AWS EFS error helpers (#6061)

pkg/blockstorage/awsefs/error.go

@@ -0,0 +1,28 @@
+package awsefs
+
+import (
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/service/backup"
+	awsefs "github.com/aws/aws-sdk-go/service/efs"
+)
+
+func isVolumeNotFound(err error) bool {
+	if awsErr, ok := err.(awserr.Error); ok {
+		return awsErr.Code() == awsefs.ErrCodeFileSystemNotFound
+	}
+	return false
+}
+
+func isBackupVaultAlreadyExists(err error) bool {
+	if awsErr, ok := err.(awserr.Error); ok {
+		return awsErr.Code() == backup.ErrCodeAlreadyExistsException
+	}
+	return false
+}
+
+func isRecoveryPointNotFound(err error) bool {
+	if awsErr, ok := err.(awserr.Error); ok {
+		return awsErr.Code() == backup.ErrCodeResourceNotFoundException
+	}
+	return false
+}