From 1bd3cb85a1cf0e94b3280412d5fb47cecc4721fd Mon Sep 17 00:00:00 2001
From: jiangpengfei <jiangpengfei9@huawei.com>
Date: Wed, 29 Jul 2020 10:42:49 +0800
Subject: [PATCH 14/50] kata-runtime: add self defined annotations framework

reason: add self defined annotations framework to pass some
self defined resource for sandbox

Signed-off-by: jiangpengfei <jiangpengfei9@huawei.com>
---
 virtcontainers/pkg/oci/utils.go | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/virtcontainers/pkg/oci/utils.go b/virtcontainers/pkg/oci/utils.go
index cd8d48ce..05181efd 100644
--- a/virtcontainers/pkg/oci/utils.go
+++ b/virtcontainers/pkg/oci/utils.go
@@ -33,6 +33,10 @@ type annotationContainerType struct {
 	containerType vc.ContainerType
 }
 
+type annotationHandler func(value string) error
+
+var annotationHandlerList = map[string]annotationHandler{}
+
 var (
 	// ErrNoLinux is an error for missing Linux sections in the OCI configuration file.
 	ErrNoLinux = errors.New("missing Linux section")
@@ -342,6 +346,10 @@ func addAnnotations(ocispec specs.Spec, config *vc.SandboxConfig) error {
 	if err := addAgentConfigOverrides(ocispec, config); err != nil {
 		return err
 	}
+
+	if err := addOtherSandboxAnnotation(ocispec, config); err != nil {
+		return err
+	}
 	return nil
 }
 
@@ -1016,3 +1024,33 @@ func GetOCIConfig(status vc.ContainerStatus) (specs.Spec, error) {
 
 	return *status.Spec, nil
 }
+
+// validateOtherSandboxAnnotations validate the value of annotation
+func validateOtherSandboxAnnotations(annotation, value string) error {
+	validateHandler, ok := annotationHandlerList[annotation]
+	if !ok {
+		return fmt.Errorf("unsupport Sandbox annotation type")
+	}
+
+	return validateHandler(value)
+}
+
+// addOtherSandboxAnnotation add self defined annotation for sandbox
+func addOtherSandboxAnnotation(ocispec specs.Spec, sbConfig *vc.SandboxConfig) error {
+	otherSandboxAnnotationsKey := []string{}
+
+	for _, a := range otherSandboxAnnotationsKey {
+		value, ok := ocispec.Annotations[a]
+		if !ok {
+			continue
+		}
+
+		if err := validateOtherSandboxAnnotations(a, value); err != nil {
+			return err
+		}
+
+		sbConfig.Annotations[a] = value
+	}
+
+	return nil
+}
-- 
2.14.3 (Apple Git-98)