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109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
package scope
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import (
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"context"
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"fmt"
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"net/http"
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"strings"
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"k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/apis/meta/internalversion"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apiserver/pkg/registry/rest"
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scope "github.com/grafana/grafana/pkg/apis/scope/v0alpha1"
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)
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type findREST struct {
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scopeNodeStorage *storage
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}
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var (
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_ rest.Storage = (*findREST)(nil)
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_ rest.SingularNameProvider = (*findREST)(nil)
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_ rest.Connecter = (*findREST)(nil)
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_ rest.Scoper = (*findREST)(nil)
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_ rest.StorageMetadata = (*findREST)(nil)
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)
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func (r *findREST) New() runtime.Object {
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// This is added as the "ResponseType" regarless what ProducesObject() says :)
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return &scope.FindScopeNodeChildrenResults{}
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}
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func (r *findREST) Destroy() {}
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func (r *findREST) NamespaceScoped() bool {
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return true
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}
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func (r *findREST) GetSingularName() string {
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return "FindScopeNodeChildrenResults" // Used for the
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}
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func (r *findREST) ProducesMIMETypes(verb string) []string {
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return []string{"application/json"} // and parquet!
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}
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func (r *findREST) ProducesObject(verb string) interface{} {
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return &scope.FindScopeNodeChildrenResults{}
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}
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func (r *findREST) ConnectMethods() []string {
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return []string{"GET"}
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}
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func (r *findREST) NewConnectOptions() (runtime.Object, bool, string) {
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return nil, false, "" // true means you can use the trailing path as a variable
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}
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func (r *findREST) Connect(ctx context.Context, name string, opts runtime.Object, responder rest.Responder) (http.Handler, error) {
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// See: /pkg/services/apiserver/builder/helper.go#L34
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// The name is set with a rewriter hack
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if name != "name" {
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return nil, errors.NewNotFound(schema.GroupResource{}, name)
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}
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return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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parent := req.URL.Query().Get("parent")
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query := req.URL.Query().Get("query")
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results := &scope.FindScopeNodeChildrenResults{}
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raw, err := r.scopeNodeStorage.List(ctx, &internalversion.ListOptions{
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Limit: 1000,
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})
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if err != nil {
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responder.Error(err)
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return
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}
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all, ok := raw.(*scope.ScopeNodeList)
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if !ok {
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responder.Error(fmt.Errorf("expected ScopeNodeList"))
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return
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}
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for _, item := range all.Items {
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filterAndAppendItem(item, parent, query, results)
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}
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responder.Object(200, results)
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}), nil
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}
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func filterAndAppendItem(item scope.ScopeNode, parent string, query string, results *scope.FindScopeNodeChildrenResults) {
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if parent != item.Spec.ParentName {
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return // Someday this will have an index in raw storage on parentName
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}
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// skip if query is passed and title doesn't match.
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// HasPrefix is not the end goal but something that that gets us started.
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if query != "" && !strings.HasPrefix(item.Spec.Title, query) {
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return
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}
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results.Items = append(results.Items, item)
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}
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