Save and load sessions (#2063)

server/images.go

@@ -41,7 +41,7 @@ type Model struct {
 	Config         ConfigV2
 	ShortName      string
 	ModelPath      string
-	OriginalModel  string
+	ParentModel    string
 	AdapterPaths   []string
 	ProjectorPaths []string
 	Template       string
@@ -50,6 +50,12 @@ type Model struct {
 	Digest         string
 	Size           int64
 	Options        map[string]interface{}
+	Messages       []Message
+}
+
+type Message struct {
+	Role    string `json:"role"`
+	Content string `json:"content"`
 }
 
 type PromptVars struct {
@@ -333,7 +339,7 @@ func GetModel(name string) (*Model, error) {
 		switch layer.MediaType {
 		case "application/vnd.ollama.image.model":
 			model.ModelPath = filename
-			model.OriginalModel = layer.From
+			model.ParentModel = layer.From
 		case "application/vnd.ollama.image.embed":
 			// Deprecated in versions  > 0.1.2
 			// TODO: remove this warning in a future version
@@ -374,6 +380,16 @@ func GetModel(name string) (*Model, error) {
 			if err = json.NewDecoder(params).Decode(&model.Options); err != nil {
 				return nil, err
 			}
+		case "application/vnd.ollama.image.messages":
+			msgs, err := os.Open(filename)
+			if err != nil {
+				return nil, err
+			}
+			defer msgs.Close()
+
+			if err = json.NewDecoder(msgs).Decode(&model.Messages); err != nil {
+				return nil, err
+			}
 		case "application/vnd.ollama.image.license":
 			bts, err := os.ReadFile(filename)
 			if err != nil {
@@ -428,12 +444,12 @@ func CreateModel(ctx context.Context, name, modelFileDir string, commands []pars
 	}
 
 	var layers Layers
+	messages := []string{}
 
 	params := make(map[string][]string)
 	fromParams := make(map[string]any)
 
 	for _, c := range commands {
-		slog.Info(fmt.Sprintf("[%s] - %s", c.Name, c.Args))
 		mediatype := fmt.Sprintf("application/vnd.ollama.image.%s", c.Name)
 
 		switch c.Name {
@@ -607,11 +623,37 @@ func CreateModel(ctx context.Context, name, modelFileDir string, commands []pars
 			}
 
 			layers.Replace(layer)
+		case "message":
+			messages = append(messages, c.Args)
 		default:
 			params[c.Name] = append(params[c.Name], c.Args)
 		}
 	}
 
+	if len(messages) > 0 {
+		fn(api.ProgressResponse{Status: "creating parameters layer"})
+
+		msgs := make([]api.Message, 0)
+
+		for _, m := range messages {
+			// todo: handle images
+			msg := strings.SplitN(m, ": ", 2)
+			msgs = append(msgs, api.Message{Role: msg[0], Content: msg[1]})
+		}
+
+		var b bytes.Buffer
+		if err := json.NewEncoder(&b).Encode(msgs); err != nil {
+			return err
+		}
+
+		layer, err := NewLayer(&b, "application/vnd.ollama.image.messages")
+		if err != nil {
+			return err
+		}
+
+		layers.Replace(layer)
+	}
+
 	if len(params) > 0 {
 		fn(api.ProgressResponse{Status: "creating parameters layer"})
 
@@ -908,8 +950,8 @@ func ShowModelfile(model *Model) (string, error) {
 	mt.Model = model
 	mt.From = model.ModelPath
 
-	if model.OriginalModel != "" {
-		mt.From = model.OriginalModel
+	if model.ParentModel != "" {
+		mt.From = model.ParentModel
 	}
 
 	modelFile := `# Modelfile generated by "ollama show"

server/routes.go

@@ -659,6 +659,7 @@ func GetModelInfo(req api.ShowRequest) (*api.ShowResponse, error) {
 	}
 
 	modelDetails := api.ModelDetails{
+		ParentModel:       model.ParentModel,
 		Format:            model.Config.ModelFormat,
 		Family:            model.Config.ModelFamily,
 		Families:          model.Config.ModelFamilies,
@@ -674,11 +675,17 @@ func GetModelInfo(req api.ShowRequest) (*api.ShowResponse, error) {
 		model.Template = req.Template
 	}
 
+	msgs := make([]api.Message, 0)
+	for _, msg := range model.Messages {
+		msgs = append(msgs, api.Message{Role: msg.Role, Content: msg.Content})
+	}
+
 	resp := &api.ShowResponse{
 		License:  strings.Join(model.License, "\n"),
 		System:   model.System,
 		Template: model.Template,
 		Details:  modelDetails,
+		Messages: msgs,
 	}
 
 	var params []string
@@ -1075,7 +1082,13 @@ func ChatHandler(c *gin.Context) {
 
 	// an empty request loads the model
 	if len(req.Messages) == 0 {
-		c.JSON(http.StatusOK, api.ChatResponse{CreatedAt: time.Now().UTC(), Model: req.Model, Done: true, Message: api.Message{Role: "assistant"}})
+		resp := api.ChatResponse{
+			CreatedAt: time.Now().UTC(),
+			Model:     req.Model,
+			Done:      true,
+			Message:   api.Message{Role: "assistant"},
+		}
+		c.JSON(http.StatusOK, resp)
 		return
 	}