Ollama ps command for showing currently loaded models (#4327)

server/routes.go

@@ -979,6 +979,7 @@ func (s *Server) GenerateRoutes() http.Handler {
 	r.POST("/api/show", s.ShowModelHandler)
 	r.POST("/api/blobs/:digest", s.CreateBlobHandler)
 	r.HEAD("/api/blobs/:digest", s.HeadBlobHandler)
+	r.GET("/api/ps", s.ProcessHandler)
 
 	// Compatibility endpoints
 	r.POST("/v1/chat/completions", openai.Middleware(), s.ChatHandler)
@@ -1137,6 +1138,34 @@ func streamResponse(c *gin.Context, ch chan any) {
 	})
 }
 
+func (s *Server) ProcessHandler(c *gin.Context) {
+	models := []api.ModelResponse{}
+
+	for _, v := range s.sched.loaded {
+		model := v.model
+		modelDetails := api.ModelDetails{
+			Format:            model.Config.ModelFormat,
+			Family:            model.Config.ModelFamily,
+			Families:          model.Config.ModelFamilies,
+			ParameterSize:     model.Config.ModelType,
+			QuantizationLevel: model.Config.FileType,
+		}
+
+		mr := api.ModelResponse{
+			Model:     model.ShortName,
+			Name:      model.ShortName,
+			Size:      int64(v.estimatedTotal),
+			SizeVRAM:  int64(v.estimatedVRAM),
+			Digest:    model.Digest,
+			Details:   modelDetails,
+			ExpiresAt: v.expiresAt,
+		}
+		models = append(models, mr)
+	}
+
+	c.JSON(http.StatusOK, api.ListResponse{Models: models})
+}
+
 // ChatPrompt builds up a prompt from a series of messages for the currently `loaded` model
 func chatPrompt(ctx context.Context, runner *runnerRef, template string, messages []api.Message, numCtx int) (string, error) {
 	encode := func(s string) ([]int, error) {