider: failed to refersh token: &{{{ 0 0 0 } 0xc4203889f0 {{https login.microsoftonline.com /72f988bf-86f1-xxxx-xxxx-2d7cd011db47 false } {https login.microsoftonline.com /72f988bf-xxxx-xxxx-91ab-2d7cd011db47/oauth2/authorize false api-version=1.0 } {https login.microsoftonline.com /72f988bf-xxxx-xxxx-91ab-2d7cd011db47/oauth2/token false api-version=1.0 } {https login.microsoftonline.com /72f988bf-xxxx-xxxx-xxxx-2d7cd011db47/oauth2/devicecode false api-version=1.0 }} 930fab59-xxxx-xxxx-xxxx-484114d560ea https://eventhubs.azure.net/ true 300000000000} 0xc4202caee0 0xc42028a8d0 [] 0}

Environment

• OS: both alpine:3.7 and scratch
• Go version: 1.12.5
• Version of Library: 1.1.4

[devigned]

Sorry for missing this issue and not responding til now.

Silly question, are you sure your credentials were correct?

Can you provide a code sample showing the construction of your EPH or Hub instance?

There really shouldn't be anything fancy happening under the covers. The AAD JWT provider will use service principal creds (password or cert) and fall back to MSI if available. Each of those is just a handful of simple HTTP requests to procure a token. The error that you've posted seems to me that AAD rejected your token request due to bad password or similar. See

azure-amqp-common-go/aad/jwt.go

Lines 160 to 162 in d021cd0

	if err := spToken.Refresh(); err != nil {
	return nil, fmt.Errorf("failed to refersh token: %v", spToken)
	}

Also, spelling error in "refersh". That needs to be cleaned up.