HYPERFLEET-1086 - feat: Add version handler and plugin registration

Version CRUD nested under /channels/{parent_id}/versions/ using
ResourceHandler ByOwner methods. Plugin init() registers EntityDescriptor
with ParentKind=Channel and OnParentDeleteRestrict.

Author: kuudori

cmd/hyperfleet-api/main.go

@@ -22,6 +22,7 @@ import (
 	_ "github.com/openshift-hyperfleet/hyperfleet-api/plugins/generic"
 	_ "github.com/openshift-hyperfleet/hyperfleet-api/plugins/nodePools"
 	_ "github.com/openshift-hyperfleet/hyperfleet-api/plugins/resources"
+	_ "github.com/openshift-hyperfleet/hyperfleet-api/plugins/versions"
 )
 
 // nolint

plugins/versions/plugin.go

@@ -0,0 +1,54 @@
+package versions
+
+import (
+	"net/http"
+
+	"github.com/gorilla/mux"
+
+	"github.com/openshift-hyperfleet/hyperfleet-api/cmd/hyperfleet-api/environments"
+	"github.com/openshift-hyperfleet/hyperfleet-api/cmd/hyperfleet-api/server"
+	"github.com/openshift-hyperfleet/hyperfleet-api/pkg/auth"
+	"github.com/openshift-hyperfleet/hyperfleet-api/pkg/handlers"
+	"github.com/openshift-hyperfleet/hyperfleet-api/pkg/registry"
+	"github.com/openshift-hyperfleet/hyperfleet-api/plugins/resources"
+)
+
+const (
+	kindVersion       = "Version"
+	pluralVersions    = "versions"
+	specSchemaVersion = "VersionSpec"
+)
+
+func init() {
+	registry.Register(registry.EntityDescriptor{
+		Kind:                   kindVersion,
+		Plural:                 pluralVersions,
+		ParentKind:             "Channel",
+		SpecSchemaName:         specSchemaVersion,
+		OnParentDelete:         registry.OnParentDeleteRestrict,
+		SearchDisallowedFields: []string{"spec"},
+	})
+
+	server.RegisterRoutes(pluralVersions, func(
+		apiV1Router *mux.Router,
+		svc server.ServicesInterface,
+		authMiddleware auth.JWTMiddleware,
+	) {
+		envServices := svc.(*environments.Services)
+		channelDescriptor := registry.MustGet("Channel")
+		descriptor := registry.MustGet(kindVersion)
+		h := handlers.NewResourceHandler(
+			descriptor,
+			resources.Service(envServices),
+		)
+
+		r := apiV1Router.PathPrefix("/" + channelDescriptor.Plural + "/{parent_id}/" + descriptor.Plural).Subrouter()
+		r.HandleFunc("", h.ListByOwner).Methods(http.MethodGet)
+		r.HandleFunc("", h.CreateWithOwner).Methods(http.MethodPost)
+		r.HandleFunc("/{id}", h.GetByOwner).Methods(http.MethodGet)
+		r.HandleFunc("/{id}", h.PatchByOwner).Methods(http.MethodPatch)
+		r.HandleFunc("/{id}", h.DeleteByOwner).Methods(http.MethodDelete)
+
+		r.Use(authMiddleware.AuthenticateAccountJWT)
+	})
+}