Imports github.com/armon/go-metrics github.com/hashicorp/errwrap github.com/hashicorp/go-cleanhttp github.com/mgutz/logxi/v1 github.com/Azure/azure-sdk-for-go/storage github.com/hashicorp/vault/helper/strutil github.com/hashicorp/vault/physical Standard library imports context encoding/base64 fmt io/ioutil os sort strconv strings time