vendor: add github.com/Azure/azure-sdk-for-go and dependencies

vendor/github.com/Azure/azure-sdk-for-go/arm/examples/helpers/helpers.go

@@ -0,0 +1,49 @@
+package helpers
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/Azure/go-autorest/autorest/adal"
+	"github.com/Azure/go-autorest/autorest/azure"
+)
+
+const (
+	credentialsPath = "/.azure/credentials.json"
+)
+
+// ToJSON returns the passed item as a pretty-printed JSON string. If any JSON error occurs,
+// it returns the empty string.
+func ToJSON(v interface{}) (string, error) {
+	j, err := json.MarshalIndent(v, "", "  ")
+	return string(j), err
+}
+
+// NewServicePrincipalTokenFromCredentials creates a new ServicePrincipalToken using values of the
+// passed credentials map.
+func NewServicePrincipalTokenFromCredentials(c map[string]string, scope string) (*adal.ServicePrincipalToken, error) {
+	oauthConfig, err := adal.NewOAuthConfig(azure.PublicCloud.ActiveDirectoryEndpoint, c["AZURE_TENANT_ID"])
+	if err != nil {
+		panic(err)
+	}
+	return adal.NewServicePrincipalToken(*oauthConfig, c["AZURE_CLIENT_ID"], c["AZURE_CLIENT_SECRET"], scope)
+}
+
+func ensureValueStrings(mapOfInterface map[string]interface{}) map[string]string {
+	mapOfStrings := make(map[string]string)
+	for key, value := range mapOfInterface {
+		mapOfStrings[key] = ensureValueString(value)
+	}
+	return mapOfStrings
+}
+
+func ensureValueString(value interface{}) string {
+	if value == nil {
+		return ""
+	}
+	switch v := value.(type) {
+	case string:
+		return v
+	default:
+		return fmt.Sprintf("%v", v)
+	}
+}