Plugins: Add support for ResourceConversion (#91977)

pkg/plugins/backendplugin/grpcplugin/client.go

@@ -34,6 +34,7 @@ var pluginSet = map[int]goplugin.PluginSet{
 		"data":           &grpcplugin.DataGRPCPlugin{},
 		"stream":         &grpcplugin.StreamGRPCPlugin{},
 		"admission":      &grpcplugin.AdmissionGRPCPlugin{},
+		"conversion":     &grpcplugin.ConversionGRPCPlugin{},
 		"renderer":       &pluginextensionv2.RendererGRPCPlugin{},
 		"secretsmanager": &secretsmanagerplugin.SecretsManagerGRPCPlugin{},
 	},

pkg/plugins/backendplugin/grpcplugin/client_proto.go

@@ -26,6 +26,7 @@ type ProtoClient interface {
 	pluginv2.DiagnosticsClient
 	pluginv2.StreamClient
 	pluginv2.AdmissionControlClient
+	pluginv2.ResourceConversionClient
 
 	PID(context.Context) (string, error)
 	PluginID() string
@@ -202,10 +203,10 @@ func (r *protoClient) MutateAdmission(ctx context.Context, in *pluginv2.Admissio
 	return c.AdmissionClient.MutateAdmission(ctx, in, opts...)
 }
 
-func (r *protoClient) ConvertObject(ctx context.Context, in *pluginv2.ConversionRequest, opts ...grpc.CallOption) (*pluginv2.ConversionResponse, error) {
+func (r *protoClient) ConvertObjects(ctx context.Context, in *pluginv2.ConversionRequest, opts ...grpc.CallOption) (*pluginv2.ConversionResponse, error) {
 	c, exists := r.client(ctx)
 	if !exists {
 		return nil, errClientNotStarted
 	}
-	return c.AdmissionClient.ConvertObject(ctx, in, opts...)
+	return c.ConversionClient.ConvertObjects(ctx, in, opts...)
 }

pkg/plugins/backendplugin/grpcplugin/client_v2.go

@@ -25,6 +25,7 @@ type ClientV2 struct {
 	grpcplugin.DataClient
 	grpcplugin.StreamClient
 	grpcplugin.AdmissionClient
+	grpcplugin.ConversionClient
 	pluginextensionv2.RendererPlugin
 	secretsmanagerplugin.SecretsManagerPlugin
 }
@@ -50,6 +51,11 @@ func newClientV2(descriptor PluginDescriptor, logger log.Logger, rpcClient plugi
 		return nil, err
 	}
 
+	rawConversion, err := rpcClient.Dispense("conversion")
+	if err != nil {
+		return nil, err
+	}
+
 	rawStream, err := rpcClient.Dispense("stream")
 	if err != nil {
 		return nil, err
@@ -90,6 +96,12 @@ func newClientV2(descriptor PluginDescriptor, logger log.Logger, rpcClient plugi
 		}
 	}
 
+	if rawConversion != nil {
+		if conversionClient, ok := rawConversion.(grpcplugin.ConversionClient); ok {
+			c.ConversionClient = conversionClient
+		}
+	}
+
 	if rawStream != nil {
 		if streamClient, ok := rawStream.(grpcplugin.StreamClient); ok {
 			c.StreamClient = streamClient
@@ -308,13 +320,13 @@ func (c *ClientV2) MutateAdmission(ctx context.Context, req *backend.AdmissionRe
 	return backend.FromProto().MutationResponse(protoResp), nil
 }
 
-func (c *ClientV2) ConvertObject(ctx context.Context, req *backend.ConversionRequest) (*backend.ConversionResponse, error) {
-	if c.AdmissionClient == nil {
+func (c *ClientV2) ConvertObjects(ctx context.Context, req *backend.ConversionRequest) (*backend.ConversionResponse, error) {
+	if c.ConversionClient == nil {
 		return nil, plugins.ErrMethodNotImplemented
 	}
 
 	protoReq := backend.ToProto().ConversionRequest(req)
-	protoResp, err := c.AdmissionClient.ConvertObject(ctx, protoReq)
+	protoResp, err := c.ConversionClient.ConvertObjects(ctx, protoReq)
 
 	if err != nil {
 		if status.Code(err) == codes.Unimplemented {

pkg/plugins/backendplugin/grpcplugin/grpc_plugin.go

@@ -20,6 +20,7 @@ type pluginClient interface {
 	backend.QueryDataHandler
 	backend.CallResourceHandler
 	backend.AdmissionHandler
+	backend.ConversionHandler
 	backend.StreamHandler
 }
 
@@ -217,10 +218,10 @@ func (p *grpcPlugin) MutateAdmission(ctx context.Context, request *backend.Admis
 	return pluginClient.MutateAdmission(ctx, request)
 }
 
-func (p *grpcPlugin) ConvertObject(ctx context.Context, request *backend.ConversionRequest) (*backend.ConversionResponse, error) {
+func (p *grpcPlugin) ConvertObjects(ctx context.Context, request *backend.ConversionRequest) (*backend.ConversionResponse, error) {
 	pluginClient, ok := p.getPluginClient()
 	if !ok {
 		return nil, plugins.ErrPluginUnavailable
 	}
-	return pluginClient.ConvertObject(ctx, request)
+	return pluginClient.ConvertObjects(ctx, request)
 }