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apiextensions.go
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/
apiextensions.go
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package resolvers
import (
"context"
"sort"
"github.com/99designs/gqlgen/graphql"
"github.com/pkg/errors"
corev1 "k8s.io/api/core/v1"
kunstructured "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/client"
extv1 "github.com/crossplane/crossplane/apis/apiextensions/v1"
"github.com/upbound/xgql/internal/auth"
"github.com/upbound/xgql/internal/clients"
"github.com/upbound/xgql/internal/graph/model"
)
const (
errListResources = "cannot list defined resources"
)
type xrd struct {
clients ClientCache
}
func (r *xrd) Events(ctx context.Context, obj *model.CompositeResourceDefinition) (*model.EventConnection, error) {
e := &events{clients: r.clients}
return e.Resolve(ctx, &corev1.ObjectReference{
APIVersion: obj.APIVersion,
Kind: obj.Kind,
Name: obj.Metadata.Name,
UID: types.UID(obj.Metadata.UID),
})
}
func (r *xrd) DefinedCompositeResources(ctx context.Context, obj *model.CompositeResourceDefinition, version *string) (*model.CompositeResourceConnection, error) {
ctx, cancel := context.WithTimeout(ctx, timeout)
defer cancel()
creds, _ := auth.FromContext(ctx)
c, err := r.clients.Get(creds)
if err != nil {
graphql.AddError(ctx, errors.Wrap(err, errGetClient))
return nil, nil
}
gv := schema.GroupVersion{Group: obj.Spec.Group}
switch {
case version != nil:
gv.Version = *version
default:
gv.Version = pickXRDVersion(obj.Spec.Versions)
}
in := &kunstructured.UnstructuredList{}
in.SetAPIVersion(gv.String())
in.SetKind(obj.Spec.Names.Kind + "List")
if lk := obj.Spec.Names.ListKind; lk != nil && *lk != "" {
in.SetKind(*lk)
}
if err := c.List(ctx, in); err != nil {
graphql.AddError(ctx, errors.Wrap(err, errListResources))
return nil, nil
}
out := &model.CompositeResourceConnection{
Nodes: make([]model.CompositeResource, 0, len(in.Items)),
TotalCount: len(in.Items),
}
for i := range in.Items {
out.Nodes = append(out.Nodes, model.GetCompositeResource(&in.Items[i]))
}
sort.Stable(out)
return out, nil
}
func (r *xrd) DefinedCompositeResourceClaims(ctx context.Context, obj *model.CompositeResourceDefinition, version, namespace *string) (*model.CompositeResourceClaimConnection, error) {
// Return early if this XRD doesn't offer a claim.
if obj.Spec.ClaimNames == nil {
return &model.CompositeResourceClaimConnection{}, nil
}
ctx, cancel := context.WithTimeout(ctx, timeout)
defer cancel()
gopts := []clients.GetOption{}
lopts := []client.ListOption{}
if namespace != nil {
gopts = []clients.GetOption{clients.ForNamespace(*namespace)}
lopts = []client.ListOption{client.InNamespace(*namespace)}
}
creds, _ := auth.FromContext(ctx)
c, err := r.clients.Get(creds, gopts...)
if err != nil {
graphql.AddError(ctx, errors.Wrap(err, errGetClient))
return nil, nil
}
gv := schema.GroupVersion{Group: obj.Spec.Group}
switch {
case version != nil:
gv.Version = *version
default:
gv.Version = pickXRDVersion(obj.Spec.Versions)
}
in := &kunstructured.UnstructuredList{}
in.SetAPIVersion(gv.String())
in.SetKind(obj.Spec.ClaimNames.Kind + "List")
if lk := obj.Spec.ClaimNames.ListKind; lk != nil && *lk != "" {
in.SetKind(*lk)
}
if err := c.List(ctx, in, lopts...); err != nil {
graphql.AddError(ctx, errors.Wrap(err, errListResources))
return nil, nil
}
out := &model.CompositeResourceClaimConnection{
Nodes: make([]model.CompositeResourceClaim, 0, len(in.Items)),
TotalCount: len(in.Items),
}
for i := range in.Items {
out.Nodes = append(out.Nodes, model.GetCompositeResourceClaim(&in.Items[i]))
}
sort.Stable(out)
return out, nil
}
// TODO(negz): Try to pick the 'highest' version (e.g. v2 > v1 > v1beta1),
// rather than returning the first served one. There's no guarantee versions
// will actually follow this convention, but it's ubiquitous.
func pickXRDVersion(vs []model.CompositeResourceDefinitionVersion) string {
for _, v := range vs {
if v.Referenceable {
return v.Name
}
}
// Technically one version of the XRD must be marked as referenceable, but
// nothing enforces that. We fall back to picking a served version just in
// case.
for _, v := range vs {
if v.Served {
return v.Name
}
}
// We shouldn't get here, unless the XRD is serving no versions?
return ""
}
type xrdSpec struct {
clients ClientCache
}
func (r *xrdSpec) DefaultComposition(ctx context.Context, obj *model.CompositeResourceDefinitionSpec) (*model.Composition, error) {
if obj.DefaultCompositionReference == nil {
return nil, nil
}
ctx, cancel := context.WithTimeout(ctx, timeout)
defer cancel()
creds, _ := auth.FromContext(ctx)
c, err := r.clients.Get(creds)
if err != nil {
graphql.AddError(ctx, errors.Wrap(err, errGetClient))
return nil, nil
}
cmp := &extv1.Composition{}
nn := types.NamespacedName{Name: obj.DefaultCompositionReference.Name}
if err := c.Get(ctx, nn, cmp); err != nil {
graphql.AddError(ctx, errors.Wrap(err, errGetComposition))
return nil, nil
}
out := model.GetComposition(cmp)
return &out, nil
}
func (r *xrdSpec) EnforcedComposition(ctx context.Context, obj *model.CompositeResourceDefinitionSpec) (*model.Composition, error) {
if obj.EnforcedCompositionReference == nil {
return nil, nil
}
ctx, cancel := context.WithTimeout(ctx, timeout)
defer cancel()
creds, _ := auth.FromContext(ctx)
c, err := r.clients.Get(creds)
if err != nil {
graphql.AddError(ctx, errors.Wrap(err, errGetClient))
return nil, nil
}
cmp := &extv1.Composition{}
nn := types.NamespacedName{Name: obj.EnforcedCompositionReference.Name}
if err := c.Get(ctx, nn, cmp); err != nil {
graphql.AddError(ctx, errors.Wrap(err, errGetComposition))
return nil, nil
}
out := model.GetComposition(cmp)
return &out, nil
}
type composition struct {
clients ClientCache
}
func (r *composition) Events(ctx context.Context, obj *model.Composition) (*model.EventConnection, error) {
e := &events{clients: r.clients}
return e.Resolve(ctx, &corev1.ObjectReference{
APIVersion: obj.APIVersion,
Kind: obj.Kind,
Name: obj.Metadata.Name,
UID: types.UID(obj.Metadata.UID),
})
}