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/
resource_converter.go
133 lines (118 loc) · 3.8 KB
/
resource_converter.go
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package v2
import (
"github.com/kyma-project/module-manager/pkg/types"
"k8s.io/apimachinery/pkg/api/meta"
v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/cli-runtime/pkg/resource"
)
type ResourceInfoConverter interface {
ResourceInfo(obj *unstructured.Unstructured, retryOnNoMatch bool) (*resource.Info, error)
}
type ResourceToInfoConverter interface {
ResourcesToInfos([]Resource) ([]*resource.Info, error)
UnstructuredToInfos([]*unstructured.Unstructured) ([]*resource.Info, error)
}
type InfoToResourceConverter interface {
InfosToResources([]*resource.Info) []Resource
}
func NewResourceToInfoConverter(converter ResourceInfoConverter, defaultNamespace string) ResourceToInfoConverter {
return &defaultResourceToInfoConverter{converter: converter, defaultNamespace: defaultNamespace}
}
type defaultResourceToInfoConverter struct {
converter ResourceInfoConverter
defaultNamespace string
}
func NewInfoToResourceConverter() InfoToResourceConverter {
return &defaultInfoToResourceConverter{}
}
type defaultInfoToResourceConverter struct{}
func (c *defaultInfoToResourceConverter) InfosToResources(infos []*resource.Info) []Resource {
resources := make([]Resource, 0, len(infos))
for _, info := range infos {
var gvk v1.GroupVersionKind
if info.Mapping != nil {
gvk = v1.GroupVersionKind(info.ResourceMapping().GroupVersionKind)
} else {
gvk = v1.GroupVersionKind(info.Object.GetObjectKind().GroupVersionKind())
}
resources = append(
resources, Resource{
Name: info.Name,
Namespace: info.Namespace,
GroupVersionKind: gvk,
},
)
}
return resources
}
func (c *defaultResourceToInfoConverter) ResourcesToInfos(resources []Resource) ([]*resource.Info, error) {
current := make([]*resource.Info, 0, len(resources))
errs := make([]error, 0, len(resources))
for _, res := range resources {
resourceInfo, err := c.converter.ResourceInfo(res.ToUnstructured(), true)
if err != nil {
errs = append(errs, err)
continue
}
current = append(current, resourceInfo)
}
if len(errs) > 0 {
return current, types.NewMultiError(errs)
}
return current, nil
}
func (c *defaultResourceToInfoConverter) UnstructuredToInfos(
resources []*unstructured.Unstructured,
) ([]*resource.Info, error) {
target := make([]*resource.Info, 0, len(resources))
errs := make([]error, 0, len(resources))
for _, obj := range resources {
resourceInfo, err := c.converter.ResourceInfo(obj, true)
// if there is no match we will initialize the resource anyway, just without
// the mapping. This will cause the applier and mappings to fall back to unstructured
// if this apply fails, it will continue to fail until either the mapping is resolved
// correctly or the kind is present
if meta.IsNoMatchError(err) {
target = append(
target, &resource.Info{
Namespace: obj.GetNamespace(),
Name: obj.GetName(),
Object: obj,
ResourceVersion: obj.GetResourceVersion(),
},
)
continue
}
if err != nil {
errs = append(errs, err)
continue
}
target = append(target, resourceInfo)
}
if len(errs) > 0 {
return nil, types.NewMultiError(errs)
}
c.normaliseNamespaces(target)
return target, nil
}
// normaliseNamespaces is only a workaround for malformed resources, e.g. by bad charts or wrong type configs.
func (c *defaultResourceToInfoConverter) normaliseNamespaces(infos []*resource.Info) {
for _, info := range infos {
obj, ok := info.Object.(v1.Object)
if !ok {
continue
}
if info.Namespaced() {
if info.Namespace == "" || obj.GetNamespace() == "" {
info.Namespace = c.defaultNamespace
obj.SetNamespace(c.defaultNamespace)
}
} else {
if info.Namespace != "" || obj.GetNamespace() != "" {
info.Namespace = ""
obj.SetNamespace("")
}
}
}
}